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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Photoplastic effect in non-crystalline materials: a nanoindentation study
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Photoplastic effect in non-crystalline materials: a nanoindentation study

机译：非晶态材料中的光塑性效应：纳米压痕研究

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摘要

Negative photoplastic effect (NPhE), i. e. the reversible influence of light on the flow stress and hardness in non-crystalline materials (mainly As-S binary chalcogenide glasses for thin-film samples), has been studied through the changes in nanoscale mechanical properties using the nanoindentation technique for various loading procedures. It has been shown that the opposite changes in local mechanical properties (Young's modulus and nanohardness) take place due to band-gap light illumination and that a pronounced non-linear (non-Hookean) mechanism of the formation of strain response is detected. This behaviour has been described in terms of conception which assumes that the heterogeneous (two-phase) structure of chalcogenide glasses undergoes modification with light. A comparative short overview of nanoindentation study of the NPhE in thin films of chalcogenide glasses and azobenzene-containing polymer films is presented in this paper.
机译：负光塑性效应（NPhE），即e。通过使用纳米压痕技术对各种加载程序进行纳米级机械性能的变化，研究了光对非晶态材料（主要是用于薄膜样品的As-S二元硫属化物玻璃）中的流动应力和硬度的可逆影响。已经表明，由于带隙光照明，发生了局部机械性能（杨氏模量和纳米硬度）的相反变化，并且检测到了应变响应形成的明显非线性（非霍克）机理。此行为已根据概念进行了描述，该概念假定硫属化物玻璃的异质（两相）结构会受到光的影响。本文对硫属化物玻璃薄膜和含偶氮苯的聚合物薄膜中NPhE的纳米压痕研究进行了比较简短的概述。

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