Chemistry Department Seminar: Core-Shell Plasmonic Nanoparticle Lattices


9:30 AM - 11:00 AM

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Plasmonic nanostructures can squeeze light into subwavelength volumes with enhanced local electromagnetic fields important for light-matter interactions in photochemistry, biosensing, and nonlinear physics. Compared to dielectric resonators that confine optical fields within their high-refractive-index materials, plasmonic nanostructures squeeze light into nanoscale volumes at their metal-dielectric interfaces. Structural design at the plasmonic nanoparticle surface, which can lead to unparalleled scientific and technological advances, is not readily feasible through conventional processing and metrology techniques. This seminar will highlight how the design and fabrication of core-shell plasmonic nanoparticle lattices can result in fundamental insights and novel applications in plasmonic and photonic devices, including: (1) annealing treatment of plasmonic nanoparticle lattices for ultranarrow resonances, (2) interictal engineering of nanoparticle lattices for nanolasing, and (3) plasmonic photoelectrocatalysis in copper–platinum core-shell nanoparticle lattices.


Dr Shikai Deng is an associate professor and a group leader in the 2020 X-Lab at the Shanghai Institute of Microsystem and Information Technology (SIMIT), CAS. He received his Ph.D. in Chemical Engineering with Professor Vikas Berry at the University of Illinois Chicago in 2017. Before graduating, he also worked as a full-time research assistant at Argonne National Laboratory with an Argonne Graduate Fellowship in 2017. From 2018 to 2021, he worked with Professor Teri W. Odom at Northwestern University as a Postdoctoral Fellow (Cottrell Fellowship). In July 2021, he joined the 2020 X-Lab at SIMIT as a Principal Investigator. His research interest is designing multiscale metamaterials with unprecedented properties based on nanostructured surfaces and plasmonic nanoparticle lattices.

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