101 citations · 289 across the 5 of their papers we have counts for
5 papers
Coarse-graining microscopic strains in a harmonic, two-dimensional solid and its implications for elasticity: non-local susceptibilities and non-affine noise
K. Franzrahe, P. Nielaba, S. Sengupta
In soft matter systems the local displacement field can be accessed directly by video microscopy enabling one to compute local strain fields and hence the elastic moduli using a co…
Elastic properties of 2D colloidal crystals from video microscopy
K. Zahn, A. Wille, G. Maret +2
Elastic constants of two-dimensional (2D) colloidal crystals are determined by measuring strain fluctuations induced by Brownian motion of particles. Paramagnetic colloids confined…
Elastic moduli, dislocation core energy and melting of hard disks in two dimensions
S. Sengupta, P. Nielaba, K. Binder
Elastic moduli and dislocation core energy of the triangular solid of hard disks of diameter are obtained in the limit of vanishing dislocation- antidislocation pair density, f…
Defect fugacity, Spinwave Stiffness and T_c of the 2-d Planar Rotor Model
S. Sengupta, P. Nielaba, K. Binder
We obtain precise values for the fugacities of vortices in the 2-d planar rotor model from Monte Carlo simulations in the sector with {\em no} vortices. The bare spinwave stiffness…
Elastic constants from microscopic strain fluctuations
Surajit Sengupta, Peter Nielaba, Madan Rao +1
Fluctuations of the instantaneous local Lagrangian strain , measured with respect to a static ``reference'' lattice, are used to obtain accurate estimates of the…