A MICROFLUIDIC DRIVING METHOD BASED ON ULTRASONIC CAVITATION BUBBLES
(0) The applications of traditional thermal bubble microfluidic driving methods are limited by high local heat.To overcome this problem,a novel microfluidic driving method based on ultrasonic cavitation bubbles is proposed in this paper.A piezoelectric transducer is employed instead of thermal method,to generate ultrasonic cavitation bubbles,in this case,the flow rate can be extremely low but continuous,without heat problems.A prototype based on this principle has been designed,fabricated and tested,showing a minimal flow rate of 0.1873 nL/min with 80Vpp applied voltage,and a maximal valid flow rate of 17.741 nL/min with 130Vpp applied voltage at the frequency of 23.78kHz.
Microfluidic driving method Bubble pump Cavitation Piezoelectric transducer
Fang-yi Wang Liang Wang Jia-mei Jin
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P.R.China
国际会议
石家庄
英文
219-222
2019-11-01（万方平台首次上网日期，不代表论文的发表时间）