298 citations · 388 across the 10 of their papers we have counts for
11 papers
Disorder engineering: From structural coloration to acoustic filters
Nitin Upadhyaya, Ariel Amir
We study Anderson localization of waves in a one dimensional disordered meta-material of bilayers comprising of thin fixed length scatterers placed randomly along a homogenous medi…
Kink-antikink asymmetry and impurity interactions in topological mechanical chains
Yujie Zhou, Bryan Gin-ge Chen, Nitin Upadhyaya +1
We study the dynamical response of a diatomic periodic chain of rotors coupled by springs, whose unit cell breaks spatial inversion symmetry. In the continuum description, we deriv…
Nuts and bolts of supersymmetry
Nitin Upadhyaya, Bryan Gin-ge Chen, Vincenzo Vitelli
A topological mechanism is a zero elastic-energy deformation of a mechanical structure that is robust against smooth changes in system parameters. Here, we map the nonlinear elasti…
Nonlinear conduction via solitons in a topological mechanical insulator
Bryan Gin-ge Chen, Nitin Upadhyaya, Vincenzo Vitelli
Networks of rigid bars connected by joints, termed linkages, provide a minimal framework to design robotic arms and mechanical metamaterials built out of folding components. Here,…
Shear shocks in fragile networks
Stephan Ulrich, Nitin Upadhyaya, Bas van Opheusden +1
A minimal model for studying the mechanical properties of amorphous solids is a disordered network of point masses connected by unbreakable springs. At a critical value of its mean…
Soliton attenuation and emergent hydrodynamics in fragile matter
N. Upadhyaya, L. R. Gomez, V. Vitelli
Disordered packings of soft grains are fragile mechanical systems that loose rigidity upon lowering the external pressure towards zero. At zero pressure, we find that any infinites…
Solitons and thermal fluctuations in strongly nonlinear solids
N. Upadhyaya, A. M. Turner, V. Vitelli
We study a chain of anharmonic springs with tunable power law interactions as a minimal model to explore the propagation of strongly non-linear solitary wave excitations in a backg…
Transmission and reflection of strongly nonlinear solitary waves at granular interfaces
A. M. Tichler, L. R. Gomez, N. Upadhyaya +3
The interaction of a solitary wave front with an interface formed by two strongly-nonlinear non-cohesive granular lattices displays rich behaviour, characterized by the breakdown o…
Quantum Buckling
N. Upadhyaya, V. Vitelli
We study the mechanical buckling of a two dimensional membrane coated with a thin layer of superfluid. It is seen that a singularity (vortex or anti-vortex defect) in the phase of…
Dispersion and damping of two-dimensional dust acoustic waves: Theory and Simulation
Nitin Upadhyaya, Z. L. Miskovic, L. -J. Hou
A two-dimensional generalized hydrodynamics (GH) model is developed to study the full spectrum of both longitudinal and transverse dust acoustic waves (DAW) in strongly coupled com…
Modeling electrolytically top gated graphene
Z. L. Miskovic, N. Upadhyaya
We investigate doping of a single-layer graphene in the presence of electrolytic top gating. The interfacial phenomena is modeled using a modified Poisson-Boltzmann equation for an…