Surface Coating of Bonded PDMS Microchannels by Atmospheric Pressure Microplasma

• DOI: 10.1002/ppap.201300123
• Publication Date: 2014-01-23T14:30:10Z
• Authors: Muhammad Bashir; Shazia Bashir; Julia M. Rees; William. B. Zimme...
• Keywords: Microplasma; Hexamethyldisiloxane; Polydimethylsiloxane; Microchannel; Plasma polymerization; Nanofluidics; Surface Modification

The surface coating of sealed microchannels is useful for a variety applications in microfluidics and lab-on-a-chip devices. This paper demonstrates novel technique bonded polydimethylsiloxane (PDMS) microchannel using atmospheric pressure microplasma. Plasma was generated by two types electrode arrangements: (i) needle–aluminum foil with dielectric barrier (DB) (ii) needle–needle configuration without DB. microplasma the DB selected deposition this study. monomer ethylenediamine used as organic precursor plasma polymerization. Oil-in-water microemulsions were formed T-shaped order to test stability durability polymerized films. coatings characterized Fourier transform infrared spectroscopy, X-ray photoelectron atomic force microscopy, contact angle measurements.