Surface Dynamics Group @ TIFR-Hyderabad
Understanding chemical reactions occurring on metal surfaces is a subject of interest because of its direct relevance for heterogeneous catalyst technology. Chemical reactions on surfaces are often very complex and involve several elementary steps such as collision of atom/molecules with the surface, energy dissipation, adsorption, diffusion and so on. Our research activities are aimed at understanding these elementary processes at atomic level detail. Following themes are the focus of our current research work:
Understanding the collision processes of atoms/molecules with surfaces in order to gain insights into energy transfer processes
Building a detailed microscopic understanding of the chemical reaction dynamics and mechanisms on metal surfaces
- Atom scattering based imaging and microscopy
In order to pursue these goals, we use experimental techniques such as: atomic/molecular beam scattering from surfaces, surface sensitive methods for preparation/characterization of well-defined surfaces, high-resolution laser spectroscopy based techniques to prepare and probe atoms/molecules in quantum state specific manner.
- April 2022: Initial tests of our newly built ‘cascaded collimator’ design based compact He atom beam source show that He beams with narrow angular divergence around 10 mrad can be produced. We are looking forward to use this compact and collimated atom beam source this for He reflectivity and real-time surface coverage measurements.
- March 2022: Our paper on imaging atomically thin films using neutral atom microscopy technique is available online
- Feb 2022: A description of our low cost setup for polarization stabilized He-Ne laser (ppb level) is available as a pre-print on ArXiv
- Dec 2021: Our paper on identifying signatures of thermal and non-thermal pathways is in plasmon induced catalytic reactions is available on Chemrxiv
- July 2021: Geetika presented her work as a ‘hot topic talk’ at the International Symposium for Molecular Beams (ISMB-2021)
We strive to create a discrimination-free, inclusive and stimulating workspace for discussing and working on interesting ideas in the fields of atomic/molecular scattering processes, chemical reaction dynamics, laser spectroscopy and related areas. We welcome interested people from diverse backgrounds, irrespective of their gender, religion, caste, sexual-orientation, ethnicity and physical ability.
Our work is supported by:
Department of Atomic Energy (Government of India)
Science and Engineering Research Board (Department of Science & Technology, Government of India)
Last updated: June 2022