[C-3-10] Influence of the opposing block surface profile in the performance of a pump using the ultrasonic transducer and opposing block for liquid. 〇Shoya Yamamoto1, Masaya Takasaki1, Daisuke Yamaguchi1, Eiryo Ko1, Yuji Ishino1, Takeshi Mizuno1 (1.Saitama university) Keywords:Actuator、pump、opposing block、ultrasonic vibration、acoustic radiation pressure