Electrical Field Guided Electrospray Deposition for Production of Gradient Particle Patterns

ACS Applied Materials & Interfaces
Wei-Cheng YanChi-Hwa Wang

Abstract

Our previous work demonstrated the uniform particle pattern formation on the substrates using electrical field guided electrospray deposition. In this work, we reported for the first time the fabrication of gradient particle patterns on glass slides using an additional point, line, or bar electrode based on our previous electrospray deposition configuration. We also demonstrated that the polydimethylsiloxane (PDMS) coating could result in the formation of uniform particle patterns instead of gradient particle patterns on glass slides using the same experimental setup. Meanwhile, we investigated the effect of experimental configurations on the gradient particle pattern formation by computational simulation. The simulation results are in line with experimental observations. The formation of gradient particle patterns was ascribed to the gradient of electric field and the corresponding focusing effect. Cell patterns can be formed on the particle patterns deposited on PDMS-coated glass slides. The formed particle patterns hold great promise for high-throughput screening of biomaterial-cell interactions and sensing.

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Citations

Aug 26, 2020·Electrophoresis·Anna TycovaFrantisek Foret
Nov 19, 2021·ACS Applied Materials & Interfaces·Kai ChangWeiwei Deng

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