130 citations · 288 across the 10 of their papers we have counts for
10 papers
Onset of slow dynamics in dense suspensions of active colloids
Antina Ghosh, Sayan Maity, Vijayakumar Chikkadi
Slow relaxation and heterogeneous dynamics are characteristic features of glasses. The presence of glassy dynamics in nonequilibrium systems, such as active matter, is of significa…
Microscopic strain correlations in sheared amorphous solids
Sagar Malik, L. Meenakshi, Atharva Pandit +4
We investigate spatial correlations of strain fluctuations in sheared colloidal glasses and simulations of sheared amorphous solids. The correlations reveal a quadrupolar symmetry…
Modelling of strain fields in sheared colloidal glasses using Eshelby inclusions
Atharva Pandit, Antina Ghosh, Vijayakumar Chikkadi
When amorphous solids are strained they display elastic deformation at small strain, however, beyond a critical strain they yield and begin to flow plastically. The origin of this…
Direct observation of percolation in the yielding transition of colloidal glasses
Antina Ghosh, Zoe Budrikis, Vijayakumar Chikkadi +3
When strained beyond the linear regime, soft colloidal glasses yield to steady-state plastic flow in a way that is similar to the deformation of conventional amorphous solids. Due…
Jamming Percolation in Three Dimensions
Antina Ghosh, Eial Teomy, Yair Shokef
We introduce a three-dimensional model for jamming and glasses, and prove that the fraction of frozen particles is discontinuous at the directed-percolation critical density. In ag…
Critical role of pinning defects in scroll-wave breakup in active media
S. Sridhar, Anitna Ghosh, Sitabhra Sinha
The breakup of rotating scroll waves in three-dimensional excitable media has been linked to important biological processes. The known mechanisms for this transition almost exclusi…
Connecting Structural Relaxation with the Low Frequency Modes in a Hard-Sphere Colloidal Glass
Antina Ghosh, Vijayakumar Chikkadi, Peter Schall +1
Structural relaxation in hard-sphere colloidal glasses has been studied using confocal microscopy. The motion of individual particles is followed over long time scales to detect th…
Low energy modes and Debye behaviour in a colloidal crystal
Antina Ghosh, Romain Mari, V. K. Chikkkadi +3
We study the vibrational spectrum and the low energy modes of a three dimensional colloidal crystal using confocal microscopy. This is done in a two-dimensional cut through a three…
Low energy modes and Debye behavior in a colloidal crystal
A. Ghosh, R. Mari, V. K. Chikkadi +3
withdrawn by the author due to double submission in arXiv:1102.4271 .
Density of states of colloidal glasses
Antina Ghosh, Vijayakumar K. Chikkadi, Peter Schall +2
Glasses are structurally liquid-like, but mechanically solid-like. Most attempts to understand glasses start from liquid state theory. Here we take the opposite point of view, and…