Rersearch &amp; Innovation / en 'No small feat': 老司机直播's Anatole von Lilienfeld is using AI to explore the vastness of 'chemical space' /news/no-small-feat-u-t-s-anatole-von-lilienfeld-using-ai-explore-vastness-chemical-space <span class="field field--name-title field--type-string field--label-hidden">'No small feat': 老司机直播's Anatole von Lilienfeld is using AI to explore the vastness of 'chemical space'</span> <div class="field field--name-field-featured-picture field--type-image field--label-hidden field__item"> <img loading="eager" srcset="/sites/default/files/styles/news_banner_370/public/anatole-von-lilienfeld---photo-by-Diana-Tyszko-crop.jpg?h=afdc3185&amp;itok=GHaf1-QF 370w, /sites/default/files/styles/news_banner_740/public/anatole-von-lilienfeld---photo-by-Diana-Tyszko-crop.jpg?h=afdc3185&amp;itok=rhwGcmab 740w, /sites/default/files/styles/news_banner_1110/public/anatole-von-lilienfeld---photo-by-Diana-Tyszko-crop.jpg?h=afdc3185&amp;itok=VFz_O5Kq 1110w" sizes="(min-width:1200px) 1110px, (max-width: 1199px) 80vw, (max-width: 767px) 90vw, (max-width: 575px) 95vw" width="740" height="494" src="/sites/default/files/styles/news_banner_370/public/anatole-von-lilienfeld---photo-by-Diana-Tyszko-crop.jpg?h=afdc3185&amp;itok=GHaf1-QF" alt="&quot;&quot;"> </div> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span>Christopher.Sorensen</span></span> <span class="field field--name-created field--type-created field--label-hidden"><time datetime="2022-12-05T11:55:07-05:00" title="Monday, December 5, 2022 - 11:55" class="datetime">Mon, 12/05/2022 - 11:55</time> </span> <div class="clearfix text-formatted field field--name-field-cutline-long field--type-text-long field--label-above"> <div class="field__label">Cutline</div> <div class="field__item">Anatole von Lilienfeld is one of the world's brightest visionaries on the use of computers to understand the vastness of chemical space. (photo by Diana Tyszko)</div> </div> <div class="field field--name-field-author-reporters field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/taxonomy/term/6855" hreflang="en">Erin Warner</a></div> </div> <div class="field field--name-field-topic field--type-entity-reference field--label-above"> <div class="field__label">Topic</div> <div class="field__item"><a href="/news/topics/our-community" hreflang="en">Our Community</a></div> </div> <div class="field field--name-field-story-tags field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/tags/acceleration-consortium" hreflang="en">Acceleration Consortium</a></div> <div class="field__item"><a href="/news/tags/institutional-strategic-initiatives" hreflang="en">Institutional Strategic Initiatives</a></div> <div class="field__item"><a href="/news/tags/artificial-intelligence" hreflang="en">Artificial Intelligence</a></div> <div class="field__item"><a href="/news/tags/department-chemistry" hreflang="en">Department of Chemistry</a></div> <div class="field__item"><a href="/news/tags/faculty-applied-science-engineering" hreflang="en">Faculty of Applied Science &amp; Engineering</a></div> <div class="field__item"><a href="/news/tags/faculty-arts-science" hreflang="en">Faculty of Arts &amp; Science</a></div> <div class="field__item"><a href="/news/tags/rersearch-innovation" hreflang="en">Rersearch &amp; Innovation</a></div> <div class="field__item"><a href="/news/tags/vector-institute" hreflang="en">Vector Institute</a></div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>The University of Toronto鈥檚 <strong>Anatole von Lilienfeld</strong>&nbsp;navigates space&nbsp;鈥&nbsp;but rather than exploring the depths of the universe, his artificial intelligence-powered&nbsp;work focuses on 鈥渃hemical space鈥 and&nbsp;the untapped potential of undiscovered chemical combinations.</p> <p>The inaugural Clark Chair in Advanced Materials at 老司机直播 and the Vector Institute for Artificial Intelligence&nbsp;鈥&nbsp;and a pivotal member of 老司机直播's&nbsp;<a href="https://acceleration.utoronto.ca/">Acceleration Consortium</a>&nbsp;鈥 von Lilienfeld&nbsp;is one of the world's foremost visionaries for the use of computers to understand the vastness of chemical space.</p> <p>Von Lilienfeld, a professor jointly appointed to 老司机直播鈥檚 department of chemistry in the Faculty of Arts &amp; Science and the department of materials science and engineering in the Faculty of Applied Science &amp; Engineering, was a speaker at the Acceleration Consortium鈥檚 first annual Accelerate conference earlier this year. The four-day program explored the power of self-driving labs, an emerging technology that combines AI, automation and advanced computing to accelerate materials and molecular discovery.</p> <p>Writer<strong> Erin Warner&nbsp;</strong>recently spoke with&nbsp;von Lilienfeld about the digitization of chemistry and what the future holds.</p> <hr> <p><strong>How big is chemical space?</strong></p> <p>We are surrounded by materials and molecules. Consider the chemical compounds that make up our clothing, the pavement we walk on, and the batteries in our electric cars. Now think about the new possible combinations that are out there waiting to be discovered, such as catalysts for effective atmospheric CO2 capture and utilization, low-carbon cement, lightweight biodegradable composites, membranes for water filtration, and potent molecules for treatment of cancer and bacterial-resistant disease.</p> <p>In a practical sense, chemical space is infinite and searching it is no small feat. A lower estimate says it contains 10<sup>60</sup>&nbsp;compounds 鈥 more than the number of atoms in our solar system.</p> <p><strong>Why do we need to accelerate the search for new materials?</strong></p> <p>Many of the most widely used materials no longer serve us. Most of the world鈥檚 plastic waste generated to date has not yet been recycled. But the materials that will power the future will hopefully be sustainable, circular, and inexpensive.</p> <p>Conventional chemistry is slow, a series of often tedious trial and error that limits our ability to explore beyond a small subset of possibilities. However, AI can accelerate the process by predicting which combinations might result in a material with the set of desired characteristics we are looking for (e.g., conductive, biodegradable, etc.).</p> <p>This is but onestep in self-driving laboratories, an emerging technology that combines AI, automation, and advanced computing to reduce the time and cost of discovering and developing materials by up to 90 per cent.</p> <p><strong>How can human chemists and AI work together effectively?&nbsp;</strong></p> <p>AI is a tool that humans can use to accelerate and improve their own research. It can be thought of as the fourth pillar of science. The pillars, which build on each other, include experimentation, theory, computer simulation and AI.</p> <p>Experimentation is the foundation. We experiment with the aim of improving the physical world for humans. Then comes theory to give your experiments shape and direction. But theory has its limitations. Without computer simulation, the amount of computation needed to support scientific research would take far longer than a lifetime. But even computers have constraints.</p> <p>With difficult equations come the need for high-performance computing, which can be quite costly. This is where AI comes in. AI is a less costly alternative. It can help scientists predict both an experimental and computational outcome. And the more theory we build into the AI model, the better the prediction. AI can also be used to power a robotic lab, allowing the lab the ability to run 24/7. Human chemists will not be replaced; instead, they can hand off tedious hours of trial and error to focus more on designing the objectives and other higher-level analysis.</p> <p><strong>Are there any limitations to AI, like the ones you described in the other pillars of science?</strong></p> <p>Yes, it is important to note that AI is not a silver bullet, and that there is a cost associated with it that can be measured in data acquisition. You cannot use AI without data. And data acquisition requires experimenting and recording the outcome in a way that can be processed by computers. Like a human, the AI then learns by reviewing the data and making an extrapolation or prediction.</p> <p>Data acquisition is costly, both financially and in terms of its carbon footprint. To address this, the goal is to improve the AI. If you can encode our understanding of physics into the AI, it becomes more efficient and requires less data to learn but provides the same predictive qualities. If less data is needed for training, then the AI model becomes smaller.</p> <p>Rather than just using AI as a tool, the chemist can also interrogate it to see how well its data captures theory, perhaps leading to the discovery of a new relative law for chemistry. While this interactive relationship is not as common, it may be on the horizon and could improve our theoretical understanding of the world</p> <p><strong>How can we make AI for discovery more accessible?</strong></p> <p>The first way is open-source research. In the emerging field of accelerated science, there are many proponents of open-source access. Not only are journals providing access to research papers, but also in many cases to the data, which is a major component for making the field more accessible.</p> <p>There are also repositories for models and code, like GitHub. Data sets can record and encode a lot of value.Providing more open access to data, which can be too costly for some to generate on their own, could lead to scientific advancements that ultimately benefit all of humanity. Scientists can then use the data from other scientists to ask their own research questions and make their own AI models.</p> <p>A second way to expand AI for discovery is to include more students. We need to teach basic computer science and coding skills as part of a chemistry or materials science education. Schools around the world are beginning to update their curricula to this effect, but we still need to see more incorporate this essential training. The future of the sciences is digital.</p> <p><strong>How do initiatives like Acceleration Consortium, and a conference like Accelerate, help advance the field?</strong></p> <p>We are at the dawn of truly digitizing the chemical sciences. Coordinated, joint efforts, such as the Acceleration Consortium, will play a crucial role in synchronizing efforts not only at the technical but also at the societal level, thereby enabling the worldwide implementation of an 鈥榰pdated鈥 version of chemical engineering with unprecedented advantages for humanity at large. The consortium also serves to connect academia and industry, two worlds that could benefit from a closer relationship. Visionaries in the commercial sector can dream up opportunities, and the consortium will be there to help make the science work. The groundbreaking nature of AI is that it can be applied to any sector. AI is on a trajectory to have an even greater impact than the advent of computers.</p> <p>Accelerate, the consortium鈥檚 first annual conference, was a great rallying event for the community and was a reminder that remarkable things can come from a gathering of bright minds. While Zoom has done a lot for us during the pandemic, it cannot easily replicate the excitement and enthusiasm often cultivated at an in-person conference and which are needed to direct research and encourage a group to pursue a complex goal.</p> <p><img alt src="/sites/default/files/Anatole-von-Lilienfeld_Accelerate-conference---photo-by-Clifton-Li-crop.jpg" style="width: 750px; height: 500px;"></p> <p><em>Anatole von Lilienfeld at the first annual Accelerate conference (photo by Clifton Li)</em></p> <p><strong>What area of chemical space fascinates you the most?</strong></p> <p>Catalysts, which enable a certain chemical reaction to occur but remain unchanged in the process. A century ago, Haber and Bosch developed a catalytic process that would allow the transformation of nitrogen鈥攖he dominant substance in the air we breathe鈥攊nto ammonia. Ammonia is a crucial starting material for chemical industries, but also for fertilizers. It made the mass production of fertilizers possible and saved millions of people from starvation. Major fractions of humanity would not exist right now if it were not for this catalyst.</p> <p>From a physics point of view, what defines and controls catalyst activity and components are fascinating questions. They might also be critical for helping us address some of our most pressing challenges. If we were to find a catalyst that could use sunlight to turn nitrogen rapidly and efficiently into ammonia, we might be able to solve our energy problem by using ammonia for fuel. You can think of the reactions that catalysts enable as ways of traveling through chemical space and to connect different states of matter.</p> </div> <div class="field field--name-field-news-home-page-banner field--type-boolean field--label-above"> <div class="field__label">News home page banner</div> <div class="field__item">Off</div> </div> Mon, 05 Dec 2022 16:55:07 +0000 Christopher.Sorensen 178380 at Percentage of breast cancer survivors in Canada doubles over past 15 years, study finds /news/percentage-breast-cancer-survivors-canada-doubles-over-past-15-years-study-finds <span class="field field--name-title field--type-string field--label-hidden">Percentage of breast cancer survivors in Canada doubles over past 15 years, study finds</span> <div class="field field--name-field-featured-picture field--type-image field--label-hidden field__item"> <img loading="eager" srcset="/sites/default/files/styles/news_banner_370/public/GettyImages-1175597493-crop.jpg?h=afdc3185&amp;itok=sfG7Rp23 370w, /sites/default/files/styles/news_banner_740/public/GettyImages-1175597493-crop.jpg?h=afdc3185&amp;itok=F7Wex2TF 740w, /sites/default/files/styles/news_banner_1110/public/GettyImages-1175597493-crop.jpg?h=afdc3185&amp;itok=vEg2SaBY 1110w" sizes="(min-width:1200px) 1110px, (max-width: 1199px) 80vw, (max-width: 767px) 90vw, (max-width: 575px) 95vw" width="740" height="494" src="/sites/default/files/styles/news_banner_370/public/GettyImages-1175597493-crop.jpg?h=afdc3185&amp;itok=sfG7Rp23" alt="bald woman is doing yoga in her living room"> </div> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span>Christopher.Sorensen</span></span> <span class="field field--name-created field--type-created field--label-hidden"><time datetime="2022-10-27T11:37:10-04:00" title="Thursday, October 27, 2022 - 11:37" class="datetime">Thu, 10/27/2022 - 11:37</time> </span> <div class="clearfix text-formatted field field--name-field-cutline-long field--type-text-long field--label-above"> <div class="field__label">Cutline</div> <div class="field__item">A study shows there are 2.5 times as many breast cancer survivors in Canada today as there were in 2007 鈥 a success story that brings some new health challenges (photo by Boogich/Getty Images)</div> </div> <div class="field field--name-field-author-reporters field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/authors-reporters/jelena-damjanovic" hreflang="en">Jelena Damjanovic</a></div> </div> <div class="field field--name-field-topic field--type-entity-reference field--label-above"> <div class="field__label">Topic</div> <div class="field__item"><a href="/news/topics/breaking-research" hreflang="en">Breaking Research</a></div> </div> <div class="field field--name-field-story-tags field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/tags/breast-cancer" hreflang="en">Breast Cancer</a></div> <div class="field__item"><a href="/news/tags/cancer" hreflang="en">Cancer</a></div> <div class="field__item"><a href="/news/tags/faculty-kinesiology-physical-education" hreflang="en">Faculty of Kinesiology &amp; Physical Education</a></div> <div class="field__item"><a href="/news/tags/rersearch-innovation" hreflang="en">Rersearch &amp; Innovation</a></div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>It was the information she couldn鈥檛 find that led <strong>Amy Kirkham</strong>, an assistant professor in the University of Toronto鈥檚 Faculty of Kinesiology &amp; Physical Education (KPE), to her latest discovery.</p> <p>Asked by the Canadian Women鈥檚 Heart Health Alliance to co-author a scientific statement paper in 2020 on the state of women鈥檚 heart health in Canada, Kirkham - whose research is focused on preventing and treating the risk of heart disease related to breast cancer treatment 鈥 needed to know what percentage of the Canadian female population has a history of breast cancer.</p> <p>But the most recent statistic she could find 鈥 one percent 鈥 was from 2007.</p> <p>鈥淣early 15 years had passed and I could not find a more recent citation about the prevalence of breast cancer survivors in Canada,鈥 says Kirkham. 鈥淏reast cancer mortality rates had continued to improve 26 per cent over this time period, so I suspected that this number was no longer accurate.鈥</p> <div class="image-with-caption left"> <p><img alt src="/sites/default/files/Amy.jpg" style="width: 250px; height: 313px;"><em>Amy Kirkham</em></p> </div> <p>So, in collaboration with&nbsp;<strong>Katarzyna Jerzak</strong>, a medical oncologist at Sunnybrook Odette Cancer Centre and assistant professor in the department of medicine in 老司机直播鈥檚 Temerty Faculty of Medicine, Kirkham embarked on a&nbsp;new study&nbsp;that would determine an up-to-date estimate of the prevalence of breast cancer survivors in Canada in 2022 using the Canadian Cancer Society鈥檚 annual cancer statistic reports.</p> <p>The study, <a href="https://jnccn.org/view/journals/jnccn/20/9/article-p1005.xml">recently published in the&nbsp;<em>Journal of the National Comprehensive Cancer Network</em>,</a> found that in the 15-year span from 2007 to 2021, there were 370,756 patients (2.1 per cent of the adult female population in Canada in 2022) diagnosed with breast cancer and 86 per cent of these women would have survived breast cancer by 2022.&nbsp;</p> <p>鈥淭his indicates that the prevalence of breast cancer survivors in the Canadian female population has doubled and that there are 2.5 times more survivors since the last estimate in 2007,鈥 says Kirkham.&nbsp;</p> <p>The prior estimate did not include the age group of survivors, but according to the new estimate provided by Kirkham and Jerzak, breast cancer survivors represent one per cent of Canadian women in the typical working and/or child-raising age group (20 to 64 years) and 5.4 per cent of senior (aged 65-plus) Canadian women.&nbsp;</p> <p>But it鈥檚 not all good news.</p> <p>Many of the treatments that have improved breast cancer mortality rates also cause short-term and long-term side effects, which, in turn, can raise the risk of death from other causes such as heart disease, stroke, Alzheimer鈥檚 disease, liver disease and other non-fatal health outcomes.</p> <p>鈥淭he most common cause of death in women with breast cancer is heart disease,鈥 Kirkham says.&nbsp;</p> <p>Such conditions&nbsp;also affect overall health-care costs.</p> <p>To demonstrate the excess health-care costs related to heart disease, Kirkham and Jerzak performed an additional analysis using Canadian data on rates of hospitalization for heart failure and their costs. They found that two per cent of the women diagnosed with breast cancer between 2007 and 2021 would likely experience heart failure hospitalization costing $66.5 million in total. As much as 25 per cent of these costs, or $16.5 million, were in excess of those costs that would be associated with women who did not have breast cancer.&nbsp;</p> <p>鈥淕iven the excess health-care costs, potential for reduced contributions to the workforce&nbsp;and reduced quality of life associated with long-term side effects and risk of excess death among breast cancer survivors, our work highlights that there is a growing segment of the population who require services to support recovery following breast cancer treatment," says Kirkham.</p> <p>鈥淭he goal of my&nbsp;research lab&nbsp;is to develop new therapies to improve the health of women after surviving breast cancer.鈥&nbsp;</p> <p>&nbsp;</p> </div> <div class="field field--name-field-news-home-page-banner field--type-boolean field--label-above"> <div class="field__label">News home page banner</div> <div class="field__item">Off</div> </div> Thu, 27 Oct 2022 15:37:10 +0000 Christopher.Sorensen 177771 at 老司机直播's Sajeev John receives Gerhard Herzberg Canada Gold Medal for work on harnessing flow of photons /news/u-t-s-sajeev-john-receives-gerhard-herzberg-canada-gold-medal-work-harnessing-flow-photons <span class="field field--name-title field--type-string field--label-hidden">老司机直播's Sajeev John receives Gerhard Herzberg Canada Gold Medal for work on harnessing flow of photons</span> <div class="field field--name-field-featured-picture field--type-image field--label-hidden field__item"> <img loading="eager" srcset="/sites/default/files/styles/news_banner_370/public/2023-04/144A8331-lead.jpeg?h=c410edb3&amp;itok=xAknck7l 370w, /sites/default/files/styles/news_banner_740/public/2023-04/144A8331-lead.jpeg?h=c410edb3&amp;itok=shXiVsCu 740w, /sites/default/files/styles/news_banner_1110/public/2023-04/144A8331-lead.jpeg?h=c410edb3&amp;itok=jn-oJ1cz 1110w" sizes="(min-width:1200px) 1110px, (max-width: 1199px) 80vw, (max-width: 767px) 90vw, (max-width: 575px) 95vw" width="740" height="494" src="/sites/default/files/styles/news_banner_370/public/2023-04/144A8331-lead.jpeg?h=c410edb3&amp;itok=xAknck7l" alt="Sajeev John"> </div> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span>Christopher.Sorensen</span></span> <span class="field field--name-created field--type-created field--label-hidden"><time datetime="2021-11-17T10:36:54-05:00" title="Wednesday, November 17, 2021 - 10:36" class="datetime">Wed, 11/17/2021 - 10:36</time> </span> <div class="clearfix text-formatted field field--name-field-cutline-long field--type-text-long field--label-above"> <div class="field__label">Cutline</div> <div class="field__item"><p>Physicist Sajeev John received the award for his groundbreaking research and fundamental advancements in confining and harnessing the flow of photons of light in a manner analogous to harnessing the flow of electrons (photo by Sylvie Li/Shoot Studio)</p> </div> </div> <div class="field field--name-field-author-reporters field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/authors-reporters/chris-sasaki" hreflang="en">Chris Sasaki</a></div> </div> <div class="field field--name-field-topic field--type-entity-reference field--label-above"> <div class="field__label">Topic</div> <div class="field__item"><a href="/news/topics/our-community" hreflang="en">Our Community</a></div> </div> <div class="field field--name-field-story-tags field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/tags/gerhard-herzberg-canada-gold-medal" hreflang="en">Gerhard Herzberg Canada Gold Medal</a></div> <div class="field__item"><a href="/news/tags/awards" hreflang="en">Awards</a></div> <div class="field__item"><a href="/news/tags/faculty-arts-science" hreflang="en">Faculty of Arts &amp; Science</a></div> <div class="field__item"><a href="/news/tags/nserc" hreflang="en">NSERC</a></div> <div class="field__item"><a href="/news/tags/physics" hreflang="en">Physics</a></div> <div class="field__item"><a href="/news/tags/rersearch-innovation" hreflang="en">Rersearch &amp; Innovation</a></div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>Theoretical physicist&nbsp;<strong>Sajeev John</strong>&nbsp;has received Canada鈥檚 highest science and engineering honour, the prestigious Gerhard Herzberg Canada Gold Medal.</p> <p>John&nbsp;is receiving the award for his groundbreaking research and fundamental advancements in confining and harnessing the flow of photons of light in a manner analogous to harnessing the flow of electrons.</p> <p>The medal also recognizes John for his leadership in efforts to transform this research into groundbreaking applications in optical micro-chips, optical communications and information processing, laser technologies, solar-energy harvesting and clinical medicine 鈥 including life-saving surgical tools and techniques.</p> <p>鈥淚 am profoundly honoured and feel singularly energized to bring to broader fruition the work I began on light-trapping crystals,鈥&nbsp;says John,&nbsp;<a href="https://www.provost.utoronto.ca/awards-funding/university-professors/">a University Professor</a>&nbsp;in the Faculty of Arts &amp; Science's&nbsp;<a href="https://www.physics.utoronto.ca/" target="_blank">department of physics</a>.</p> <p>鈥淭he Herzberg Gold Medal offers a unique opportunity for creativity and unfettered pursuit of essential applications such as the world鈥檚 most efficient, lightweight silicon solar cells; light-trapping to enhance artificial photosynthesis for solar fuel production; development of the most compact lab-in-a-photonic-crystal sensors for early-stage disease detection and diagnosis; and much more.鈥</p> <p>Named after the Canadian physicist and Nobel laureate in chemistry, the&nbsp;<a href="https://www.nserc-crsng.gc.ca/Prizes-Prix/Herzberg-Herzberg/About-Apropos_eng.asp" target="_blank">Gerhard Herzberg Canada Gold Medal</a>&nbsp;recognizes the excellence and impact of a recipient鈥檚 research. It is awarded annually by the Natural Sciences and Engineering Research Council of Canada (NSERC).</p> <p>鈥淧rofessor John is truly deserving of the country鈥檚 highest scientific honour,鈥&nbsp;says&nbsp;<strong>Melanie Woodin</strong>, dean of the Faculty of Arts &amp; Science. 鈥淣ot only has his work been foundational, it has also had an impact in physics, chemistry, engineering and medicine, and is leading to advancements that are benefiting people鈥檚 lives.鈥</p> <p>John's research provides a solution to the problem that photons do not tend to flow along confined pathways like electrons but instead disperse or are absorbed.</p> <p>According to&nbsp;<strong>Kim Strong</strong>, chair of the department of physics, 鈥淧rofessor John鈥檚 research laid out the theoretical foundation for special materials 鈥 called Photonic Band Gap (PBG) materials 鈥 that allow confinement, or localization, of photons to a microscopic region with the size of the wavelength of light.鈥</p> <p>鈥淥nce you know how to confine photons to a single location,鈥&nbsp;she says, 鈥測ou can confine their motion along prescribed microscopic circuit paths, analogous to the way the motion of electrons is controlled on the nanometer scale in semiconductors.鈥</p> <p>Following up on his theoretical work, John and his collaborators built the first large-scale silicon PBG material out of a synthetic opal and have created PBG materials that are even easier and cheaper to manufacture.</p> <p>The groundbreaking work has sparked the development of novel micro-structured materials known as photonic crystals, now referred to as 鈥渟emiconductors of light.鈥&nbsp;Ultimately, the breakthrough will enable computer chips to operate with photons instead of electrons.</p> <p>Among many impacts beyond the lab, research into PBG materials has already produced life-saving advancements in clinical medicine. In 2004, laser surgery was performed on a patient to remove a previously treated tumour that&nbsp;was recurring and remained life-threatening. A final, successful surgery was carried out using a hollow-core photonic band gap fibre. Thousands of similar procedures have been performed using PBG fibres and several major medical centres are now testing PBG-fibre-based laser surgery tools.</p> <p>"The University of Toronto congratulates Sajeev John on鈥痶his important recognition,鈥 says Professor鈥<strong>Leah Cowen</strong>, 老司机直播鈥檚 associate vice-president of research. 鈥淔rom his groundbreaking work on confining and harnessing the flow of photons to his leadership in exploring applications for his research in optical micro-chips, optical communications and information processing, laser technologies, solar energy-harvesting and clinical medicine 鈥 his impact has been remarkable.鈥&nbsp;</p> <p>In 1984, John received his PhD in physics from Harvard University, where he published the original paper on light localization. He was an assistant professor at Princeton University, where he pioneered the concept of photonic band gap materials. He joined 老司机直播 in 1989.</p> <p>John鈥檚 research and scientific leadership earned him the 2001 King Faisal International Prize in Science (with Nobel laureate C.N. Yang). In 2007, the Institute of Electrical and Electronics Engineers (IEEE) awarded him with the International Quantum Electronics Award for 鈥渢he invention of and development of light-trapping crystals and the elucidation of their properties and applications.鈥</p> <p>He is holder of a Canada Research Chair in&nbsp;<a href="https://www.chairs-chaires.gc.ca/chairholders-titulaires/profile-eng.aspx?profileId=646" target="_blank">optical sciences</a>&nbsp;and was named an&nbsp;<a href="https://www.gg.ca/en/honours/recipients/146-9910" target="_blank">Officer of the Order of Canada</a>&nbsp;in 2017.</p> </div> <div class="field field--name-field-news-home-page-banner field--type-boolean field--label-above"> <div class="field__label">News home page banner</div> <div class="field__item">Off</div> </div> Wed, 17 Nov 2021 15:36:54 +0000 Christopher.Sorensen 301290 at TikTok teaching? 老司机直播 researchers study the social media platform's use in academia /news/tiktok-teaching-u-t-researchers-study-social-media-platform-s-use-academia <span class="field field--name-title field--type-string field--label-hidden">TikTok teaching? 老司机直播 researchers study the social media platform's use in academia</span> <div class="field field--name-field-featured-picture field--type-image field--label-hidden field__item"> <img loading="eager" srcset="/sites/default/files/styles/news_banner_370/public/2023-04/Academic-TikTok-Web-Promo-Image%203-crop.jpeg?h=afdc3185&amp;itok=IZ8yW3WO 370w, /sites/default/files/styles/news_banner_740/public/2023-04/Academic-TikTok-Web-Promo-Image%203-crop.jpeg?h=afdc3185&amp;itok=W29NVmDF 740w, /sites/default/files/styles/news_banner_1110/public/2023-04/Academic-TikTok-Web-Promo-Image%203-crop.jpeg?h=afdc3185&amp;itok=j6w74YhE 1110w" sizes="(min-width:1200px) 1110px, (max-width: 1199px) 80vw, (max-width: 767px) 90vw, (max-width: 575px) 95vw" width="740" height="494" src="/sites/default/files/styles/news_banner_370/public/2023-04/Academic-TikTok-Web-Promo-Image%203-crop.jpeg?h=afdc3185&amp;itok=IZ8yW3WO" alt="An academic TikTok"> </div> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span>Christopher.Sorensen</span></span> <span class="field field--name-created field--type-created field--label-hidden"><time datetime="2021-11-16T11:42:21-05:00" title="Tuesday, November 16, 2021 - 11:42" class="datetime">Tue, 11/16/2021 - 11:42</time> </span> <div class="clearfix text-formatted field field--name-field-cutline-long field--type-text-long field--label-above"> <div class="field__label">Cutline</div> <div class="field__item"><p>(Image courtesy of KMDI)</p> </div> </div> <div class="field field--name-field-topic field--type-entity-reference field--label-above"> <div class="field__label">Topic</div> <div class="field__item"><a href="/news/topics/our-community" hreflang="en">Our Community</a></div> </div> <div class="field field--name-field-story-tags field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/tags/faculty-information" hreflang="en">Faculty of Information</a></div> <div class="field__item"><a href="/news/tags/graduate-students" hreflang="en">Graduate Students</a></div> <div class="field__item"><a href="/news/tags/rersearch-innovation" hreflang="en">Rersearch &amp; Innovation</a></div> <div class="field__item"><a href="/news/tags/social-media" hreflang="en">Social Media</a></div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>In a bid to shine a spotlight on their research and make&nbsp;it more accessible, academics&nbsp;around the world are following in the footsteps of their students and taking to TikTok to share videos.&nbsp;</p> <p>The trend is being highlighted&nbsp;by a team of researchers at the Knowledge Media Design Institute (KMDI) at the University of Toronto鈥檚 Faculty of Information. The researchers looked at the different ways academics, educators and scholarly communities are using TikTok, the popular social media platform that specializes in short-form user-generated videos, to share knowledge 鈥&nbsp;from&nbsp;<a href="https://www.tiktok.com/@evan.hart/video/6943622208958844166?is_copy_url=1&amp;is_from_webapp=v1">Gothic architecture explainers</a>&nbsp;to&nbsp;<a href="https://www.tiktok.com/@cambridgeuniversity/video/6973693178331385094">weight loss tips</a>.</p> <p>In particular, the researchers examined user behaviour, concerns about youth engagement, data and privacy implications, the technical features of the app&nbsp;and the visual aspect of scholarly contribution.</p> <p>鈥淚f watching YouTube is like sitting in a lecture, then using TikTok is like having a conversation,鈥 says study co-lead&nbsp;<strong>JP King</strong>, a sessional&nbsp;instructor at the John H. Daniels Faculty of Architecture, Landscape, and Design&nbsp;who works as KMDI鈥檚 data visualization and graphic designer. 鈥淭ikTok provides a fun place to create new forms of accessible learning shared outside of classrooms, textbooks, and conference halls.</p> <p>Led by King and Associate Professor&nbsp;<strong>Sara Grimes</strong>, director of KMDI,<i>&nbsp;</i>four graduate students with an interest in critical media literacy reviewed TikTok videos made by academics for the study. The team also analyzed more than 100 journal articles, books&nbsp;and research papers focused on TikTok, social media, technology&nbsp;and digital rights. Their study recommends some best practices for academics using TikTok, which ranks as the fourth most popular social media platform after YouTube, Snapchat and Instagram (<a href="/node/171341#best%20practices">see below</a>).</p> <p>&nbsp;</p> <blockquote cite="https://www.tiktok.com/@evan.hart/video/6943622208958844166" data-video-id="6943622208958844166" height id="v41061978360864740" width><iframe name="__tt_embed__v41061978360864740" sandbox="allow-popups allow-popups-to-escape-sandbox allow-scripts allow-top-navigation allow-same-origin" src="https://www.tiktok.com/embed/v2/6943622208958844166?lang=en-US&amp;referrer=https%3A%2F%2Fproxy.www.utoronto.ca%3A2053%2Fnode%2F171341"></iframe></blockquote> <p>&nbsp;</p> <p>The researchers found that TikTok videos often tend to be 鈥渁mateurish鈥 and offer a peek behind the scenes. The estimated 20 million-plus daily users, who are mostly under 30, embrace a less professional approach and don't feel the need to make everything perfect.&nbsp;They may simply record themselves with their smartphones with no special lighting or makeup. While this might feel out of place on Instagram or YouTube, it is acceptable if not expected on TikTok.</p> <p>TikTok is also unique in how it encourages active engagement. Users can remix one another鈥檚 videos or produce creative responses towards others鈥 content. At the same time, however, users risk having their video or audio remixed or repurposed without their permission if they don鈥檛 adjust their privacy settings accordingly.&nbsp;</p> <p>鈥淵ou might make a sincere video explaining your research that someone else turns into a song or a joke,鈥 the study warns academics. 鈥淒ecide now if you鈥檙e comfortable with that possibility.鈥</p> <p>The study鈥檚 authors attributed the phenomenon&nbsp;at least partly to a generational shift around intellectual property. Without bibliographies or citations, TikTok videos can challenge the sense of ownership that academic communities have traditionally had&nbsp;around ideas. 鈥淚t鈥檚 more difficult to maintain ownership of your ideas online, and you can鈥檛 control how people will use your imagery or audio. Researchers must be aware of this fact, and be thoughtful when they are publishing content,鈥&nbsp;King says.</p> <p>The researcher say that academics also need to understand the large impact that a single video could have on their personal brand. If their personal views clash with institutional values, there could be pushback from the academic community and repercussions from administrators. Even though tenured faculty members have academic freedom, they may not&nbsp;get a free pass if they use TikTok in ways their colleagues consider out of line, the researchers warn.</p> <p>&nbsp;</p> <blockquote cite="https://www.tiktok.com/@professorcasey/video/7030191966650486021" data-video-id="7030191966650486021" height id="v50731318614462650" width><iframe name="__tt_embed__v50731318614462650" sandbox="allow-popups allow-popups-to-escape-sandbox allow-scripts allow-top-navigation allow-same-origin" src="https://www.tiktok.com/embed/v2/7030191966650486021?lang=en-US&amp;referrer=https%3A%2F%2Fproxy.www.utoronto.ca%3A2053%2Fnode%2F171341"></iframe></blockquote> <p>&nbsp;</p> <p>What鈥檚 more, an outsized social media profile won鈥檛 necessarily enhance a scholar鈥檚 professional status. 鈥淚n simple terms, a million followers won't guarantee you tenure or a promotion,鈥 says King.</p> <p>Above all, it鈥檚 a way to spread the word, possibly&nbsp;dispelling popular myths with facts&nbsp;and encouraging&nbsp;an audience to think about a topic from a different perspective.&nbsp;Casey Fiesler, an assistant professor at the University of Colorado Boulder, runs&nbsp;<a href="https://www.tiktok.com/@professorcasey?lang=en">a popular TikTok account</a>&nbsp;that often challenges viewers to consider the problems with Facebook鈥檚 domination of the online experience. It鈥檚 possible to imagine a teenager finding one of Fiesler鈥檚 videos tucked between dance trends and dog tricks and questioning Facebook for the first time, according to King.</p> <p>鈥淭ikTok offers enormous potential for the discovery of critical ideas,鈥 he says. 鈥淭his is why using TikTok effectively is crucial. Sharing research with an audience outside of the academy brings together people with diverse educational backgrounds. TikTok offers an exciting new way to find like-minded thinkers, makes research accessible, and start important conversations.鈥&nbsp;<a id="best practices" name="best practices"></a></p> <p>&nbsp;Here are a few of the study鈥檚 recommendations for best practices on how scholarly communities can engage:</p> <ul> <li><b>Keep your videos short and simple:&nbsp;</b><em>L</em><i>ess than one minute is ideal because online attention spans are shorter than in-person ones</i></li> <li><b>Use storytelling and humour to make your content more accessible:&nbsp;</b><i>You are competing with all the other content online, so lighten the mood by telling a story or adding unique humour</i></li> <li><b>Find ways to engage people instead of speaking to them</b>:&nbsp;<i>Invite users to try out an experiment for themselves and create a video reply with their results</i></li> <li><b>Get your data from TikTok so you know what鈥檚 being tracked. Remember social media lives forever:&nbsp;</b><i>You might be surprised by how well TikTok knows you. Download your data and decide for yourself if you are comfortable with TikTok having this information and selling it without your knowledge</i></li> <li><b>Be aware that your video or audio may be remixed&nbsp;or repurposed without your permission, unless you change your privacy settings:&nbsp;</b><i>You might make a sincere video explaining your research that someone else turns into a song or a joke. Decide now if you鈥檙e comfortable with that possibility</i></li> </ul> </div> <div class="field field--name-field-news-home-page-banner field--type-boolean field--label-above"> <div class="field__label">News home page banner</div> <div class="field__item">Off</div> </div> Tue, 16 Nov 2021 16:42:21 +0000 Christopher.Sorensen 301298 at