We study the stabilization and electrical manipulation of skyrmions in magnetic ultrathin films absence an applied field. show that this requires increased anisotropy, controlled by sample thickness, as compared to usual skyrmionic samples, so uniform state corresponds zero-field ground metastable excitations. Although skyrmion at zero field is demonstrated over a broad range thicknesses, contr...

In the process of production or use, micro defects (micro particles pores) will be produced in thin metal plate. The number and size these determine quality plate, affecting its service life factor safety.Therefore, quantitative accurate characterization is a necessary condition to ensure safety plate products.This article studies application motion induced eddy current magnetic field testing e...

The current state of knowledge on the impact of grain boundaries in CdTe solar cells is reviewed with emphasis being placed on working cell structures. The role of the chemical composition of grain boundaries as well as growth processes are discussed, along with characterisation techniques such as electron beam induced current and cathodoluminescence, which are capable of extracting information...

this paper describes the effects of induced magnetic field and partial slip on the peristaltic flow of a couple stress fluids in an asymmetric channel. the two dimensional equation of couple stress fluid are simplified by making the assumptions of long wave length and low reynolds number. the exact solutions of reduced momentum equation and magnetic force function have been computed in wave fra...

The current field study compares the time preferences of young adults of similar ages but in two very different environments, one more dangerous and uncertain than the other. Soldiers, college students and a control group of teenagers answered questionnaires about their time preferences. During mandatory service, soldiers live in a violent atmosphere where they face great uncertainty about the ...