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Durham University

Department of Engineering

Staff Profile

Publication details for Professor Jun Jie Wu

Brown, P.S., Talbot, E.L., Wood, T.J., Egan, M.J., Wu, J.J., Sainic, K., Kumarc, N., Bain, C.D. & Badyal, J.P.S. (2015). Controlling picolitre droplet impact dynamics by tailoring the solid subsurface. Colloids and Surfaces A: Physicochemical and Engineering Aspects 481: 215-221.

Author(s) from Durham


The oscillatory dynamics of picolitre water droplets following impact onto a range of hydrophobic surfaces is found to be influenced by the underlayer stiffness and thickness. The relative contributions of surface functionality versus subsurface hardness have been decoupled by utilising plasmachemical surface functionalisation and underlayer crosslinking respectively. Higher oscillation frequencies are measured for softer and thicker films, which correlates to a larger surface deformation around the liquid droplet contact line.