PHYS/ASTR Colloquium: "Nanoimprinted Scanning Probe for Enhanced Spectroscopies and Nanoimaging on 2D Excitons and Plexcitons" - Junze Zhou (Lawrence Berkeley National Lab)

San Francisco State University

Physics & Astronomy Colloquium Series

Monday, May 4, 2026

SEIC 210, 3:30 PM

Speaker: Dr. Junze Zhou (Lawrence Berkeley National Lab)

"Nanoimprinted Scanning Probe for Enhanced Spectroscopies and Nanoimaging on 2D Excitons and Plexcitons"

Optically active scanning probes simultaneously measure nanoscale topography and optical spectra with sub-diffraction spatial resolution. This capability is critical for elucidating how both intrinsic material properties and artificially engineered structures influence macroscopic functionality in low dimensional systems. In this talk, I will introduce a novel scanning probe fabricated using a cost-effective and scalable nanoimprinting approach, enabling correlated spatial, spectral, and temporal measurements in a single platform. I will then discuss how the nanoimprinted probe, together with tailored plasmonic cavities, enhances the optical response of 2D excitons in atomically thin materials, enabling probing dark excitons, strain-localized states, and the strong exciton-cavity interaction underlying plexciton formation.

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