摩尔吸收率
材料科学
光学
光电子学
吸光度
极化(电化学)
宽带
吸收(声学)
物理
化学
物理化学
复合材料
作者
Aqib Raza Shah,Muhammad Naveed,Sumbel Ijaz,Arbab Abdur Rahim,Muhammad Zubair,Muhammad Qasim Mehmood,Yehia Massoud
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2023-08-16
卷期号:98 (9): 095514-095514
被引量:8
标识
DOI:10.1088/1402-4896/aceb39
摘要
Abstract Tunable meta-devices trigger immense interest in many applications like biosensing, thermal camouflage, radiative cooling, thermal emitting, infrared imaging, and energy harvesting. This paper presents a polarization-independent broadband tunable absorbing and reflecting meta-device using a phase change material Germanium-Antimony-Tellurium (GST). The proposed design manifests high absorptivity >80% over a broadband range of wavelength spanning the mid-IR regime. Furthermore, by changing the phase of GST material from crystalline to amorphous with the help of external stimuli, the absorbance of the device was reduced to almost zero in the range from 4 μ m to 12 μ m. To previse the angular constancy of the meta-absorber, the absorptivity was scrutinized under different incidence angles in both transverse magnetic (TM) and transverse electric (TE) polarizations which manifested the robustness of the proposed meta-absorber. As a result, the proposed absorber has tunable broadband absorbance and angular stability, which proclaim great potential in applications such as thermal camouflage, radiation detection, thermal emitter, and stealth technology, etc.
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