3 papers
physics.optics2026
Topology-optimized distributed 3d anisotropic Raman emission
Ian M. Hammond, Pengning Chao, Henry O. Everitt +4
Topology optimization (TO) of 3D surface-enhanced Raman scattering (SERS) substrates faces challenges in managing field singularities and modeling orientation-averaged anisotropic…
physics.optics2025
Eigenvalue-accelerated LDOS optimization of high-Q optical resonances
George Shaker, Beñat Martinez de Aguirre Jokisch, Pengning Chao +1
We demonstrate a new method that yields orders-of-magnitude acceleration in inverse design (e.g. topology optimization) of high- resonant cavities to maximize the local density…
physics.optics2025
Sum-of-Squares Bounds on Surface-Enhanced Raman Scattering
Pengning Chao, Ian M. Hammond, Steven G. Johnson
Surface-enhanced Raman scattering (SERS) is a critical tool for chemical sensing and spectroscopy, and a key question is how to optimally design nanostructures for maximizing SERS.…