T
Tapashree Roy
Researcher at University of Southampton
Publications - 30
Citations - 1441
Tapashree Roy is an academic researcher from University of Southampton. The author has contributed to research in topics: Lens (optics) & Metamaterial. The author has an hindex of 12, co-authored 30 publications receiving 1234 citations. Previous affiliations of Tapashree Roy include Argonne National Laboratory & Harvard University.
Papers
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Journal ArticleDOI
A super-oscillatory lens optical microscope for subwavelength imaging
Edward T. F. Rogers,Jari Lindberg,Tapashree Roy,Salvatore Savo,John E. Chad,Mark R. Dennis,Nikolay I. Zheludev +6 more
TL;DR: A new super-resolution microscope for optical imaging that beats the diffraction limit of conventional instruments and the recently demonstrated near-field optical superlens and hyperlens is reported.
Journal ArticleDOI
Super-oscillatory optical needle
Edward T. F. Rogers,Salvatore Savo,Jari Lindberg,Tapashree Roy,Mark R. Dennis,Nikolay I. Zheludev,Nikolay I. Zheludev +6 more
TL;DR: In this paper, a class of super-oscillatory lenses that form extended subwavelength optical needles on a 15λ field of view were used for super-resolution imaging.
Journal ArticleDOI
Dynamic metasurface lens based on MEMS technology
Tapashree Roy,Tapashree Roy,Shuyan Zhang,Il Woong Jung,Mariano Troccoli,Federico Capasso,Daniel Lopez +6 more
TL;DR: In this article, a monolithic Micro-Electro-Mechanical System (MEMS) integrated with a metasurface-based flat lens that focuses light in the mid-infrared spectrum is demonstrated.
Journal ArticleDOI
Planar super-oscillatory lens for sub-diffraction optical needles at violet wavelengths
Guanghui Yuan,Edward T. F. Rogers,Tapashree Roy,Giorgio Adamo,Zexiang Shen,Nikolay I. Zheludev +5 more
TL;DR: In this paper, the authors extended the super-oscillation concept into the vectorial-field regime to work with circularly polarized light, and experimentally demonstrated a circularly polarized optical needle with sub-diffraction transverse spot size (0.45l) and axial long depth of focus (DOF) of 15l using a planar SOL at a violet wavelength of 405 nm.
Journal ArticleDOI
Dynamic metasurface lens based on MEMS Technology
Tapashree Roy,Tapashree Roy,Shuyan Zhang,Il Woong Jung,Mariano Troccoli,Federico Capasso,Daniel Lopez +6 more
TL;DR: In this paper, a monolithic Micro-Electro-Mechanical System (MEMS) is integrated with a metasurface-based flat lens that focuses light in the mid-infrared spectrum.