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. 2016 Apr 11;6:24276. doi: 10.1038/srep24276

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(a) Time-lapse images of the drop detachment process on the Bare surface. When a hanging pendant droplet reaches to a critical volume (0 s), it goes through the dynamic detachment process (1.14–1.22 s). This occurs when its weight exceeds the capillary adhesion force. (b) Image of the maximum volume of the hanging pendant drop on the Bare, HPo, SHPo, K.Oil 5cst, S.Oil 5cst, S.Oil 100cst, and S.Oil 1000cst surfaces. Each test surface having various wettability exhibits different volume and contact diameter of the hanging pendant drop.