水浸型可変焦点音響ミラー

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2016/09/01

タイトル(英語): Underwater Varifocal Acoustic Mirror

著者名: 青木　亮(東京大学大学院情報理工学系研究科知能機械情報学専攻),グェン　タン ヴィン(東京大学大学院情報理工学系研究科知能機械情報学専攻),野田　堅太郎(東京大学大学院情報理工学系研究科知能機械情報学専攻),高畑　智之(東京大学大学院情報理工学系研究科知能機械情報学専攻),松本　潔(東京大学 IRT研究機構),下山　勲(東京大学大学院情報理工学系研究科知能機械情報学専攻)

著者名(英語): Ryo Aoki (Department of Mechano-Informatics, Graduate School of Information Science and Technology, the University of Tokyo), Nguyen Thanh-Vinh (Department of Mechano-Informatics, Graduate School of Information Science and Technology, the University of Tokyo), Kentaro Noda (Department of Mechano-Informatics, Graduate School of Information Science and Technology, the University of Tokyo), Tomoyuki Takahata (Department of Mechano-Informatics, Graduate School of Information Science and Technology, the University of Tokyo), Kiyoshi Matsumoto (Information and Robot Technology Research Initiative, the University of Tokyo), Isao Shimoyama (Department of Mechano-Informatics, Graduate School of Information Science and Technology, the University of Tokyo)

キーワード: 音響ミラー,可変焦点,球面鏡,集音,シリコーンゴム　　acoustic mirror,varifocal,spherical mirror,sound focusing,silicone rubber

要約(英語): This paper reports a method to focus sound from a moving source in liquid to a fixed acoustic sensor using a varifocal acoustic mirror made from silicone rubber. A boundary between silicone rubber and air works as an acoustic mirror whose curvature radius can be changed. Simulation results showed that the spherical surface was able to focus sound coming from a point source to a certain point. It was confirmed that a fabricated varifocal acoustic mirror improved the ouptut of an acoustic sensor for different sound source positions. The curvature radius of the acoustic mirror corresponding to the maximum sensor output conformed to the value calculated using a theoretical equation. The sound pressure where the sensor was positioned became at most 12 times larger than that without the acoustic mirror.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.136 No.9 （2016） 特集：マイクロ・ナノ医療デバイス

本誌掲載ページ: 390-397 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/136/9/136_390/_article/-char/ja/