Magnetic microparticle-polydimethylsiloxane composite for reversible microchannel bonding

Chia Wen Tsao, Yueh Pu Lee

研究成果: 雜誌貢獻期刊論文同行評審

11 引文 斯高帕斯(Scopus)


In this study, an iron oxide magnetic microparticles and poly(dimethylsiloxane) (MMPs-PDMS) composite material was employed to demonstrate a simple high-strength reversible magnetic bonding method. This paper presents the casting of opaque-view (where optical inspection through the microchannels was impossible) and clear-view (where optical inspection through the microchannel was possible) MMPs-PDMS. The influence of the microchannel geometries on the casting of the opaque-view casting was limited, which is similar to standard PDMS casting. Clear-view casting performance was highly associated with the microchannel geometries. The effects of the microchannel layout and the gap between the PDMS cover layer and the micromold substrate were thoroughly investigated. Compared with the native PDMS bonding strength of 31 kPa, the MMPs-PDMS magnetic bonding experiments showed that the thin PDMS film with an MMPs-PDMS layer effectively reduced the surface roughness and enhanced MMPs- PDMS reversible magnetic bonding strength. A thin PDMS film-coated opaque-view MMPs- PDMS device exhibited the greatest bonding strength of 110 kPa, and a clear-view MMPs-PDMS device with a thin PDMS film attained a magnetic bonding strength of 81 kPa.

頁(從 - 到)2-11
期刊Science and Technology of Advanced Materials
出版狀態已出版 - 2016


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