Journal
ACS OMEGA
Volume 5, Issue 41, Pages 26908-26913Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c04140
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Funding
- Fundamental Research Funds for the Central Universities [A03017023601300]
- Max-Planck-Gesellschaft (Max Planck Partner Group UESTC-MPIP)
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Water droplets are usually charged positively via either electrospray or contact electrification at the solid/liquid interface. Herein, we describe a facile twostep strategy to generate charged droplets with desired polarities. In particular, negatively charged droplets can be generated via electrostatic induction using a precharged superamphiphobic substrate as an electret. The interplay of repulsive and attractive interactions between like- and unlike-charged droplets or electret leads to rapid droplet transport and self-assembly of specific highly ordered arrays.
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