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Observation of Acoustic Streaming in Air and Application to Micro-Manipulator

Research Project

Project/Area Number 11650341
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 電子デバイス・機器工学
Research InstitutionChiba University

Principal Investigator

HASHIMOTO Ken-ya  Chiba University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (90134353)

Co-Investigator(Kenkyū-buntansha) OMORI Tatsuya  Chiba University, Faculty of Engineering, Research Associate, 工学部, 助手 (60302527)
YAMAGUCHI Masatsune  Chiba University Faculty of Engineering, Professor, 工学部, 教授 (00009664)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
KeywordsAcoustic Streaming / Transducer / Piezoelectric Material / PZT / Sol-Gel Method / High Frequency / マイクロマニピュレータ / 超音波トランスジューサ / ゾルゲル法 / 圧電性 / チタン酸ジルコン酸鉛 / セラミック
Research Abstract

It is known that irradiation of powerful ultrasonic waves to liquid causes its flow toward the direction of wave propagation. This phenomenon is called the acoustic streaming. The authors reported that this phenomenon can be enhanced considerably by the use of high frequency ultrasonic waves. Final goal of this project was to observe the acoustic streaming in air. For this purpose, we have devoted ourselves to the development of high frequency and highly efficient ultrasonic transducers for air. First, sol-gel deposition of piezoelectric PZT films was investigated in detail for the application to the ultrasonic transducers. It was shown how the film quality and piezoelectricity are influenced by the temperature profile and environmental gas during the thermal process. Then, the fabrication process for the ultrasonic transducer was investigated. We developed a method to pattern PZT precursor gel prior to the thermal process. In addition, we also developed a technique to fabricate relatively thick and flat PZT structures of arbitrary shape. This technique is advantageous due to its simplicity and high reproducibility. These methods were implemented into the realization of high frequency ultrasonic transducers. The ultrasonic transducer of 1 μm thickness and 160 μm diameter was fabricated. The transducer operates at 2 GHz, and estimated electromechanical coupling was attained to 20%. For the efficient excitation of ultrasonic waves to air, the transducer must be thinned to excite fracture vibration. Presently, we are developing this thinning process. We hope that we will establish this process very soon, and then will try to observe the acoustic streaming in air.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] T.Omori et al.: "Preparation of piezoelectric PZT micro-discs by sol-gel method"Technical Digest of the 17th Sensor Symposium. 69-72 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori et al.: "Selective area preparation of PZT discs and their ultrasonic applications"2000 IEEE Ultrasonics Symposium proceedings. (to be published). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori et al.: "PZT thin films for SAW and BAW devices"Intern'l Symp. on acoustic wave devices for future mobile communication systems. 245-250 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori, H.Makita, M.Takamatsu, K.Hashimoto, M.Yamaguchi and M.Sato: "Preparation piezoelectric PZT Micro-Discs by Sol-Gel Method"Journal of IEEJ (E). under review.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori, T.Suzuki, K.Hashimoto and M.Yamaguchi: "Selective Area Preparation of PZT Discs and Their Applications"Proceedings of IEEE 2000 Ultrasonics Symposium. to be published.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori, K.Hashimoto and M.Yamaguchi: "PZT Thin Films for SAW and BAW Devices"Proceedings of International Symposium on Acoustic Wave Devices for Future Mobile Communication Systems. 245-250 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori, H.Makita, M.Takamatsu, K.Hashimoto, M.Yamaguchi and M.Sato: "Preparation piezoelectric PZT Micro-Discs by Sol-Gel Method"Technical Digest of the 17th Sensor Symposium. 69-72 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori, H.Makita, M.Takamatsu, K.Hashimoto and M.Yamaguchi: "Selective Area PZT-Preparation by Sol-Gel Method"Proceedings of IEEE 1999 Ultrasonics Symposium. 995-998

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Takamatsu, H.Makita, T.Omori, K.Hashimoto and M.Yamaguchi: "Selective Area PZT-Preparation by Sol-Gel Method"Convention Record, IEICE. [in Japanese]. 237 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Makita, M.Takamatsu, T.Omori, K.Hashimoto and M.Yamaguchi: "Fabrication of PZT Disk Transducers by Sol-Gel Method"66th Meeting Report, #150 Committee, JSPS. [in Japanese]. 5-8 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori, H.Makita, M.Takamatsu, K.Hashimoto and M.Yamaguchi: "Selective Area PZT-Preparation by Sol-Gel Method"64h Meeting Report, #150 Committee, JSPS. in Japanese. 19-24 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Omori et al.: "Preparation of piezoelectric PZT micro-discs by sol-gel method"Technical Digest of the 17th Sensor Symposium. 69-72 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Omori et al.: "Selective area preparation of PZT discs and their ultrasonic applications"2000 IEEE Ultrasonics Symposium proceedings. (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Omori et al.: "PZT thin films for SAW and BAW devices"Intern'l Symp.on acoustic wave devices for future mobile communication systems. 245-250 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] T. Omori, H. Makita, M. Takamatsu, K. Hashimoto and M. Yamaguchi: "Selective Area PZT-preparation by Sol-Gel Method"Proceedings of IEEE Ultrasonics Symposium. (to be published). (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 橋本研也,小川正太郎,野々口晃典,大森達也,山口正恒: "対向ターゲットスパッタ法による圧電性酸化薄膜の堆積"電子情報通信学会論文誌 C_I. J82-C-I,12. 777-783 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 牧田博史,高松睦,大森達也,橋本研也,山口正恒: "ゾル-ゲル法による圧電性PZT薄膜アレイの作製"日本学術振興会弾性波素子第150委員会第66回研究会資料. 5-8 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 大森達也,牧田博史,高松睦,橋本研也,山口正恒: "ゾル-ゲル法によるPZT薄膜の合成と評価"日本学術振興会弾性波素子第150委員会第64回研究会資料. 19-24 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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