Site-Selective Wettability Control of Honeycomb Films by UV-O3-Assisted Sol-Gel Coating

Hiroshi Yabu, Jun Matsui, Yasutaka Matsuo

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Wettability control of porous materials is significant in lateral flow immunoassay, microfluidic systems, microdroplet manipulation, and so on. In this report, formation of metal oxide layers on self-organized polymer honeycomb films to control surface wettability by simple sol-gel coating and UV-O3 treatment was demonstrated. By the combination of bottom-up and top-down processes, silica thin layers can be formed by retaining their original three-dimensional honeycomb structures. Furthermore, photopatterning of metal oxides on honeycomb films can be achieved by UV irradiation through photomasks. Site-selective wettability control of honeycomb films was realized by patterning silica layers on the surface of the film.

Original languageEnglish
Pages (from-to)12023-12029
Number of pages7
Issue number40
Publication statusPublished - 2020 Oct 13


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