Person
Debdatta Ray
This person is no longer with EPFL
Related publications (6)
A Low-Temperature Annealing Method for Alloy Nanostructures and Metasurfaces: Unlocking a Novel Degree of Freedom
Olivier Martin, Christian Santschi, Debdatta Ray, Hsiang-Chu Wang, Jeonghyeon Kim
The material and exact shape of a nanostructure determine its optical response, which is especially strong for plasmonic metals. Unfortunately, only a few plasmonic metals are available, which limits the spectral range where these strong optical effects ca ...
WILEY-V C H VERLAG GMBH2022Fabrication and applications of AuAg alloy metasurfaces and hybrid metal dielectric nanoantennas
The most prevalent materials used in the field of plasmonics are Au and Ag. However, for the past few years, the plasmonic community has also been looking for alternative materials that have lower losses than Au and higher stability than Ag. This thesis is ...
EPFL2021Multipolar scattering analysis of hybrid metal-dielectric nanostructures
Olivier Martin, Andrei Kiselev, Debdatta Ray
We perform a systematic study showing the evolution of the multipoles along with the spectra for a hybrid metal-dielectric nanoantenna, a Si cylinder and an Ag disk stacked one on top of another, as its dimensions are varied one by one. We broaden our anal ...
OPTICAL SOC AMER2021Hybrid Metal-Dielectric Metasurfaces for Refractive Index Sensing
Olivier Martin, Hatice Altug, Christian Santschi, Debdatta Ray, Dordaneh Etezadi
Hybrid metal-dielectric nanostructures have recently gained prominence because they combine strong field enhancement of plasmonic metals and the several low-loss radiation channels of dielectric resonators, which are qualities pertaining to the best of bot ...
AMER CHEMICAL SOC2020Fabrication of alloyed plasmonic nanostructures
Olivier Martin, Debdatta Ray, Ji Zhou, Haohua Li
We have fabricated homogeneous thin films of an alloy of Au and Ag, by annealing two consecutive deposited layers of Au and Ag. We have also successfully fabricated nanodisks and nanorods made of AuAg alloys by annealing the nanostructures at 300 degrees C ...
IEEE2018Hybrid Metallodielectric Metasurfaces for Sensing
Olivier Martin, Christian Santschi, Debdatta Ray
We have fabricated metasurfaces that combine silicon resonators with aluminium disks. While the latter produce strong near-field enhancement, the former support optical resonances that can be used to obtain well-controlled far-field signatures. ...
IEEE2018