4.6 Article

Microfluidic Chip Fabrication of Fused Silica Using Microgrinding

Journal

MICROMACHINES
Volume 14, Issue 1, Pages -

Publisher

MDPI
DOI: 10.3390/mi14010096

Keywords

microfluidic chip; fused silica; grinding

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In this paper, polycrystalline diamond tools were fabricated and used for the microgrinding process of fused silica. The effects of high feed rate and depth of cut on surface roughness and edge chipping were studied to improve productivity. Additionally, a toolpath for microchannels and a microfluidic chip array were successfully fabricated using this method.
Although glass is in high demand as a material for microfluidic chips, it is still difficult to fabricate microstructures on glass. In this paper, polycrystalline diamond tools were fabricated through electrical discharge machining, and the microgrinding process for fused silica using the tools was studied. In order to improve the productivity, the machining effects of the high feed rate and depth of cut on the surface roughness of the channel bottoms and edge chipping were studied. A toolpath for the microchannels of a microfluidic chip was also studied and a microfluidic chip array was fabricated using this method.

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