2007 IEEE Ultrasonics Symposium Proceedings最新文献_第4页

P0-9 A Lateral Field Excited Acoustic Wave Sensor for the Detection of Saxitoxin in Water p0 - 9a型横向场激发声波传感器检测水中蛤蚌毒素

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.306

M. Wark, B. Kalanyan, L. Ellis, J. Fick, L. Connell, D. Neivandt, J. Vetelino

引用次数: 21

6E-4 Acoustic ID-Tags for Under Water Use 6E-4水下使用声学id标签

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.132

A. Rønnekleiv

{"title":"6E-4 Acoustic ID-Tags for Under Water Use","authors":"A. Rønnekleiv","doi":"10.1109/ULTSYM.2007.132","DOIUrl":"https://doi.org/10.1109/ULTSYM.2007.132","url":null,"abstract":"Passive ID-tags that could be read remotely is an area of growing commercial interest. Here we look at a small tag in the low MHz range for under water use, based on acoustic resonances. It could be used in sea water, where RF-signals are heavily damped, and it could easily be made small, as there is no need for bulky antennas and hence will have an advantage over the more common RF-ID-tags based on electromagnetic waves. The tag is intended for an as yet unspecified laboratory use, where we may assume a moderate distance between tag and detector system. As a design example we look at a circular tag with diameter 300 micrometer, and resonances in the 1 to 4 MHz range. The resonators are circular nitride membranes over an evacuated cavity in the tag substrate. We review the analysis of the resonators, which is based on coupling of the acoustic vibration modes of the membranes and the tag substrate through the fluid A detailed response of an ID-tag with on the order of ten to twenty resonators may be found easily and fast from predetermined data for resonators and substrate. Both radiation losses and viscosity losses in water are included. It is found that resonator Q's are limited to about 20 in water at 4 MHz, and further that the viscosity leads to a small shift in the resonance frequencies. The number of identities for a tag design as discussed here could be in the range 50,000 to 100,000 or more.","PeriodicalId":6355,"journal":{"name":"2007 IEEE Ultrasonics Symposium Proceedings","volume":"24 1","pages":"492-495"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88044105","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: 0

3E-4 Plane-Wave-Expansion Method for Lamb Wave Propagation in Plate with Two-Dimensional Phononic Crystal Layer Coated on Uniform Substrate 均匀基片上涂覆二维声子晶体层的Lamb波传播的平面波扩展方法

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.56

Z. Hou, B. Assouar

引用次数: 3

11F-5 High-Frequency Piezoelectric PZT Film Micromachined Ultrasonic Transducers 11F-5高频压电PZT薄膜微机械超声换能器

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.267

Q.F. Zhou, D. Wu, F. Djuth, C.G. Liu, K. Shung

引用次数: 1

P1F-4 Revisiting LGT Dielectric Constants and Temperature Coefficients Up to 120°C 重新审视LGT介电常数和温度系数高达120°C

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.351

P. Davulis, B. Sturtevant, S. Duy, M. D. da Cunha

{"title":"P1F-4 Revisiting LGT Dielectric Constants and Temperature Coefficients Up to 120°C","authors":"P. Davulis, B. Sturtevant, S. Duy, M. D. da Cunha","doi":"10.1109/ULTSYM.2007.351","DOIUrl":"https://doi.org/10.1109/ULTSYM.2007.351","url":null,"abstract":"Langatate (LGT) has been grown and characterized more intensively in the past decade and the reported acoustic wave properties of this relatively recent crystal have shown significant variations among different groups. Yet to be determined is how much of this dissimilarity is attributable to variations in the growth process or to different measurement techniques. For the dielectric permittivity, in particular, previously published values of epsivS 11/epsiv0 differ from each other by as much as 33% while those of epsivS 33/epsiv0 differ by up to 25% at room temperature. In this work, the dielectric constants of LGT are determined by measurements made from room temperature (25degC) up to 120degC. The permittivity was extracted from capacitance measurements using a precision LCR meter and computer controlled oven. LGT plates oriented along the X, Y, and Z crystalline axes were cut, ground, and polished to an optical finish at the University of Maine's Microwave Acoustic Lab facilities. The capacitor electrodes were deposited using an aerosol spray method chosen for ease of fabrication and to allow for multiple uses of each of the LGT sample. The measured relative dielectric constants reported in this work are: epsivS 11/epsiv0 is 17.69 +/- 0.30 and epsivS 33/epsiv0 is 70.73 +/- 1.24, which are 11.5% and 7.3% lower then an average of previously published values. The paper discusses the data provided and the associated uncertainties.","PeriodicalId":6355,"journal":{"name":"2007 IEEE Ultrasonics Symposium Proceedings","volume":"6 1","pages":"1397-1400"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86546207","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: 7

P2G-4 Suppression of Acoustic Energy Leakage in FBARs with Al Bottom Electrode: FEM Simulation and Experimental Results 铝底电极抑制fbar中P2G-4声能泄漏:有限元模拟与实验结果

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.417

R. Ohara, N. Yanase, T. Yasumoto, M. Kawase, S. Masuko, T. Ohno, K. Sano

引用次数: 8

10C-2 High Frequency Ultrasound Characterization of Blood Clotting Process: Results Obtained With Plasma and Whole Blood 10C-2血液凝固过程的高频超声表征:血浆和全血的结果

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.226

C. Plag, R. Libgot, Y. Gruel, F. Patat, F. Ossant

引用次数: 4

P0-12 Highly Oriented C-Axis 23° Tilted ZnO Films with High Quasi-Shear Mode Electromechanical Coupling Coefficients 具有高准剪切模式机电耦合系数的P0-12高取向c轴23°倾斜ZnO薄膜

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.309

T. Matsuo, T. Yanagitani, M. Matsukawa, Y. Watanabe

引用次数: 13

P5C-2 A New Convolution-Based Methodology to Simulate Ultrasound Images in a 2D / 3D Sector Format 一种新的基于卷积的二维/三维扇区格式超声图像模拟方法

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.564

Hang Gao, H. Choi, P. Claus, S. Boonen, G. van der Perre, W. Lauriks, J. D’hooge

引用次数: 8

12D-5 NDE of Adhesive Joints Using V(x,t) Data 用V(x,t)数据进行粘接接头的无损检测

2007 IEEE Ultrasonics Symposium Proceedings Pub Date : 2007-12-26 DOI: 10.1109/ULTSYM.2007.287

J. Sadler, S. Titov, R. Maev

引用次数: 0