Trace explosive and poison detector and using method thereof

A technology for detectors and explosives, applied in the field of trace explosives and drug detectors, can solve the problems of only one-time use, difficult recycling, gas detection, etc., and achieve the effect of low cost, super high sensitivity and simple structure

Inactive Publication Date: 2018-05-29
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is still difficult to directly detect traces of gaseous molecular gases emitted from the surface of tightly wrapped objects; and another problem is that it is difficult to recycle, because once the surface of th

Method used

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  • Trace explosive and poison detector and using method thereof
  • Trace explosive and poison detector and using method thereof
  • Trace explosive and poison detector and using method thereof

Examples

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Example Embodiment

[0065] Example 1

[0066] 1. Cleaning the substrate 3. Take a 2-inch silicon wafer, use acetone, ethanol, and deionized water for ultrasonic cleaning for ten minutes, and dry it in a nitrogen stream. figure 2 Shown.

[0067] 2. Lithography process. A layer of photoresist was spin-coated on the 3 sides of the substrate using the KW-5 type homogenizer of the Institute of Microelectronics of the Chinese Academy of Sciences, and the photoresist model used was AR-P3510T positive photoresist from Germany Allresist. The gluing process is to rotate at a low speed of 800 rpm for 10 seconds; then rotate at a high speed of 3000 rpm for 50 seconds. Remove the substrate, place it on a 120℃ electric hot plate and bake for 60 s. Take out the substrate 3, and use the MA6 UV lithography machine of German SUSS company to photoetch the substrate 3. The total size of the photoetching board is 5cm×5cm square array, and the photoetching plate material is a quartz glass plate coated with a square Cr ...

Example Embodiment

[0080] Example 2

[0081] 1. Cleaning the substrate 3. Take a 2-inch quartz wafer, wash it with acetone, ethanol, and deionized water sequentially for ten minutes, and dry it in a nitrogen stream.

[0082] 2. Lithography process. A layer of photoresist was spin-coated on the surface of the substrate 3 using the KW-5 type homogenizer of the Institute of Microelectronics of the Chinese Academy of Sciences, and the photoresist model used was AR-P3510T positive photoresist from Germany Allresist Company. The gluing process is to rotate at a low speed of 800 rpm for 10 seconds; then rotate at a high speed of 3000 rpm for 50 seconds. Remove the substrate 3, place it on a 120℃ electric hot plate and bake it for 60 s. Take out the substrate 3, and use the MA6 UV lithography machine of Suss Company in Germany to perform photoetching on the substrate 3. The total size of the photoetching board is 5cm×5cm square array, and the material of the photoetching board is a quartz glass plate coat...

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Abstract

The invention belongs to the technical field of public safety, and particularly discloses a trace explosive and poison detector and a using method thereof. The trace explosive and poison detector comprises a miniature vacuum pump, a vacuum box, a heating table, a laser Raman spectrometer and a gas sensor. The gas sensor comprises a substrate and a self-curled micron tube and the self-curled microntube is arranged on the substrate and is modified by nanometer metal particles; multilayer thin films are prepared by the aid of vacuum film coating equipment and then are annealed and self-curled atthe appropriate temperatures to obtain the self-curled micron tube. The trace explosive and poison detector and the method have the advantages that the gas sensor is arranged on the vacuum box and the heating table when the trace explosive and poison detector is used for detecting trace explosive and poison, air in the vacuum box is exhausted by the miniature vacuum pump, trace gaseous moleculesin environments with the explosive, the poison and the like can be sucked, characteristic Raman peaks of the gaseous molecules can be detected by the laser Raman spectrometer, and accordingly the explosive, the poison and the like can be detected; residual gas can be heated, vacuumized and removed, circulation measurement can be carried out, or the trace explosive and poison detector can be idle for standby application; the trace explosive and poison detector is exquisite in structure, ultrahigh in sensitivity and applicable to the field of public safety of anti-terrorism, reconnaissance and the like.

Description

technical field [0001] The invention belongs to the technical field of public safety, and in particular relates to a trace explosive and drug detector and a using method. Background technique [0002] With the rapid development of my country's economy, the field of public security has received more and more attention. From airports, stations to squares, large gatherings, etc., it is necessary to check suspicious packages and people to detect possible hidden bombs, drugs and dangerous items. The usual way now is to use police dogs to sniff and use ion mobility spectroscopy to detect and other methods. Among them, police dog detection uses the excellent nasal sensitivity of police dogs to sniff traces of bombs or drugs and other dangerous substances or gas molecules emitted. For tightly packaged dangerous goods, the concentration of trace gaseous molecules emitted is extremely low, and it is difficult for police dogs to sniff them out. Ion mobility spectroscopy technology co...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N21/65
CPCG01N21/73G01N21/658
Inventor 崔旭高黄高山梅永丰
Owner FUDAN UNIV
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