100 citations · 288 across the 22 of their papers we have counts for
22 papers · 1 filter
Charging capacitors from thermal fluctuations using diodes
P. M. Thibado, J. C. Neu, Pradeep Kumar +2
We theoretically consider a graphene ripple as a Brownian particle coupled to an energy storage circuit. When circuit and particle are at the same temperature, the second law forbi…
Fluctuation-induced current from freestanding graphene: toward nanoscale energy harvesting
P. M. Thibado, P. Kumar, Surendra Singh +3
At room temperature, micron-sized sheets of freestanding graphene are in constant motion even in the presence of an applied bias voltage. We quantify the out-of-plane movement by c…
Anomalous Dynamical Behavior of Freestanding Graphene Membranes
M. L. Ackerman, P. Kumar, M. Neek-Amal +3
We report subnanometer, high-bandwidth measurements of the out-of-plane (vertical) motion of atoms in freestanding graphene using scanning tunneling microscopy. By tracking the ver…
Reflection high-energy electron diffraction and scanning tunneling microscopy study of InP(001) surface reconstructions
V. P. LaBella, Z. Ding, D. W. Bullock +2
The reconstructions of the InP(001) surface prepared by molecular beam epitaxy have been studied with in situ reflection high-energy electron diffraction (RHEED) and scanning tunne…
Time-evolution of the GaAs(0 0 1) pre-roughening process
Z. Ding, D. W. Bullock, P. M. Thibado +2
The GaAs(0 0 1) surface is observed to evolve from being perfectly flat to a surface half covered with one-monolayer high spontaneously formed GaAs islands. The dynamics of this pr…
Electron-beam evaporated cobalt films on molecular beam epitaxy prepared GaAs(001)
Z. Ding, P. M. Thibado, C. Awo-Affouda +1
We have deposited Co films on the GaAs(001) surface by using an e-beam evaporation method. The thicknesses of the Co films are measured by using x-ray reflectivity and Rutherford b…