Quartz crystal oscillator sensor with characteristic of selective adsorption modification on metal films

A technology of selective adsorption and quartz crystal oscillator, applied in the direction of material absorption and weighing, can solve the problems of thermal control performance degradation, easy deposition on the surface of the device, and optical performance degradation.

Inactive Publication Date: 2015-04-22
TIANJIN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For example, the pollution of the space station is mainly composed of organic substances. When these molecular pollutants are deposited on the sensitive optical components of the space station, solar cells and thermal control coatings and other pollution-sensitive components, it will lead to a decrease in optical performance and a decrease in the output of solar panels. and thermal performance degradation
When pollution is deposited in the manned cabin, it will also have an impact on the astronaut's body, affecting the completion of the mission
When the spacecraft is conducting a vacuum thermal test, the outgassing products of non-metallic materials used for satellites are easy to deposit on the surface of the device and even enter the interior of the satellite through "creeping oil", which affects the functions of thermal control coatings and solar cells. It can lead to irreparable losses such as circuit short circuit, low pressure discharge, and component burnout

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
  • Quartz crystal oscillator sensor with characteristic of selective adsorption modification on metal films
  • Quartz crystal oscillator sensor with characteristic of selective adsorption modification on metal films
  • Quartz crystal oscillator sensor with characteristic of selective adsorption modification on metal films

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: The quartz crystal oscillator sensor modified by selective adsorption of the metal film of the present invention is obtained according to the following method:

[0019] (1) The quartz wafer is placed in an evaporation machine, and the metal film layer electrodes (2) and (3) are plated by a mask method. According to requirements, gold is selected as the material of the electrode film layer. Other metal materials can also be vapor-deposited as electrodes as required.

[0020] (2) Prepare a saturated solution of β-cyclodextrin in a water bath at 90° C., and stir it with magnetic force for 30 minutes to obtain a completely dissolved aqueous solution of β-cyclodextrin. Coat the β-cyclodextrin film layer on the electrode area by the spin coating method, absorb the above-mentioned β-cyclodextrin aqueous solution with a straw, and drop it on the electrode area of ​​the quartz crystal oscillator, and the dripping speed is 1ml / min. Place the above-mentioned quartz...

Embodiment 2

[0024] Embodiment 2: The quartz crystal oscillator sensor modified by selective adsorption of the metal film of the present invention is obtained according to the following method:

[0025] (1) The quartz wafer is placed in an evaporation machine, and the metal film layer electrodes (2) and (3) are plated by a mask method. According to requirements, silver is selected as the electrode film material.

[0026] (2) Prepare a saturated solution of β-cyclodextrin in a water bath at 70° C., and stir it by magnetic force for 30 minutes to obtain a completely dissolved aqueous solution of β-cyclodextrin. The β-cyclodextrin film layer was coated on the electrode area by dipping and pulling method, and the pulling speed was 1.5 cm / min. Put the above-mentioned quartz crystal vibrating plate horizontally into a closed desiccator, and then cool and dry naturally to form 1 μm β-cyclodextrin film layers (4) and (5) on the surface of the electrode area of ​​the quartz crystal vibrating plate...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention discloses a quartz crystal oscillator sensor with the characteristic of selective adsorption modification on metal films. The quartz crystal oscillator sensor comprises a housing and a wafer base, wherein a quartz wafer is arranged inside the housing, the front surface and the back surface of the quartz wafer are respectively provided with a metal film layer electrode, the metal film layer electrode is connected with an electrode leading-out wire, a selective adsorption film layer is coated on the surface of the metal film layer electrode, the selective adsorption film layer comprises a beta-cyclodextrin film layer with a thickness of 0.2-1 [mu]m, the areas of the selective adsorption film layers positioned on the front surface and the back surface of the quartz wafer are equal, the housing is provided with pores or meshes, and the housing is packaged on the wafer base. According to the present invention, the hydrophobic cavity of the beta-cyclodextrin molecule can wrap organic pollution gases, van der Waals force, hydrophobic interactions, intermolecular matching and other effects are mainly utilized to form the host-guest inclusion complex, and the size difference between the phthalate and the siloxane molecules is utilized so as to achieve the selective adsorption on the spatial pollutant phthalate.

Description

technical field [0001] The invention relates to a space pollution monitoring device, especially a quartz crystal sensor with selective adsorption function for organic gas pollution (mainly phthalates and siloxanes) in the space environment. Background technique [0002] Pollution is one of the factors that the space environment has a serious impact on spacecraft, and it is a very important issue for high-reliability and long-life spacecraft. Space pollutants will have an important impact on the performance of spacecraft optics, thermal control coatings and other devices. [0003] For example, the pollution of the space station is mainly composed of organic substances. When these molecular pollutants are deposited on the sensitive optical components of the space station, solar cells and thermal control coatings and other pollution-sensitive components, it will lead to a decrease in optical performance and a decrease in the output of solar panels. and degradation of thermal p...

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 & AuthorityApplications(China)
IPC IPC(8): G01N5/02
Inventor魏强李薇许伟泽刘浩锐
OwnerTIANJIN UNIV