Visible light guided manipulation of liquid wettability on photoresponsive surfaces
dc.contributor.author | Kwon, Gibum | |
dc.contributor.author | Panchanathan, Divya | |
dc.contributor.author | Mahmoudi, Seyed Reza | |
dc.contributor.author | Gondal, Mohammed A. | |
dc.contributor.author | McKinley, Gareth H. | |
dc.contributor.author | Varanasi, Kripa K. | |
dc.date.accessioned | 2018-11-08T19:06:23Z | |
dc.date.available | 2018-11-08T19:06:23Z | |
dc.date.issued | 2017-04-25 | |
dc.identifier.citation | Kwon, G. et al. Visible light guided manipulation of liquid wettability on photoresponsive surfaces. Nat. Commun. 8, 14968 doi: 10.1038/ncomms14968 (2017). | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/27250 | |
dc.description.abstract | Photoresponsive titania surfaces are of great interest due to their unique wettability change upon ultraviolet light illumination. However, their applications are often limited either by the inability to respond to visible light or the need for special treatment to recover the original wettability. Sensitizing TiO2 surfaces with visible light-absorbing materials has been utilized in photovoltaic applications. Here we demonstrate that a dye-sensitized TiO2 surface can selectively change the wettability towards contacting liquids upon visible light illumination due to a photo-induced voltage across the liquid and the underlying surface. The photo-induced wettability change of our surfaces enables external manipulation of liquid droplet motion upon illumination. We show demulsification of surfactant-stabilized brine-in-oil emulsions via coalescence of brine droplets on our dye-sensitized TiO2 surface upon visible light illumination. We anticipate that our surfaces will have a wide range of applications including microfluidic devices with customizable wettability, solar-driven oil–water clean-up and demulsification technologies. | en_US |
dc.publisher | Nature Research | en_US |
dc.rights | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | Visible light guided manipulation of liquid wettability on photoresponsive surfaces | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Kwon, Gibum | |
kusw.kudepartment | Mechanical Engineering | en_US |
dc.identifier.doi | 10.1038/ncomms14968 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |
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