Search Results:　 1-20 of 39

1

Long Range Detection by Air-Coupled Ultrasonic Sensors with Acoustic Matching Layer of Foam Material [in Japanese]

IBATA Koji , KIMURA Tomonori , MIYASHITA Hiroaki , KONISHI Yoshihiko , INOUE Satoru

空中超音波センサは、比較的簡易な装置構成で物体の検知システム、人の位置や動きの計測システム等が実現でき、広く応用されている。従来の物体検知システムでは、近傍の障害物を検知すればよく、検知距離は1〜2m程度であるが、システムの高性能化にともない、検知距離の拡大が望まれている。空中超音波センサの検知距離拡大を実現する方策の一つとして、音響整合層を用いて、センサ感度を向上させる方法が考えられる。本報告で …

IEICE technical report. Ultrasonics 111(158), 75-78, 2011-07-21

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2

Acoustic Streaming on Cover Glass/Matching layer/Piezoelectric Substrate Structure [in Japanese]

KONDOH Jun , NAKAYAMA Yutaro

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and Systems Society 131(6), 1186-1187, 2011-06-01

References (5)
3

A-11-3 Acoustic Matching Layer of Foam Material for Air-Coupled Ultrasonic Sensors [in Japanese]

Ibata Koji , Kimura Tomonori , Miyashita Hiroaki , Konishi Yoshihiko , Inoue Satoru

Proceedings of the IEICE General Conference 2011年_基礎・境界, 180, 2011-02-28

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4

Acoustic Streaming on Cover Glass/Matching layer/Piezoelectric Substrate Structure [in Japanese]

Kondoh Jun , Nakayama Yutaro

… A droplet is manipulated by using a surface acoustic wave (SAW). … Our proposed microfluidic system consists of a sensor plate/matching layer/piezoelectric substrate. … In this paper, we discuss an acoustic streaming which is caused from longitudinal wave radiation on a micro-laboratory. … The acoustic streaming on the three-layer structure was observed in the water tank and compared with it on a 128YX-LiNbO3. …

IEEJ Transactions on Electronics, Information and Systems 131(6), 1186-1187, 2011

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5

2P-34 Acoustic Streaming on Micro-laboratory which Consists of Sensor plate/ Matching layer/ Piezoelectric Substrate(Poster Session)

Kondoh Jun , Nakayama Yutaro

Proceedings of Symposium on Ultrasonic Electronics (31), 357-358, 2010-12-06

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6

Biosensor based on acoustic wave droplet manipulation [in Japanese]

SUGITA Takaaki , KONDOH Jun

弾性表面波(SAW)を利用すると,伝搬面上で液滴の搬送,混合が可能である.生体分子を用いた反応を検出するためにSAW伝搬表面上にセンサを作成した.しかし,生物工学への応用を考えるとき,生体分子を取り扱うため安価で使い捨て可能なデバイスが要求されている.そのため使い捨て可能なデバイスとして安価なカバーガラスを利用したガラス/マッチング層/圧電基板から構成されるマイクロ実験室が考案された.このマイクロ …

IEICE technical report. Ultrasonics 110(306), 1-5, 2010-11-18

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7

PS25 Development of New Focused Air-coupled Ultrasonic Sensors for Non-contact Transmission Measurements [in Japanese]

KENZAKI Kohmei , TAKAHASHI Manabu , IHARA Ikuo

… The transducer has acoustic impedance matching layer with a special focused acoustic lens. … The acoustic lens is designed to generate not only a longitudinal wave but also a shear wave and/or a plate wave in the specimen which is a steel plate of 2.8 mm. …

M&M材料力学カンファレンス 2010, 66-67, 2010-10-09

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8

Novel Micro-Laboratory on Piezoelectric Crystal

Yasuda Noriyuki , Sugimoto Mitsunori , Kondoh Jun

… Therefore, we fabricated an integrated device by adopting surface acoustic wave (SAW) streaming to control a droplet and an interdigitated electrode (IDE) sensor to measure the impedance of the droplet. … Moreover, as a new application, we fabricated a novel micro-laboratory using an isotropic material/matching layer/128YX-LiNbO3 structure (three-layer structure). …

Jpn J Appl Phys 48(7), 07GG14-07GG14-5, 2009-07-25

IR The Japan Society of Applied Physics Cited by (3)
9

Acoustic and Acousto-Optic Characteristics of Silicon Nanofoam

Iino Takeshi , Nakamura Kentaro

… It is expected that the nanofoam may work as a good acoustic matching layer of an airborne ultrasonic transducer for highly sensitive and wideband ultrasound transmission/detection since the nanofoam has an extremely low acoustic impedance. … In this study, we have estimated the fundamental acoustic characteristics of the nanofoam through acousto-optic measurements. …

Jpn J Appl Phys 48(7), 07GE01-07GE01-5, 2009-07-25

The Japan Society of Applied Physics
10

21014 Development of micro-laboratory on piezoelectric substrate : Novel application of droplet manipulation using surface acoustic wave [in Japanese]

KONDOH Jun , YASUDA Noriyuki , SUGIMOTO Mitsunori

… When a liquid droplet is loaded onto a surface acoustic wave (SAW) propagating surface, a longitudinal wave is generated into the droplet. … In this paper, we propose three-layer structure micro-laboratory, which is consisted of sensor plate/matching layer/piezoelectric substrate. …

日本機械学会関東支部総会講演会講演論文集 2009(15), 445-446, 2009-03-05

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11

Micro-laboratory on piezoelectric crystal structure [in Japanese]

YASUDA Noriyuki , SUGIMOTO Mitsunori , KONDOH Jun

近年、バイオテクノロジーやナノテクノロジーの発展に伴って、微小量の液滴を制御し、測定することができる小型な集積化デバイスが求められている。そこで、我々は液滴制御を行うためにSAWストリーミングを用い、液滴測定を行うためにIDEセンサを用いることに着目した。そして、このセンサ・アクチュエータ集積化システムをマイクロ実験室と名付けた。このマイクロ実験室は、一枚の圧電結晶上にSAW励振用IDTと液体測定 …

IEICE technical report. Ultrasonics 108(410), 111-116, 2009-01-22

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12

Development of Ultrasound Exposure System of Four Piezoelectric Ceramic Vibrators with Operating Frequency of 150 kHz for Dispersion of Nanometer-Sized Diamond Particles

Uchida Takeyoshi , Kikuchi Tsuneo , Isa Shintaro , Kawashima Norimichi , Takeuchi Shinichi

… Therefore, the dispersion of the diamond particles using an ultrasound exposure system with four lead titanium zirconate (PZT) piezoelectric ceramic vibrators and an acoustic matching layer was investigated. … As a result, the diamond particles were dispersed to a particle size of about 75 nm by acoustic cavitation due to ultrasound exposure. …

Jpn J Appl Phys 47(5), 4115-4118, 2008-05-25

The Japan Society of Applied Physics Cited by (1)
13

Development of Small Ultrasonic Probe using Lead Zirconate Titanate Film Deposited by Hydrothermal Method

Hasegawa Tomohito , Kitsunai Hiroshi , Kawashima Norimichi , Takeuchi Shinichi , Ishikawa Mutsuo , Kurosawa Minoru Kuribayashi

… As a result, it was confirmed that the probe has a center frequency of 16 MHz, a fractional bandwidth of 70%, and a distance resolution of better than about 130 μm without using an acoustic matching layer. …

Jpn J Appl Phys 46(7B), 4801-4804, 2007-07-30

The Japan Society of Applied Physics Cited by (6)
14

Dry Acoustic Microscopy for Non-Destructive Evaluation of Electronic Materials : Selection of a Solid Layer for High-Resolution Inspection [in Japanese]

TOHMYOH Hironori , SAKA Masumi

… This paper describes a way to select a solid layer for performing the high-resolution acoustic imaging of electronic materials under the dry environment. … A dry acoustic microscopy performs the transduction of broadband, high-frequency ultrasound via a solid layer inserted between water and a sample. …

Transactions of the Japan Society of Mechanical Engineers. A 72(724), 1832-1837, 2006-12-25

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15

Design and experimental study on acoustic properties of (0-3) composite materials for acoustic matching layer of air-coupled ultrasonic transducer [in Japanese]

Saito Kazuki , Nishihira Morimasa , Imano Kazuhiko

… The acoustic properties of (0-3) composite materials for acoustic matching layer of MHzrange air-coupled ultrasonic transducer are studied experimentally. … The acoustic theoretical model for elastic properties of composite materials. …

Journal of the Association of Materials Engineering for Resources 19(1/2), 11-17, 2006-11-00

IR
16

Acoustic Properties of Nanofoam Material and its Applied Ultrasonic Sensors [in Japanese]

HASHIMOTO Masahiko , NAGAHARA Hidetomo , SUGINOUCHI Takehiko

ナノフォームはゾルーゲル反応により形成される多孔質体であり、固体としては極めて低い音響インピーダンスを有するため、空中超音波センサ部材として有望な材料である。本報告ではシリカ骨格を有するナノフォーム材料の基本的音響特性の計測結果とナノフォーム材料を応用した超音波センサについて報告する。ナノフォーム材料とセラミック多孔体の2層構成とした音響整合層を持つ超音波センサを試作したところ、一般的な音響整合層 …

IEICE technical report. Ultrasonics 105(619), 29-34, 2006-02-21

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17

Polymer Acoustic Matching Layer for Broadband Ultrasonic Applications

TOHMYOH H.

J. Acoust. Soc. Amer. 120(1), 31-34, 2006

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18

Research and Development of Relaxor-Based Piezoelectric Materials and Their Application for Medical Echo Ultrasound [in Japanese]

YAMASHITA Yohachi

… In addition, many powders used for ultrasonic acoustic materials, such as lens, matching layer and backing are also introduced. … Some new materials, piezoelectric single crystals and low-attenuation acoustic lens material are also introduced. …

Journal of the Japan Society of Powder and Powder Metallurgy 52(12), 885-890, 2005-12-15

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19

520 Performance of the Dry Ultrasonic Visualization via the Acoustic Matching Layer [in Japanese]

TOHMYOH Hironori , SAKA Masumi , HIRAYAMA Hayato

Proceedings of the ... annual meeting of JSME/MMD 2005, 365-366, 2005-11-03

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20

Development of High-Sensitivity Ultrasonic Transducer in Air with Nanofoam Material

Nagahara Hidetomo , Hashida Takashi , Suzuki Masa-aki , Hashimoto Masahiko

… For a high-sensitivity ultrasonic transducer in air, it was considered that nanofoam be applied to its acoustic matching layer. … Since nanofoam has an extremely low acoustic impedance, it is effective for the acoustic matching layer of an ultrasonic transducer in air. …

Jpn J Appl Phys 44(6B), 4485-4489, 2005-06-15

The Japan Society of Applied Physics References (4) Cited by (1)

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