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Superoleophilic Tit...
Superoleophilic Titania Nanoparticle Coatings with Fast Fingerprint Decomposition and High Transparency
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- Choi, Hyungryul J. (author)
- MIT, Dept Mech Engn, Cambridge, MA 02139 USA.;1 Infinite Loop, Cupertino, CA 95014 USA.
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- Park, Kyoo-Chul (author)
- MIT, Dept Mech Engn, Cambridge, MA 02139 USA.;Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA.
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- Lee, Hyomin (author)
- MIT, Dept Chem Engn, Cambridge, MA 02139 USA.;Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
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- Crouzier, Thomas (author)
- MIT, Dept Biol Engn, 77 Massachusetts Ave, Cambridge, MA 02139 US
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- Rubner, Michael F. (author)
- MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.
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- Cohen, Robert E. (author)
- MIT, Dept Chem Engn, Cambridge, MA 02139 USA.
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- Barbastathis, George (author)
- MIT, Dept Mech Engn, Cambridge, MA 02139 USA.;Singapore MIT Alliance Res & Technol SMART Ctr, Singapore, Singapore.
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- McKinley, Gareth H. (author)
- MIT, Dept Mech Engn, Cambridge, MA 02139 USA.
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MIT, Dept Mech Engn, Cambridge, MA 02139 USA;1 Infinite Loop, Cupertino, CA 95014 USA. MIT, Dept Mech Engn, Cambridge, MA 02139 USA.;Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA. (creator_code:org_t)
- 2017-02-21
- 2017
- English.
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In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 9:9, s. 8354-8360
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Low surface tension sebaceous liquids such as human fingerprint oils are readily deposited on high energy surfaces such as clean glass, leaving smudges that significantly lower transparency. There have been several attempts to prevent formation of these dactylograms on glass by employing oil-repellent textured surfaces. However, nanotextured superoleophobic coatings typically scatter visible light, and the intrinsic thermodynamic metastability of the composite superoleophobic state can result in failure of the oil repellency under moderate contact pressure. We develop titania-based porous nanoparticle coatings that are superoleophilic and highly transparent and which exhibit short time scales for decomposition of fingerprint oils under ultraviolet light. The mechanism by which a typical dactylogram is consumed combines wicking of the sebum into the nanoporous titania structure followed by photocatalytic degradation. We envision a wide range of applications because these TiO2 nanostructured surfaces remain photocatalytically active against fingerprint oils in natural sunlight and are also compatible with flexible glass substrates.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- fingerprint degradation
- smudge resistant
- transparent nanoporous surfaces
- superoleophilic surfaces
- photocatalytic effects
- titania nanoparticles
Publication and Content Type
- ref (subject category)
- art (subject category)
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