Title :
Sound focusing in liquid using a varifocal acoustic mirror
Author :
Aoki, Ryo ; Nguyen Thanh-Vinh ; Noda, Kentaro ; Takahata, Tomoyuki ; Matsumoto, Kiyoshi ; Shimoyama, Isao
Author_Institution :
Univ. of Tokyo, Tokyo, Japan
Abstract :
This paper reports a method to focus sound in liquid to a desired point using a PDMS-based varifocal acoustic mirror. We used PDMS-air boundary as a sound reflector to concentrate sound. By adjusting the curvature radius of the acoustic mirror, we could change the position where sound was concentrated. We confirmed that our method was able to improve the output of the acoustic sensor for different sound source positions.
Keywords :
acoustic focusing; acoustic wave reflection; liquids; mirrors; PDMS-air boundary; PDMS-based varifocal acoustic mirror; acoustic sensor; liquid; sound focusing; sound reflector; sound source positions; Acoustic sensors; Acoustics; Convergence; Focusing; Mirrors; Sonar equipment; Transducers;
Conference_Titel :
Micro Electro Mechanical Systems (MEMS), 2015 28th IEEE International Conference on
Conference_Location :
Estoril
DOI :
10.1109/MEMSYS.2015.7051111
