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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Issue 7 • Date July 2004

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Displaying Results 1 - 25 of 29
  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control [cover]

    Publication Year: 2004 , Page(s): 1 - 2
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  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control - Inside front cover

    Publication Year: 2004 , Page(s): 3
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  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control - Inside back cover

    Publication Year: 2004 , Page(s): 4
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  • Table of Contents

    Publication Year: 2004 , Page(s): 5 - 6
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  • Information for Contributors

    Publication Year: 2004 , Page(s): 769 - 773
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  • A multimedia example

    Publication Year: 2004 , Page(s): 773
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  • A multimedia example

    Publication Year: 2004 , Page(s): 774
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  • CALL FOR PAPERS - Special Issue on Micromachined Ultrasonic Transducers

    Publication Year: 2004 , Page(s): 775
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  • 2003 Achievement Award of the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society - James F. Greenleaf

    Publication Year: 2004 , Page(s): 777
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  • 2003 Distinguished Service Award of The IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society: William D. O'Brien, Jr.

    Publication Year: 2004 , Page(s): 778 - 779
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  • 2002 Outstanding Paper Award of the IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society

    Publication Year: 2004 , Page(s): 780 - 781
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  • A circuit simulation compatible surface acoustic wave interdigital tranducer macro-model

    Publication Year: 2004 , Page(s): 782 - 784
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  • Modeling of charge switching in ferroelectric capacitors

    Publication Year: 2004 , Page(s): 786 - 793
    Cited by:  Papers (3)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (407 KB) |  | HTML iconHTML  

    To simulate charge switching in ferroelectric capacitors, a pair of exponential growth and decay currents is mapped to the process of polarization reversal. This is based on the fact that these exponential currents [i.e., i = I/sub m/e/sup t///sup /spl tau//(t /spl les/ 0) and i = I/sub m/e/sup -t///sup /spl tau//(t /spl ges/ 0)], are completely specified by two constants I/sub m/ and /spl tau/ an... View full abstract»

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  • Longitudinal and transverse magnetoelectric voltage coefficients of magnetostrictive/ piezoelectric laminate composite: experiments

    Publication Year: 2004 , Page(s): 794 - 799
    Cited by:  Papers (9)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (410 KB) |  | HTML iconHTML  

    Magnetostrictive Terfenol-D (Tb/sub x/Dy/sub 1-x/Fe/sub 2/) and piezoelectric (Pb(Zr/sub 1-x/Ti/sub x/)O/sub 3/) magnetoelectric (ME) laminate composites have been investigated experimentally for various modes of operation: longitudinal magnetized/longitudinal polarized (L-L mode), transverse magnetized/longitudinal polarized (T-L mode), and transverse magnetized/transverse polarized (T-T mode) ME... View full abstract»

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  • Integrated catheter for 3-d intracardiac echo cardiography and ultrasound ablation

    Publication Year: 2004 , Page(s): 800 - 808
    Cited by:  Papers (14)  |  Patents (6)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1388 KB) |  | HTML iconHTML  

    A catheter device with integrated ultrasound imaging array and ultrasound ablation transducer is introduced. This device has been designed for use in interventional cardiac procedures in which the cardiac anatomy is first imaged using real-time three-dimensional (3-D) ultrasound, then ablated to treat arrhythmias. The imaging array includes 112 elements operating at 5.4 MHz arranged in a 2-D matri... View full abstract»

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  • Characteristics of acoustic scattering from a double-layered micro shell for encapsulated drug delivery

    Publication Year: 2004 , Page(s): 808 - 820
    Request Permissions | Click to expandAbstract | PDF file iconPDF (419 KB) |  | HTML iconHTML  

    This work examines the characteristic differences in acoustic scattering between air-filled double-layered encapsulating (DLE) shells and air-filled single-layered encapsulating (SLE) shells. The analysis shows that the presence of an outer layer softer than the inner layer results in a shift of the first monopole of the reflectivity-frequency response to a higher frequency and a reduction in the ... View full abstract»

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  • A method for radiation-force localized drug delivery using gas-filled lipospheres

    Publication Year: 2004 , Page(s): 822 - 831
    Cited by:  Papers (23)  |  Patents (2)
    Multimedia
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1784 KB) |  | HTML iconHTML  

    We have developed a method using ultrasound and acoustically active lipospheres (AALs) that might be used to deliver bioactive substances to the vascular endothelium. The AALs consist of a small gas bubble surrounded by a thick oil shell and enclosed by an outermost lipid layer. The AALs are similar to ultrasound contrast agents: they can be nondestructively deflected using ultrasound radiation fo... View full abstract»

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  • Broadband ultrasonic backscattering applied to nondestructive characterization of materials

    Publication Year: 2004 , Page(s): 832 - 838
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (509 KB) |  | HTML iconHTML  

    A simple method based on the spectrum features of the backscattered signal is proposed to the assessment of scatterers size. The method takes advantage of the band-limited response of the scattering media to an incident broadband pulse. The single to multiple scattering regime transition determines this limited frequency content, which is strongly related to scatterer size. The method is applied t... View full abstract»

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  • A physical interpretation of elastic guided-wave reflection from normal ends of a waveguide

    Publication Year: 2004 , Page(s): 838 - 847
    Request Permissions | Click to expandAbstract | PDF file iconPDF (251 KB) |  | HTML iconHTML  

    Studied in this paper are two-dimensional guided wave reflections from normal boundaries in an isotropic elastic media. By making use of the transverse resonance concept, the reflections of the waveguide modes from normal interfaces are interrogated. A general condition is obtained under which the guided waves in an isotropic medium will undergo no mode conversion when interaction occurs with a no... View full abstract»

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  • Design of miniaturized RF SAW duplexer package

    Publication Year: 2004 , Page(s): 849 - 858
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (369 KB) |  | HTML iconHTML  

    This paper provides a comprehensive methodology for accurate analysis and design of miniaturized radio frequency (RF) surface acoustic wave (SAW) duplexer package. Full-wave analysis based on the three dimensional (3-D) finite element method (FEM) is applied to get the package model. The die model. is obtained by combining the parasitics and acoustics models. The modeling of bonding wire is also d... View full abstract»

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  • New SPUDT cell structures

    Publication Year: 2004 , Page(s): 858 - 863
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (553 KB) |  | HTML iconHTML  

    The present paper describes single-phase unidirectional transducers (SPUDT) cells with all fingers wider than A/S while maintaining the unidirectional effect. The first solution is related to a SPUDT consisting of /spl lambda//4 and /spl lambda//2 wide fingers arranged in two tracks. Each track has no significant unidirectional effect. Both tracks form a wave-guide, and the waveguide coupling gene... View full abstract»

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  • Piezoelectric ceramic rectangular transducers in flexural vibration

    Publication Year: 2004 , Page(s): 865 - 870
    Cited by:  Papers (1)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (261 KB) |  | HTML iconHTML  

    Based on the equivalent elastic method and coupled vibration theory, an analytic method is presented to study the flexural vibration of rectangular transducers consisting of piezoelectric ceramic thin plates. By introducing a mechanical coupling coefficient, the flexural vibration of the piezoelectric ceramic rectangular thin plate is reduced to two simple, one-dimensional flexural vibrations of n... View full abstract»

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  • A torsional transducer through in-plane shearing of paired planar piezoelectric elements

    Publication Year: 2004 , Page(s): 871 - 878
    Cited by:  Papers (6)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (1433 KB) |  | HTML iconHTML  

    A torsional microtransducer for high-power applications was developed using standard bulk lead zirconium titanate (PZT) placed upon a small rectangular prism made from phosphor bronze, with a tapered conical end serving as a horn and a machined interior to improve the actuator's response. Torsion was obtained from a prototype at the design frequency of 192 kHz as well as over a wide range of frequ... View full abstract»

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  • Generation of higher pressure pulses at the surface of piezo-composite materials using electrical pre-strain

    Publication Year: 2004 , Page(s): 878 - 885
    Cited by:  Papers (2)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (354 KB) |  | HTML iconHTML  

    New clinical concepts in lithotripsy demand smaller shock heads. Reducing the size of piezoelectric shock heads requires increasing the surface pressure of each transducer so that the total pressure at the focus remains the same. A new method allowing generation of large surface pressures is described. The hypothesis is that piezoelectric plots in piezo-composite material are more fragile in exten... View full abstract»

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  • Forward-viewing CMUT arrays for medical imaging

    Publication Year: 2004 , Page(s): 887 - 895
    Cited by:  Papers (25)  |  Patents (8)
    Request Permissions | Click to expandAbstract | PDF file iconPDF (800 KB) |  | HTML iconHTML  

    This paper reports the design and testing of forward-viewing annular arrays fabricated using capacitive micromachined ultrasonic transducer (CMUT) technology. Recent research studies have shown that CMUTs have broad frequency bandwidth and high-transduction efficiency. One- and two-dimensional CMUT arrays of various sizes already have been fabricated, and their viability for medical imaging applic... View full abstract»

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Aims & Scope

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control focuses on the theory, design, and application on generation, transmission, and detection of bulk and surface mechanical waves.

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Meet Our Editors

Editor-in-Chief
Steven Freear
s.freear@leeds.ac.uk