dc.contributor.author | Ezazi, Mohammadamin | |
dc.contributor.author | Shrestha, Bishwash | |
dc.contributor.author | Maharjan, Anjana | |
dc.contributor.author | Kwon, Gibum | |
dc.date.accessioned | 2023-05-12T17:39:58Z | |
dc.date.available | 2023-05-12T17:39:58Z | |
dc.date.issued | 2021-10-13 | |
dc.identifier.citation | Ezazi, M., Shrestha, B., Maharjan, A., & Kwon, G. (2021). Water-Responsive Self-Repairing Superomniphobic Surfaces via Regeneration of Hierarchical Topography. ACS materials Au, 2(1), 55–62. https://doi.org/10.1021/acsmaterialsau.1c00036 | en_US |
dc.identifier.uri | https://hdl.handle.net/1808/34180 | |
dc.description.abstract | Superomniphobic surfaces that can self-repair physical damage are desirable for sustainable performance over time in many practical applications that include self-cleaning, corrosion resistance, and protective gears. However, fabricating such self-repairing superomniphobic surfaces has thus far been a challenge because it necessitates the regeneration of both low-surface-energy materials and hierarchical topography. Herein, a water-responsive self-repairing superomniphobic film is reported by utilizing cross-linked hydroxypropyl cellulose (HPC) composited with silica (SiO2) nanoparticles (HPC-SiO2) that is treated with a low-surface-energy perfluorosilane. The film can repair physical damage (e.g., a scratch) in approximately 10 s by regenerating its hierarchical topography and low-surface-energy material upon the application of water vapor. The repaired region shows an almost complete recovery of its inherent superomniphobic wettability and mechanical hardness. The repairing process is driven by the reversible hydrogen bond between the hydroxyl (−OH) groups which can be dissociated upon exposure to water vapor. This results in a viscous flow of the HPC-SiO2 film into the damaged region. A mathematical model composed of viscosity and surface tension of the HPC-SiO2 film can describe the experimentally measured viscous flow with reasonable accuracy. Finally, we demonstrate that the superomniphobic HPC-SiO2 film can repair physical damage by a water droplet pinned on a damaged area or by sequential rolling water droplets. | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | Copyright © 2021 The Authors. Published by American Chemical Society. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0 | en_US |
dc.subject | Superomniphobic surface | en_US |
dc.subject | Self-repairing | en_US |
dc.subject | Hydroxypropyl cellulose | en_US |
dc.subject | Dynamic hydrogen bonding | en_US |
dc.subject | Viscous flow | en_US |
dc.title | Water-Responsive Self-Repairing Superomniphobic Surfaces via Regeneration of Hierarchical Topography | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Ezazi, Mohammadamin | |
kusw.kuauthor | Shrestha, Bishwash | |
kusw.kuauthor | Maharjan, Anjana | |
kusw.kuauthor | Kwon, Gibum | |
kusw.kudepartment | Mechanical Engineering | en_US |
dc.identifier.doi | 10.1021/acsmaterialsau.1c00036 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0003-2284-9809 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0003-0045-8890 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-7192-1910 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.identifier.pmid | PMC9888626 | en_US |
dc.rights.accessrights | openAccess | en_US |