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. 2022 Sep 2;13:5181. doi: 10.1038/s41467-022-32919-4

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Fig. 3 — a Micropillars at their initial position with pillar tips partially immersed by PVA solution. b Micropillars being bent due to the capillary force of PVA solution. c Micropillar tips making contact with one another. d Clustered micropillars right after the PVA solution dried off the surface.