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迈向精确的相变热建模基于材料的光子设备

Kiumars Aryana¹, Hyun Jung Kim¹, Cosmin-Constantin Popescu²

¹NASA Langley Research Center, Hampton, VA, 23681, USA.

Small (Weinheim an der Bergstrasse, Germany)

|August 31, 2023

概括

这项研究突出了相变材料 (PCM) 对于可重新配置的光子设备至关重要的关键热特性. 了解这些特性可以提高先进光学系统的设计和效率.

科学领域:

材料科学材料科学材料科学
光学工程是指光学工程.
凝聚物质物理学凝聚物质物理学

背景情况:

可重新配置的光子设备对于现代光学系统至关重要,可用于数据通信,计算和传感等领域.
基于基的相变材料 (PCM) 提供了显著的光学对比度,使它们成为可调光子应用的理想选择.
基于PCM的设备的精确模拟对于其进步至关重要,但某些热方面被忽视了.

研究的目的:

识别和调查影响光子设备相变材料 (PCM) 行为的关键热参数.
分析聚变热量的影响,玻璃过渡过程中的热容量变化,以及液相导热率.
探索PCM设备中切换能量的扩展及其对光子应用的相关性.

主要方法:

在PCM中理论分析和建模热和相变动态.
研究特定热容量,聚变和导热性参数.
在电子与光子设备背景下对PCM行为进行比较研究.

主要成果:

确定了聚变的热量,玻璃过渡时的热容量变化和液相导热率作为PCM光子设备中的关键因素.
证明这些热效应在电子记忆中往往是可以忽略的,在光子应用中变得显著.
解释了切换能量的缩放,澄清了为什么这些因素以前在电子PCM内存中被忽视.

结论:

基于PCM的光子设备的准确建模需要结合以前被忽视的热特性.
这些发现为开发更高效,更可靠的可重新配置光学系统提供了关键的见解.
这项研究为优化下一代光子设备的设计,利用相变材料铺平了道路.

关键词:

变形无形化变形无形化阶段变换材料的不同阶段变换材料.温度的温度的温度的温度的温度.导热率导热率导热率导热率导热率导热率

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