Replicable Quasi-Three-Dimensional Plasmonic Nanoantennas for Infrared Bandpass Filtering
Replicable Quasi-Three-Dimensional Plasmonic Nanoantennas for Infrared Bandpass Filtering
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DOI：
10.1021/acsami.1c03932
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发表时间：
2021-05-14
影响因子：
9.5
通讯作者：
Lee, Chi Hwan
中科院分区：
文献类型：
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作者：
Kim, Bongjoong;Hwang, Jehwan;Lee, Chi Hwan
准三维设计的金属-介质混合纳米天线提供了一种独特的能力，可以在纳米尺度上控制超过衍射极限的光，这使得强大的光学操纵技术成为可能。然而，这些纳米天线的制造在很大程度上依赖于纳米光刻技术的使用，这些技术既耗时又耗费成本，阻碍了它们在广泛应用中的应用。在这里，我们报告了一种通用的方法，使这些纳米天线能够从其硅模重复复制，并具有用于红外带通滤波的定制光学特征。综合的实验和计算分析揭示了这种方法的内在机理，也为多光谱成像中红外滤光片的语用翻译提供了技术指导。
Quasi-three-dimensionally designed metal-dielectric hybrid nanoantennas have provided a unique capability to control light at the nanoscale beyond the diffraction limit, which has enabled powerful optical manipulation techniques. However, the fabrication of these nanoantennas has largely relied on the use of nanolithography techniques that are time- and cost-consuming, impeding their application in wide-ranging use. Herein, we report a versatile methodology enabling the repetitive replication of these nanoantennas from their silicon molds with tailored optical features for infrared bandpass filtering. Comprehensive experimental and computational analyses revealed the underlying mechanism of this methodology and also provided a technical guideline for pragmatic translation into infrared filters in multispectral imaging.