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Tunable metamaterial optical tweezer based on liquid crystal material

A technology of liquid crystal material layer and metamaterial, applied in optics, nonlinear optics, instruments, etc.

Active Publication Date: 2012-10-17
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned problems of tunable optical tweezers, the present invention provides a tunable metamaterial optical tweezers based on liquid crystal material, which has the characteristics of simple structure, easy operation, and large operating frequency tuning range.

Method used

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  • Tunable metamaterial optical tweezer based on liquid crystal material
  • Tunable metamaterial optical tweezer based on liquid crystal material
  • Tunable metamaterial optical tweezer based on liquid crystal material

Examples

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Embodiment 1

[0019] First, an N (N>=1) layer multilayer structure (metal layer 3-liquid crystal material layer 4-metal layer 3-oxide layer 5) 2 is formed on a glass substrate 1 by a material growth process, as shown in the attached figure 2 (a) shown.

[0020] Second, deposit SiO on the multilayer structure 2 2 film as a mask 6, as attached figure 2 (b) shown.

[0021] Then, the designed periodic hole matrix sample is transferred to the mask through the mask process, as shown in the attached figure 2 (c) shown. Among them, the structure design can adopt algorithms such as finite time domain difference method and finite element method.

[0022] Then, through an etching process, a periodic hole matrix 7 is prepared on the 2 material, as shown in the attached figure 2 as shown in (d)

[0023] Finally, the mask 6 is removed to obtain the tunable metamaterial optical tweezers 8, as shown in the attached figure 2 (e) shown. Among them, the tunable metamaterial optical tweezers9 base...

Embodiment 2

[0025] First, an N (N>=1) layer multilayer structure (metal layer 3-liquid crystal material layer 4-metal layer 3-oxide layer 5) 2 is formed on a glass substrate 1 by a material growth process, as shown in the attached image 3 (a) shown.

[0026] Second, deposit SiO on the multilayer structure 2 2 film as a mask 6, as attached image 3 (b) shown.

[0027] Then, the designed periodic hole matrix sample is transferred to the mask through the mask process, as shown in the attached image 3 (c) shown. Among them, the structure design can adopt algorithms such as finite time domain difference method and finite element method.

[0028] Then, through an etching process, a periodic hole matrix 7 is prepared on the 2 material, as shown in the attached image 3 as shown in (d)

[0029] Finally, the mask 6 is removed, and liquid crystal material 4 is injected into the hole matrix 7 to seal the holes to obtain a tunable metamaterial optical tweezers 8, as shown in the attached im...

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Abstract

The invention provides a tunable metamaterial optical tweezer based on liquid crystal material. By introducing the liquid crystal material in the multilayer structure-based metamaterial, the birefringence and the dielectric coefficient of the liquid crystal material are changed, and an optical trapping force variable in direction and size is generated, thus, accurate capturing and selection to the biomolecules in different sizes are realized. According to the invention, based on the character that the birefringence and the dielectric coefficient of the liquid crystal material vary with the change of the external electric field or the temperature, the tunable function of the metamaterial-based optical tweezer is realized. The optical tweezer has the characteristics of small volume, high capturing force, high stability and so on.

Description

technical field [0001] The invention relates to a tunable metamaterial optical tweezers based on a liquid crystal material, which can be applied to the fields of life science and detection of tiny biomolecules. Background technique [0002] Since Ashkin et al first proposed the theory of optical tweezers in 1980, optical tweezers technology has made significant progress in many scientific fields. Because optical tweezers can perform non-invasive and non-contact simple manipulation of micro-nano-scale biomolecules, its application in the field of life sciences has attracted widespread attention. Optical trapping force is one of the important components of optical tweezers, and its characteristics depend on the field intensity gradient of light. How to construct the optical trap force and realize the optical tweezers technology is currently a research hotspot in this field. In 2002, Erikesen et al. used phase contrast technology to generate optical trapping force. In the sa...

Claims

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Application Information

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IPC IPC(8): G02F1/01G21K1/00
Inventor 曹暾
Owner DALIAN UNIV OF TECH
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