168 citations · 490 across the 4 of their papers we have counts for
4 papers
Optical generation and detection of local non-equilibrium phonons in suspended graphene
Sean Sullivan, Ajit Vallabhaneni, Iskandar Kholmanov +3
The measured frequencies and intensities of different first- and second- order Raman peaks of suspended graphene are used to show that optical phonons and different acoustic phonon…
First-Principles Simulation of Electron Mean-Free-Path Spectra and Thermoelectric Properties in Silicon
Bo Qiu, Zhiting Tian, Ajit Vallabhaneni +5
The mean-free-paths (MFPs) of energy carriers are of critical importance to the nano-engineering of better thermoelectric materials. Despite significant progress in the first-princ…
Nonlinear thermal transport and negative differential thermal conductance in graphene nanoribbons
Jiuning Hu, Yan Wang, Ajit Vallabhaneni +2
We employ classical molecular dynamics to study the nonlinear thermal transport in graphene nanoribbons (GNRs). For GNRs under large temperature biases beyond linear response regim…
Tuning the thermal conductivity of graphene nanoribbons by edge passivation and isotope engineering: a molecular dynamics study
Jiuning Hu, Stephen Schiffli, Ajit Vallabhaneni +2
Using classical molecular dynamics simulation, we have studied the effect of edge-passivation by hydrogen (H-passivation) and isotope mixture (with random or supperlattice distribu…