Microfluidic valves comprising nanolayered thermoresponsive polymer-grafted capillaries

Naokazu Idota, Akihiko Kikuchi, Jim Kobayashi, Kiyotaka Sakai, Teruo Okano

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

A microfluidic valves design comprising nanolayered thermoresponsive polymer-grafted capillaries was discussed. Thermoresponsive wettability changes for polymer-grafted capillary surfaces were determined using water-meniscus heights within capillaries. It was found that the inner surfaces of glass microcapillaries was modified with grafted polymers through surface-immobilized azo-initiated radical polymerization in the presence of a crosslinker and through electron-beam-irradiated polymerization. It was also found that temperature-dependent fluid dynamics with microchannels were evaluated during temperature-induced hydrophilic/hydrophobic polymer-graft alterations.

Original languageEnglish
Pages (from-to)2723-2727
Number of pages5
JournalAdvanced Materials
Volume17
Issue number22
DOIs
Publication statusPublished - 2005 Nov 18

ASJC Scopus subject areas

  • Materials Science(all)

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