Vahabi, Hamed, authorKota, Arun K., advisorDasi, Lakshmi Prasad, committee memberTavener, Simon, committee memberBandhauer, Todd M., committee member2019-09-102021-09-032019https://hdl.handle.net/10217/197312Recent advances in micro/nano-scale fabrication techniques and synthesis of novel chemicals with a variety of functionalities have opened up new avenues in tailoring solid-liquid interactions. In this work, by systematically tuning the wettability and slipperiness of solid surfaces, we developed a multitude of novel surfaces and strategies. First, we developed metamorphic superomniphobic surfaces that display wetting transition in response to heat. Second, we systematically studied the dynamics of droplets of various liquids during coalescence-induced jumping on textured super-repellent surfaces. Third, we developed a simple and passive strategy consisting of superomniphobic surfaces with a protruding macrotexture to demonstrate coalescence-induced jumping with significantly higher energy conversion efficiency, compared to state-of-the-art surfaces. Fourth, we developed a simple "grafting to" technique to fabricate a novel non-textured hydrophilic surface that is counterintuitively slippery with unprecedented potential to enhance the heat transfer coefficient in dropwise condensation. Fifth, we developed a novel triboelectric-based droplet manipulation technique on smooth hydrophobic slippery surfaces that is very simple without any complex fabrication of manipulation platform or expensive actuation system. Overall, the novel surfaces and strategies developed in this work have significant implications for phase-change heat transfer, liquid transportation, anti-fouling, self-cleaning, drag reduction, corrosion control, and manipulation of liquid droplets.born digitaldoctoral dissertationsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.coalescence-induced jumpingdropwise condensationsuper-repellent surfacesdroplet manipulationCFDslippery hydrophilic SLIC surfaceText