Device and technique for high-viscous adhesive micro-dispensing with electrostatic induction

Zheng, Xu; QIAN, Yan-wen; Qin, Shaochun; WANG, Xiao-dong; Xu, Xiaoyu

doi:10.37188/ope.20212910.2386

Cited by 1 publication

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“…Currently, the transfer printing technique is fairly convenient for parallel microdispensing [6][7][8]. Its core can be described as: with a given mass of liquid between two surfaces, called the liquid bridge, some liquid is transferred from one probe or stamp onto another surface as the two surfaces are separated by the stretching action [9,10]. The transfer printing approach overcomes the high flow resistance problem in the injection approach, thereby providing a promising solution to parallel microdispensing.…”

Section: Introductionmentioning

confidence: 99%

Parallel Microdispensing Method of High-Viscous Liquid Based on Electrostatic Force

Qin

et al. 2022

Micromachines

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Parallel microdispensing of high-viscous liquid is a fundamental task in many industrial processes. Herein, a smart printing head is developed, including the probe array, the electric control module, the contact force measurement module, and the extra force balance module. The parallel dispensing of high-viscous liquid in nL level is achieved. The interacting effect between probes on the loading process is analyzed too. According to the result, the interacting effect between probes has a strong influence on the loading process. Therefore, the strategy of serial electrical loading and parallel transfer printing is utilized. Finally, the dependency of transfer printing volume on probe size, etc., is experimentally investigated. The volume of the loaded droplet can be controlled by the lifting velocity of the probe array, and the volume of the transferred droplet can be adjusted by the size of the probe instead of the contact force. The advantage of the proposed method is to realize the highly repeatable parallel dispensing of high-viscous liquid with a relatively simple device.

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