Controllable medium chiral nano-enhancement device and system

Abstract

The invention relates to a contronllable medium chiral nanometer enhancement device and system, in particular to the field of chiral devices. The controllable medium chiral nanometer enhancement device comprises a substrate, a medium layer, a disulfide layer and a composite structure layer; an optical signal generates guided mode resonance in the composite structure layer and the dielectric layer, and generates surface plasmon polariton resonance on the metal upper surface, so that the heat loss and surface current of the disulfide layer are enhanced, the optical chirality of the composite structure layer is enhanced, and finally the purpose of enhancing the chirality is achieved. As a second nanorod,a third nanorod, a fourth nanorod and afifth nanorod are made of phase-change materials, the conductivity of the second nanorod, the third nanorod, the fourth nanorod and the fifth nanorod is changed due to the temperature change, and therefore the refractive index of the device is changed, that is, dynamic regulation and control of the CD signal are realized by changing the temperature.

Description

technical field [0001] 本申请涉及手性装置领域,具体而言,涉及一种可调控的介质手性纳米增强装置及系统。 Background technique [0002] 手性是指结构的几何特性,即不能通过简单的旋转或平移而与其镜像叠加。手性在自然界中广泛存在,例如DNA和蛋白质。圆二色性是指手性材料由于折射率虚部的差异导致对左旋圆偏振光(LCP)和右旋圆偏振(RCP)光具有吸收或者透射差异。近年来人造手性纳米结构因其具有天然手性材料所不能呈现的光学特性而被广泛研究,如圆二色性(CD)、不对称传输效应(AT)、负折射率等。CD光谱已经被用于手性传感、选择性热辐射、手性成像等。 [0003] 现有技术中,研究人员探索了基于金属的局部表面等离极化激元(LSP)和表面等离极化激元(SPP)的手性增强纳米结构。对于手性金属纳米系统,可以通过添加石墨烯产生杂化表面等离激元以增强CD信号,并且通过调节石墨烯的费米能级、电压控制等方式可主动调控CD信号。然而手性金属纳米系统光学损耗较强,此外石墨烯的表面等离激元存在于太赫兹和中远红外频率范围内。 [0004] 现有技术中的手性介质结构,在可见光波段对圆二色性的增强较弱,且无法动态调控CD信号。 Contents of the invention [0005] 本发明的目的在于,针对上述现有技术中的不足,提供一种可调控的介质手性纳米增强装置及系统,以解决现有技术中使得现有技术中的手性介质结构,在可见光波段对圆二色性的增强较弱,且无法动态调控CD信号的问题。 [0006] In order to achieve the above object, the technical solution adopted in the embodiment of the present invention is as follows: [0007] 第一方面,本申请提供一种可调控的介质手性纳米增强装置,装置包括:基底、介质层、二硫化物层和复合结构层;介质层设置在基底的一侧,二硫化物层设置在介质层远离基底的一侧,复合材料层设置在二硫化物层远离基底的一侧,复合材料层包括多个纳米结构部,每个纳米结构部均包括第一纳米棒、第二纳米棒、第三纳米棒、第四纳米棒和第五纳米棒,第二纳米棒、第三纳米棒、...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a controllable medium chiral nano-enhancement device and system for the above-mentioned deficiencies in the prior art, so as to solve the problems in the prior art so that the chiral medium structure in the prior art can be used in the visible light band The enhancement of circular dichroism is weak, and the CD signal cannot be dynamically adjusted

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