Unlock instant, AI-driven research and patent intelligence for your innovation.

A method of making cholesteric liquid crystal polymer sheet

A cholesteric liquid crystal and polymer technology, applied in instruments, polarizing elements, optics, etc., can solve the problems of restricting industrialization and integration applications, reducing production efficiency, and not being able to achieve continuous mass production

Active Publication Date: 2020-04-10
XIAMEN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, none of the above two types of methods can achieve continuous mass production, which greatly reduces production efficiency and limits its industrialization and integrated application.

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 method of making cholesteric liquid crystal polymer sheet
  • A method of making cholesteric liquid crystal polymer sheet
  • A method of making cholesteric liquid crystal polymer sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method of making a cholesteric liquid crystal polymer (PCLC) sheet, comprising:

[0034] Step (1) Fabricate a microfluidic centrifugal chip with a decreasing depth of a centrifugal channel, the chip includes a substrate and a cover, a liquid storage tank is arranged in the center of the substrate, and a centrifugal channel with decreasing depth from inside to outside is arranged on the periphery of the substrate. The edge of the sheet is provided with a sample outlet that is connected to the centrifugal channel, and the center of the cover sheet is provided with a sample inlet that can be connected to the liquid storage tank; the centrifugal channel is an annular channel surrounding the liquid storage tank, or, the liquid storage tank It is a linear channel that is centered and radially distributed from the center to the periphery, or a spiral channel centered on the reservoir.

[0035] Step (2) using a droplet preparation device to prepare PCLC droplets of uniform si...

Embodiment 2

[0056] The difference between it and the first embodiment is that: the specific implementation method of making the substrate 1.6 in step 1-1 is: selecting a circular quartz glass plate with a diameter of 50 cm and a thickness of 2 cm as the substrate 1.6, and using inductively coupled plasma etching Technology (ICP) etching technology, a channel with constant gradient depth changes is etched on the quartz glass substrate 1.6. The specific experimental process: first wrap the substrate 1.6 with anti-corrosion tape, and then use a laser lithography machine on the glass. A ring pattern is engraved on the tape on one side of the board, such as figure 2 As shown, the width of the outermost ring of the iso-depth ring pattern is about 5cm, the width of the other rings is about 3cm, and the diameter of the three support columns in the outermost ring is about 2cm; put the quartz substrate into the ICP-2B etching machine , with F 12 For etching gas, RF 1 Power is 300w, RF 2 The pow...

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for making a cholesteric-phase liquid crystal polymer sheet. With the microfluidic centrifugation technology, batch continuous PCLC (cholesteric liquid crystal polymer) sheet production is realized; and on the basis of the microfluidic technology, micro fluid can be manipulated, processed and controlled in a micro channel. The method has advantages of simple process, low loss, integrated miniaturization, fast response and the like. The uncontrollability of the shape of the sheet is avoided; and defects of poor mold reusability and low efficiency are overcome.

Description

technical field [0001] The invention relates to the field of liquid crystal optics, in particular to a method for making a cholesteric liquid crystal polymer sheet. Background technique [0002] Cholesteric liquid crystal polymer (PCLC) flakes were developed in the 1990s, and their good properties were used to replace cholesteric liquid crystal and PCLC films with smaller molar mass. Cholesteric liquid crystal molecules are susceptible to the action of electric or magnetic fields, so that controllability of optical properties can be achieved. Since cholesteric liquid crystal molecules are extremely sensitive to temperature, a small temperature change can change their properties, and even cause a phase transition to a solid or liquid state. If liquid crystal molecules are incorporated into long polymer chains to form PCLC films, their temperature sensitivity can be reduced. In view of the extremely strong viscosity characteristics of PCLC films, a good alignment effect can ...

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): G02B5/30
CPCG02B5/3016
Inventor 陈鹭剑葛亚豪李森森杨朝勇李星锐
Owner XIAMEN UNIV