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使用像素化非成像微光学进行定向热发射和显示

Ziwei Fan^1,2, Taeseung Hwang³, Sam Lin³

¹Department of Aerospace Engineering, Texas A&M University, College Station, USA.

Nature communications

|May 28, 2024

概括

研究人员开发了一种像素化微发射器,用于超宽带,定向热辐射控制. 这一创新使得高效的热能发射成为可能,这对于先进的传感和能源应用至关重要.

科学领域:

光学和光子学在光学和光子学.
热力工程是热力工程中的一个.
材料科学材料科学材料科学

背景情况:

热辐射本质上是宽带的,不连贯的和非定向的.
控制热辐射方向对于高效的热传感,成像和能源设备至关重要.
使用共振或传播模式的现有方法产生窄带,极化辐射,限制效率.

研究的目的:

实验证明超宽带,偏振独立的热辐射的定向控制.
开发一个紧的像素化定向微发射器,用于可调节的角控制.
为了展示应用程序,如像素化红外显示器.

主要方法:

使用像素化定向微发射器设计.
采用非成像光学原理进行角度控制.
制造和测试微发射器的发射力对比度和定向性能.

主要成果:

实现了超宽带,极化独立的热辐射定向控制.
证明可调节的角度控制与显著的辐射率对比度.
成功创建了一个带有像素的红外显示器,可视度取决于方向.

结论:

像素化非成像微光学方法提供了高效的定向热辐射控制.
这项技术在辐射冷却,红外光谱,热光伏和热伪装方面有潜在的应用.

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