We derive a microscopic Poisson equation using the density-density response function. This
equation is valid for any realistic potential perturbation and permits the study of dielectric …

We combined the Maxwell-Garnett effective medium theory with the Kramers-Krönig
relations to obtain the complex dielectric function ϵ of colloidal PbS, PbSe, and PbTe …

Ultrashort-channel junctionless FETs (JL-FETs) were fabricated on silicon-on-insulator
substrates utilizing atomically sharp V-shaped grooves produced by anisotropic wet etching …

Broadband light absorbers are highly desirable in various applications including solar-
energy harvesting, thermo-photovoltaics, and photon detection. The Fabry–Perot (F–P) …

We establish the dependence of the permittivity of oxidized ultra-thin silicon films on the film
thickness by means of atomistic simulations within the density-functional-based tight-binding …

The size dependence of the dielectric constants and optical absorption for silicon
nanostructured films are investigated using density-functional theory. A critical thickness of …

We propose an efficient method to compute the dielectric permittivity of nanostructures by
combining first principles density functional perturbation theory with effective medium theory …

We improvise an approach to carry out first-principles simulations of graphene-based
vertical field-effect tunneling transistors that consist of a graphene| h-BN| graphene …

We have investigated the static dielectric properties of silicon rods and slabs below 10 nm⁠,
in the long wavelength limit, by using first-principles density functional theory calculations …

We investigate the differences between the dielectric properties of bulk silicon nitride and
thin films, in both crystalline and amorphous structures. We show that to correctly account for …