How to make 2D metals: Guangyu Zhang on his team’s award-winning research
This episode of the Physics World Weekly podcast features Guangyu Zhang. Along with his colleagues at the Institute of Physics of the Chinese Academy of Sciences, Zhang has bagged the 2025 Physics World Breakthrough of the Year award for creating the first 2D metals.
In a wide-ranging conversation, we chat about the motivation behind the team’s research; the challenges in making 2D metals and how these were overcome; and how 2D metals could be used to boost our understanding of condensed-matter physics and create new technologies.
I am also joined by my Physics World colleague Matin Durrani to talk about some of the exciting physics that we will be showcasing in 2025.
Physics World‘s coverage of the Breakthrough of the Year is supported by Reports on Progress in Physics, which offers unparalleled visibility for your ground-breaking research.
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1 00:00:08,080 --> 00:00:11,039 Hello, and welcome to the Physics World weekly 2 00:00:11,039 --> 00:00:11,539 podcast. 3 00:00:11,919 --> 00:00:13,139 I'm Hamish Johnston. 4 00:00:13,894 --> 00:00:17,355 I'm very pleased to announce that the 2025 5 00:00:17,654 --> 00:00:20,154 Physics World breakthrough of the year award 6 00:00:20,454 --> 00:00:21,914 goes to Gong Yuzhang 7 00:00:22,614 --> 00:00:23,434 and colleagues 8 00:00:23,894 --> 00:00:26,795 at the Institute of Physics of the Chinese 9 00:00:27,175 --> 00:00:28,474 Academy of Sciences. 10 00:00:29,300 --> 00:00:31,719 And they've won for producing the first 11 00:00:32,020 --> 00:00:33,960 two d sheets of metal. 12 00:00:34,979 --> 00:00:36,920 Coming up, I'm in conversation 13 00:00:37,219 --> 00:00:40,659 with Gong Yu, who explains why his team 14 00:00:40,659 --> 00:00:41,159 worked 15 00:00:41,475 --> 00:00:41,975 tirelessly 16 00:00:42,435 --> 00:00:45,954 to create two d versions of several different 17 00:00:45,954 --> 00:00:46,454 metals, 18 00:00:47,155 --> 00:00:50,195 and how these new materials could boost our 19 00:00:50,195 --> 00:00:52,534 understanding of condensed matter physics 20 00:00:53,075 --> 00:00:56,215 and lead to the development of new technologies. 21 00:00:57,520 --> 00:00:59,759 I'm also joined in this episode by my 22 00:00:59,759 --> 00:01:01,299 colleague, Matin Durrani, 23 00:01:01,679 --> 00:01:04,239 to talk about what will be hot in 24 00:01:04,239 --> 00:01:04,739 physics 25 00:01:05,119 --> 00:01:06,819 in 2026. 26 00:01:07,599 --> 00:01:09,140 But first, a message 27 00:01:09,439 --> 00:01:12,259 from reports on progress in physics, 28 00:01:12,795 --> 00:01:13,295 which 29 00:01:13,915 --> 00:01:15,375 supports the Physics World 30 00:01:15,834 --> 00:01:17,534 Breakthrough of the Year Award. 31 00:01:18,314 --> 00:01:20,015 Celebrating the most significant 32 00:01:20,394 --> 00:01:20,894 advances 33 00:01:21,435 --> 00:01:23,055 across the physical sciences, 34 00:01:23,834 --> 00:01:24,569 this award 35 00:01:24,969 --> 00:01:26,030 highlights discoveries 36 00:01:26,329 --> 00:01:27,150 that reshape 37 00:01:27,530 --> 00:01:28,430 our understanding 38 00:01:28,810 --> 00:01:29,629 of the universe 39 00:01:30,090 --> 00:01:30,909 and inspire 40 00:01:31,370 --> 00:01:32,510 future innovation. 41 00:01:33,609 --> 00:01:35,709 Reports on Progress in Physics 42 00:01:36,010 --> 00:01:38,430 is the leading journal for authoritative 43 00:01:38,890 --> 00:01:39,390 research, 44 00:01:40,064 --> 00:01:42,004 connecting researchers worldwide 45 00:01:42,625 --> 00:01:44,325 with cutting edge insights 46 00:01:44,784 --> 00:01:46,644 across every field of physics. 47 00:01:47,185 --> 00:01:49,765 From quantum technologies to astrophysics, 48 00:01:50,465 --> 00:01:51,125 it provides 49 00:01:51,424 --> 00:01:52,805 the depth and clarity 50 00:01:53,340 --> 00:01:54,079 that drive 51 00:01:54,540 --> 00:01:55,680 scientific progress. 52 00:01:56,299 --> 00:01:56,799 Search 53 00:01:57,099 --> 00:01:57,599 reports 54 00:01:57,900 --> 00:01:59,519 on progress in physics 55 00:01:59,819 --> 00:02:01,359 on your favorite browser 56 00:02:01,819 --> 00:02:03,359 to explore the ideas 57 00:02:03,819 --> 00:02:04,319 transforming 58 00:02:04,700 --> 00:02:05,759 science today. 59 00:02:07,454 --> 00:02:10,175 One of the hottest topics in physics over 60 00:02:10,175 --> 00:02:11,474 the past two decades 61 00:02:11,854 --> 00:02:14,115 is the study of two d materials 62 00:02:14,495 --> 00:02:15,474 such as graphene, 63 00:02:16,175 --> 00:02:19,215 which itself is a sheet of carbon just 64 00:02:19,215 --> 00:02:20,675 one atom thick. 65 00:02:21,710 --> 00:02:23,330 While researchers have discovered 66 00:02:23,710 --> 00:02:24,370 a plethora 67 00:02:24,669 --> 00:02:25,490 of fascinating 68 00:02:26,030 --> 00:02:27,569 and potentially useful 69 00:02:27,870 --> 00:02:28,370 phenomena 70 00:02:28,750 --> 00:02:30,050 in two d materials, 71 00:02:31,069 --> 00:02:31,569 physicists 72 00:02:31,949 --> 00:02:34,849 had not been able to create and study 73 00:02:35,415 --> 00:02:36,474 two d versions 74 00:02:36,775 --> 00:02:37,514 of metals. 75 00:02:38,375 --> 00:02:39,194 But now, 76 00:02:39,655 --> 00:02:40,474 Gong Yuzhong 77 00:02:41,014 --> 00:02:41,754 and colleagues 78 00:02:42,135 --> 00:02:44,074 have found a way forward. 79 00:02:44,775 --> 00:02:47,514 He joins me down the line from Beijing 80 00:02:47,974 --> 00:02:50,155 to talk about his group's research. 81 00:02:59,400 --> 00:03:01,740 Hi, Gong Yu. Welcome to the podcast. 82 00:03:03,000 --> 00:03:03,980 Hi, Hamish. 83 00:03:04,415 --> 00:03:05,555 Nice to meet you. 84 00:03:06,014 --> 00:03:06,995 And and congratulations 85 00:03:07,455 --> 00:03:10,415 to you and your team for, winning this 86 00:03:10,415 --> 00:03:10,915 year's 87 00:03:11,375 --> 00:03:13,955 Physics World breakthrough of the year. 88 00:03:14,814 --> 00:03:16,594 Thank you very much. 89 00:03:17,020 --> 00:03:19,180 So so I'd like to start, with the 90 00:03:19,180 --> 00:03:20,560 basics, with the motivation 91 00:03:20,860 --> 00:03:21,840 for your research. 92 00:03:22,460 --> 00:03:25,120 Why why are you interested in creating 93 00:03:25,580 --> 00:03:28,300 two d metals? Why why are they, you 94 00:03:28,300 --> 00:03:30,000 know, such a fascinating system? 95 00:03:31,340 --> 00:03:31,840 Okay. 96 00:03:32,175 --> 00:03:32,675 So, 97 00:03:33,694 --> 00:03:36,354 this question actually can be divided 98 00:03:36,655 --> 00:03:38,194 into two questions. 99 00:03:38,814 --> 00:03:40,895 The first one is why we are interested 100 00:03:40,895 --> 00:03:41,395 in, 101 00:03:41,854 --> 00:03:44,275 two d materials, and the second is, 102 00:03:44,655 --> 00:03:46,834 why we are interested in, metals. 103 00:03:47,430 --> 00:03:48,329 So the first 104 00:03:48,709 --> 00:03:49,349 question is, 105 00:03:49,989 --> 00:03:50,489 because, 106 00:03:52,789 --> 00:03:54,310 right now, everybody knows, 107 00:03:54,789 --> 00:03:56,009 graphene. Right? 108 00:03:56,310 --> 00:03:58,469 So graphene is a well known two d 109 00:03:58,469 --> 00:04:00,185 materials. It's discovered 110 00:04:00,564 --> 00:04:02,004 in 2004, 111 00:04:02,245 --> 00:04:02,745 from, 112 00:04:03,284 --> 00:04:03,784 Manchester, 113 00:04:05,205 --> 00:04:05,705 University. 114 00:04:06,004 --> 00:04:08,504 So the two d material has many fascinating 115 00:04:08,645 --> 00:04:09,145 properties. 116 00:04:09,685 --> 00:04:11,385 So related to, 117 00:04:11,844 --> 00:04:12,344 their, 118 00:04:12,965 --> 00:04:13,784 low demand, 119 00:04:14,245 --> 00:04:14,905 low dimension 120 00:04:16,029 --> 00:04:16,529 analogy. 121 00:04:17,149 --> 00:04:18,209 So when you, 122 00:04:19,149 --> 00:04:19,629 shrink, 123 00:04:20,029 --> 00:04:21,009 a bulk material 124 00:04:21,550 --> 00:04:22,930 to, two dimensions, 125 00:04:23,310 --> 00:04:26,029 this this this material is is very, very 126 00:04:26,029 --> 00:04:29,569 faint. It's atomically thin. So such same materials 127 00:04:29,870 --> 00:04:30,285 have, 128 00:04:31,485 --> 00:04:34,305 so in most cases, it has very different, 129 00:04:34,845 --> 00:04:35,324 properties, 130 00:04:36,365 --> 00:04:38,225 compared to their buck, 131 00:04:38,764 --> 00:04:40,225 like a like a graphite, 132 00:04:40,845 --> 00:04:41,345 versus, 133 00:04:41,884 --> 00:04:44,205 graphene. So graphene is very different, 134 00:04:45,169 --> 00:04:47,969 to to to graphite. Right? So this is 135 00:04:47,969 --> 00:04:49,829 a one, one one, 136 00:04:50,289 --> 00:04:51,909 motivation. So we are, 137 00:04:52,610 --> 00:04:53,909 are going to pursue, 138 00:04:54,849 --> 00:04:57,349 like, new two two d materials. 139 00:04:58,425 --> 00:04:58,925 So 140 00:04:59,384 --> 00:05:02,925 the second one is why why metals. Right? 141 00:05:03,064 --> 00:05:06,665 So, metals are are are very common in 142 00:05:06,665 --> 00:05:08,985 our in our daily life. Right? You can 143 00:05:08,985 --> 00:05:11,169 see it everywhere, and we use it every 144 00:05:11,169 --> 00:05:13,189 day. Right? So so metals, 145 00:05:13,729 --> 00:05:15,349 if you look at the theoretical, 146 00:05:16,289 --> 00:05:16,789 table, 147 00:05:17,250 --> 00:05:20,610 you will find, like, over like, around 80% 148 00:05:20,610 --> 00:05:24,305 of elements are metals. This is and metals 149 00:05:24,305 --> 00:05:28,064 are are are are, it can behave very 150 00:05:28,064 --> 00:05:29,605 differently, like, from 151 00:05:30,064 --> 00:05:31,444 metals can be magnetic. 152 00:05:31,824 --> 00:05:32,964 Metals can be, 153 00:05:33,264 --> 00:05:34,645 can be silver conducting, 154 00:05:35,185 --> 00:05:36,404 and, metals, 155 00:05:37,009 --> 00:05:39,410 so can be used for for, you know, 156 00:05:39,410 --> 00:05:40,389 for many, many, 157 00:05:41,090 --> 00:05:41,590 cases. 158 00:05:42,610 --> 00:05:43,210 So, like, 159 00:05:43,650 --> 00:05:45,970 so this huge amount of, 160 00:05:46,610 --> 00:05:48,555 of of of choices in the 161 00:05:49,115 --> 00:05:51,754 periodical table. So we we want to do 162 00:05:51,754 --> 00:05:52,654 it, like, 163 00:05:53,274 --> 00:05:55,694 in two d forms of metals. But, 164 00:05:57,115 --> 00:05:57,615 like, 165 00:05:58,555 --> 00:05:59,055 spuriously, 166 00:05:59,754 --> 00:06:01,694 these metals, actually, 167 00:06:02,419 --> 00:06:05,060 they cannot be made into the key two 168 00:06:05,060 --> 00:06:08,180 d forms. The the the this is our 169 00:06:08,180 --> 00:06:08,680 motivation. 170 00:06:10,339 --> 00:06:12,339 And and you mentioned that it it is 171 00:06:12,339 --> 00:06:14,279 very difficult to make metals 172 00:06:14,955 --> 00:06:15,455 into, 173 00:06:16,074 --> 00:06:17,375 into two d materials. 174 00:06:17,915 --> 00:06:19,754 Can can you explain why? Does it have 175 00:06:19,754 --> 00:06:21,055 to do with how the 176 00:06:21,355 --> 00:06:23,455 atoms in a metal bond 177 00:06:24,235 --> 00:06:24,735 differently 178 00:06:25,115 --> 00:06:26,654 to, let's say, carbon 179 00:06:27,899 --> 00:06:30,220 atoms. Is is is that the main problem 180 00:06:30,220 --> 00:06:31,920 that they just don't want to 181 00:06:32,379 --> 00:06:35,580 only bond in in two directions? You've you've 182 00:06:35,580 --> 00:06:37,839 got the third direction as well. 183 00:06:38,939 --> 00:06:39,439 Exactly. 184 00:06:39,904 --> 00:06:40,404 So, 185 00:06:40,944 --> 00:06:44,225 like in graphene, carbon atoms are are bonded 186 00:06:44,225 --> 00:06:44,465 in, 187 00:06:45,504 --> 00:06:48,545 in, in a form of covalent bonds. So 188 00:06:48,545 --> 00:06:50,085 these bonds are very strong. 189 00:06:50,465 --> 00:06:54,079 And, also these bonds are very anisotropic. So, 190 00:06:56,620 --> 00:06:57,919 this is one reason, 191 00:06:58,699 --> 00:06:59,680 like, we can, 192 00:07:00,300 --> 00:07:04,219 use, the exfoliation method to create two d 193 00:07:04,219 --> 00:07:07,360 materials for many two d materials, like graphene, 194 00:07:07,995 --> 00:07:10,254 like a black phosphorus, like like, 195 00:07:11,194 --> 00:07:12,574 like, a monolith sulfide, 196 00:07:13,595 --> 00:07:16,254 like many many many other materials. 197 00:07:16,795 --> 00:07:19,375 So, but if you look at the metals, 198 00:07:19,514 --> 00:07:21,055 so most metals are 199 00:07:21,470 --> 00:07:22,850 are are isotropic. 200 00:07:23,389 --> 00:07:24,370 So so 201 00:07:24,750 --> 00:07:25,250 if 202 00:07:25,790 --> 00:07:27,569 the atoms are arranged, 203 00:07:28,029 --> 00:07:30,850 like, if you look at the lattice so 204 00:07:31,470 --> 00:07:33,009 if if you regard 205 00:07:33,310 --> 00:07:35,504 one atom as a man, so if you 206 00:07:35,504 --> 00:07:37,665 look, like, all around a few, so you 207 00:07:37,665 --> 00:07:39,845 will see up and down, left and right, 208 00:07:40,064 --> 00:07:42,305 back and forth. Like, you see 209 00:07:43,504 --> 00:07:46,704 yeah. You are surrounded by by many items, 210 00:07:46,704 --> 00:07:49,125 but these items are are the same, 211 00:07:49,740 --> 00:07:52,139 just as the same to you that that, 212 00:07:52,860 --> 00:07:55,040 so that means this this materials, 213 00:07:55,420 --> 00:07:58,240 you know, the lattice is is very isotropic. 214 00:07:58,460 --> 00:07:59,839 So you cannot use, 215 00:08:00,779 --> 00:08:02,000 like, a mechanical, 216 00:08:02,620 --> 00:08:03,120 exfoliation 217 00:08:03,420 --> 00:08:03,920 method 218 00:08:04,435 --> 00:08:06,834 to to create, like, a two d form 219 00:08:06,834 --> 00:08:07,574 of metals. 220 00:08:07,954 --> 00:08:10,354 So this is the one, one one, 221 00:08:10,995 --> 00:08:11,495 difficulty. 222 00:08:13,475 --> 00:08:15,154 And, I mean, that's you know, when when 223 00:08:15,154 --> 00:08:16,375 we were looking over, 224 00:08:17,089 --> 00:08:18,930 you know, all the sort of work that 225 00:08:19,089 --> 00:08:21,189 that's been done in physics this year, 226 00:08:22,050 --> 00:08:23,730 you know, I think, you you know, the 227 00:08:23,730 --> 00:08:25,669 the the fact that you've managed to overcome 228 00:08:25,810 --> 00:08:29,029 that was the thing that really stood out. 229 00:08:29,785 --> 00:08:32,684 And, you know, it's why we we chose, 230 00:08:33,384 --> 00:08:35,384 your work as our breakthrough of the year. 231 00:08:35,384 --> 00:08:37,325 You know, we were scratching our heads thinking, 232 00:08:37,544 --> 00:08:38,605 how on earth, 233 00:08:39,384 --> 00:08:42,610 you know, have they managed to to get 234 00:08:42,750 --> 00:08:45,089 a a metal to to to create, 235 00:08:46,269 --> 00:08:48,429 a a two d structure? So how did 236 00:08:48,429 --> 00:08:50,129 you do it? How did you overcome 237 00:08:50,589 --> 00:08:51,089 this 238 00:08:51,709 --> 00:08:54,990 urge for metals to bond in all three 239 00:08:54,990 --> 00:08:55,490 dimensions, 240 00:08:56,965 --> 00:08:59,225 to to create a two d metal? 241 00:09:00,085 --> 00:09:02,024 Yeah. So, in principle, 242 00:09:02,485 --> 00:09:05,545 metals cannot have a stable two d structure. 243 00:09:05,925 --> 00:09:06,425 Like, 244 00:09:06,804 --> 00:09:08,985 if you use a, like, a freestanding 245 00:09:09,610 --> 00:09:11,070 a two d form of metals, 246 00:09:11,450 --> 00:09:12,990 this structure is totally, 247 00:09:14,169 --> 00:09:14,910 not stable. 248 00:09:15,450 --> 00:09:18,009 So, it is it it should not be 249 00:09:18,009 --> 00:09:19,470 existed, in nature. 250 00:09:20,009 --> 00:09:23,309 This is the the the the also violation 251 00:09:23,529 --> 00:09:26,384 of a of a common sense. Like, so 252 00:09:26,384 --> 00:09:27,664 so we we have, 253 00:09:28,464 --> 00:09:31,605 so we developed we have developed our, a 254 00:09:31,664 --> 00:09:35,264 a a a process. We called it one 255 00:09:35,264 --> 00:09:36,164 of our squeezing. 256 00:09:36,625 --> 00:09:37,125 So 257 00:09:37,504 --> 00:09:39,284 so the idea is very simple. 258 00:09:39,690 --> 00:09:40,910 Like, so, 259 00:09:42,009 --> 00:09:43,149 so if you like, 260 00:09:43,850 --> 00:09:44,830 you just imagine 261 00:09:45,210 --> 00:09:46,429 a metal like 262 00:09:47,290 --> 00:09:48,450 a a a kind of like a model 263 00:09:48,450 --> 00:09:51,129 or something. Like, it's very soft. So if 264 00:09:51,129 --> 00:09:52,889 you squeeze it, you squeeze it, you can 265 00:09:52,889 --> 00:09:55,434 make it thinner and thinner. So the problem 266 00:09:55,434 --> 00:09:57,534 is if you can squeeze it 267 00:09:57,835 --> 00:09:58,335 into, 268 00:09:58,875 --> 00:09:59,934 like, just a, 269 00:10:00,554 --> 00:10:02,335 one atom sick, like, 270 00:10:02,714 --> 00:10:05,914 to a physical limit. So that's that that 271 00:10:05,914 --> 00:10:06,394 is, 272 00:10:07,629 --> 00:10:08,769 the most important, 273 00:10:09,470 --> 00:10:09,970 thing. 274 00:10:10,829 --> 00:10:11,709 So we have, 275 00:10:12,509 --> 00:10:14,990 this the thing is, like, if you want 276 00:10:14,990 --> 00:10:16,610 to, like, squeeze it 277 00:10:17,549 --> 00:10:19,009 squeeze, like, press 278 00:10:19,514 --> 00:10:20,495 the metal, 279 00:10:21,035 --> 00:10:21,535 into, 280 00:10:22,315 --> 00:10:24,014 the, the two d image. 281 00:10:24,394 --> 00:10:25,295 So we need, 282 00:10:26,075 --> 00:10:27,295 we need to 283 00:10:27,754 --> 00:10:29,835 use, like, a the the top and the 284 00:10:29,835 --> 00:10:31,855 bottom surface must be atomically 285 00:10:32,450 --> 00:10:35,090 flat. So, otherwise, you cannot create, like, a 286 00:10:35,090 --> 00:10:37,490 large area of of two b two d 287 00:10:37,490 --> 00:10:37,990 crystals. 288 00:10:38,450 --> 00:10:41,410 So the second thing is you have to 289 00:10:41,410 --> 00:10:41,910 use, 290 00:10:42,370 --> 00:10:43,750 like, a quite high pressure 291 00:10:44,289 --> 00:10:44,690 and, 292 00:10:45,250 --> 00:10:47,190 and last quite a long time 293 00:10:47,544 --> 00:10:49,945 to make these metals, like, to to, like, 294 00:10:49,945 --> 00:10:50,445 rearrange, 295 00:10:51,065 --> 00:10:51,565 like, 296 00:10:51,945 --> 00:10:56,024 at this confined surf confined space. Like, it's 297 00:10:56,024 --> 00:10:59,085 confined by the two surfaces of these atomic 298 00:10:59,144 --> 00:11:00,125 is most surfaces. 299 00:11:00,610 --> 00:11:00,690 And, 300 00:11:01,410 --> 00:11:01,809 and, 301 00:11:02,290 --> 00:11:02,790 and, 302 00:11:03,410 --> 00:11:05,970 to make it like to to rearrange in 303 00:11:05,970 --> 00:11:06,790 this confined 304 00:11:07,250 --> 00:11:09,649 space to form a two d metal, a 305 00:11:09,649 --> 00:11:10,149 lattice. 306 00:11:12,735 --> 00:11:14,274 And and so you 307 00:11:14,735 --> 00:11:17,294 you were able to to to do this 308 00:11:17,294 --> 00:11:18,115 with several 309 00:11:18,894 --> 00:11:19,394 metals. 310 00:11:19,855 --> 00:11:20,335 Yeah. 311 00:11:21,214 --> 00:11:23,634 I think five of them. Did you, 312 00:11:24,495 --> 00:11:26,414 were they I mean, once you managed to 313 00:11:26,414 --> 00:11:27,075 get them, 314 00:11:27,490 --> 00:11:29,910 you know, sort of into a two d 315 00:11:30,050 --> 00:11:30,550 structure, 316 00:11:31,009 --> 00:11:33,990 did they do they still behave like metals, 317 00:11:34,050 --> 00:11:35,490 you know, in the sense that we would 318 00:11:35,490 --> 00:11:37,029 think of metals as being 319 00:11:37,410 --> 00:11:38,149 good conductors 320 00:11:39,009 --> 00:11:40,629 of electricity, for example, 321 00:11:40,975 --> 00:11:42,835 or did their properties 322 00:11:43,855 --> 00:11:44,514 change dramatically? 323 00:11:44,975 --> 00:11:47,975 Did they become semiconductors or insulators? Or Yeah. 324 00:11:48,095 --> 00:11:50,115 You know, what Yeah. What exactly happened? 325 00:11:50,975 --> 00:11:51,875 Yeah. That's 326 00:11:52,254 --> 00:11:54,894 what we are we are studying right now, 327 00:11:54,894 --> 00:11:56,139 actually. So 328 00:11:56,519 --> 00:11:59,000 we we found that, like, for a very 329 00:11:59,000 --> 00:11:59,500 simple, 330 00:11:59,879 --> 00:12:03,419 metal like bismuth. Like, so so the bismuth, 331 00:12:03,480 --> 00:12:05,480 if you make it to two d. But, 332 00:12:05,480 --> 00:12:06,200 actually, you have 333 00:12:07,399 --> 00:12:09,879 it will have in principle, it will have 334 00:12:09,879 --> 00:12:10,379 different 335 00:12:11,284 --> 00:12:12,264 atomic structures. 336 00:12:12,804 --> 00:12:14,664 Like, it have different phases. 337 00:12:15,125 --> 00:12:17,865 And these different phases give you totally different 338 00:12:18,084 --> 00:12:18,584 properties. 339 00:12:19,204 --> 00:12:22,504 So some of them are are just, metallic, 340 00:12:22,725 --> 00:12:24,240 very, very, very 341 00:12:25,200 --> 00:12:25,700 electronically, 342 00:12:26,080 --> 00:12:26,820 very conductive. 343 00:12:27,360 --> 00:12:31,039 And, the others are are even, semiconductor, but 344 00:12:31,039 --> 00:12:32,580 the gap is is quite small. 345 00:12:32,959 --> 00:12:35,039 And, also, the we have we have, 346 00:12:36,455 --> 00:12:38,215 we have developed this pro 347 00:12:39,095 --> 00:12:39,995 approach approach, 348 00:12:40,455 --> 00:12:40,955 for, 349 00:12:41,575 --> 00:12:42,615 right now, we have, 350 00:12:43,254 --> 00:12:43,754 reported 351 00:12:44,134 --> 00:12:44,634 five 352 00:12:45,014 --> 00:12:45,914 single element, 353 00:12:46,455 --> 00:12:47,674 single element metals, 354 00:12:48,054 --> 00:12:50,129 like but, actually, we can do more, 355 00:12:52,049 --> 00:12:54,470 like, because of the the the the like, 356 00:12:55,649 --> 00:12:56,450 88, 357 00:12:56,769 --> 00:12:59,809 kind of metals in the in in the 358 00:12:59,809 --> 00:13:00,950 theoretical table. 359 00:13:01,330 --> 00:13:03,585 But right now, it's just five. So we 360 00:13:03,904 --> 00:13:05,605 still over, like, eighties 361 00:13:05,985 --> 00:13:09,105 18 metal, like, a single atom metals to, 362 00:13:09,585 --> 00:13:10,565 to do, like, 363 00:13:12,065 --> 00:13:14,165 later. And, also, if you consider 364 00:13:14,705 --> 00:13:16,004 the metals actually, 365 00:13:16,629 --> 00:13:17,289 it it 366 00:13:18,230 --> 00:13:20,409 it it have other forms, like binary 367 00:13:20,789 --> 00:13:22,730 alloys, like like like 368 00:13:23,189 --> 00:13:24,230 like bismuths and, 369 00:13:25,509 --> 00:13:28,089 and, and, and, something else, 370 00:13:28,629 --> 00:13:31,850 like and, also, you have much more, complex 371 00:13:31,909 --> 00:13:35,085 system, like of like, for example, like, five 372 00:13:35,085 --> 00:13:35,585 different, 373 00:13:36,445 --> 00:13:39,105 metals. You can mix it together and, 374 00:13:39,644 --> 00:13:41,644 and make it in two d form. I 375 00:13:41,644 --> 00:13:43,825 think this kind of works are very interesting 376 00:13:43,884 --> 00:13:46,399 in the future and we are doing that. 377 00:13:47,340 --> 00:13:49,340 And have you I mean, in terms of 378 00:13:49,419 --> 00:13:50,940 yeah. I I know it's sort of early 379 00:13:50,940 --> 00:13:53,100 days in terms of studying the properties of 380 00:13:53,100 --> 00:13:55,840 these two d metals. But are there, 381 00:13:56,460 --> 00:13:58,539 I mean, do you have any experimental evidence, 382 00:13:58,539 --> 00:14:00,559 or maybe there's theoretical predictions 383 00:14:01,304 --> 00:14:04,105 that some two d metals could have very 384 00:14:04,105 --> 00:14:04,605 useful 385 00:14:05,384 --> 00:14:06,524 electronic properties, 386 00:14:07,384 --> 00:14:09,325 you know, for, I don't know, creating 387 00:14:10,585 --> 00:14:13,884 computer chips or sensors or quantum devices? 388 00:14:14,909 --> 00:14:15,409 You 389 00:14:16,110 --> 00:14:19,009 know, is there some technological relevance here? 390 00:14:19,870 --> 00:14:20,929 Sure. Sure. 391 00:14:21,389 --> 00:14:22,850 I think there are 392 00:14:23,230 --> 00:14:24,129 plenty of, 393 00:14:24,990 --> 00:14:25,490 possibilities 394 00:14:25,870 --> 00:14:28,669 in the future to do such studies. Like, 395 00:14:28,669 --> 00:14:29,569 you know, like, 396 00:14:30,105 --> 00:14:32,584 for example, just as you mentioned, like, for 397 00:14:32,584 --> 00:14:36,264 computer chips. So if, like, because right now, 398 00:14:36,264 --> 00:14:38,284 the CPU chips, like, 399 00:14:39,065 --> 00:14:42,125 so the basic elements are, transistors. 400 00:14:42,470 --> 00:14:44,710 So when the when the transistors are getting, 401 00:14:44,710 --> 00:14:46,090 like, smaller and smaller, 402 00:14:47,029 --> 00:14:49,450 like, like, so we, like, 403 00:14:49,830 --> 00:14:50,330 because, 404 00:14:51,990 --> 00:14:54,009 the Moore's law is still going. Right? 405 00:14:54,470 --> 00:14:54,970 So 406 00:14:55,429 --> 00:14:58,024 so we want to make such a fabricate, 407 00:14:58,165 --> 00:15:01,125 such transistor, such devices to be, like, even 408 00:15:01,125 --> 00:15:03,144 smaller. Like, when you, like, 409 00:15:03,524 --> 00:15:04,745 shrink shrink reduce 410 00:15:05,285 --> 00:15:07,924 the dimension of of of the size or 411 00:15:07,924 --> 00:15:10,230 the size of the device to to be 412 00:15:10,230 --> 00:15:12,470 very, very small, like, at at a a 413 00:15:12,470 --> 00:15:12,970 nanos 414 00:15:13,590 --> 00:15:16,710 at nanometer scale. So you you view we 415 00:15:16,710 --> 00:15:17,450 we view 416 00:15:17,830 --> 00:15:18,970 face this 417 00:15:19,830 --> 00:15:20,809 serious problems, 418 00:15:21,429 --> 00:15:24,330 like, about about this dimensional, 419 00:15:25,254 --> 00:15:25,754 reduction. 420 00:15:27,334 --> 00:15:30,794 For example, so every transistor use metal contacts. 421 00:15:31,095 --> 00:15:32,714 So when the metal wears 422 00:15:33,254 --> 00:15:35,754 are reducing, like, around, like, 10 nanometer 423 00:15:36,294 --> 00:15:38,334 or or something around, like, 424 00:15:38,774 --> 00:15:39,674 it will be 425 00:15:40,250 --> 00:15:43,690 less connective, and it will be face, like, 426 00:15:43,690 --> 00:15:44,909 variation problem. 427 00:15:45,450 --> 00:15:48,570 So if we we can replace such a 428 00:15:48,570 --> 00:15:49,549 connecting wires 429 00:15:49,929 --> 00:15:50,429 to, 430 00:15:51,049 --> 00:15:52,269 like, a two d metals, 431 00:15:53,075 --> 00:15:54,855 it will be much better. 432 00:15:55,394 --> 00:15:58,195 I see. Yeah. Another thing is, yeah, another 433 00:15:58,195 --> 00:15:59,254 thing is, like, 434 00:15:59,955 --> 00:16:02,835 I I I give you another example. Like, 435 00:16:03,075 --> 00:16:03,394 like, 436 00:16:04,035 --> 00:16:05,575 we know, like, like, 437 00:16:06,445 --> 00:16:09,529 like, Aaron Nickel or something like that. 438 00:16:09,909 --> 00:16:10,490 It's magnetic. 439 00:16:11,190 --> 00:16:13,509 So but, but the thing is, if you 440 00:16:13,509 --> 00:16:16,730 can make it, like, a a a single 441 00:16:17,110 --> 00:16:20,230 atomic layer of of of Aaron or or 442 00:16:20,230 --> 00:16:21,289 nickel or cobalt, 443 00:16:21,815 --> 00:16:24,075 Like, this kind of thing can give you, 444 00:16:24,615 --> 00:16:25,115 quite, 445 00:16:25,735 --> 00:16:26,955 quite, promising, 446 00:16:27,735 --> 00:16:28,235 properties, 447 00:16:28,615 --> 00:16:29,115 because, 448 00:16:30,134 --> 00:16:32,634 in theory, we have some calculations, 449 00:16:33,095 --> 00:16:33,595 previously. 450 00:16:34,320 --> 00:16:36,420 Like, if you make such kind of thing, 451 00:16:36,800 --> 00:16:39,940 you can use it for some, like, like, 452 00:16:41,040 --> 00:16:42,580 like, quantum hall effect. 453 00:16:43,040 --> 00:16:44,899 You can make some useful devices, 454 00:16:45,360 --> 00:16:46,420 like, in the future. 455 00:16:47,964 --> 00:16:51,004 And you mentioned that, you're interested in your 456 00:16:51,004 --> 00:16:52,384 lab at at exploring 457 00:16:53,404 --> 00:16:55,725 other metals, you know, whether you can make 458 00:16:55,725 --> 00:16:58,464 two d versions of other metals. Are some 459 00:16:58,684 --> 00:16:59,904 metals easier 460 00:17:00,339 --> 00:17:02,759 to make in two d than others? 461 00:17:03,379 --> 00:17:04,980 Is that what you've found, or is that 462 00:17:04,980 --> 00:17:05,880 what you expect? 463 00:17:06,819 --> 00:17:07,319 Sure. 464 00:17:07,619 --> 00:17:08,599 This is absolutely 465 00:17:08,900 --> 00:17:09,940 true. Like, 466 00:17:10,420 --> 00:17:13,460 because we we we have, we have report 467 00:17:13,460 --> 00:17:16,154 five. Right? Five type of metals. That kind 468 00:17:16,154 --> 00:17:18,795 of metals are actually are easier are easier 469 00:17:18,795 --> 00:17:21,054 to make, like, in two d forms. 470 00:17:21,674 --> 00:17:23,454 But, for some, 471 00:17:23,914 --> 00:17:27,515 some other metals, like, especially the the high 472 00:17:27,515 --> 00:17:28,815 melting point metals, 473 00:17:29,600 --> 00:17:32,000 is is where it's it's quite difficult. It's 474 00:17:32,000 --> 00:17:34,180 more difficult to, to make, 475 00:17:34,960 --> 00:17:37,140 because this is limited by, 476 00:17:37,759 --> 00:17:39,140 by by the experimental 477 00:17:39,440 --> 00:17:39,940 setup, 478 00:17:40,480 --> 00:17:42,740 because in that, you you need to, 479 00:17:43,359 --> 00:17:44,660 add a high pressure. 480 00:17:45,105 --> 00:17:47,924 At the same time, you you you you, 481 00:17:48,785 --> 00:17:49,365 you thought 482 00:17:49,664 --> 00:17:50,164 a 483 00:17:51,105 --> 00:17:53,744 high high temperature. Right? The temperature is higher 484 00:17:53,744 --> 00:17:54,545 to make your 485 00:17:55,265 --> 00:17:56,404 make these environments, 486 00:17:56,785 --> 00:17:57,845 like, more difficult. 487 00:17:59,230 --> 00:18:01,630 I see. Okay. Well, it sounds like you've 488 00:18:01,630 --> 00:18:02,269 got lots of, 489 00:18:03,149 --> 00:18:05,149 lots of potential work for you and your 490 00:18:05,149 --> 00:18:05,649 team 491 00:18:05,950 --> 00:18:06,769 in the future. 492 00:18:08,349 --> 00:18:10,349 So thanks thanks so much for coming on 493 00:18:10,349 --> 00:18:12,609 the podcast. And, again, congratulations 494 00:18:13,149 --> 00:18:13,389 for, 495 00:18:14,664 --> 00:18:18,125 for being the, recipients of the Physics World 496 00:18:18,505 --> 00:18:20,585 breakthrough of the year for 2025, 497 00:18:20,585 --> 00:18:21,724 you and your team. 498 00:18:22,184 --> 00:18:24,265 And, yeah, here at Physics World, we wish 499 00:18:24,265 --> 00:18:25,724 you all the best. 500 00:18:26,424 --> 00:18:27,164 Thank you. 501 00:18:27,740 --> 00:18:30,480 Thank you, Hamish. Thank you. See you 502 00:18:36,059 --> 00:18:36,559 later. 503 00:18:38,059 --> 00:18:39,440 That was Gong Yuzhang 504 00:18:40,015 --> 00:18:42,515 at the Institute of Physics of the Chinese 505 00:18:42,894 --> 00:18:44,115 Academy of Sciences, 506 00:18:44,654 --> 00:18:46,894 who led the team that has won the 507 00:18:46,894 --> 00:18:48,275 2025 508 00:18:48,575 --> 00:18:51,694 Physics World breakthrough of the year award for 509 00:18:51,694 --> 00:18:54,755 their pioneering work on two d metals. 510 00:18:55,349 --> 00:18:57,930 And there's much more about the Physics World 511 00:18:58,150 --> 00:19:00,650 breakthrough of the year and the nine 512 00:19:01,029 --> 00:19:03,049 runners up on the website. 513 00:19:04,309 --> 00:19:06,730 As this year is drawing to an end, 514 00:19:06,869 --> 00:19:09,670 here at Physics World, we're busy planning for 515 00:19:09,670 --> 00:19:10,845 2026. 516 00:19:11,644 --> 00:19:14,125 Joining me to chat about what will be 517 00:19:14,125 --> 00:19:15,265 hot in physics 518 00:19:15,644 --> 00:19:18,224 in the coming year is Matin Durrani, 519 00:19:18,845 --> 00:19:20,065 editor in chief 520 00:19:20,365 --> 00:19:21,585 of Physics World. 521 00:19:22,044 --> 00:19:22,784 Hi, Matin. 522 00:19:23,244 --> 00:19:24,144 Hello, Hamish. 523 00:19:24,769 --> 00:19:25,269 So, 524 00:19:25,970 --> 00:19:28,369 what's going to be hot in physics in 525 00:19:28,369 --> 00:19:29,329 2026? 526 00:19:29,329 --> 00:19:30,690 Do you have any pics? Have you got 527 00:19:30,690 --> 00:19:32,789 your crystal ball out yet? 528 00:19:33,169 --> 00:19:34,849 Well, you're right. I what I always used 529 00:19:34,849 --> 00:19:36,549 to do is I'd get my imaginary 530 00:19:36,929 --> 00:19:39,204 crystal ball out and try and predict what's 531 00:19:39,204 --> 00:19:40,644 gonna happen in physics. But you know what 532 00:19:40,644 --> 00:19:43,125 it's like, Hamish. It's so difficult to know 533 00:19:43,125 --> 00:19:44,825 what's gonna happen in physics because, 534 00:19:45,204 --> 00:19:46,244 you know, if we knew what was gonna 535 00:19:46,244 --> 00:19:48,085 happen, we wouldn't bother doing physics. We wouldn't 536 00:19:48,085 --> 00:19:49,384 get out of bed, would we? 537 00:19:50,269 --> 00:19:51,630 I mean, there were only some things that 538 00:19:51,630 --> 00:19:53,950 you can always guarantee, which are things like, 539 00:19:54,429 --> 00:19:57,630 specific space missions launching or a particle collider 540 00:19:57,630 --> 00:20:00,029 opening or a light source. And those are 541 00:20:00,029 --> 00:20:02,444 sort of the big science projects, which have 542 00:20:02,444 --> 00:20:05,325 big timetables and, you know, big plan. Those 543 00:20:05,325 --> 00:20:06,684 are the kind of things that you can 544 00:20:06,684 --> 00:20:08,125 know about for sure. 545 00:20:08,605 --> 00:20:10,845 But it's a really thankless task. So, basically, 546 00:20:10,845 --> 00:20:12,765 Hamish, to answer your question, what's gonna happen 547 00:20:12,765 --> 00:20:15,839 next year? I don't know. However, we've got 548 00:20:15,839 --> 00:20:17,599 a couple of things lined up on Physics 549 00:20:17,599 --> 00:20:18,579 World, which, 550 00:20:19,359 --> 00:20:23,119 these, online panel discussions called, Physics World Live. 551 00:20:23,119 --> 00:20:25,220 And I guess we've got three coming up, 552 00:20:25,440 --> 00:20:27,755 which in a sense is our take on 553 00:20:27,755 --> 00:20:29,595 what we think of the, the big things 554 00:20:29,595 --> 00:20:31,214 in physics happening right now. 555 00:20:31,515 --> 00:20:33,034 And these I mean, I have to say 556 00:20:33,034 --> 00:20:34,815 these are very timely topics. 557 00:20:35,515 --> 00:20:37,615 One of them is quantum metrology, 558 00:20:38,394 --> 00:20:40,554 and anything quantum is very hot. I mean, 559 00:20:40,554 --> 00:20:43,820 you're you're pretty well guaranteed that anything quantum 560 00:20:43,820 --> 00:20:47,039 will be hot and exciting in 2026. 561 00:20:47,500 --> 00:20:50,080 Another one is on fusion energy, 562 00:20:50,460 --> 00:20:53,100 and it seems like the momentum is is 563 00:20:53,100 --> 00:20:56,695 growing, isn't it, for fusion fusion energy? Lots 564 00:20:56,695 --> 00:20:59,275 of small and medium sized companies coming in 565 00:20:59,414 --> 00:20:59,894 with, 566 00:21:00,375 --> 00:21:03,654 novel technologies that they hope will sort of 567 00:21:03,654 --> 00:21:04,154 crack, 568 00:21:05,255 --> 00:21:07,515 crack what has been a very difficult problem 569 00:21:07,654 --> 00:21:09,674 getting fusion energy going. 570 00:21:10,679 --> 00:21:13,720 Medical physics, again, you know, applying physics to 571 00:21:13,720 --> 00:21:17,019 medicine is a very, very hot topic. So 572 00:21:17,079 --> 00:21:19,400 what what what are these physics world live 573 00:21:19,400 --> 00:21:21,559 events? And so what, you know, what what 574 00:21:21,640 --> 00:21:23,259 why are we covering these topics? 575 00:21:23,835 --> 00:21:25,115 Well, we've been doing this for a few 576 00:21:25,115 --> 00:21:27,115 years now, Hamish. So these are online panel 577 00:21:27,115 --> 00:21:27,615 discussions 578 00:21:27,914 --> 00:21:28,414 about, 579 00:21:29,035 --> 00:21:30,734 particular hot topics in physics. 580 00:21:31,755 --> 00:21:34,474 So anybody can register and and and watch 581 00:21:34,474 --> 00:21:37,029 them. So, yeah, the first one, which you're 582 00:21:37,029 --> 00:21:38,549 actually organizing, Hamish, so I hope you know 583 00:21:38,549 --> 00:21:40,410 what this is about. It's about quantum metrology. 584 00:21:40,549 --> 00:21:41,769 So the idea of, 585 00:21:43,509 --> 00:21:46,089 ensuring it's ways of ensuring companies and academics 586 00:21:46,470 --> 00:21:49,289 can sort of test and validate and commercialize 587 00:21:49,990 --> 00:21:52,384 new quantum tech. And we know that, you 588 00:21:52,384 --> 00:21:54,384 know, it's been the International Year of Quantum 589 00:21:54,384 --> 00:21:56,944 Science Technology, which, by the way, that is 590 00:21:56,944 --> 00:21:58,625 one thing that's happening next year. It draws 591 00:21:58,625 --> 00:22:00,704 to a close with a closing ceremony in 592 00:22:00,704 --> 00:22:02,565 Ghana, so that's something that's happening. 593 00:22:02,865 --> 00:22:04,065 And we know that there's a it's a 594 00:22:04,065 --> 00:22:06,829 burgeoning industry, and you need the metrologists 595 00:22:07,289 --> 00:22:09,069 to come in and sort of validate 596 00:22:09,369 --> 00:22:11,950 these technologies and make sure that everybody's operating 597 00:22:12,009 --> 00:22:14,409 to the same standards and principles. And you 598 00:22:14,409 --> 00:22:16,829 can sort of you could compare different 599 00:22:17,130 --> 00:22:18,970 pieces of kits, and it's really important that 600 00:22:18,970 --> 00:22:20,250 you have that in place so that the 601 00:22:20,250 --> 00:22:21,710 industry as a whole can 602 00:22:22,065 --> 00:22:24,244 can make progress. So I think quantum metrology 603 00:22:25,504 --> 00:22:27,744 is a really important area. So, well, we're 604 00:22:27,744 --> 00:22:29,924 looking forward to doing that one. Oh, definitely. 605 00:22:29,984 --> 00:22:31,504 I I was I was very lucky. I 606 00:22:31,504 --> 00:22:34,164 went to a a conference or a meeting. 607 00:22:34,490 --> 00:22:36,809 I suppose possibly it's better to describe it 608 00:22:36,809 --> 00:22:37,869 as on quantum 609 00:22:38,170 --> 00:22:38,670 metrology 610 00:22:38,970 --> 00:22:40,590 at the National Physical Laboratory 611 00:22:40,970 --> 00:22:41,789 in The UK, 612 00:22:42,650 --> 00:22:45,390 which is the, you know, the the institute 613 00:22:45,609 --> 00:22:48,090 institution in The UK that looks after things 614 00:22:48,090 --> 00:22:51,585 like standards and develops new technologies for measuring 615 00:22:52,444 --> 00:22:54,365 current, and, you know, all those sorts of 616 00:22:54,365 --> 00:22:56,125 things. And it's always a real pleasure to 617 00:22:56,125 --> 00:22:59,025 go to NPL. The physicists who work there 618 00:22:59,085 --> 00:22:59,825 are fantastic. 619 00:23:00,845 --> 00:23:02,444 They, you know, they work on some really 620 00:23:02,444 --> 00:23:04,845 interesting projects, and they're always really happy to 621 00:23:04,845 --> 00:23:05,220 chat. 622 00:23:05,700 --> 00:23:08,039 And, yeah, definitely, quantum metrology 623 00:23:08,500 --> 00:23:11,140 is, is a hot topic there. And it's 624 00:23:11,140 --> 00:23:12,119 interesting that 625 00:23:12,579 --> 00:23:14,179 one of the things that I suppose I 626 00:23:14,179 --> 00:23:15,940 never really thought of before I went to 627 00:23:15,940 --> 00:23:18,119 the conference was this distinction 628 00:23:18,579 --> 00:23:19,079 about 629 00:23:19,634 --> 00:23:20,134 using 630 00:23:21,555 --> 00:23:22,055 quantum 631 00:23:22,674 --> 00:23:23,894 to make better 632 00:23:24,595 --> 00:23:25,095 metrology, 633 00:23:27,795 --> 00:23:28,295 versus 634 00:23:28,835 --> 00:23:29,335 developing 635 00:23:29,954 --> 00:23:30,454 metrology 636 00:23:31,394 --> 00:23:33,255 to make better quantum technologies. 637 00:23:33,849 --> 00:23:36,569 And I suppose a classic example of the 638 00:23:36,569 --> 00:23:37,069 former 639 00:23:37,369 --> 00:23:37,869 is, 640 00:23:38,250 --> 00:23:40,970 an atomic clock, where you're using the, you 641 00:23:40,970 --> 00:23:44,329 know, the quantum properties of atoms and of 642 00:23:44,329 --> 00:23:44,829 lasers, 643 00:23:45,769 --> 00:23:46,589 or masers 644 00:23:47,164 --> 00:23:47,664 to, 645 00:23:48,044 --> 00:23:50,224 to to to make a a much better 646 00:23:50,845 --> 00:23:53,404 time standard. And that's a great example of 647 00:23:53,404 --> 00:23:54,304 using quantum 648 00:23:54,605 --> 00:23:55,345 for metrology. 649 00:23:56,924 --> 00:23:57,984 On the other hand, 650 00:23:58,605 --> 00:24:01,664 when you're developing new quantum technologies, 651 00:24:01,964 --> 00:24:02,625 you need 652 00:24:03,190 --> 00:24:03,690 standards, 653 00:24:04,710 --> 00:24:05,190 to, 654 00:24:05,590 --> 00:24:07,850 I suppose work out if those quantum technologies 655 00:24:07,990 --> 00:24:10,470 are are good enough for doing what you 656 00:24:10,470 --> 00:24:12,230 what you want them to do. So for 657 00:24:12,230 --> 00:24:12,730 example, 658 00:24:13,109 --> 00:24:16,230 a quantum computer is based on qubits, and 659 00:24:16,230 --> 00:24:18,964 you need to decide whether these qubits, 660 00:24:20,144 --> 00:24:22,005 remain quantum for long enough 661 00:24:22,305 --> 00:24:23,105 to do your, 662 00:24:24,464 --> 00:24:25,285 your calculation 663 00:24:25,744 --> 00:24:27,984 on the quantum computer. So, you know, you 664 00:24:27,984 --> 00:24:28,644 need to 665 00:24:29,025 --> 00:24:29,924 define standards, 666 00:24:30,920 --> 00:24:34,140 metrology standards for how good a qubit is. 667 00:24:34,519 --> 00:24:36,440 So, you know, there's two ways of looking 668 00:24:36,440 --> 00:24:39,160 at quantum metrology, you know, harnessing the power 669 00:24:39,160 --> 00:24:41,900 of quantum mechanics to make better metrology, 670 00:24:42,359 --> 00:24:43,980 and then actually developing 671 00:24:45,305 --> 00:24:49,005 metrology for new quantum technologies. So, yeah, it's 672 00:24:49,144 --> 00:24:49,644 doubly 673 00:24:50,025 --> 00:24:52,825 exciting, I think. So, yeah, stay tuned for 674 00:24:52,825 --> 00:24:53,325 that. 675 00:24:53,865 --> 00:24:56,265 Yeah. Because it's amazing things like entanglement being 676 00:24:56,265 --> 00:24:58,184 used for practical purposes. You know, I was 677 00:24:58,184 --> 00:24:58,845 at the 678 00:24:59,224 --> 00:25:00,285 Institute of Physics 679 00:25:01,480 --> 00:25:03,960 event at the Royal Institution in London last 680 00:25:03,960 --> 00:25:06,140 month in November, and there was a representative 681 00:25:06,279 --> 00:25:07,099 from the company, 682 00:25:07,720 --> 00:25:11,079 Digistain that makes entangled cam, which is this 683 00:25:11,079 --> 00:25:14,039 piece of equipment using entangled photons for medical 684 00:25:14,039 --> 00:25:14,859 physics purposes. 685 00:25:15,474 --> 00:25:16,914 And, you know, it's incredible to think that 686 00:25:16,914 --> 00:25:18,355 that's happening and that you well, you know, 687 00:25:18,355 --> 00:25:19,954 if there's other companies in the area, how 688 00:25:19,954 --> 00:25:22,274 do you make sure that they're all working 689 00:25:22,274 --> 00:25:23,714 to the same standard and that you could 690 00:25:23,714 --> 00:25:26,274 compare one entangled camera with another? You know, 691 00:25:26,274 --> 00:25:28,115 these are kind of questions that you need 692 00:25:28,115 --> 00:25:30,900 metrology for. You need that system in place. 693 00:25:31,140 --> 00:25:33,460 Like with the kilogram or the second, you 694 00:25:33,460 --> 00:25:35,539 need those systems in place so that we're 695 00:25:35,539 --> 00:25:36,820 all operating to the same, 696 00:25:37,460 --> 00:25:39,940 principles. Oh, definitely. It's a big big deal, 697 00:25:39,940 --> 00:25:41,940 and it's, you know, just that area that 698 00:25:41,940 --> 00:25:44,440 physicists make, you know, contributions to. 699 00:25:44,845 --> 00:25:46,684 And yeah. I mean, I I suppose now, 700 00:25:46,684 --> 00:25:48,924 you know, entanglement is not seen as a 701 00:25:48,924 --> 00:25:51,085 sort of a weird thing. It's seen as 702 00:25:51,085 --> 00:25:53,484 a resource. I mean, that's how how people 703 00:25:53,484 --> 00:25:55,884 describe it these days. Entanglement is a resource 704 00:25:55,884 --> 00:25:57,024 for quantum computing. 705 00:25:57,539 --> 00:25:59,720 And, so, yeah, how do you measure it? 706 00:26:00,420 --> 00:26:00,920 Exactly. 707 00:26:01,220 --> 00:26:03,320 So, yeah, I think I think quantum metrology, 708 00:26:03,539 --> 00:26:06,100 all different flavors of it, will be very 709 00:26:06,100 --> 00:26:08,580 exciting next year. Good. Because you you're organizing 710 00:26:08,580 --> 00:26:09,320 that event. 711 00:26:09,634 --> 00:26:11,315 I'm glad you're enthused about that. Well, you 712 00:26:11,315 --> 00:26:13,555 know, I've I've I've at least I've spoken 713 00:26:13,555 --> 00:26:16,355 to lots of interesting people at NPL about 714 00:26:16,355 --> 00:26:19,075 it. So, yeah, I'm sure it'll be, it'll 715 00:26:19,075 --> 00:26:20,375 be a a great success. 716 00:26:20,755 --> 00:26:22,595 And, I mean, I suppose fusion is the 717 00:26:22,595 --> 00:26:24,595 same way, isn't it, in the sense that, 718 00:26:25,309 --> 00:26:28,049 there's a lot of interest in fusion energy, 719 00:26:28,429 --> 00:26:29,329 a lot of, 720 00:26:29,710 --> 00:26:31,970 companies that are springing up with their own 721 00:26:32,109 --> 00:26:33,970 sort of takes on how to 722 00:26:34,589 --> 00:26:36,929 extract energy from the fusion of 723 00:26:37,309 --> 00:26:37,809 hydrogen 724 00:26:38,269 --> 00:26:38,769 nuclei. 725 00:26:41,365 --> 00:26:42,644 So can you tell us a bit more 726 00:26:42,644 --> 00:26:44,505 about that PW Live? 727 00:26:45,365 --> 00:26:46,884 Well, I mean, if you think of fusion, 728 00:26:46,884 --> 00:26:48,484 you tend to associate it with the big 729 00:26:48,484 --> 00:26:50,965 project like Eat Well, ITER in Southern France. 730 00:26:50,965 --> 00:26:51,845 That's a huge, 731 00:26:52,484 --> 00:26:54,700 machine being built at the moment. But there 732 00:26:54,700 --> 00:26:56,539 are a lot of private companies involved in 733 00:26:56,539 --> 00:26:58,299 this area at the moment. So not last 734 00:26:58,299 --> 00:27:00,400 week, I was at the Institute of Physics 735 00:27:00,460 --> 00:27:01,279 business awards 736 00:27:02,220 --> 00:27:04,539 in London at the Houses of Parliament, and 737 00:27:04,539 --> 00:27:06,720 there was somebody from Tokamak Energy 738 00:27:07,244 --> 00:27:09,424 who, they won one of the business awards. 739 00:27:09,565 --> 00:27:11,345 And she was their chief 740 00:27:11,644 --> 00:27:13,805 technology officer and used to work at Rolls 741 00:27:13,805 --> 00:27:16,224 Royce Aerospace in Derby. 742 00:27:16,605 --> 00:27:16,924 And, 743 00:27:17,805 --> 00:27:18,924 you know, she said to me, and I 744 00:27:18,924 --> 00:27:21,345 didn't quite realize this, they have 300 745 00:27:21,950 --> 00:27:23,410 members of staff there including 746 00:27:24,190 --> 00:27:26,750 a 120 people with PhDs. So, you know, 747 00:27:26,750 --> 00:27:29,630 these are, you know, big companies, serious companies 748 00:27:29,630 --> 00:27:31,789 with a lot of effort being put into, 749 00:27:31,789 --> 00:27:33,250 you know, harnessing fusion 750 00:27:33,549 --> 00:27:34,769 as an energy source 751 00:27:35,524 --> 00:27:37,204 and building the magnets and so on and 752 00:27:37,204 --> 00:27:38,644 coming up with designs for how it would 753 00:27:38,644 --> 00:27:41,204 work. So, yeah, that that's, you know, that's 754 00:27:41,204 --> 00:27:42,005 gonna be in the, 755 00:27:43,125 --> 00:27:44,404 towards the end of next year when we 756 00:27:44,404 --> 00:27:46,005 have that Physics World Live. So, yeah, looking 757 00:27:46,005 --> 00:27:48,244 forward to that one. Yeah. That'll be interesting. 758 00:27:48,244 --> 00:27:49,524 I mean, I have to say I'm a, 759 00:27:49,524 --> 00:27:51,420 you know, sort of a slight skeptic 760 00:27:51,960 --> 00:27:53,180 when it comes to fusion. 761 00:27:53,720 --> 00:27:56,119 And, I I often wonder that, 762 00:27:57,079 --> 00:27:58,519 you know, the reason why we have all 763 00:27:58,519 --> 00:27:59,740 these small and medium 764 00:28:00,039 --> 00:28:01,019 sized companies 765 00:28:01,559 --> 00:28:03,980 is that it's turning out to be incredibly 766 00:28:04,200 --> 00:28:04,700 expensive 767 00:28:05,160 --> 00:28:06,380 to build a large 768 00:28:06,704 --> 00:28:07,684 fusion facility. 769 00:28:08,224 --> 00:28:09,525 And we sort of think, well, 770 00:28:10,544 --> 00:28:11,684 maybe that's the problem. 771 00:28:12,304 --> 00:28:14,065 It's that we're trying to build a large 772 00:28:14,065 --> 00:28:16,484 one. Maybe we can build a small one. 773 00:28:16,625 --> 00:28:18,625 But I don't I don't know. Is that 774 00:28:18,625 --> 00:28:21,265 backed by physics and engineering? Or is it 775 00:28:21,265 --> 00:28:23,430 just, well, we tried it one way, and 776 00:28:23,430 --> 00:28:24,809 it's taking a long time. 777 00:28:25,190 --> 00:28:26,869 And, you know, we haven't got the results 778 00:28:26,869 --> 00:28:28,630 that we've wanted, so we just try it 779 00:28:28,630 --> 00:28:30,390 another way. I mean, that's fair enough. I 780 00:28:30,390 --> 00:28:32,970 suppose that's a a fairer way to innovate. 781 00:28:33,349 --> 00:28:35,349 But, I mean, there's that notion of there's 782 00:28:35,349 --> 00:28:37,029 that notion that we covered in physics world 783 00:28:37,029 --> 00:28:38,205 this year of unobtanium. 784 00:28:39,065 --> 00:28:40,984 The idea that you set yourself a challenge 785 00:28:40,984 --> 00:28:43,305 knowing it may might not be possible. Yeah. 786 00:28:43,545 --> 00:28:45,325 But, you know, trying to get there 787 00:28:45,705 --> 00:28:48,265 as a target is a useful exercise because 788 00:28:48,265 --> 00:28:50,345 other good things might happen along the way. 789 00:28:50,345 --> 00:28:51,705 And, you know, you hope you achieve it 790 00:28:51,705 --> 00:28:53,529 and if you but if you don't, you 791 00:28:53,529 --> 00:28:55,930 may come up with other breakthroughs or other 792 00:28:55,930 --> 00:28:59,289 developments that are also useful. So unobtanium, I 793 00:28:59,289 --> 00:29:00,730 think, is quite a nice way of putting 794 00:29:00,730 --> 00:29:01,230 it. 795 00:29:02,250 --> 00:29:04,650 Again, the other idea is vaporware, the idea 796 00:29:04,650 --> 00:29:06,515 that something sort of so ethereal that you 797 00:29:06,515 --> 00:29:08,595 you may it may never even happen, but, 798 00:29:08,595 --> 00:29:10,595 you know, still worth pursuing. So, yeah, fusion 799 00:29:10,595 --> 00:29:10,835 is, 800 00:29:11,394 --> 00:29:13,255 you know, exciting times at the moment. 801 00:29:13,794 --> 00:29:16,275 So medical physics, I mean, that's a a 802 00:29:16,275 --> 00:29:17,095 very broad, 803 00:29:17,960 --> 00:29:18,460 field. 804 00:29:19,319 --> 00:29:21,019 Has that one been narrowed down, 805 00:29:21,400 --> 00:29:23,400 that PW Live? Or Well, we got a 806 00:29:23,400 --> 00:29:25,240 couple of speakers lined up for this one, 807 00:29:25,240 --> 00:29:25,880 which is, 808 00:29:26,839 --> 00:29:29,400 we're running it in July to celebrate the 809 00:29:29,400 --> 00:29:31,180 seventieth anniversary of the journal 810 00:29:31,755 --> 00:29:34,815 Physics in Medicine and Biology, which IOP Publishing 811 00:29:34,954 --> 00:29:35,454 publishes, 812 00:29:35,914 --> 00:29:38,015 on behalf of the Institute of Physics 813 00:29:38,394 --> 00:29:40,255 and Engineering in Medicine, IPEN. 814 00:29:40,795 --> 00:29:43,434 So it's celebrating its seventieth anniversary. So we've 815 00:29:43,434 --> 00:29:46,389 got the current editor in chief and two 816 00:29:46,389 --> 00:29:49,029 former editors editors in chief lined up to 817 00:29:49,029 --> 00:29:52,409 speak about the role of medical physics in, 818 00:29:53,109 --> 00:29:55,589 medicine and biology and how that field has 819 00:29:55,589 --> 00:29:57,795 evolved over the last seventy years. So that's 820 00:29:57,795 --> 00:29:59,394 definitely one to look forward to. And, yeah, 821 00:29:59,394 --> 00:30:00,755 a lot lots going on in that area 822 00:30:00,755 --> 00:30:02,055 as well as we all know, 823 00:30:02,515 --> 00:30:05,075 all sorts of different things. Oh, interesting. Yeah. 824 00:30:05,075 --> 00:30:07,075 I just I I did a podcast interview 825 00:30:07,075 --> 00:30:08,535 today, earlier today. 826 00:30:08,914 --> 00:30:11,075 I've, the microphones have been out all day 827 00:30:11,075 --> 00:30:12,535 today. It's been very busy 828 00:30:12,880 --> 00:30:13,380 with, 829 00:30:14,640 --> 00:30:15,440 someone called, 830 00:30:15,839 --> 00:30:18,579 Luke Cox at a company called Impulsonics. 831 00:30:19,279 --> 00:30:20,339 And they're using, 832 00:30:22,240 --> 00:30:22,740 ultrasound, 833 00:30:24,319 --> 00:30:26,259 in a medical application that, 834 00:30:26,585 --> 00:30:27,404 you know, it's nothing 835 00:30:27,865 --> 00:30:29,644 to do with ultrasound imaging. 836 00:30:30,025 --> 00:30:32,664 It's using the effect of ultra ultrasound on 837 00:30:32,664 --> 00:30:33,164 cells 838 00:30:33,785 --> 00:30:35,644 to, you know, to 839 00:30:36,825 --> 00:30:39,704 encourage processes that could ultimately be used for 840 00:30:39,704 --> 00:30:41,565 things like personalized medicine. 841 00:30:42,169 --> 00:30:44,250 So, yeah, I mean, things are very exciting 842 00:30:44,250 --> 00:30:46,329 in medical physics. Yeah. Well, we saw the, 843 00:30:46,650 --> 00:30:48,809 physics well, our own top 10 breakthroughs for 844 00:30:48,809 --> 00:30:49,609 2025 845 00:30:49,609 --> 00:30:52,029 that included one of the breakthroughs was on 846 00:30:52,089 --> 00:30:54,809 proton arc therapy. And, of course, proton therapy, 847 00:30:54,809 --> 00:30:56,329 you know, twenty years ago is brand new, 848 00:30:56,329 --> 00:30:57,549 and that's being refined 849 00:30:57,884 --> 00:31:00,684 further and further. So, yeah, lots lots going 850 00:31:00,684 --> 00:31:02,445 on in that field. So, yeah, medical physics 851 00:31:02,445 --> 00:31:03,005 will be the, 852 00:31:03,724 --> 00:31:05,184 physics worldwide in July. 853 00:31:05,644 --> 00:31:08,205 And there's one more thing, I think that 854 00:31:08,205 --> 00:31:10,445 we can preview, Matin, and that is that 855 00:31:10,445 --> 00:31:11,265 our colleague, 856 00:31:12,019 --> 00:31:15,059 Margaret Harris, is going to the Global Physics 857 00:31:15,059 --> 00:31:16,579 Summit, which is the big, 858 00:31:17,220 --> 00:31:18,279 APS shindig. 859 00:31:18,740 --> 00:31:19,720 That's in March, 860 00:31:20,259 --> 00:31:21,559 in Boulder, Colorado. 861 00:31:22,339 --> 00:31:24,819 And she'll be doing a a live event 862 00:31:24,819 --> 00:31:27,544 there. Is that right? That's right. So Margaret 863 00:31:27,605 --> 00:31:30,325 and will be, hosting a Physics Worldwide at 864 00:31:30,325 --> 00:31:33,125 the Global Physics Summit, for people who are 865 00:31:33,125 --> 00:31:35,065 attending that in Denver and Colorado, 866 00:31:35,524 --> 00:31:37,284 which is funny because I went there in 867 00:31:37,284 --> 00:31:38,585 2020 868 00:31:38,804 --> 00:31:41,079 just when the pandemic struck. And I was 869 00:31:41,079 --> 00:31:42,200 there with lots of other people, and the 870 00:31:42,200 --> 00:31:43,339 whole meeting was canceled. 871 00:31:43,879 --> 00:31:45,879 And that was a very strange experience. So 872 00:31:45,879 --> 00:31:47,960 we spent a week, six well, it'd be 873 00:31:47,960 --> 00:31:49,099 six years ago now, 874 00:31:49,799 --> 00:31:51,019 you know, in this cavernous 875 00:31:52,904 --> 00:31:55,225 auditorium and conference hall with nothing going on, 876 00:31:55,225 --> 00:31:56,904 and all the companies were sort of packing 877 00:31:56,904 --> 00:31:59,465 their exhibits away. So it's back in Denver 878 00:31:59,465 --> 00:32:01,545 in, in in the spring. So, yeah, that 879 00:32:01,625 --> 00:32:03,384 that's what Margaret will be doing about careers 880 00:32:03,384 --> 00:32:05,519 in physics. And, of course, we know that, 881 00:32:05,519 --> 00:32:07,440 you know, physics degree can open all sorts 882 00:32:07,440 --> 00:32:08,960 of doors, but often there are so many 883 00:32:08,960 --> 00:32:10,559 doors that it can open that people aren't 884 00:32:10,559 --> 00:32:12,980 aware of all the opportunities that are available. 885 00:32:13,039 --> 00:32:14,720 So we'll be looking at some of the 886 00:32:14,720 --> 00:32:16,160 options that you can do, 887 00:32:16,559 --> 00:32:18,480 with a degree in physics. So that's another 888 00:32:18,480 --> 00:32:20,160 thing to keep an eye out for next 889 00:32:20,160 --> 00:32:22,234 year. Sounds good. I've I think I've been 890 00:32:22,234 --> 00:32:24,634 to a few APS conferences in Denver. And, 891 00:32:24,634 --> 00:32:25,674 you know, I have to say the best 892 00:32:25,674 --> 00:32:27,615 thing about going to a conference in Denver 893 00:32:27,835 --> 00:32:30,335 is that it's very close to Boulder, Colorado, 894 00:32:30,794 --> 00:32:33,355 which is the headquarters of, an well, not 895 00:32:33,355 --> 00:32:35,294 the headquarters, but one of the big, 896 00:32:35,900 --> 00:32:37,519 sort of outposts of NIST, 897 00:32:37,900 --> 00:32:40,480 the, American Standards Institute, 898 00:32:40,940 --> 00:32:43,900 which, like NBL, is a fantastic place to 899 00:32:43,900 --> 00:32:47,179 visit. Lots of amazing physicists there doing some 900 00:32:47,179 --> 00:32:50,644 incredible work. So, who knows? Maybe Margaret will, 901 00:32:51,125 --> 00:32:52,725 be able to visit the folks at NIST 902 00:32:52,725 --> 00:32:53,305 as well. 903 00:32:53,684 --> 00:32:55,365 Yeah. That's where I mean, I know in 904 00:32:55,365 --> 00:32:56,884 in Boulder, they do a lot of on 905 00:32:56,884 --> 00:32:59,365 the the atomic clock work is done there. 906 00:32:59,365 --> 00:33:00,005 So that's, 907 00:33:00,325 --> 00:33:00,750 great. 908 00:33:01,230 --> 00:33:02,670 The other thing to mention, Hamish, that I 909 00:33:02,670 --> 00:33:04,430 should also add in is that our colleagues 910 00:33:04,430 --> 00:33:06,509 at the Institute of Physics in London are 911 00:33:06,509 --> 00:33:07,009 doing, 912 00:33:07,869 --> 00:33:09,410 more of their impact projects. 913 00:33:09,869 --> 00:33:12,029 These are the sort of in-depth reports looking 914 00:33:12,029 --> 00:33:15,164 at important tech technology areas. So they're doing 915 00:33:15,164 --> 00:33:16,224 more work on, 916 00:33:16,845 --> 00:33:17,345 artificial 917 00:33:17,964 --> 00:33:18,464 intelligence, 918 00:33:19,085 --> 00:33:20,845 and they're also starting a new impact project 919 00:33:20,845 --> 00:33:22,684 on medical physics, which ties in with what 920 00:33:22,684 --> 00:33:24,865 we were saying about medical physics being important. 921 00:33:25,085 --> 00:33:28,204 So those three areas, AI, metamaterials, and medical 922 00:33:28,204 --> 00:33:30,140 physics, the Institute of Physics will be looking 923 00:33:30,140 --> 00:33:32,539 at with their impact reports, which are we've 924 00:33:32,539 --> 00:33:33,259 done ones, 925 00:33:33,740 --> 00:33:36,619 previously on quantum physics and the green economy. 926 00:33:36,619 --> 00:33:38,380 So those are sort of three areas that 927 00:33:38,380 --> 00:33:40,559 are, you know, also hot topics. 928 00:33:40,934 --> 00:33:42,214 Like I say with physics, I said to 929 00:33:42,214 --> 00:33:43,575 you a few minutes ago, Amish, you never 930 00:33:43,575 --> 00:33:45,654 can quite predict exactly what will happen, and 931 00:33:45,654 --> 00:33:47,575 so I'm not going to. But I think 932 00:33:47,575 --> 00:33:49,494 these areas that I've talked about, we've talked 933 00:33:49,494 --> 00:33:51,654 about, kinda give a sense of, you know, 934 00:33:51,654 --> 00:33:53,734 where the where the hot topics are in 935 00:33:53,734 --> 00:33:55,335 in physics right now as far as we're 936 00:33:55,335 --> 00:33:55,835 concerned. 937 00:33:56,190 --> 00:33:58,829 So, yeah, lots to look forward to, in 938 00:33:58,829 --> 00:33:59,970 2026. 939 00:34:00,509 --> 00:34:02,349 I'm afraid that's all the time we have 940 00:34:02,349 --> 00:34:05,329 for this episode, which is supported by reports 941 00:34:05,470 --> 00:34:07,250 on progress in physics. 942 00:34:08,045 --> 00:34:11,025 Thanks to Gong Yoo Zhong and Matin Dharani 943 00:34:11,164 --> 00:34:12,545 for joining me today, 944 00:34:12,844 --> 00:34:15,105 and a special thanks to our producer, 945 00:34:15,405 --> 00:34:16,385 Fred Iles.