超微量点胶方法与实验

张勤; 徐策; 徐晨影; AOYAMA Hisayuki

doi:10.3788/OPE.20132108.2071

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超微量点胶方法与实验

微纳技术与精密机械 | 更新时间：2020-08-12

- 超微量点胶方法与实验
- Approach and experiment of Ultra-micro dispensing
- 光学精密工程 2013年21卷第8期页码：2071-2078
- 作者机构：
  
  1. 华南理工大学机械与汽车工程学院,广东广州,510641
  2. 日本东京电气通信大学机械工程与智能系统系东京,日本,182-8585
- 作者简介：
- 基金信息：
  
  广东省国际合作();广东省教育厅高校国际科技合作创新平台();哈尔滨工业大学机器人技术与系统国家重点实验室开放基金()
- DOI：10.3788/OPE.20132108.2071
  中图分类号： TH706
- 收稿日期：2013-01-29，
  
  修回日期：2013-03-25，
  
  网络出版日期：2013-08-20，
  
  纸质出版日期：2013-08-15
- 稿件说明：
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张勤徐策徐晨影 AOYAMA Hisayuki. 超微量点胶方法与实验[J]. 光学精密工程, 2013,21(8): 2071-2078

ZHANG Qin XU Ce XU Chen-ying AOYAMA Hisayuki. Approach and experiment of Ultra-micro dispensing[J]. Editorial Office of Optics and Precision Engineering, 2013,21(8): 2071-2078
张勤徐策徐晨影 AOYAMA Hisayuki. 超微量点胶方法与实验[J]. 光学精密工程, 2013,21(8): 2071-2078 DOI： 10.3788/OPE.20132108.2071.

ZHANG Qin XU Ce XU Chen-ying AOYAMA Hisayuki. Approach and experiment of Ultra-micro dispensing[J]. Editorial Office of Optics and Precision Engineering, 2013,21(8): 2071-2078 DOI： 10.3788/OPE.20132108.2071.

摘要

针对微装配/密封工程对用胶量超微化（1 pL）的需求，提出了一种既适用于接触式点胶，也适用于非接触式点胶的超微量点胶方法。采用移液针穿过装有胶液的玻璃微管，在移液针先端吸附微小胶滴，当移液针先端靠近点胶面时，其先端吸附的微小胶滴与点胶面接触，移液针离开点胶面后，微小胶滴的一部分残将留在点胶面上，实现超微量点胶。通过匹配点胶的参数，实现点胶量的控制。该方法可以适用于任何黏度（1~3.5105 cP）的胶液、任意空间方向的超精密点胶。实验讨论了移液针直径和点胶距离（移液针先端与点胶面的距离）对点胶性能（胶斑直径）的影响；在此基础上，匹配移液针直径，点胶距离，玻璃微管内径和点胶速度等参数，实现了胶液黏度为971 cP，点胶量为40 fL、170 fL、180 fL在3种亲水性不同的点胶面上的微量点胶；以及胶液黏度为3104 cP，胶斑直径为243.9 m 的超微量点胶。实验结果验证了提出方法的可行性。

Abstract

To satisfy the requirement of an ultra-micro dispensing volume no more than 1 pL in micro-assembly and sealing engineering

an ultra-micro dispensing method applicable to both contact dispensing and non-contact dispensingwas presented. In this method

a needle was moved through the capillary equipped with dispensing fluid and the droplet was adhered to its tip. When the needle tip approached to the target surface

the dispensing could be achieved due to the interfacial tension between the adhered droplet and the target surface. The dispensing volume could be easily controlled by matching the parameters of dispensing process. This method is suitable for any viscosity dispensing fluid ranging from 1 cP to 3.5105 cP

and can dispense for spatial arbitrary directions. Based on an ultra-micro dispensing experiment platform built in this paper

the influences of needle diameter and gap (distance between needle tip and target surface) on the size of dispensing spot were investigated. According to the studies

proper needle diameters

gaps

inner diameters of capillary and dispensing velocity were chosen

the ultro-micro dispensing with the volume of 40 fL

170 fL and 180 fL was achieved when the fluid viscosity was 971 cP and the dispensing spot diameter was 243.9 m

as well when the viscosity was up to 30000cP. The experimental results verify that the proposed method is feasibility.

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references

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