六方氮化硼
氮化硼
二氧化二钒
材料科学
六方晶系
硼
氮化钒
光电子学
钒
氮化物
纳米技术
化学
冶金
薄膜
结晶学
有机化学
图层(电子)
石墨烯
作者
Xianglian Song,Zizhuo Liu,Jacob Scheuer,Yuanjiang Xiang,Koray Aydın
标识
DOI:10.1088/1361-6463/ab0262
摘要
Here, a metasurface absorber with switchable spectral response is proposed and discussed. The device is constructed by combining a phase change material (vanadium dioxide, VO2) and a naturally hyperbolic materials (hexagonal boron nitride, hBN), utilizing surface plasmon polaritons (SPPs) and surface phonon polaritons (SPhPs), respectively, at different thermal conditions in the same system. Specifically, we take advantage of the excitation of SPhP in hBN below the VO2 critical temperature (T T c ), to switch between narrow-band near-perfect absorption at ~7.2 μm to broadband absorption at 8–12 μm. It is shown that SPPs and SPhPs can be excited, respectively, by controlling the temperature, offering new opportunities in designing tunable artificial materials and devices for promising nanophotonics applications.
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