使用基于相变材料的多层结构调节的定向热辐射.
Kandammathe Valiyaveedu Sreekanth1,2, Qing Yang Steve Wu1, Sambhu Jana3,4
1Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis #08-03, Singapore 138634, Republic of Singapore. sreekanth@imre.a-star.edu.sg.
Nanoscale horizons
|August 15, 2025
概括
研究人员使用Sb2S3.3等相变材料 (PCM) 开发了一种可调节的新型热发射器. 该设备允许对热发射的方向和光谱范围进行动态控制,这对于先进的智能热发射器至关重要.
科学领域:
- 光子学是指光子学的使用方法.
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 智能热发射器需要可调节的热发射的方向和光谱控制.
- 目前的光子策略提供了有限的可调性,经常固定角度范围.
研究的目的:
- 提出一种基于相变材料 (PCM) 的新型可调的多层结构,用于积极调节热发射中的角选择性.
- 为了展示一个可调节角度范围的无损热发射器.
主要方法:
- 使用交替的SiO2和Sb2S3 (高结晶温度PCM) 薄膜制造一个1.35μm可调节的多层堆.
- 在SiO2-Sb2S3多层腔内使用可调节的布鲁斯特模式来对热辐射进行定向控制.
- 通过微型加热器集成结构演示电控热排放.
主要成果:
- 在宽光谱带 (10-18μm) 中,在p极化光的布鲁斯特角度实现了超过95%的峰值发射率.
- 通过Sb2S3.3.的非挥发性相位过渡属性,证明了最大热辐射的可调节角度范围.
- 证实了电控热发射,展示了一个多功能和不需要 lithography 的平台.
结论:
- 开发的Sb2S3-SiO2多层结构为定向热辐射的角度范围提供了动态控制.
- 这种可调节的光子结构适用于需要适应性热发射特性的新兴应用.
- 该平台为先进的热发射器设计提供了一种多功能,无光刻的解决方案.
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