Molecular reorientation dynamics due to direct current voltage-induced ion redistribution in undoped nematic planar cell

Molecular reorientation dynamics due to direct current voltage - induced ion redistribution in undoped nematic planar cell

Planar Molecular Dynamics Simulation of Au Clusters in Pushing Process

Based on the fact the manipulation of fine nanoclusters calls for more precise modeling, the aim of this paper is to conduct an atomistic investigation for interaction analysis of particle-substrate system for pushing and positioning purposes. In the present research, 2D molecular dynamics simulations have been used to investigate such behaviors. Performing the planar simulations can provide a ...

Molecular reorientation of a nematic liquid crystal by thermal expansion

A unique feature of nematic liquid crystals is orientational order of molecules that can be controlled by electromagnetic fields, surface modifications and pressure gradients. Here we demonstrate a new effect in which the orientation of nematic liquid crystal molecules is altered by thermal expansion. Thermal expansion (or contraction) causes the nematic liquid crystal to flow; the flow imposes...

سمت‌گیری مولکول‌های بلور مایع نماتیک در وضعیت دو بعدی و اثر چنگ زدگی‌های متناهی و نامتناهی

In this paper, the director distribution is calculated for a nematic liquid crystal, in the cell with different surface anchoring conditions and external fields. The effects of finite and infinite surface anchoring on molecular orientations for one dimensional geometry are discussed. In these situations, the planar alignment is considered. Then, in a two dimensional geometry the planar and homo...

Ion-irradiation-induced ferromagnetism in undoped ZnO thin films

We have introduced defects in ZnO epitaxial thin films by swift heavy Ag ion irradiation and investigated systematically their magnetic, electrical and optical properties. Oxygen annealed ZnO films are epitaxial single crystals that exhibit no long-range magnetic order. However, in this paper it is shown that room-temperature ferromagnetism (RTFM) can be introduced in a controlled manner in the...