Different Roles of Surface Chemistry and Roughness of Laser-Induced Graphene: Implications for Tunable Wettability.
Journal
ACS applied nano materials
ISSN: 2574-0970
Titre abrégé: ACS Appl Nano Mater
Pays: United States
ID NLM: 101726750
Informations de publication
Date de publication:
22 Sep 2023
22 Sep 2023
Historique:
received:
15
05
2023
accepted:
29
06
2023
medline:
29
9
2023
pubmed:
29
9
2023
entrez:
29
9
2023
Statut:
epublish
Résumé
The control of surface wettability is a technological key aspect and usually poses considerable challenges connected to high cost, nanostructure, and durability, especially when aiming at surface patterning with high and extreme wettability contrast. This work shows a simple and scalable approach by using laser-induced graphene (LIG) and a locally inert atmosphere to continuously tune the wettability of a polyimide/LIG surface from hydrophilic to superhydrophobic (Φ ∼ 160°). This is related to the reduced amount of oxygen on the LIG surface, influenced by the local atmosphere. Furthermore, the influence of the roughness pattern of LIG on the wettability is investigated. Both approaches are combined, and the influence of surface chemistry and roughness is discussed. Measurements of the roll-off angle show that LIG scribed in an inert atmosphere with a low roughness has the highest droplet mobility with a roll-off angle of Φ
Identifiants
pubmed: 37772265
doi: 10.1021/acsanm.3c02066
pmc: PMC10526650
doi:
Types de publication
Journal Article
Langues
eng
Pagination
16201-16211Informations de copyright
© 2023 The Authors. Published by American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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