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Double-structure combined metal nano-thin film chiral optical device

A metal nanometer and optical device technology, applied in the optical field, can solve the problems of inconspicuous circular dichroism signal and poor detection effect, and achieve the effect of enhancing circular dichroism

Active Publication Date: 2021-01-08
ZHEJIANG QIYI SPECIAL CLOTHING CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the research of chiral structure in the prior art, by designing a two-dimensional metal thin film chiral structure, it has been possible to realize the modulation of the polarization characteristics of the beam or to detect the circular dichroism of the chiral substance, but when the detected signal itself is relatively weak, The obtained circular dichroism signal is not obvious, that is, the detection effect is not very good

Method used

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  • Double-structure combined metal nano-thin film chiral optical device
  • Double-structure combined metal nano-thin film chiral optical device
  • Double-structure combined metal nano-thin film chiral optical device

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Embodiment 1

[0030] See figure 1 , figure 1 A schematic structural view of a dual-structure combined metal nano-thin film chiral optical device provided by an embodiment of the present invention. The optical device includes: a substrate 11 and a two-dimensional array 12 of chiral structures.

[0031] The material of the substrate 11 is a material with high transmittance for the used light band, such as silicon dioxide, quartz, etc., and the thickness is 200 μm-500 μm.

[0032] The chiral structure two-dimensional array 12 includes several uniformly arranged chiral structural units 13. In the chiral structure two-dimensional array 12, the first period of the chiral structural units 13 arranged in the lateral direction is P x , the second period along the longitudinal arrangement is P y . The shape of the chiral structure two-dimensional array 12 can be a circular array, a square array or an array of other shapes, which is specifically determined according to the preparation process, the...

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Abstract

The invention relates to a dual structure combined type metal nano-film chiral optical device comprising a substrate and a chiral structure two-dimensional array located on the substrate. The chiral structure two-dimensional array comprises a plurality of chiral structure units. Each chiral structure unit comprises a metal film, and a U-shaped seam and a linear seam formed in the metal film. The dual structure combined type metal nano-film chiral optical device has the advantages that the chiral structure two-dimensional array consisting of multiple dual structure metal nano-film chiral structure units, one linear seam is added to each chiral structure unit on the basis of one single U-shaped seam, and more magnetic dipoles are generated near each linear seam, so that the circular dichroism of the chiral optical device is improved compared with that of the conventional chiral optical device with a chiral structure two-dimensional array consisting of single structure chiral structure units.

Description

technical field [0001] The invention relates to the field of optics, in particular to a dual-structure combined metal nano-film chiral optical device. Background technique [0002] Chirality refers to the property that the structure and its mirror image cannot overlap. Chiral structures are ubiquitous in nature, such as proteins, glycosylation and DNA and other biological macromolecules. Chirality plays a key role in biochemistry and life evolution. Therefore, the chiral analysis of chiral molecules is very important. [0003] At present, the most direct and effective technique for molecular chiral analysis is circular dichroism. The principle of this technique is that chiral molecules absorb differently to left and right circularly polarized light. When monochromatic left-handed and right-handed circularly polarized light irradiates a certain chiral sample, the chiral sample absorbs differently to left-handed circularly polarized light, and the difference in absorption of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28G02B5/30
CPCG02B5/30G02B27/286
Inventor 左瑜冉文方
Owner ZHEJIANG QIYI SPECIAL CLOTHING CO LTD
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