30 citations · 75 across the 6 of their papers we have counts for
6 papers
pH Dependent surface enhanced Raman study of Phe + Ag Complex and DFT calculations for spectral analysis
Animesh K. Ojha, Achintya Singha, Swagata Dasgupta +2
Surface enhanced Raman spectra of Phenylalanine (Phe) in Ag colloidal solution have been recorded for Phe solutions of different pH. Spectral line-shape analyses of the enhanced mo…
Comparison of metal-amino acid interaction in Phe-Ag and Tyr-Ag complexes by spectroscopic measurements
Achintya Singha, Swagata Dasgupta, Anushree Roy
In this article, we have compared the metal-amino acid interactions in Tyr-Ag and Phe-Ag complexes through pH dependent SERS measurements. By analyzing the variation in relative in…
Quantitative Analysis of Photo-Thermal Stability of CdSe/CdS Core-Shell Nanocrystals
A. Singha, A. Roy
We report here investigations on the instability in luminescence of bare (TOPO-stabilized) and CdS- capped CdSe particles under infrared radiation. During photo-thermal annealing t…
Raman Measurements and Stress Analysis in Gallium Ion Implanted Gallium Nitride Epitaxial Layers on Sapphire
S. Mal, A. Singha, S. Dhara +1
In this article, we estimate hydrostatic stress developed in gallium ion implanted gallium nitride epitaxial layers using Raman measurements. We have calculated deformation potenti…
Electron and Phonon Confinement and New Surface Phonon Modes in CdSe-CdS Core-Shell Nanocrystals
A. Singha, B. Satpati, P. V. Satyam +1
Optical and vibrational properties of bare and CdS shelled CdSe nanocrystalline particles are investigated. To confirm the formation of such nanocrystals in our samples we estimate…
A non-destructive analytic tool for nanostructured materials : Raman and photoluminescence spectroscopy
A. Singha, P. Dhar, Anushree Roy
Modern materials science requires efficient processing and characterization techniques for low dimensional systems. Raman spectroscopy is an important non-destructive tool, which p…