Infrared optical modulation characteristics of W-doped VO2(M) nanoparticles in the MWIR and LWIR regions
Infrared optical modulation characteristics of W-doped VO2(M) nanoparticles in the MWIR and LWIR regions
复制标题
W掺杂VO2(M)纳米粒子在MWIR和LWIR区域的红外光调制特性
DOI：
10.1016/j.mssp.2020.105141
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发表时间：
2020-11-15
影响因子：
4.1
通讯作者：
Cheng, Haifeng
中科院分区：
文献类型：
--
作者：
Ji, Haining;Liu, Dongqing;Cheng, Haifeng
二氧化钒 (VO2) 是一种出色的热致变色材料，由于其可逆相变与红外光学特性的突变相结合，可用于自适应红外伪装。然而，相对较高的相变温度以及中红外和远红外区域不清楚的红外光调制特性在很大程度上限制了其实际应用。在此，成功制备了 W 掺杂 VO2 纳米颗粒来降低转变温度。当W的有效掺杂量为1.70%时，转变温度降低至43.2℃。重要的是，首次在MWIR（3-5μm）和LWIR（8-14μm）热大气窗口中研究了W掺杂VO2纳米颗粒的红外特性，表现出显着的红外光学变化，发射率变化Delta epsilon = 0.17 Delta epsilon = 0.28。这些有利的结果进一步促进了自适应伪装的发展。
Vanadium dioxide (VO2) is a remarkable thermochromic material for application in adaptive infrared camouflage due to the reversible phase transition that is coupled with an abrupt change in infrared optical properties. However, the relatively high phase transition temperature and the unclear infrared optical modulation characteristics in the mid-infrared and far-infrared regions largely restrict its practical applications. Here, W-doped VO2 nanoparticles were successfully prepared to reduce the transition temperature. When the effective doping amount of W was 1.70%, the transition temperature decreased to 43.2 degrees C. Importantly, the infrared properties of W-doped VO2 nanoparticles were studied in both MWIR (3-5 mu m) and LWIR (8-14 mu m) thermal atmospheric windows, for the first time, which exhibited significant infrared optical changes, with emissivity variation of Delta epsilon = 0.17 and Delta epsilon = 0.28, respectively. These favorable results further promote the development of the adaptive camouflage.