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Browsing Rajesh Ganapathy by Issue Date

Browsing Rajesh Ganapathy by Issue Date

Now showing items 1-11 of 11

Dynamical facilitation governs glassy dynamics in suspensions of colloidal ellipsoids

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 ...
Experimental signatures of a nonequilibrium phase transition governing the yielding of a soft glass

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 ...
Growing dynamical facilitation on approaching the random pinning colloidal glass transition

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 ...
Shape of Dynamical Heterogeneities and Fractional Stokes-Einstein and Stokes-Einstein-Debye Relations in Quasi-Two-Dimensional Suspensions of Colloidal Ellipsoids

Mishra, Chandan K.; Ganapathy, Rajesh (American Physical Society, 2015)

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 ...
Direct measurements of growing amorphous order and non-monotonic dynamic correlations in a colloidal glass-former

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 ...
A micrometre-sized heat engine operating between bacterial reservoirs

Krishnamurthy, Sudeesh; Ghosh, Subho; Chatterji, Dipankar; Ganapathy, Rajesh; Sood, A. K. (Nature Publishing Group, 2016)

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 ...
Localized Excitations and the Morphology of Cooperatively Rearranging Regions in a Colloidal Glass-Forming Liquid

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 ...
Mechanical properties of C-60 thin films at the air-water interface

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 ...
Influence of an amorphous wall on the distribution of localized excitations in a colloidal glass-forming liquid

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 ...
Deconstructing the glass transition through critical experiments on colloids

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 ...
Site-specific colloidal crystal nucleation by template-enhanced particle transport

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 ...

Now showing items 1-11 of 11

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