5 papers
Emergent power-law interactions in disordered crystals
Pappu Acharya, Debankur Das, Surajit Sengupta +1
We derive exact results for the fluctuations in energy produced by microscopic disorder in near-crystalline athermal systems. Our formalism captures the heterogeneity in the elasti…
Disorder Perturbation Expansion for Athermal Crystals
Pappu Acharya, Debankur Das, Kabir Ramola
We introduce a perturbation expansion for athermal systems that allows an exact determination of displacement fields away from the crystalline state as a response to disorder. We s…
Long-range correlations in pinned athermal networks
Debankur Das, Pappu Acharya, Kabir Ramola
We derive exact results for displacement fields that develop as a response to external pinning forces in two dimensional athermal networks. For a triangular lattice arrangement of…
Wrinkles, folds and ripplocations: unusual deformation structures of confined elastic sheets at non-zero temperatures
Debankur Das, Jürgen Horbach, Peter Sollich +2
We study the deformation of a fluctuating crystalline sheet confined between two flat rigid walls as a simple model for layered solids where bonds among atoms {\it within} the same…
Plastic deformation of a permanently bonded network: stress relaxation by pleats
Saswati Ganguly, Debankur Das, Jürgen Horbach +3
We show that a flat two dimensional network of connected vertices, when stretched, may deform plastically by producing `pleats'; system spanning linear structures with width compar…