Water covers more than 70% of the Earth’s surface, and it is one of the essential sources of life. Although water drops appear to be light and fragile to us, they present a drastically different impression for small-size creatures such as insects. Such difference comes from the liquid surface tension which becomes dominant at smaller scales. Rather than suffering from surface tension, Consequently, a strong force that overcomes the surface tension is required in general to create movements of small drops on a substrate. there are lots of natural species that positively utilize surface tension to change their interactions with water through wettability controls with inspiring hydrophobic and hydrophilic patterns.
Prof. Tingyi “Leo” Liu received his B.E. in Electrical Engineering from Zhejiang University, Hangzhou, China in 2009, M.S. and Ph.D. in Mechanical Engineering from the University of California, Los Angeles (UCLA) in 2011 and 2014, respectively. He joined the University of Massachusetts Amherst in 2018. He is now leading the Interdisciplinary Interface Engineering Laboratory (Inter²EngrLAB). His research focuses on utilizing micro- and nano-fabrication to study diverse interfacial phenomena and to engineer the heterogeneous interfaces for interdisciplinary applications such as soft and stretchable bioelectronics.