87 citations · 156 across the 12 of their papers we have counts for
13 papers
Role of polarized tip-enhanced Raman spectroscopy in the enhancement of interface optical phonon modes in AlGaN multi-quantum wells
A. K. Sivadasan, Prajit Dhara, Chirantan Singha +5
Group III nitride based two-dimensional multi-quantum well (MQW) nanostructures find remarkable applications in the visible to ultraviolet light sources. The interface optical (IFO…
Spectroscopically forbidden infra-red emission in Au-vertical graphene hybrid nanostructures
A. K. Sivadasan, Santanu Parida, Subrata Ghosh +2
Implementation of Au nanoparticles (NPs) is a subject for frontier plasmonic research due to its fascinating optical properties. Herein, the present study deals with plasmonic assi…
Optical imaging of metallic and semiconductor nanostructures at sub wavelength regime
A. K. Sivadasan, Kishore K. Madapu, Prajit Dhara
The near field scanning optical microscopy (NSOM) is not only a tool for imaging of objects in the sub wavelength limit but also a prominent characteristic tool for understanding t…
Interface Phonon Modes in the [AlN/GaN]20 and [Al0.35Ga0.65N/Al0.55Ga0.45N]20 2D Multi Quantum Well Structures
A. K. Sivadasan, Chirantan Singha, A. Bhattacharyya +1
Interface phonon (IF) modes of c-plane oriented [AlN/GaN]20 and Al0.35Ga0.65N/Al0.55Ga0.45N]20 multi quantum well (MQW) structures grown via plasma assisted molecular beam epitaxy…
Optical properties of AlGaN nanowires synthesized via ion beam techniques
Santanu Parida, P. Magudapathy, A. K. Sivadasan +2
AlGaN plays a vital role in hetero-structure high electron mobility transistor by employing a two-dimensional electron gas and as electron blocking layer in the multi quantum well…
Effect of Scattering Efficiency in the Tip Enhanced Raman Spectroscopic Imaging of Nanostructures in the Sub Diffraction Limit
A. K. Sivadasan, Avinash Patsha, Achyut Maity +2
The experimental limitations in the signal enhancement and spatial resolution in spectroscopic imaging have been always a challenging task in the application of near-field spectros…