Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A chiral optical structure of a dual-structure combined metal nanofilm

A metal nanometer and optical structure technology, applied in optics, optical components, instruments, etc., can solve the problems of poor detection effect and inconspicuous circular dichroism signal.

Active Publication Date: 2021-06-15
安徽精一门科技发展有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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 poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A chiral optical structure of a dual-structure combined metal nanofilm
  • A chiral optical structure of a dual-structure combined metal nanofilm
  • A chiral optical structure of a dual-structure combined metal nanofilm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] See figure 1 , figure 1 Schematic diagram of the chiral optical structure of the dual-structure combined metal nanofilm provided by the embodiment of the present invention. The chiral optical structure includes a metal film 21 , a basic U-shaped slit 22 on the metal film 21 , and an enhanced C-shaped slit 23 on the metal film 21 , and is arranged on one side of the basic U-shaped slit.

[0025] The shape of the metal film 21 is a rectangle with a first side length and a second side length, the length of the first side length is Px, and the length range is 400-1000 nm; the length of the second side length is Py, and the length range is 400-1000 nm ; Px and Py can be equal or not. The thickness of the metal film 21 ranges from 20 nm to 100 nm, and the material of the metal film 21 is a good conductor, including gold, silver, copper, aluminum and other metal materials.

[0026] The basic U-shaped seam 22 includes three arms, which are respectively the first left arm, th...

Embodiment 2

[0032] See figure 2 , figure 2 The principle diagram of circular dichroism generated by the chiral optical structure provided for the embodiment of the present invention. When a beam of left circularly polarized (LCP) is incident from the front of the chiral optical structure, after passing through the chiral optical structure, the transmittance of the received left circularly polarized light is T--, when a beam of right circularly polarized Light (rightcircularly polarized, RCP) is incident from the front of the chiral optical structure, and after passing through the chiral optical structure, the transmittance of the received right-handed polarized light is T++, where the subscript "--" means left-handed polarized light, "++" means right-handed polarized light, then the circular dichroism of the chiral optical structure can be expressed as:

[0033] CD=T++-T--

[0034]The transmittance of left-handed polarized light and right-handed polarized light after passing through ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a chiral optical structure of a double-structure combined metal nano-thin film, comprising: a metal film, a basic U-shaped slit located on the metal film, and a base U-shaped slit located on the metal film and juxtaposed with the basic U-shaped slit Reinforce the C-shaped seam, and set it on one side of the basic U-shaped seam. In the embodiment of the present invention, by adding a reinforced C-shaped slit to the metal film containing the basic U-shaped slit, the current flow direction on the original U-shaped metal film is changed. On the basis of the existence of an electric dipole, a magnetic field appears at the transverse slit. Dipoles, circular dichroism is significantly enhanced due to the combined action of electric and magnetic dipoles.

Description

technical field [0001] The invention belongs to the field of optical devices, in particular to a dual-structure combined metal nano-film chiral optical structure. Background technique [0002] Chirality refers to the property that a structure and its mirror image cannot overlap. Chiral structures are ubiquitous in nature, such as proteins, glycosylation, and DNA and other biomacromolecules. Chirality plays a key role in biochemistry and life evolution. According to its structural characteristics, chirality can be divided into: intrinsic chirality and extrinsic chirality. Intrinsic chirality refers to the chirality of the structure itself, and extrinsic chirality refers to the chirality formed by the structure and incident light. [0003] Circular Dichroism (CD) is a very important method to study chiral compounds. In the study of chiral molecular asymmetry, when left-handed circularly polarized light and right-handed circularly polarized light are incident, chiral material...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28G02B5/30
CPCG02B5/30G02B27/286
Inventor 张亮左瑜
Owner 安徽精一门科技发展有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com