Prabhat Kumar

Academy of Sciences of the Czech Republic Czech Republic

Dr. Prabhat Kumar is a researcher in experimental material science with a specialization in transition metal oxides and dichalcogenides. He was awarded a Ph.D. in Physics from the Indian Institute of Technology Delhi, in 2019. He has an MTech in Nanotechnology and a BTech in Electronics and Communication Engineering. Dr. Kumar has experience in thin-film characterizations by X-ray photoelectron spectroscopy, electron microscopy, and thin films based terahertz modulators. He is currently working at the Institute of Physics of the Czech Academy of Sciences on atomic layer deposition technique for ultra-thin films of oxides and nitrides. He also has experience in energy storage and biomedical sensor applications of 3D graphene.

1chapters authored

Chapters authored

Surface-Enhanced Raman Scattering: Introduction and Applications

By Samir Kumar, Prabhat Kumar, Anamika Das and Chandra Shakher Pathak

Scattering of light by molecules can be elastic, Rayleigh scattering, or inelastic, Raman scattering. In the elastic scattering, the photon’s energy and the state of the molecule after the scattering events are unchanged. Hence, Rayleigh scattered light does not contain much information on the structure of molecular states. In inelastic scattering, the frequency of monochromatic light changes upon interaction with the vibrational states, or modes, of a molecule. With the advancement in the laser sources, better and compact spectrometers, detectors, and optics Raman spectroscopy have developed as a highly sensitive technique to probe structural details of a complex molecular structure. However, the low scattering cross section (10−31) of Raman scattering has limited the applications of the conventional Raman spectroscopy. With the discovery of surface-enhanced Raman scattering (SERS) in 1973 by Martin Fleischmann, the interest of the research community in Raman spectroscopy as an analytical method has been revived. This chapter aims to familiarize the readers with the basics of Raman scattering phenomenon and SERS. This chapter will also discuss the latest developments in the SERS and its applications in various fields.

Part of the book: Recent Advances in Nanophotonics

Prabhat Kumar

Chapters authored

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Samir Kumar

Arash Ahmadi

Anamika Das

Anand Bhatia

Sukeun Eom

Min-woo Kong

Kwang-seok Seo

Andreas Fognini

Michael E. Reimer

Thamer A. Tabbakh