Brief biodata

Following his Ph.D. degree from Material Research Center, IISc, Bangalore, he had worked as Postdoctoral fellow under Prof. G. Ananthakrishna. He had obtained his masters in Physics from IIT, Guwahati. His research interest involve Theretical Materials Science and Condensed Matter Physics, in particular systems far from equilibrium and Plasticity theory. He has been a faculty member of the department of physics since 2014.

Research

Our research is focused understading complex dynamics shown in driven dissipative systems, in particular systems far from equilibrium system. We used non-equilibrium statistical mechanics and nonlinear dynamics as tools for both qualitative and quantitative measures.

Selected List of Publications

• Seung-Yong Lee, Sita Chettri,, Ritupan Sarmah , Chikako Takushima, Jun-ichi Hamada, Nobuo Nakada, Serrated flow accompanied with dynamic type transition of the Portevin-Le Chatelier effect in austenitic stainless steel , J. Materials Science & Technology, 133, 154-164 (2022)

• Z. Pu, Z. C. Xie,, Ritupan Sarmah , Y. Chen, C. Lu, G. Ananthakrishna and L. H. Dai, Spatio-temporal dynamics of jerky flow in high-entropy alloy at extremely low temperature, Philosophical Magazine, 101:2, 154-178 (2020)

• Jagadish Kumar, Ritupan Sarmah and G. Ananthakrishna, General framework for acoustic emission during plastic deformation, Phys. Rev. B, 92, 144109 (2015)

• Ritupan Sarmah and G. Ananthakrishna, Correlation between band propagation property and the nature of serrations in the Portevin–Le Chatelier effect, Acta Mater.91, 192–201 (2015)

• Ritupan Sarmah and G. Ananthakrishna, Influence of system size on spatio- temporal dynamics of a Model for Plastic Instability: Projecting low-dimensional and extensive Chaos, Phys. Rev. E,87, 052907 (2013).

• Ritupan Sarmah and G. Ananthakrishna, Projecting low-dimensional chaos from spatiotemporal dynamics in a model for plastic instability, Phys. Rev. E. 86, 056208 (2012).

• Ritupan Sarmah, G. Ananthakrishna, B. A. Sun and W. H. Wang, Hidden order in serrated flow of metallic glasses, Acta Mater. 59, 4482 (2011).