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

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...

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Bibliographic Details
Published in:Micromachines (Basel) 2022-03, Vol.13 (4), p.545
Main Authors: Xu, Zheng, Qin, Shaochun, Yu, Yu, Wang, Xiaodong, Liu, Junshan, He, Wenxin
Format: Article
Language:English
Subjects:
Arrays
Contact force
Dispensing
Droplets
Electric contacts
Electric control
Force measurement
microdispensing
Modules
parallel transfer printing
printing head
Sensors
Silicon wafers
Simulation
Transfer printing
Velocity
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Summary: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.
ISSN:2072-666X
2072-666X
DOI:10.3390/mi13040545