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PCM-based tunable metamaterial optical tweezers

A phase change material and metamaterial technology, applied in the field of tunable metamaterial optical tweezers

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

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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 phase change materials. The device has the characteristics of simple structure, easy operation, and large operating frequency tuning range.

Method used

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  • PCM-based tunable metamaterial optical tweezers
  • PCM-based tunable metamaterial optical tweezers
  • PCM-based tunable metamaterial optical tweezers

Examples

Experimental program
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Embodiment 1

[0019] First, a multilayer structure of N (N>=1) layers (metal layer 3-phase change material layer 4-metal layer 3-oxidation 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. 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)

[0022] 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 based on...

Embodiment 2

[0024] First, a multilayer structure of N (N>=1) layers (metal layer 3-phase change material layer 4-metal layer 3-oxidation layer 5) 2 is formed on a glass substrate 1 by a material growth process, as shown in the attached image 3 (a) shown.

[0025] Second, deposit SiO on the multilayer structure 2 2 film as a mask 6, as attached image 3 (b) shown.

[0026] 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.

[0027] 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)

[0028] Finally, the mask 6 is removed, and the phase-change 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 attach...

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Abstract

The invention provides a pair of PCM (phase-change material)-based tunable metamaterial optical tweezers. A PCM is introduced into a metamaterial based on a multilayer structure so as to change the dielectric coefficient of the PCM and generate an optical trapping force with changeable direction and strength, so that biomolecules in different sizes can be accurately grabbed and selected. According to the invention, the characteristic that the dielectric coefficient of the PCM changes along with the change of an additional electric field or temperature, so that the tunable function of the optical tweezers based on the metamaterial is achieved. The pair of optical tweezers has the characteristics of small size, large grabbing force, high stability and the like.

Description

technical field [0001] The invention relates to a tunable metamaterial optical tweezers based on a phase change 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 same...

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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