Narrowband Perfect Absorber Based on Dielectric-Metal Metasurface for Surface-Enhanced Infrared Sensing
Narrowband Perfect Absorber Based on Dielectric-Metal Metasurface for Surface-Enhanced Infrared Sensing
复制标题
用于表面增强红外传感的基于介电金属超表面的窄带完美吸收器
DOI：
10.3390/app10072295
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发表时间：
2020-03
期刊：
影响因子：
--
通讯作者：
Wei Wei
中科院分区：
文献类型：
--
作者：
Guilian Lan;Zhongxie Jin;Jinpeng Nong;Peng Luo;Caicheng Guo;Zhengguo Sang;Lei Dong;Wei Wei
我们提出了一种基于介质-金属亚表面的窄带完美吸收体，用于宽带表面增强型红外传感。研究发现，窄带理想吸收体可以在红外波段产生高品质因数的混合导模，使其对周围分析物具有很高的灵敏度。此外，通过调节入射角可以主动调制吸收体谐振波长。利用这种性能优良的吸收体在同一衬底上实现了折射率传感和红外振动指纹传感。实验结果表明，该折射率传感器的折射率灵敏度为1800 nm/riu，优值系数为62riu/−。而作为表面增强红外吸收光谱衬底，通过主动调节入射角，在不改变器件结构参数(周期、宽度、高度和折射率)的情况下，可以有效地识别和选择性地检测具有纳米厚层的分析物的两个闭合振动模式，增强50倍。我们的研究为设计高性能的红外表面增强型红外光学传感器提供了一条很有前途的途径。
We proposed a narrowband perfect absorber that was based on dielectric-metal metasurface for wide-band surface-enhanced infrared sensing. It is found that the narrowband perfect absorber can generate the hybrid guided modes with high quality-factor at infrared frequencies, which make the absorber highly sensitive to the surrounded analyte. Moreover, tuning the incident angle can actively modulate the resonant wavelength of absorber. Such an absorber with excellent features is employed to realize both refractive index sensing and infrared vibrational fingerprint sensing on a single substrate. It is demonstrated that a refractive index sensitivity of 1800 nm/RIU and figure of merit of 62 RIU−1 can be obtained as the refractive index sensor. While, as a surface enhanced infrared absorption spectroscopy substrate, two closed vibrational modes of analyte with nanometer thick layers can be effectively identified and selectively detected with 50-folds enhancement by actively tuning the incident angle without any change in the structural parameters (periodicity, width, height, and refractive index of the grating) of the device after fabricating. Our study offers a promising approach for designing high-performance surface-enhanced infrared optical sensors in the infrared region.
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DOI：
10.3390/ma11071091
发表时间：
2018-06-27
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Rifat AA;Rahmani M;Xu L;Miroshnichenko AE
通讯作者：
Miroshnichenko AE
影响因子：
3.5
作者：
Sharpe, SW;Johnson, TJ;Johnson, PA
通讯作者：
Johnson, PA
影响因子：
3.8
作者：
Wei Wei-Wei;Na Chen;Jinpeng Nong;Guilian Lan;Wei Wang;J. Yi;Linlong Tang
通讯作者：
Wei Wei-Wei;Na Chen;Jinpeng Nong;Guilian Lan;Wei Wang;J. Yi;Linlong Tang
影响因子：
3
作者：
Maharana, Pradeep Kumar;Srivastava, Triranjita;Jha, Rajan
通讯作者：
Jha, Rajan
影响因子：
64.8
作者：
Xiao, Shumin;Drachev, Vladimir P.;Shalaev, Vladimir M.
通讯作者：
Shalaev, Vladimir M.