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基于具有相变材料的多功能纳米结构的可调谐红外探测、辐射冷却及红外激光兼容伪装

Tunable Infrared Detection, Radiative Cooling and Infrared-Laser Compatible Camouflage Based on a Multifunctional Nanostructure with Phase-Change Material.

作者信息

Luo Mingyu, Li Xin, Zhang Zhaojian, Ma Hansi, Du Te, Jiang Xinpeng, Zhang Zhenrong, Yang Junbo

机构信息

Guangxi Key Laboratory of Multimedia Communications and Network Technology, School of Computer, Electronics and Information, Guangxi University, Nanning 530004, China.

Center of Material Science, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.

出版信息

Nanomaterials (Basel). 2022 Jun 30;12(13):2261. doi: 10.3390/nano12132261.

DOI:10.3390/nano12132261
PMID:35808095
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9268176/
Abstract

The nanostructure composed of nanomaterials and subwavelength units offers flexible design freedom and outstanding advantages over conventional devices. In this paper, a multifunctional nanostructure with phase-change material (PCM) is proposed to achieve tunable infrared detection, radiation cooling and infrared (IR)-laser compatible camouflage. The structure is very simple and is modified from the classic metal-dielectric-metal (MIM) multilayer film structure. We innovatively composed the top layer of metals with slits, and introduced a non-volatile PCM GeSbTe (GST) for selective absorption/radiation regulation. According to the simulation results, wide-angle and polarization-insensitive dual-band infrared detection is realized in the four-layer structure. The transformation from infrared detection to infrared stealth is realized in the five-layer structure, and laser stealth is realized in the atmospheric window by electromagnetic absorption. Moreover, better radiation cooling is realized in the non-atmospheric window. The proposed device can achieve more than a 50% laser absorption rate at 10.6 μm while ensuring an average infrared emissivity below 20%. Compared with previous works, our proposed multifunctional nanostructures can realize multiple applications with a compact structure only by changing the temperature. Such ultra-thin, integratable and multifunctional nanostructures have great application prospects extending to various fields such as electromagnetic shielding, optical communication and sensing.

摘要

由纳米材料和亚波长单元组成的纳米结构提供了灵活的设计自由度，与传统器件相比具有突出优势。本文提出了一种具有相变材料（PCM）的多功能纳米结构，以实现可调谐红外探测、辐射冷却和红外（IR）激光兼容伪装。该结构非常简单，是在经典的金属-电介质-金属（MIM）多层膜结构基础上改进而来。我们创新性地将顶层金属制成带有狭缝的结构，并引入非易失性PCM GeSbTe（GST）用于选择性吸收/辐射调控。根据模拟结果，在四层结构中实现了广角和偏振不敏感的双波段红外探测。在五层结构中实现了从红外探测到红外隐身的转变，并通过电磁吸收在大气窗口实现了激光隐身。此外，在非大气窗口实现了更好的辐射冷却。所提出的器件在10.6μm处可实现超过50%的激光吸收率，同时确保平均红外发射率低于20%。与先前的工作相比，我们提出的多功能纳米结构仅通过改变温度就能以紧凑的结构实现多种应用。这种超薄、可集成且多功能的纳米结构在电磁屏蔽、光通信和传感等各个领域具有广阔的应用前景。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/d267dd77861c/nanomaterials-12-02261-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/842d5405091e/nanomaterials-12-02261-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/fbae51b28a8c/nanomaterials-12-02261-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/96376c133598/nanomaterials-12-02261-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/67a83bdfc732/nanomaterials-12-02261-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/937a19714095/nanomaterials-12-02261-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/e2c6fa45e1ea/nanomaterials-12-02261-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/ad335d6df553/nanomaterials-12-02261-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/3c7e6fe492cf/nanomaterials-12-02261-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/d267dd77861c/nanomaterials-12-02261-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/842d5405091e/nanomaterials-12-02261-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/fbae51b28a8c/nanomaterials-12-02261-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/96376c133598/nanomaterials-12-02261-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/67a83bdfc732/nanomaterials-12-02261-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/937a19714095/nanomaterials-12-02261-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/e2c6fa45e1ea/nanomaterials-12-02261-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/ad335d6df553/nanomaterials-12-02261-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/3c7e6fe492cf/nanomaterials-12-02261-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/65ee/9268176/d267dd77861c/nanomaterials-12-02261-g009.jpg

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