Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for regulating and controlling LPFG sensitivity by polymethacrylic acid

A polymethacrylic acid and methacrylic acid technology, which is applied in the measurement of phase influence characteristics, instruments, optical waveguides and light guides, etc., can solve the problem of low response sensitivity of low-refractive index media, and achieve the effect of stable growth of thin films.

Active Publication Date: 2021-04-27
BIOLOGY INST OF SHANDONG ACAD OF SCI
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, in order to solve the shortcoming that LPFG has low response sensitivity to low refractive index media, the present invention provides a method for regulating the sensitivity of LPFG by polymethacrylic acid

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
  • Method for regulating and controlling LPFG sensitivity by polymethacrylic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]The mixed solution of 5 ml dimethyl sulfoxide was formulated with 0.86 g of 2-methacrylic acid, 1.98 g of polyethylene glycol dimethyl methacrylate and 0.2 g of 2,2'-azobutyronitrile, stirred well, will The solution was poured into a liquid reaction tank that fixed the long period of the raster, and the reaction temperature was transferred to 50 ° C, control the reaction time, stop the reaction time to stop the reaction time when the sensitivity of the refractive index reaches the desired request, and fully rinsed with secondary distilled water.

Embodiment 2

[0040]0.06 mol of 2-methacrylic acid and 0.04 mol of polyethylene glycol dimethyl methacrylate were prepared into 10 ml of tetrahydrofuran solution, and 0.001 mol of 2,2'-azo diisobutyronitrile was added, and the stirring was uniform. In the liquid reaction tank of the fixed long period grating, the reaction temperature was transferred to 60 ° C, and the reaction time was controlled, so that the long period grating stopped the reaction when the sensitivity of the refractive index reached the required requirements, and fully rinsed with secondary distilled water .

Embodiment 3

[0042]3.44 g of 2-methacrylic acid, 3.96 g of polyethylene glycol dimethacrylate is compounded into 5 mL dimethyl sulfoxide solution, and two solutions are mixed, and then 0.3 g of 2,2'-azo two different. Nitrile, stirring makes it uniform. In the reaction tank of the formulated solution, the temperature of the solution was adjusted to 80 ° C, control the reaction time, so that the long period grating on the sensitivity of the refractive index reached the required requirements, and used two The distilled water is fully rinsed.

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
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for regulating and controlling LPFG sensitivity by polymethylacrylic acid, which controls the thickness of a polymethylacrylic acid nano film on the surface of LPFG by controlling the concentration, reaction time and reaction temperature of a reaction reagent, thereby accurately regulating and controlling the sensitivity range of LPFG to different refractive indexes and realizing high-sensitivity regulation and control of LPFG to different refractive indexes. Expensive instruments and equipment are not needed, the operation process is simple and convenient, and the method is expected to be widely applied to the field of LPFG biochemical molecule detection.

Description

Technical field[0001]The present invention relates to the field of long period grating detection, and more particularly to a method involving a polymethyl methacrylic acid to regulate LPFG sensitivity.Background technique[0002]Long Period Fiber Grating, LPFG is a passive optical sensing device having a sensitive performance of ambient refractive index, has been tried to measure the liquid refractive index, and the long period grating has a high refractive index. Sensitivity. However, the naked long period grating typically has a high sensitivity to the environmental refractive index of 1.4000 to 1.453, and the sensitivity of the ambient medium having a refractive index of 1.4 is very low. Since most of the refractive index of the detected environmental medium is between 1.0-1.4 (such as the aqueous solution refractive index near 1.333), this defect inherentially inherently limits its application in practice.[0003]In recent years, various membrane modification techniques and various ...

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 Applications(China)
IPC IPC(8): G02B6/02G01N21/41
CPCG02B6/02123G02B6/02076G01N21/41
Inventor 李秋顺杨艳马耀宏杨俊慧蔡雷孟庆军刘庆艾王丙莲李大海
Owner BIOLOGY INST OF SHANDONG ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com