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- Publisher Website: 10.1039/C8MH00964C
- Scopus: eid_2-s2.0-85055800645
- WOS: WOS:000448662900013
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Article: Superwettability with antithetic states: fluid repellency in immiscible liquids
Title | Superwettability with antithetic states: fluid repellency in immiscible liquids |
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Authors | |
Keywords | Anisotropy Gas oils Hydrophobicity Liquids Wetting |
Issue Date | 2018 |
Publisher | RSC Publications. The Journal's web site is located at http://www.rsc.org/publishing/journals/mh/about.asp |
Citation | Materials Horizons, 2018, v. 5 n. 6, p. 1156-1165 How to Cite? |
Abstract | A surface repels a fluid in an immiscible liquid when it stabilizes the former at a non-wetted Cassie state and the latter at a fully-wetted Wenzel state. Chemically, this occurs only when the former non-wets and the latter wets the surface. Here, we report the removal of the long-standing chemical constraints by harmonizing the antithetic states with rationally-designed anisotropic surface topology so that the super-repellency can appear in virtually any two-fluid system. Inspired by the 3D multi-layered structures of diatom frustules, our surface texture design introduces the required direction-dependent energetic barriers to create and stabilize the Cassie and Wenzel states, respectively. The multi-layered cage structure is found to be the best in achieving under-liquid repellency. We fabricate the required surface architecture by the microfluidics method and show experimentally its super-repellency of gas, water, and oils in all six types of fluid–liquid systems with a single micro-cage surface. Such super-repellent surfaces would be important in various fields that involve multiple fluids and anisotropic solid–liquid interactions. ER |
Persistent Identifier | http://hdl.handle.net/10722/272922 |
ISSN | 2023 Impact Factor: 12.2 2023 SCImago Journal Rankings: 3.376 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhu, P | - |
dc.contributor.author | Kong, T | - |
dc.contributor.author | Tian, Y | - |
dc.contributor.author | Tang, X | - |
dc.contributor.author | Tian, X | - |
dc.contributor.author | Wang, L | - |
dc.date.accessioned | 2019-08-06T09:19:07Z | - |
dc.date.available | 2019-08-06T09:19:07Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Materials Horizons, 2018, v. 5 n. 6, p. 1156-1165 | - |
dc.identifier.issn | 2051-6347 | - |
dc.identifier.uri | http://hdl.handle.net/10722/272922 | - |
dc.description.abstract | A surface repels a fluid in an immiscible liquid when it stabilizes the former at a non-wetted Cassie state and the latter at a fully-wetted Wenzel state. Chemically, this occurs only when the former non-wets and the latter wets the surface. Here, we report the removal of the long-standing chemical constraints by harmonizing the antithetic states with rationally-designed anisotropic surface topology so that the super-repellency can appear in virtually any two-fluid system. Inspired by the 3D multi-layered structures of diatom frustules, our surface texture design introduces the required direction-dependent energetic barriers to create and stabilize the Cassie and Wenzel states, respectively. The multi-layered cage structure is found to be the best in achieving under-liquid repellency. We fabricate the required surface architecture by the microfluidics method and show experimentally its super-repellency of gas, water, and oils in all six types of fluid–liquid systems with a single micro-cage surface. Such super-repellent surfaces would be important in various fields that involve multiple fluids and anisotropic solid–liquid interactions. ER | - |
dc.language | eng | - |
dc.publisher | RSC Publications. The Journal's web site is located at http://www.rsc.org/publishing/journals/mh/about.asp | - |
dc.relation.ispartof | Materials Horizons | - |
dc.subject | Anisotropy | - |
dc.subject | Gas oils | - |
dc.subject | Hydrophobicity | - |
dc.subject | Liquids | - |
dc.subject | Wetting | - |
dc.title | Superwettability with antithetic states: fluid repellency in immiscible liquids | - |
dc.type | Article | - |
dc.identifier.email | Zhu, P: pazhu@hku.hk | - |
dc.identifier.email | Wang, L: lqwang@hku.hk | - |
dc.identifier.authority | Wang, L=rp00184 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1039/C8MH00964C | - |
dc.identifier.scopus | eid_2-s2.0-85055800645 | - |
dc.identifier.hkuros | 300442 | - |
dc.identifier.hkuros | 301680 | - |
dc.identifier.volume | 5 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | 1156 | - |
dc.identifier.epage | 1165 | - |
dc.identifier.isi | WOS:000448662900013 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 2051-6347 | - |