Home

"A teacher can never truly teach unless he is still learning himself. A lamp can never light another lamp unless it continues to burn its own flame. The teacher who has come to the end of this subject, who has no living traffic with his knowledge but merely repeats his lessons to his students, can only load their minds; he can not quicken them." - Rabindranath Tagore

"If you couldn't reduce a subject to the freshman level, means that you don't really understand the subject."

"The wonderful thing about science is that it's alive." - Richard P. Feynman

The journey started from Raipur Netaji Sishu Siksha Niketan to Visva Bharati, Santiniketan via to Bolpur High School. After graduation from Visva Bharati, Santiniketan, S. N. Bose National Centre for Basic Sciences is destined as a student of Integrated Ph.D. for Chemical Sciences (PBIRCS-05). The course was jointly conducted by S. N. Bose National Centre for Basic Sciences and Indian Association for the cultivation of science.

Ph.D. was continued and completed from Indian Association for the cultivation of science in 2013. The focus was to understand the dynamics of particles in presence of spin bath, theoretically. The dynamics are calculated from system-bath interaction Hamiltonian using standard methods. The model is very different from Jaynes-Cummings model where the system is considered as two-level atomic systems and bath is harmonic. Experimentally this is a great challenge in several aspects.

While working as a post-doctoral research fellow at Jackson State University, the focus was to concentrate on the synthesis of spatially confined systems to achieve energy restriction, like as two-level bath. However, the immediate effects were to find applications of such synthesized materials for selective and sensitive detection of biological systems, e.g. cancer cells, multidrug resistance bacteria, viruses, and environmentally hazardous ions, e.g. As³⁺. Several nonlinear tools e.g. Hyper-Rayleigh Scattering, Raman Spectroscopy, are used as characterization.

The effects and control of quantum confinement are further continued at Tel Aviv University, where the focus was to study the ultrafast dynamics of thermal electrons and near-field effect of plasmonics. "Hot electrons" are considered goes under several processes before thermalized to lattice/bulk. Each of these events occurs in different time scale. With the "home build setup", it is possible to capture each dynamics separately. Another aspect of this study is the non-contact imaging of materials in the extended field of super-resolution microscopy.

The future aspects of all these studies to understand the linear and nonlinear dynamics of systems in presence of energetically quantized heat bath and the controlled applications in renewable energy resources, environmental cleaning, and bio-imaging for selective and sensitive detection.