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Method for preparing visible pattern under polarized light

A pattern and purpose technology, applied in the field of preparing patterns visible under polarized light, can solve problems that need to be studied, and achieve the effects of wide application, low requirements for experimental conditions, and simple process flow

Inactive Publication Date: 2018-05-11
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the method of using liquid crystals to construct potentially responsive smart surfaces and then prepare patterns visible under polarized light remains to be studied.

Method used

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  • Method for preparing visible pattern under polarized light
  • Method for preparing visible pattern under polarized light
  • Method for preparing visible pattern under polarized light

Examples

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Embodiment 1

[0043] According to the method for preparing a pattern visible under polarized light of the present invention, a pattern visible under polarized light is prepared. Including: using the emulsification method to prepare 4'-n-pentyl-4-cyanobiphenyl (5CB) liquid crystal droplets whose surface is modified by DNA-amphiphile molecules, and then using micro-contact printing technology to combine 12-mercaptododecanoic acid with DNA The combination with the gold substrate is realized through the sulfur-gold bond, and finally, the liquid crystal droplets with the DNA segment complementary to the DNA segment on the substrate are assembled on the surface of the gold substrate through the principle of complementary base pairing of DNA. The schematic diagram is shown in figure 1 . This method can realize the functions of visualization of substrate patterns and selective display of substrate information, combining patterned substrates with liquid crystal materials, and providing new ideas and...

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Abstract

The invention discloses a method for preparing a visible pattern under polarized light and discloses a method for preparing a DNA patterned substrate for the first time. The method comprises: a substrate, a PDMS stamp with the patterned surface, a 12-sulfanyldodecanoci acid solution and a DNA combined with the surface of the substrate are provided respectively; a processed PDMS stamp is obtained;the processed PDMS stamp is in contact with the surface of the substrate to obtain a hydrophilic substrate with a patterned surface; and a DNA pattern substrate having the DNA surface layer is obtained. With the method disclosed by the invention, the DNA patterned substrate having the DNA surface layer can be prepared; and then a DNA liquid crystal drop that is prepared by using DNA amphiphile with at least 12-bp sequence complementation with the DNA of the DNA surface layer of the DNA pattern substrate is in contact with the DNA pattern substrate, so that a target pattern is displayed on thesurface of the DNA pattern substrate under polarized light.

Description

technical field [0001] The present invention relates to the field of biotechnology, specifically to the field of patterned embossing of liquid crystal droplets, and more specifically to a method for preparing patterns visible under polarized light. Background technique [0002] Under external stimuli, the change of liquid crystal orientation can be transmitted and amplified to the micron scale range, and the accompanying optical signal change can be used for chemical and biological detection. In the presence of the liquid crystal droplet to be detected, an optical microscope can be used to observe the change of liquid crystal orientation so as to achieve the purpose of detection. How to enable liquid crystals to realize stimulus response, detection, anti-counterfeiting and even information display functions, which have important application significance, is a scientific problem that requires long-term exploration and research. [0003] At present, the method of using liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/00
CPCG01D21/00
Inventor 杨忠强李妍田艺张懿旸杨秀秀
Owner TSINGHUA UNIV
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