Control of Bio-MEMS Surface Chemical Properties in Micro Fluidic Devices for Biological Applications
Authors: Dhayal, Marshal; So, Chealho; Choi, Jeong Sik; Jun, Jin
Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 11, November 2006 , pp. 3494-3498(5)
Publisher: American Scientific Publishers
Abstract:Surface chemistry of silicon/glass based bio-MEMS was controlled by depositing plasma polymerized acrylic acid (ppAc) films at two different electrode positions in a two-stage plasma reactor. AFM and XPS were used to characterize the surface roughness and surface chemistry of the films, respectively. The surface of bio-MEMS was highly functionalized with carboxylic/ester functionalities with a very good surface uniformity. The proportion of carbon atoms as C–OX, C(=O)OX functionalities was decreased and an increase in C=O functionalities was observed when the electrode position was increased from the mesh. These functionalized bio-MEMS devices have advantages in fabrication of reusable micro fluidic devices and the variation of fluid velocity by changing the surface properties may be used to develop a micro-mixing system to control the mixing ratio of different fluids for different biological and chemical applications.
Document Type: Research Article
Publication date: November 1, 2006
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