Antireflective Transparent Oleophobic Surface by Non-Interacting Cavities
Visualitza/Obre
Cita com:
hdl:2117/124728
Tipus de documentArticle
Data publicació2018-11-16
EditorACS
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Oleophobic surfaces have been so far realized using complex micro-scale and nano-scale reentrant
geometries where primary and secondary structures or overhang geometries are typically
required. Here we propose a new design to create them with non-interacting cavities. The
suspension of liquid droplets relies on the mechanism of compression of air under the meniscus
leading to stable composite oil-air-solid interfaces. To demonstrate the concept, we make
oleophobic surfaces, with contact angle for oleic acid of about 130º (and Hexadecane about 110º),
using both micro-holes in silicon and nano-holes in glass. Thanks to the subwavelength dimensions
and antireflection effect of the nano-holes, the glass substrate also shows a high degree of optical
transparency with optical transmission exceeding that of the initial bare substrate. Crockmeter tests
without any significant change of morphology, optical and wetting properties after more than 500
passes also confirm the high mechanical durability of the nano-hole surface. The results indicate
the possibility of using the proposed oleophobic surfaces for a wide range of applications,
including self-cleaning transparent windows, windshields for automobiles and aircrafts.
CitacióRombaut, J. [et al.]. Antireflective Transparent Oleophobic Surface by Non-Interacting Cavities. "ACS Materials and Interfaces", 16 Novembre 2018.
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
acsami.8b15507.pdf | 1,317Mb | Visualitza/Obre |