6 papers
First-principles electron-phonon scattering in real-time TDDFT
Zhengwei Nie, Subhojit Pal, Marti Lüders +4
Real-time time-dependent density functional theory provides a first-principles description of coherent electron dynamics in laser-driven solids, but its unitary formulation cannot…
Attractive and repulsive terms in multi-filament dispersion interactions
Subhojit Pal, John F. Dobson, Mathias Boström
Filamentary objects such as nano-wires, nanotubes and DNA are of current interest in physics, nanoscience, chemistry, biology and medicine. They can interact via strong, exceptiona…
Beyond Attraction: A Novel Approach to Repulsive Casimir-Lifshitz Forces using heterogeneous off-stoichiometry in gapped metals
S. Pal, S. Osella, O. I. Malyi +1
We uncover a novel physical mechanism that enables a switch between attractive and repulsive Casimir forces when a Teflon surface interacts with a new form of quantum material (i.e…
Inverse design for Casimir-Lifshitz force near heterogeneous gapped metal surface
M. Boström, S. Pal, H. R. Gopidi +4
The Casimir-Lifshitz force is calculated between a heterogeneous gapped metal surface and a silica sphere attached to an AFM cantilever tip. We demonstrate that heterogeneous surfa…
Dispersion Interaction Between Thin Conducting Cylinders
Subhojit Pal, Iver Brevik, Mathias Boström
The ground state and excited state resonance dipole-dipole interaction energy between two elongated conducting molecules are explored. We review the current status for ground state…
Do 1-dimensional metals prefer to form even-numbered van der Waals clusters ?
Subhojit Pal, John F. Dobson
Parallel quasi-one-dimensional metals are known to experience strong dispersion (van der Waals, vdW) interactions that fall off unusually slowly with separation between the metals.…