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Inclination nanorod-based circular dichroism structure

A circular dichroism and nanorod technology is applied in the field of circular dichroism structure to achieve the effects of being convenient for mass production, simple in structure and simple in production process

Inactive Publication Date: 2019-10-11
西安柯莱特信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For some optical structures provided in the prior art, the circular dichroism of circularly polarized light is generally within 10%, and rarely more than 10% of the optical structures, circular dichroism has a great deficiency

Method used

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  • Inclination nanorod-based circular dichroism structure
  • Inclination nanorod-based circular dichroism structure
  • Inclination nanorod-based circular dichroism structure

Examples

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Embodiment 1

[0027] The directions described in the examples: front and back are figure 1 In the y direction shown, left and right are figure 1 shown in the x-direction.

[0028] This embodiment provides a figure 2 The shown circular dichroic structure based on inclined nanorods includes a substrate layer 1, and the substrate layer 1 mainly plays the role of light transmission and support. Therefore, the substrate 5 can be made of silicon dioxide or glass with good light transmission made; as figure 1 As shown, the substrate layer 1 is provided with periodically arranged structural units 2, and the structural units 2 include first metal nanorods 3 and second metal nanorods 4; the back side of the first metal nanorods 3 is connected to The front sides of the second metal nanorods 4 are adjacent; the first metal nanorods 3 are inclined to the left, and the second metal nanorods 4 are inclined to the right, so that the first metal nanorods 3 and the second An included angle is formed bet...

Embodiment 2

[0036] On the basis of Example 1, such as image 3 As shown, the period of arrangement of the structural unit 2 is 200nm; and the dimensions of the first metal nanorod 3 and the second metal nanorod 4: length×width×height are 40nm×40 nm×60nm, and the thickness of the substrate layer 1 is 10nm The gap between the first metal nanorod 3 and the second metal nanorod 4 is 20nm; the angle formed by the first metal nanorod 3 and the second metal nanorod 4 is 60°; the wavelength of the incident light is between 400nm and 1200nm When the circular dichroism display diagram, it can be seen from the figure that when the wavelength of the incident light is 740nm, the circular dichroism is the most prominent, and the best circular dichroism can reach 0.06; when the wavelength of the incident light is 600nm, There is also a peak of circular dichroism, and the circular dichroism can be only about 0.03. The circular dichroism of the circular dichroism structure based on inclined nanorods is re...

Embodiment 3

[0038] On the basis of Example 1, such as Figure 4 As shown, the period of arrangement of the structural unit 2 is 200nm; and the dimensions of the first metal nanorod 3 and the second metal nanorod 4: length×width×height are 40nm×40 nm×60nm, and the thickness of the substrate layer 1 is 10nm The gap between the first metal nanorod 3 and the second metal nanorod 4 is 0nm; the angle formed by the first metal nanorod 3 and the second metal nanorod 4 is 20°; the wavelength of the incident light is between 400nm and 1200nm When the circular dichroism display diagram, it can be seen from the figure that when the wavelength of the incident light is 840nm, the circular dichroism is the most prominent, and the best circular dichroism can be close to 0.13; when the wavelength of the incident light is 600nm, There is also a peak of circular dichroism, and the circular dichroism can be only about 0.03. The circular dichroism of the circular dichroism structure based on inclined nanorods...

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Abstract

The invention relates to an inclination nanorod-based circular dichroism structure. The inclination nanorod-based circular dichroism structure comprises a substrate layer, wherein structural units arearranged on the substrate layer and are periodically arranged, each structural unit comprises a first metal nanorod and a second metal nanorod, a rear side surface of the first metal nanorod is adjacent to a front side surface of the second metal nanorod, the first metal nanorod inclines towards a left side, and the second metal nanorod inclines towards a right side. The inclination nanorod-basedcircular dichroism structure is simple, is simple in fabrication process and has good circular dichroism, production and fabrication on a large scale are convenient, the circular dichroism can be improved by 10-20%, so that the circular dichoism is remarkable, and a foundation is laid for application of the circular dichoism; and more importantly, the two metal nanorod can incline at different angles by the inclination nanorod-based circular dichroism structure, so that a clamping degree between the two metal nanorod is adjustable, and the adjustment of the circular dichroism is achieved.

Description

technical field [0001] The invention belongs to the technical field of optical structures, and in particular relates to a circular dichroism structure based on inclined nanorods. Background technique [0002] The principle of circularly polarized light is that when the two beams have the same frequency, the vibration directions are perpendicular to each other, and there is a phase relationship of (2n+1 / 2)π, the two plane polarized lights can be superimposed to obtain circularly polarized light; when the linearly polarized light is incident vertically For the quarter-wave plate, if the angle between the vibration direction of the linearly polarized light and the optical axis of the quarter-wave plate is plus or minus 45°, the light emitted from the quarter-wave plate is circularly polarized light. [0003] The absorption and circular dichroism of circularly polarized light have attracted many researchers to study it. How to improve the absorption and circular dichroism of cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02B27/28
CPCG02B5/30G02B27/28
Inventor 不公告发明人
Owner 西安柯莱特信息科技有限公司
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