@article{c4a26e54c64b418d89b1d0b8feb9edd3,
title = "Atmosphere-Mediated Scalable and Durable Biphilicity on Rationally Designed Structured Surfaces",
abstract = "Biphilic surfaces having spatially distinct wetting have the potential to enable a plethora of applications ranging from fog harvesting, microfluidics, advanced manufacturing, and pumpless fluid transfer. However, complex and costly fabrication along with poor durability have hindered the widespread utilization of biphilic surfaces. Here, hierarchical biphilic micro/nanostructured surfaces passively functionalized by the atmosphere are demonstrated as a platform to create scalable and abrasion-resistant biphilic interfaces. Biphilic hierarchical copper oxide (CuO) nanowires are fabricated on copper substrates via laser ablation followed by thermal oxidation. The surfaces spontaneously become globally superhydrophobic and locally hydrophilic due to the adsorption of airborne volatile organic compounds on the ultrahigh surface energy CuO nanowires. The curvature-dependent spatial variation in nanowire morphology enables local roughness variation and wetting contrast without the need for selective functionalization. Coalescence-induced droplet jumping and water vapor condensation experiments demonstrate global superhydrophobicity with discrete local hydrophilicity. In addition to enhanced fog harvesting rates, the surfaces are demonstrated to have repeatable self-healing function with enhanced abrasion resistance compared to single-tier structured surfaces. The work not only develops a facile method of fabricating scalable biphilic surfaces via nanoscale structure variation and atmosphere-mediated surface modification, but also provides insights into the role of wetting contrast on droplet dynamics.",
keywords = "biphilic, condensation, fog harvesting, superhydrophobicity, volatile organic compounds",
author = "Xiao Yan and Feng Chen and Xueqian Zhang and Yimeng Qin and Chongyan Zhao and Soumyadip Sett and Hyeongyun Cha and Hoque, {Muhammad Jahidul} and Fulong Zhao and Zhiyong Huang and Nenad Miljkovic",
note = "N.M. acknowledges funding support from the Office of Naval Research (Grant No. N00014-16-1-2625) and the National Science Foundation under Award No. 1554249. X.Y., F.C., and Z.H. gratefully acknowledge the funding support from the National Natural Science Foundation of China (Grant No. 51206092) and the National Science and Technology Major Project (Grant No. ZX06901). X.Y. appreciates the financial support of the China Scholarship Council (Grant No. 201606210181). N.M. gratefully acknowledges funding support from the International Institute for Carbon Neutral Energy Research (WPI-I2CNER), sponsored by the Japanese Ministry of Education, Culture, Sports, Science and Technology. Scanning electron microscopy was carried out in part in the Materials Research Laboratory Central Facilities, University of Illinois. N.M. acknowledges funding support from the Office of Naval Research (Grant No. N00014‐16‐1‐2625) and the National Science Foundation under Award No. 1554249. X.Y., F.C., and Z.H. gratefully acknowledge the funding support from the National Natural Science Foundation of China (Grant No. 51206092) and the National Science and Technology Major Project (Grant No. ZX06901). X.Y. appreciates the financial support of the China Scholarship Council (Grant No. 201606210181). N.M. gratefully acknowledges funding support from the International Institute for Carbon Neutral Energy Research (WPI‐I2CNER), sponsored by the Japanese Ministry of Education, Culture, Sports, Science and Technology. Scanning electron microscopy was carried out in part in the Materials Research Laboratory Central Facilities, University of Illinois.",
year = "2020",
month = jul,
day = "1",
doi = "10.1002/admi.202000475",
language = "English (US)",
volume = "7",
journal = "Advanced Materials Interfaces",
issn = "2196-7350",
publisher = "John Wiley & Sons, Ltd.",
number = "13",
}