1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)最新文献_第9页

SPUDT-based tunable resonant coupling of different acoustic channels 基于spudd的不同声道可调谐谐振耦合

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.662983

B. Sveshnikov, A. Shitvov

引用次数: 2

SAW filters with very high shape factor SAW滤波器具有非常高的形状因子

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.662981

V. B. Chvets, P. G. Ivanov, V. M. Makarov, V. S. Orlov

引用次数: 1

Resonant second-harmonic generation accompanying nonlinear Love-wave propagation in an isotropic waveguide 在各向同性波导中伴随非线性love波传播的共振二次谐波产生

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.663088

D. Xi

引用次数: 1

Evaluation of keratoprosthesis biointegration in situ with quantitative ultrasound backscatter microscopy 定量超声后向散射显微镜评价角膜假体原位生物整合

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.661770

A. Saied, B. Dehecq, M. Savoldelli, B. Briat, J. Legeais, G. Berger

引用次数: 0

Wave propagation in long compound acoustic transmission line: numerical simulation and measurement 长复合声传输线中的波传播:数值模拟与测量

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.663048

B. Tittmann, R. Lerch, H. Landes, S. Madden, H. Tavossi

引用次数: 1

A 128/spl times/128 ultrasonic transducer hybrid array 一种128/spl倍/128超声换能器混合阵列

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.663306

K. Erikson, A. Hairston, A. Nicoli, J. Stockwell, T. White

{"title":"A 128/spl times/128 ultrasonic transducer hybrid array","authors":"K. Erikson, A. Hairston, A. Nicoli, J. Stockwell, T. White","doi":"10.1109/ULTSYM.1997.663306","DOIUrl":"https://doi.org/10.1109/ULTSYM.1997.663306","url":null,"abstract":"Ultrasonic imaging in the low MHz frequency range with large, dense arrays presents many design and fabrication challenges. Conventional ultrasound systems use micro-coaxial cable to connect the array to the front end electronics. While coax technology has improved dramatically in the past decade, interconnecting 16384 array elements with separate wires remains a formidable challenge. In addition to this practical issue, the capacitance of a long coaxial cable (/spl sim/40 pF/m) is much larger than that of a typical 2D array element (<1 pF), creating a voltage divider that severely reduces the signal-to-noise ratio of the channel. A 2D composite piezoelectric receiver array bonded directly to four large custom integrated circuits is described. This 128/spl times/128 (16384 total) element Transducer Hybrid Array (THA) of 200 /spl mu/m unit cell spacing is intended for a 3D real-time imaging system for medical and underwater applications. By reducing the interconnect length to less than 20 /spl mu/m, cable capacitance is no longer a problem. Massively parallel, on-chip signal processing enables true real-time three-dimensional imaging. Favorable tradeoffs using composite piezoelectric materials, enabled by this high-density flip-chip interconnection technology are discussed.","PeriodicalId":6369,"journal":{"name":"1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)","volume":"115 1","pages":"1625-1629 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1997-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79192557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Propagation of acoustic waves in plates bordered with viscous liquid 声波在有粘性液体的板中的传播

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.663044

B. Zaitsev, V. Kunetsova, S. Joshi

{"title":"Propagation of acoustic waves in plates bordered with viscous liquid","authors":"B. Zaitsev, V. Kunetsova, S. Joshi","doi":"10.1109/ULTSYM.1997.663044","DOIUrl":"https://doi.org/10.1109/ULTSYM.1997.663044","url":null,"abstract":"This paper is concerned with the influence of a viscous liquid on the propagation of acoustic waves in thin plates of lithium niobate. The characteristics of the three lowest order wave modes that such a plate can support (zeroth order antisymmetric Lamb wave A/sub 0/, symmetric Lamb wave S/sub 6/, and quasi-shear-horizontal wave QSH/sub 6/) are investigated. It is assumed that the liquid is isotropic such that its viscous properties are described by two independent components of viscosity tensor /spl eta//sub 11/ and /spl eta//sub 44/. It is found that the attenuation of the waves depends primarily on the shear component of viscosity /spl eta//sub 44/. The influence of expansion component /spl eta//sub 11/ is negligible. The attenuation per unit length is proportional to (/spl eta//sub 44/)/sup 1/2 / and f/sup 1,3/, where f is the frequency of the wave. Under identical conditions, the lowest value of attenuation is for the S/sub 0/ mode, while the highest is for the A/sub 0/ mode. For example, for h//spl lambda/=0.025 (h=plate thickness, /spl lambda/=acoustic wavelength) and /spl eta//sub 44/=0.003 Ns/m/sup 2/, the attenuation in dB/cm at a frequency of 1 MHz for A/sub 0/, S/sub 0/ and QSH/sub 0/ modes is 13.5, 0.024, and 0.073, respectively. The above results indicate that the S/sub 0/ wave is most suitable for use in devices operating in contact with a viscous liquid. The results also show that by using the three different wave modes, one can develop a viscosity meter with a very wide measurable range of viscosity.","PeriodicalId":6369,"journal":{"name":"1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)","volume":"17 1","pages":"381-384 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1997-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82138540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Medical ultrasonic transducers with switchable frequency bands centered about f/sub 0/ and 2f/sub 0/ 以f/sub 0/和2f/sub 0/为中心的可切换频带的医用超声换能器

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.663314

T. R. Gururaja, A. Shurland, J. Chen

引用次数: 11

Ultrasound attenuation measurement of tissue in frequency range 2.5-40 MHz using a multi-resonance transducer 使用多共振换能器在2.5-40 MHz频率范围内测量组织的超声衰减

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.661789

N. Kudo, T. Kamataki, K. Yamamoto, H. Onozuka, T. Mikami, A. Kitabatake, Y. Ito, H. Kanda

引用次数: 6

Temperature-dependent characteristics of a density sensor based on Lamb waves generated with a P(VF/sub 2/-VF/sub 3/) film 基于P(VF/sub 2/-VF/sub 3/)薄膜产生Lamb波的密度传感器的温度依赖特性

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI: 10.1109/ULTSYM.1997.663041

L. Scandelari, N. Noury, P. Benech, E. Chamberod

引用次数: 0