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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers & Short Notes >Mechanical Strain Generation in a Polydiacetylene Crystal due to Photoinduced Phase Transition
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Mechanical Strain Generation in a Polydiacetylene Crystal due to Photoinduced Phase Transition

机译：由于光致相变而在聚二乙炔晶体中产生机械应变

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摘要

The mechanical strain generation in a polydiacetylene crystal caused by light irradiation was directly measured. Using a thin cantilever made of this material, the transient deflection response of the cantilever subjected to pulse laser irradiation was precisely detected on the millisecond scale. The cantilever exhibited a long-term sustained deflection strongly dependent on temperature. This was consistent with the bimorph formation due to the phase transition of the thin surface layer induced by the light irradiation. The response time was less than 2ms. The conversion efficiency from light energy to elastic energy was estimated to be 2 x 10~(-8). This new actuator principle can be used to achieve a large power density relating to the phase transition of solid materials with a rapid response time by excluding slow heat cycles.
机译：直接测量了由光照射在聚二乙炔晶体中产生的机械应变。使用由这种材料制成的薄悬臂，可以在毫秒级上精确检测受到脉冲激光照射的悬臂的瞬态偏转响应。悬臂显示出长期持续的挠曲，强烈依赖于温度。这与由于光照射引起的薄表面层的相变而导致的双晶型形成一致。响应时间小于2ms。从光能到弹性能的转换效率估计为2 x 10〜（-8）。通过排除缓慢的热循环，这种新的致动器原理可用于以快速响应时间实现与固体材料相变有关的大功率密度。

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