Fabrication of three dimensional microfluidic system in poly(dimethylsiloxane) on piezoelectric substrate

Abstract

A new method for prototype of a three dimensional (3 D) microfluidic device on piezoelectric substrate was presented. Wires were stick by colloidal starch, and dried in a thermotank for three dimensional channels mold. The mold was slightly placed in a groove with poly(dimethylsiloxane). After having been solidified, these wires were drawn off to form 3 D microchannels. Surface acoustic wave was used to driven sample droplet to the inlet of the microchannel in microfluidic device. Red fluid transportation in different microchannels was successfully demonstrated using the 3 D microfluidic device at 24.5 dBm signal power for verifying the function of the microfluidic device.

Keywords:

• Surface acoustic wave
• 3D microfluidic device
• transportation
• interdigital transducer
• prototype

Additional information

Funding

This work was partly supported by The Natural Science Foundation of the Jiangsu Higher Education Institutions of China under Grant No.17KJB510004, and Talent funding of Wuyi University under Grant No.YJ201809.