Size-dependent polarization distribution in ferroelectric nanostructures: Phase field simulations

Real Space Phase Field Simulations of Ferroelectric Materials

Ferroelectric perovskites are used in various transducer, memory and optical applications due to their attractive electromechanical and optical properties. In these applications, ferroelectrics often have complex geometries and function under complex electro-mechanical loadings. Phase-field models are typically used to predict the formation of microstructural patterns and subsequent evolution f...

Ferroelectric Polarization Dependent Interface Effects

Size- and shape-dependent phase transformations in wurtzite ZnS nanostructures.

This paper describes the equilibrium morphologies of zinc sulfide nanoparticles in the wurtzite phase as a function of size, determined using ab initio Density Functional Theory (DFT) simulations and a shape-dependent thermodynamic model predicting the Gibbs free energy of a nanoparticle. We investigate the relative stabilities of a variety of nanoparticle shapes based on the wurtzite structure...

synthesis of platinum nanostructures in two phase system

چکیده پلاتین، فلزی نجیب، پایدار و گران قیمت با خاصیت کاتالیزوری زیاد است که کاربرد های صنعتی فراوانی دارد. کمپلکس های پلاتین(ii) به عنوان دارو های ضد سرطان شناخته شدند و در شیمی درمانی بیماران سرطانی کاربرد دارند. خاصیت کاتالیزوری و عملکرد گزینشی پلاتین مستقیماً به اندازه و- شکل ماده ی پلاتینی بستگی دارد. بعضی از نانو ذرات فلزی در سطح مشترک مایع- مایع سنتز شده اند، اما نانو ساختار های پلاتین ب...

A review of size-dependent elasticity for nanostructures

Nanotechnology is one of the pillars of human life in the future. This technology is growing fast and many scientists work in this field. The behavior of materials in nano size varies with that in macro dimension. Therefore scientists have presented various theories for examining the behavior of materials in nano-scale. Accordingly, mechanical behavior of nano-plates, nanotubes nano-beams and n...