Dr. Samir Kumar is a physicist with expertise in the development and study of sculptured thin films and interfaces. He has extensive research experience in the development of novel nanostructures for plasmonics and surface-enhanced Raman spectroscopy for photocatalysis, water repellent surfaces, and bio/chemical sensing. He received his Ph.D. in physics from Indian Institute of Technology Delhi (IITD) in 2017, and he is currently working as a postdoctoral researcher at Kyoto University. He is working on the development and study of plasmonic silver nanostructures grown by glancing angle deposition (GLAD) technique for chemical and biosensing using surface-enhanced spectroscopy (SES). The surface-enhanced Raman spectroscopy (SERS) substrates grown by GLAD are already known for their reproducibility and SERS enhancement. In his research, he has developed various methods to further improve the sensitivity and performance of these substrates. Dr. Kumar has also developed novel elastic tunable SERS substrate for the onsite, rapid, sensitive pathogen identiﬁcation, chemical sensing and trace detection of pesticides. Finally, he developed a highly sensitive, reproducible, and reusable Ag nanoparticle decorated TiO2 SERS substrate.