Discharge properties of integrated system of ambient ion source and micro air pump based on needle-to-cylinder structure

LI Hua; WEI Chang-yan; ZENG De-cha; CHEN Zhen-cheng

doi:10.3788/OPE.20142206.1531

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Discharge properties of integrated system of ambient ion source and micro air pump based on needle-to-cylinder structure

更新时间：2020-08-13

- Discharge properties of integrated system of ambient ion source and micro air pump based on needle-to-cylinder structure
- Optics and Precision Engineering Vol. 22, Issue 6, Pages: 1531-1537(2014)
- 作者机构：
  
  桂林电子科技大学生命与环境科学学院,广西桂林,541004
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142206.1531
  CLC： TH83
- Received：05 December 2013，
  
  Revised：10 January 2014，
  
  Published：25 June 2014
- 稿件说明：
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李华, 韦昌严, 曾德查等. 针-柱结构敞开式离子源和微型气泵集成系统的放电特性[J]. 光学精密工程, 2014,22(6): 1531-1537

LI Hua, WEI Chang-yan, ZENG De-cha etc. Discharge properties of integrated system of ambient ion source and micro air pump based on needle-to-cylinder structure[J]. Editorial Office of Optics and Precision Engineering, 2014,22(6): 1531-1537
李华, 韦昌严, 曾德查等. 针-柱结构敞开式离子源和微型气泵集成系统的放电特性[J]. 光学精密工程, 2014,22(6): 1531-1537 DOI： 10.3788/OPE.20142206.1531.

LI Hua, WEI Chang-yan, ZENG De-cha etc. Discharge properties of integrated system of ambient ion source and micro air pump based on needle-to-cylinder structure[J]. Editorial Office of Optics and Precision Engineering, 2014,22(6): 1531-1537 DOI： 10.3788/OPE.20142206.1531.

摘要

设计了一种小型针-柱电晕放电结构，实现了敞开式离子源和微型气泵的系统集成。通过数码相机拍摄的针-柱放电图像和示波器记录的特里切尔放电波形，验证了该针-柱结构在没有外界气流、间隙仅2 mm的实验条件下实现了稳定的电晕放电。对针-柱结构电晕放电特性进行了研究，讨论了放电电压、镇流电阻、柱直径大小、针-柱间距等参数对针-柱电晕放电的影响，通过伏安特性曲线分析得出在放电电压为-3 800 V、镇流电阻为10 MΩ、柱直径为4 mm、间距为2 mm的实验条件下，产生的离子风气体流速最大（采用testo 405-V1风速仪测得最大气体流速为1.15 m/s）。该针-柱结构可采用微机电系统（MEMS）工艺加工实现，有望应用于质谱仪、离子迁移谱、高场非对称波形离子迁移谱等便携式分析仪器中，实现敞开式离子源和微型气泵的双重功能。

Abstract

A micro needle-to-cylinder corona discharge structure was designed to integrate an ambient ion source and a micro air pump. By needle-to-cylinder discharge photos and Trichel discharge waveform recorded with a digital camera and an oscilloscope respectively

it verified that the stable corona discharge of needle-to-cylinder structure could be realized without external air flows and with only 2 mm distance between need and cylinder. The corona discharge characteristics of the needle-to-cylinder structure were researched and the influence of experimental parameters

like discharge voltages

ballasting resistor

the diameter of cylinder and the distance between the needle and cylinder

on the corona discharge was discussed. By analysis of the volt-ampere characteristic curves

it shows that the max velocity ionic wind can be gotten in a discharge voltage of -3 800 V

a discharge resistor of 10 MΩ

a cylinder diameter of 4 mm

and the distance between the need and cylinder of 2 mm. Moreover

the max air flow velocity is 1.15 m/s measured by the test 405-V1 anemometer. The needle-to-cylinder structure can be fabricated by Micro-electro-mechanical System(MEMS) technology

and may be used in the portable analytical instruments to realize the double functions of ambient ion source and micro air pump

such as mass spectrometry

ion mobility spectrometry

and high-field asymmetric waveform ion mobility spectrometry.

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Keywords

references

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Design and experiment analysis for micro needle-cylinder discharge chip integrated by open-type ion source and micro pump

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