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21 papers
Optical Synthesis of Transient Chirality in Achiral Plasmonic Metasurfaces
Andrew S. Kim, Anjan Goswami, Mohammad Taghinejad +1
As much as chiral metasurfaces are significant in stereochemistry and polarization control, tunable chiroptical response is important for their dynamic counterparts. A single metas…
Polarimetric analysis of thermal emission from both reciprocal and nonreciprocal materials using fluctuational electrodynamics
Chiyu Yang, Wenshan Cai, Zhuomin M. Zhang
Coherent thermal emission for a given polarization has been observed in many metamaterials with micro/nanostructures. A complete description of the thermal emission requires the fu…
Electrically driven programmable phase-change meta-switch reaching 80% efficiency
Sajjad Abdollahramezani, Omid Hemmatyar, Mohammad Taghinejad +11
Despite recent advances in active metaoptics, wide dynamic range combined with high-speed reconfigurable solutions is still elusive. Phase-change materials (PCMs) offer a compellin…
Fast Non-line-of-sight Imaging with Two-step Deep Remapping
Dayu Zhu, Wenshan Cai
Conventional imaging only records photons directly sent from the object to the detector, while non-line-of-sight (NLOS) imaging takes the indirect light into account. Most NLOS sol…
Dynamic hybrid metasurfaces
Sajjad Abdollahramezani, Omid Hemmatyar, Mohammad Taghinejad +10
Efficient hybrid plasmonic-photonic metasurfaces that simultaneously take advantage of the potential of both pure metallic and all-dielectric nanoantennas are identified as an emer…
Multifunctional Meta-Optic Systems: Inversely Designed with Artificial Intelligence
Dayu Zhu, Zhaocheng Liu, Lakshmi Raju +2
Flat optics foresees a new era of ultra-compact optical devices, where metasurfaces serve as the foundation. Conventional designs of metasurfaces start with a certain structure as…