Publications de Raziman Thottungal Valapu

Hybrid Metal-Dielectric Metasurfaces for Refractive Index Sensing

Christian Santschi, Olivier Martin, Raziman Thottungal Valapu, Hatice Altug, Dordaneh Etezadi, Debdatta Ray

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 SOC2020

Extending limits of plasmonics with unconventional metasurfaces

Olivier Martin, Raziman Thottungal Valapu, Madasamy Thangamuthu, Debdatta Ray, Jeonghyeon Kim, Hsiang-Chu Wang

2020

Ag-dressed carbon nanotubes - understanding the Raman enhancement mechanisms inside and out

Olivier Martin, Raziman Thottungal Valapu

2018

Optical second harmonic generation from nanostructured graphene: a full wave approach

Olivier Martin, Gabriel David Bernasconi, Raziman Thottungal Valapu, Jérémy Butet, Bruno Majérus

Optical second harmonic generation (SHG) from nanostructured graphene has been studied in the framework of classical electromagnetism using a surface integral equation method. Single disks and dimers are considered, demonstrating that the nonlinear convers ...

2017

Modelling of plasmonic systems : advanced numerical methods and applications

Raziman Thottungal Valapu

Metallic nanostructures interact in complex ways with light, forming the subject of plasmonics and bringing novel physical phenomena and practical applications. The fundamental and practical importance of plasmonics necessitates the development of a multit ...

EPFL2016

Accuracy of surface integral equation matrix elements in plasmonic calculations

Olivier Martin, Raziman Thottungal Valapu, Eric Claude Le Ru

We study the convergence of the integrals required to be evaluated in the surface integral equation (SIE) formulation (or method of moments) for simulating the optical response of plasmonic nanostructures. We analyze how the numerical quadratures used to c ...

Optical Soc Amer2015

Optical forces in nanoplasmonic systems: how do they work, what can they be useful for?

Olivier Martin, Raziman Thottungal Valapu, Robert Julius Wolke

n this article, we share our vision for a future nanofactory, where plasmonic trapping is used to control the different manufacturing steps associated with the transformation of initial nanostructures to produce complex compounds. All the different functio ...

Royal Soc Chemistry2015

Raziman Thottungal Valapu

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