By using the tight-binding Su-Schrieffer-Heeger(SSH) model and a nonadiabatic dynamical evolution method,the collision of the negative polaron and positive polaron in the nondegenerate polymers is studied.
研究发现,弱电场下两个极化子碰撞分开再相遇形成极化子激子,中等强度电场下它们碰撞分开后成为两个准粒子,强电场下负电极化子和正电极化子碰撞后直接解离。
A positive diatomite filter aid was prepared by surface modification.
经表面电荷改性研制出一种表面呈正电性的硅藻土助滤剂,其ζ电位最高可达+49。
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