Mishra, Chandan K.; Nagamanasa, K. Hima; Ganapathy, Rajesh; Sood, A. K.; Gokhale, Shreyas(National Academy of Sciences, 2014)
One of the greatest challenges in contemporary condensed matter physics is to ascertain whether the formation of glasses from liquids is fundamentally thermodynamic or dynamic in origin. Although the thermodynamic paradigm ...
Nagamanasa, K. Hima; Gokhale, Shreyas; Sood, A. K.; Ganapathy, Rajesh(American Physical Society, 2014)
We present direct experimental signatures of a nonequilibrium phase transition associated with the yield point of a prototypical soft solid-a binary colloidal glass. By simultaneously quantifying single-particle dynamics ...
Gokhale, Shreyas; Nagamanasa, K. Hima; Ganapathy, Rajesh; Sood, A. K.(Nature Publishing Group, 2014)
Despite decades of research, it remains to be established whether the transformation of a liquid into a glass is fundamentally thermodynamic or dynamic in origin. Although observations of growing length scales are consistent ...
Artificial microscale heat engines are prototypical models to explore the mechanisms of energy transduction in a fluctuation-dominated regime(1,2). The heat engines realized so far on this scale have operated between thermal ...
Santhosh, V.; Voggu, R.; Chaturbedy, P.; Ganapathy, Rajesh; Rao, C. N. R.(Pergamon-Elsevier Science Ltd, 2016)
Understanding the mechanical properties of ultra-thin films formed by the self-assembly of molecules/nanoparticles/colloids at fluid-fluid interfaces is central to many technological applications. Here, we have carried out ...
Gokhale, Shreyas; Sood, A. K.; Ganapathy, Rajesh(Taylor & Francis Ltd, 2016)
The glass transition is the most enduring grand-challenge problem in contemporary condensed matter physics. Here, we review the contribution of colloid experiments to our understanding of this problem. First, we briefly ...
Mishra, Chandan K.; Sood, A. K.; Ganapathy, Rajesh(National Academy Sciences, 2016)
The monomer surface mobility is the single most important parameter that decides the nucleation density and morphology of islands during thin-film growth. During template-assisted surface growth in particular, low surface ...
Gokhale, Shreyas; Ganapathy, Rajesh; Nagamanasa, K. Hima; Sood, A. K.(American Physical Society, 2016)
We develop a scheme based on a real space microscopic analysis of particle dynamics to ascertain the relevance of dynamical facilitation as a mechanism of structural relaxation in glass-forming liquids. By analyzing the ...
Gokhale, Shreyas; Nagamanasa, K. Hima; Sood, A. K.; Ganapathy, Rajesh(IoP Publishing Ltd, 2016)
Elucidating the nature of the glass transition has been the holy grail of condensed matter physics and statistical mechanics for several decades. A phenomenological aspect that makes glass formation a conceptually formidable ...
We examine the influence of the shape of dynamical heterogeneities on the Stokes-Einstein (SE) and Stokes-Einstein-Debye (SED) relations in quasi-two-dimensional suspensions of colloidal ellipsoids. For ellipsoids with ...
Nagamanasa, K. Hima; Gokhale, Shreyas; Sood, A. K.; Ganapathy, Rajesh(Nature Publishing Group, 2015)
The transformation of flowing liquids into rigid glasses is thought to involve increasingly cooperative relaxation dynamics as the temperature approaches that of the glass transition. However, the precise nature of this ...