论文标题
利用绝缘体金属过渡的波长逐波长度无关的热辐射
Wavelength-by-wavelength temperature-independent thermal radiation utilizing an insulator-metal transition
论文作者
论文摘要
黑体辐射分布的大小和光谱随温度而变化。在这里，我们设计了涂层的温度依赖性光谱发射率，以抵消一定温度范围内黑体辐射分布的所有变化，这是由SMNIO3的非障碍物绝缘体到金属相变的实现的。在长波红外大气透明窗口内的每个波长下，我们涂层的热辐射在至少20°C的温度范围内保持恒定。我们的方法可以掩盖红外成像系统的热梯度和瞬时温度变化，包括通过波长歧视的热梯度，例如多光谱和高光谱摄像机。
Both the magnitude and spectrum of the blackbody-radiation distribution change with temperature. Here, we designed the temperature-dependent spectral emissivity of a coating to counteract all the changes in the blackbody-radiation distribution over a certain temperature range, enabled by the nonhysteretic insulator-to-metal phase transition of SmNiO3. At each wavelength within the long-wave infrared atmospheric-transparency window, the thermal radiance of our coating remains nearly constant over a temperature range of at least 20 °C. Our approach can conceal thermal gradients and transient temperature changes from infrared imaging systems, including those that discriminate by wavelength, such as multispectral and hyperspectral cameras.
