Gradient Annealing as a New Strategy to Fabricate Gradient Nanoparticle Array on Microwires.

ABSTRACT: Creating gradients of nanostructure on the surface has found broad applications such as enhanced optical spectroscopy, optical storage of information, and broadband solar energy harvesting. Here, a facile strategy is presented for fabricating gradient nanoparticle arrays with tunable size. It takes a ZnO:Ga microwire as the starting material, and the Ga³⁺ doping gradient along the microwire is induced by the high voltage applied. Such a doping gradient facilitates the formation of a temperature gradient in a Joule heating process. And this temperature gradient produced by this technique can be as high as 800 °C/mm, which could be later used for gradient annealing of thin metal films. After annealing, the thin metal films turn to gradient nanoparticle arrays. The obtained gradien

SUBMITTER: Chen A 

PROVIDER: S-EPMC9209622 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature