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IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

Issue 6 • Date June 2004

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Displaying Results 1 - 21 of 21
  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control - Front cover

    Publication Year: 2004, Page(s):1 - 2
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  • [Inside front cover]

    Publication Year: 2004, Page(s): 3
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  • [Inside back cover]

    Publication Year: 2004, Page(s): 4
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  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control - Table of contents

    Publication Year: 2004, Page(s):5 - 6
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  • Information for contributors with multimedia addition

    Publication Year: 2004, Page(s):645 - 649
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  • A multimedia example

    Publication Year: 2004, Page(s): 650
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  • Call for papers special issue on micromachined ultrasonic transducers

    Publication Year: 2004, Page(s): 651
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  • Measurement of dynamic end-to-end cavity phase shifts in cesium-fountain frequency standards

    Publication Year: 2004, Page(s):652 - 653
    Cited by:  Papers (1)
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  • Finite element modelling of nanostructured piezoelectric resonators (NAPIERs)

    Publication Year: 2004, Page(s):654 - 662
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB) | HTML iconHTML

    A new modification to the traditional piezoelectric thin film bulk acoustic wave resonator (FBAR) and solidly mounted acoustic wave resonator (SMR) is proven to significantly improve their performances. The proposed design involves the surface micro/nano structuring of planar piezoelectric thin films to realize an array of a large number of rod-like structures. In contrast to the plate-like thickn... View full abstract»

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  • Fabrication of modified lead titanate piezoceramics with zero temperature coefficient and its application on SAW devices

    Publication Year: 2004, Page(s):663 - 667
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB) | HTML iconHTML

    The Samarium-modified, lead titanate ceramics with a composition of (Pb/sub 0.67/Ca/sub 0.15/Sr/sub 0.06/Sm/sub 0.08/) (Ti/sub 0.98/Mn/sub 0.02/)O/sub 3/ were prepared by conventional mixed-oxide method. By properly varying the sintering and poling conditions, the samples with zero temperature coefficient of resonant frequency were fabricated. The piezoelectric and dielectric properties were measu... View full abstract»

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  • Contact analysis and mathematical modeling of traveling wave ultrasonic motors

    Publication Year: 2004, Page(s):668 - 679
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (698 KB) | HTML iconHTML

    An analysis of the contact layer and a mathematical modeling of traveling wave ultrasonic motors (TWUM) are presented for the guidance of the design of contact layer and the analyses of the influence of the compressive force and contact layer on motor performance. The proposed model starts from a model previously studied but differs from that model in that it adds the analysis of the contact layer... View full abstract»

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  • An ultrasonic motor driven by the phase-velocity difference between two traveling waves

    Publication Year: 2004, Page(s):680 - 685
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (602 KB) | HTML iconHTML

    This paper presents a new ultrasonic motor in which the rotor rotation speed is locked by the phase-velocity difference between the two traveling waves propagating on the stator and the rotor. First, the unique construction to excite two traveling waves both in the stator and the rotor is described. Then, the operation principle of the present motor is revealed by our careful experiments. Dynamics... View full abstract»

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  • Development of an improved calibration method for the LFB ultrasonic material characterization system

    Publication Year: 2004, Page(s):686 - 694
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (643 KB) | HTML iconHTML

    We investigated standard specimens for accurately calibrating the line-focus-beam ultrasonic material characterization (LFB-UMC) system without system dependencies. We evaluated several types of lithium tantalate (LiTaO/sub 3/) substrates using two LFB-UMC systems with different device/system characteristics to measure and calibrate the propagation characteristics of the leaky surface acoustic wav... View full abstract»

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  • Elastic, dielectric, and piezoelectric losses in piezoceramics: how it works all together

    Publication Year: 2004, Page(s):695 - 707
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1214 KB) | HTML iconHTML

    The quality factor along with electromechanical coupling coefficient (CEMC) is commonly used as a measure of the energy efficiency of a piezoelectric transducer (PT) working as an energy converter. Losses in piezoceramics are phenomenologically considered to have three coupled mechanisms: dielectric, elastic, and piezoelectric. Their cumulative performance first of all determines the PT quality fa... View full abstract»

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  • Improved parametric imaging of scatterer size estimates using angular compounding

    Publication Year: 2004, Page(s):708 - 715
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1728 KB) | HTML iconHTML

    The feasibility of estimating and imaging scatterer size using backscattered ultrasound signals and spectral analysis techniques was demonstrated previously. In many cases, size estimation, although computationally intensive, has proven to be useful for monitoring, diagnosing, and studying disease. However, a difficulty that is encountered in imaging scatterer size is the large estimator variance ... View full abstract»

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  • Linear approach to axial resolution in elasticity imaging

    Publication Year: 2004, Page(s):716 - 725
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1067 KB) | HTML iconHTML

    Thus far axial resolution in elasticity imaging has been addressed only empirically. No clear analytical approaches have emerged because the estimator is nonlinear in the data, correlation functions are nonstationary, and system responses vary spatially. This paper describes a linear systems approach based on a small-strain impulse approximation that results in the derivation of a local impulse re... View full abstract»

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  • Controlled ultrasound tissue erosion

    Publication Year: 2004, Page(s):726 - 736
    Cited by:  Papers (3)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1292 KB) | HTML iconHTML Multimedia Media

    The ability of ultrasound to produce highly controlled tissue erosion was investigated. This study is motivated by the need to develop a noninvasive procedure to perforate the neonatal atrial septum as the first step in treatment of hypoplastic left heart syndrome. A total of 232 holes were generated in 40 pieces of excised porcine atrial wall by a 788 kHz single-element transducer. The effects of... View full abstract»

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  • Measurement of the material properties of viscous liquids using ultrasonic guided waves

    Publication Year: 2004, Page(s):737 - 747
    Cited by:  Papers (9)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (741 KB) | HTML iconHTML

    The theoretical basis for a testing tool in the form of a circular waveguide for measuring both the dynamic viscosity and the longitudinal bulk velocity of viscous liquids is presented. It is based on the measurements of the attenuation of the fundamental torsional mode, T(0,1), and the fundamental longitudinal mode, L(0,1), of the waveguide when immersed in the liquid. The modeling techniques to ... View full abstract»

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  • Evaluation of mass-produced commercial LiTaO/sub 3/ single crystals using the LFB ultrasonic material characterization system

    Publication Year: 2004, Page(s):748 - 755
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB) | HTML iconHTML

    A mass-production line of lithium tantalate (LiTaO/sub 3/) crystals with a maximum charge number of 60 for surface acoustic wave (SAW) devices was evaluated with the line-focus-beam (LFB) ultrasonic material characterization system. Some serious problems associated with chemical compositions were observed and resolved by measuring the velocities of Rayleigh-type leaky surface acoustic waves (LSAWs... View full abstract»

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  • Directional scholte wave generation and detection using interdigital capacitive micromachined ultrasonic transducers

    Publication Year: 2004, Page(s):756 - 764
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1274 KB) | HTML iconHTML

    Directional generation and detection of Scholte waves and other guided modes in liquids and microfluidic channels by capacitive micromachined ultrasonic transducers (cMUTs) is reported. An interdigital transducer structure along with a phased-excitation scheme is used to enhance the directionality of Scholte interface waves in microfluidic environments. Finite element models are developed to predi... View full abstract»

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  • A direct energy balance method for approximating envelope decay of oscillating MEMS structures

    Publication Year: 2004, Page(s):765 - 767
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (124 KB) | HTML iconHTML

    The real pole component (envelope decay coefficient) of all oscillating microelectromechanical systems (MEMS) structure is calculated directly in the energy domain without using an equation of motion. Similar to the simplified Rayleigh frequency calculation in which maximum potential and kinetic energy are equated, our method equates the initial minus dissipated energy to present energy. 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.

Full Aims & Scope

Meet Our Editors

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