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A micro-nano optical structure

An optical structure, micro-nano technology, applied in the field of micro-nano optics, can solve the problem of weak circular dichroism signal, and achieve the effects of enhanced chirality, strong practicability, and easy detection.

Inactive Publication Date: 2021-09-28
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the circular dichroism signal of natural molecules is very weak at present. At this time, it is necessary to artificially design some artificial micro-nano structures and combine them with linkers to enhance their circular dichroism.

Method used

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Embodiment 1

[0032] In order to enhance the circular paramera of natural molecules, the embodiment of the present application provides a micro-nano optical structure, such as figure 1 As shown, including the first metal strip 1, the second metal strip 2, the third metal strip 3, and the fourth metal strip 4, and the second metal strip 2 is connected perpendicular to one end of the first metal strip 1, the third metal strip 3 The second metal strip 2 and the third metal strip 3 are located vertically connected to the other end of the first metal strip 1, and the third metal strip 3 is located in the same side direction of the first metal strip 1. The fourth metal strip 4 is perpendicular to the other end of the third metal strip 3, and the other end of the second metal strip 2 is perpendicular to the non-end position of the other end of the fourth metal strip 4.

[0033] The present application examples provide a microbial optical structure, which can produce a large circular chromaticity, and ...

Embodiment 2

[0037] For further explanation of the circular two color characteristics of the micro-nano optical structure, such as Figure 3 - Figure 6 As shown, the present embodiment discloses its absorption spectrum and a circular dichro spectrogram.

[0038] like figure 1 As shown, the present embodiment sets the micro-ratio optical structure thickness H = 40 nm; the first metal strip 1 length L 1 = Second metal strip 2 length L 2 = Third metal strip 3 length L 3 = Fourth metal strip 4 length L 4 = 100 nm; first metal strip 1 width w 1 = Second metal strip 2 width w 2 = Third metal strip 3 width w 3 = Fourth metal strip 4 width w 4 = 20 nm; the spacing D = 10 nm between the second metal strip 2 and the third metal strip 3.

[0039] like figure 2 For the charge distribution map of the present embodiment, from figure 2 In we can see that when the left-handed polarized light (LCP) is irradiated, the positive charge is mainly concentrated on the third metal strip 3, and the negative charge is m...

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Abstract

The present invention relates to the field of micro-nano optics technology, in particular to an optical micro-nano structure, comprising a first metal strip, a second metal strip, a third metal strip and a fourth metal strip, one end of the second metal strip is vertically connected to the first metal strip One end of the strip, the third metal strip is vertically connected to the non-end position of the other end of the first metal strip, the second metal strip and the third metal strip are located on the same side direction of the first metal strip, and one end of the fourth metal strip is vertically connected to the first metal strip The other end of the three metal strips and the other end of the second metal strip are vertically connected to the non-end position of the other end of the fourth metal strip. The micro-nano optical structure of the present invention has chirality and can produce large circular dichroism. Under the excitation of incident light, the surface generates an exciting electric field, which produces different absorption for left-handed polarized light and right-handed polarized light, forming a magnetic dipole Muons and electric dipoles produce different phases, thereby generating circular dichroism signals, which can be combined with natural molecules to enhance their chirality and facilitate detection.

Description

Technical field [0001] The present invention relates to the field of micro-nano-optical technologies, and more particularly to a micro-nano optical structure. Background technique [0002] The circular two-color spectrum (referred to as CD) is a method of using the most widely used protein secondary structure. It is a rapid, simple, and more accurate approach to protein conformation in the dilute solution. It can be determined in solution, closer to its physiological state. Moreover, the measurement method is fast and simple, and it is sensitive to conformation, so it is one of the main means of studying the secondary structure of the protein, and has been widely used in the conformation study of proteins. [0003] However, the circle of natural molecules currently is very weak. At this time, it is necessary to design some artificial microena structures to be combined with the linker to enhance its circular selection. Inventive content [0004] In response to the above problems,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/01G01N21/19B81B7/02B82Y20/00B82Y40/00
CPCB81B7/02B82Y20/00B82Y40/00G01N21/01G01N21/19
Inventor 张梓彦张中月白瑜景志敏李颖
Owner SHAANXI NORMAL UNIV
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