Development of NLO materials, Nanoparticle nonlinear optics, Theoretical understanding of nonlinear optical process and supramolecular hydrogen bonding, Biosensors based on calorimetric and laser spectroscopic techniques, Synthesis and Characterization of CVD nano Diamond, Molecular level understanding of CVD process, Investigation of photo-dissociation dynamics of molecules relevant to atmospheric chemistry, Alternative energy source based on plasma technology, plasma spectroscopy.