Fabrication of Buried Microchannels with Almost Circular Cross-Section Using HNA Wet Etching
Qihui Yu,
Henk-Willem Veltkamp,
Remco J. Wiegerink
et al.
Abstract:In this paper, a novel fabrication process for the realization of large, suspended microfluidic channels is presented. The method is based on Buried Channel Technology and uses a mixture of HF, HNO3, and water etchant, which has high selectivity between the silicon substrate and the silicon-rich silicon nitride mask material. Metal electrodes for actuation and read-out are integrated into the fabrication process. The microfluidic channels are released from the silicon substrate to allow the vibrational movemen… Show more
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