22 citations · 73 across the 7 of their papers we have counts for
7 papers
Mixed Nonlinear Response and Transition of Nonlinearity in a Piezoelectric Membrane
Nishta Arora, Priyanka Singh, Randhir Kumar +2
Nonlinearities play a critical role in the dynamics of mechanical resonators, enhancing sensitivity and enabling signal manipulation. Understanding the parameters affecting nonline…
A robust tip-less positioning device for near-field investigations: Press and Roll Scan (PROscan)
Hsuan-Wei Liu, Michael A. Becker, Korenobu Matsuzaki +3
Scanning probe microscopes scan and manipulate a sharp tip in the immediate vicinity of a sample surface. The limited bandwidth of the feedback mechanism used for stabilizing the s…
Optical Thouless conductance and level-spacing statistics in two-dimensional Anderson localizing systems
Sandip Mondal, Randhir Kumar, Martin Kamp +1
We experimentally investigate spectral statistics in Anderson localization in two-dimensional amorphous disordered media. Intensity distributions captured over an ultrabroad wavele…
Discrepant transport characteristics under Anderson localization at the two limits of disorder
Randhir Kumar, Sandip Mondal, M. Balasubrahmaniyam +2
Anderson localization is a striking phenomenon wherein transport of light is arrested due to the formation of disorder-induced resonances. Hitherto, Anderson localization has been…
A quantitative analysis of the emergence of memory in the viscously coupled dynamics of colloids
Shuvojit Paul, Randhir Kumar, Ayan Banerjee
We provide a quantitative description of the evolution of memory from the apparently random Markovian dynamics of a pair of optically trapped colloidal microparticles in water. The…
Temporal complexity in emission from Anderson localized lasers
Randhir Kumar, M. Balasubrahmaniyam, K Shadak Alee +1
Anderson localization lasers exploit resonant cavities formed due to structural disorder. The inherent randomness in the structure of these cavities realizes a probability distribu…