title: Nano-inspired fluidic interactivity for boiling heat transfer: impact and criteria.
abstract: The enhancement of boiling heat transfer, the most powerful energy-transferring technology, will lead to milestones in the development of high-efficiency, next-generation energy systems. Perceiving nano-inspired interface functionalities from their rough morphologies, we demonstrate interface-induced liquid refreshing is essential to improve heat transfer by intrinsically avoiding Leidenfrost phenomenon. High liquid accessibility of hemi-wicking and catalytic nucleation, triggered by the morphological and hydrodynamic peculiarities of nano-inspired interfaces, contribute to the critical heat flux (CHF) and the heat transfer coefficient (HTC). Our experiments show CHF is a function of universal hydrodynamic characteristics involving interfacial liquid accessibility and HTC is improved with a higher probability of smaller nuclei with less superheat. Considering the interface-induced and bulk liquid accessibility at boiling, we discuss functionalizing the interactivity between an interface and a counteracting fluid seeking to create a novel interface, a so-called smart interface, for a breakthrough in boiling and its pragmatic application in energy systems.
authors.affiliation: IFW Dresden, P. O. Box 270116, 01171 Dresden, Germany.
authors.forename: Beom Seok
authors.initials: BS
authors.lastname: Kim
authors.affiliation: Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea.
authors.forename: Geehong
authors.initials: G
authors.lastname: Choi
authors.affiliation: Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, Unites States.
authors.forename: Sangwoo
authors.initials: S
authors.lastname: Shin
authors.affiliation: IFW Dresden, P. O. Box 270116, 01171 Dresden, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Gemming
authors.affiliation: Department of Mechanical Engineering, Yonsei University, Seoul 03722, Korea.
authors.forename: Hyung Hee
authors.initials: HH
authors.lastname: Cho