Harnessing Light for 3D Printing with Upconversion

IEEE SFBA Nanotechnology Council Chapter

Tracy H. Schloemer
Arnold O. Beckman Postdoctoral Fellow
Congreve Lab
Stanford University

EAG Laboratories

San Francisco Bay Area IEEE Nanotechnology Council2020, 2017 &amp; 2014 Nanotechnology Council Outstanding Chapter (world-wide)2019, 2016 &amp; 2014 IEEE Outstanding Chapter (Western USA)2019, 2016 IEEE Outstanding Chapter (Santa Clara Valley)<a href="http://sites.ieee.org/sfbanano" title="http://sites.ieee.org/sfbanano" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">http://sites.ieee.org/sfbanano</a> <h1>Harnessing Light for 3D Printing with Upconversion</h1> <h1>Tracy H. Schloemer</h1><h3>Arnold O. Beckman Postdoctoral Fellow</h3><h3>Department of Electrical Engineering</h3><h3>Stanford University</h3><h3> </h3><h3> </h3><h3>In-Person Meeting</h3>Thursday, June 1`9, 202511:30 AM: Networking, Pizza &amp; DrinksNoon -- 1 pm: Seminar--------Please register on Eventbrite before 9:30 AM on Thursday, June 19, 2025Walk-In attendance is welcomed but discouraged (cash or check; no credit cards)Please assist us in our event planning!If you decide not to attend... - please cancel reservations by 8:00 AM on Thursday, ** Tickets cancelled by 8 AM on June 19 will have payments refunded*** Note: Eventbrite Fees will not be refunded Location:<h3>EAG Laboratories</h3>810 Kifer Road, Sunnyvale==&gt; Use corner entrance: Kifer Road / San Lucar Court==&gt; Do not enter at main entrance on Kifer Road(Parking: on street or in parking lot behind EAG)

<h3>Abstract:</h3> <h3>Precision manufacturing at the nanoscale faces a fundamental energy bottleneck: achieving the resolution needed for next-generation devices requires laser powers so high they severely limit throughput and scalability.</h3> <h3>In this talk, I will present a breakthrough solution developed at Harvard and Stanford using triplet-triplet annihilation upconversion, a process where two low-energy photons create one high-energy photon. By encapsulating specialized light-converting molecules in protective silica shells, we can trigger photopolymerization deep within printing resins using laser powers orders of magnitude lower than existing methods. This approach not only dramatically reduces energy requirements but also enables flexible printing strategies, from single-point precision to parallel processing, which opens new possibilities for scalable nanomanufacturing</h3> <h3>Read More:</h3> <h3>Technical review article: <a href="https://pubs.acs.org/doi/abs/10.1021/acsnano.3c00543" title="https://pubs.acs.org/doi/abs/10.1021/acsnano.3c00543" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">https://pubs.acs.org/doi/abs/10.1021/acsnano.3c00543</a></h3><h3>Research article: <a href="https://www.nature.com/articles/s41586-022-04485-8" title="https://www.nature.com/articles/s41586-022-04485-8" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">https://www.nature.com/articles/s41586-022-04485-8</a> </h3><h3>IEEE Spectrum article: <a href="https://ieeexplore.ieee.org/abstract/document/10271352" title="https://ieeexplore.ieee.org/abstract/document/10271352" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">https://ieeexplore.ieee.org/abstract/document/10271352</a></h3>

<h3>Speaker Bio:</h3> <h1>Tracy Schloemer</h1><h3>Arnold O. Beckman Postdoctoral Fellow</h3><h3>Department of Electrical Engineering</h3><h3>Congreve Lab</h3><h3>Stanford University</h3> <h3>Tracy H. Schloemer is currently an Arnold O. Beckman Postdoctoral Fellow at Stanford University in the Department of Electrical Engineering, advised by Prof. Dan Congreve.</h3> <h3>She earned her B.S. in Chemistry and M.A. in Educational Studies from the University of Michigan in Ann Arbor. Afterwards, she taught high school chemistry in Denver, Colorado, focusing on active learning pedagogies like project-based learning so her students could “do science, not just learn about science.”</h3> <h3>She was so effective at persuading her students to pursue STEM careers that she accidentally convinced herself to do the same. She later earned her Ph.D. in Applied Chemistry from the Colorado School of Mines in 2019, where she focused on organic semiconductor design for improved operational durability of perovskite solar cells under Prof. Alan Sellinger and in collaboration with the National Renewable Energy Lab.</h3> <h3>Her research has been published in numerous interdisciplinary journals and featured in prominent media outlets, such as the BBC Podcast “The Naked Scientist.” Her work has also been recognized through several awards, including a fellowship from the Knowles Teaching Initiative, selection for the CAS Future Leaders Program from the American Chemical Society (ACS), a fellowship from the Arnold O. Beckman Foundation, and the ACS Polymeric Materials: Science and Engineering (PMSE) 2024 Future Faculty Award</h3> <h3>Her interests outside the lab include hiking and cheering on all University of Michigan “sportsball” teams.</h3>

If you have questions or problems with your registration, please contact <a href="https://www.eventbrite.com/e/thermal-analysis-for-thermal-challenges-with-heterogeneous-packaging-tickets-1249737030099?aff=oddtdtcreator" title="https://www.eventbrite.com/e/thermal-analysis-for-thermal-challenges-with-heterogeneous-packaging-tickets-1249737030099?aff=oddtdtcreator">LincolnBourne@gmail.com</a>* Please help us manage our event planning. When we have many walk-in attendees, it is difficult for us to order the proper amount of food for lunch.** Tickets cancelled by 8 AM on June 19 will have payments refunded*** Note: Eventbrite Fees will not be refunded

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Harnessing Light for 3D Printing with Upconversion

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