IEEE Ultrasonics Ferroelectrics and Freq Control

  • Front Cover
    Posted on August 1, 2019 at 12:00 am

    Presents the front cover for this issue of the publication. […]

  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    Posted on August 1, 2019 at 12:00 am

    Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication. […]

  • Resonance Scattering of an Arbitrary Bessel Beam by a Spherical Object
    Posted on August 1, 2019 at 12:00 am

    In our prior work, multipole expansion coefficients of a Bessel beam of arbitrary order with respect to an object of arbitrary location was derived analytically and combined with the T-matrix method to numerically compute the scattering. The present work is extended to directly use the multipole expansion to calculate the scattering from an elastic spherical target. The incident Bessel beam is […]

  • Table of Contents
    Posted on August 1, 2019 at 12:00 am

    Presents the table of contents for this issue of the publication. […]

  • A Nonlinear Lumped Equivalent Circuit Model for a Single Uncollapsed Square CMUT Cell
    Posted on August 1, 2019 at 12:00 am

    An accurate nonlinear lumped equivalent circuit model is used for modeling of capacitive micromachined ultrasonic transducers (CMUTs). Finite-element analysis (FEA) is a powerful tool for the analysis of CMUT arrays with a small number of cells while with the harmonic balance (HB) analysis of the lumped equivalent circuit model, the entire behavior of a large-scale arbitrary CMUT array can be […]

  • Region-of-Interest-Based Closed-Loop Beamforming for Spinal Ultrasound Imaging
    Posted on August 1, 2019 at 12:00 am

    Clear visualization of spine structures in ultrasound imaging is difficult due to factors such as specular reflection, off-axis energy, and reverberation artifacts. The received channel data from the spine are often tilted even after delay correction, resulting in signal cancellation during the beamforming process. Conventional beamformers are not designed to tackle this issue. This paper […]

  • Acoustically Driven Micromixing: Effect of Transducer Geometry
    Posted on August 1, 2019 at 12:00 am

    The ability to drive efficient micromixing on a microfluidic platform is crucial for a wide range of lab-on-a-chip applications. Here, we investigate the ability of acoustic waves generated on different geometric surfaces (concave and convex) to enhance the micromixing efficiency in droplet acoustomicrofluidic systems, and, concomitantly, to reduce the power consumption in these devices for a […]

  • Debiasing-Based Noise Suppression for Ultrafast Ultrasound Microvessel Imaging
    Posted on August 1, 2019 at 12:00 am

    Ultrasound microvessel imaging (UMI) based on the combination of singular value decomposition (SVD) clutter filtering and ultrafast plane wave imaging has recently demonstrated significantly improved Doppler sensitivity, especially to small vessels that are invisible to conventional Doppler imaging. Practical implementation of UMI is hindered by the high computational cost associated with SVD and […]

  • Frequency Spectra of Coupling Vibration in High-Frequency Thickness-Shear ZnO Thin Film Resonator Applied in Sensing Field Based on the Hamilton Principle
    Posted on August 1, 2019 at 12:00 am

    Mode coupling vibration of a multilayered ZnO thin film bulk acoustic wave resonator (FBAR) with its c-axis along the wave propagation direction operating at the fundamental thickness-shear (TSh) mode is studied in this paper. The accurate dispersion curve from 3-D piezoelectric theory indicates that the operating TSh mode could couple to the flexural mode, which influences the performance of a […]

  • Nonlinear Shear Modulus Estimation With Bi-Axial Motion Registered Local Strain
    Posted on August 1, 2019 at 12:00 am

    Nonlinear elasticity imaging provides additional information about tissue behavior that is potentially diagnostic and avoids errors inherent in applying a linear elastic model to tissue under large strains. Nonlinear elasticity imaging is challenging to perform due to the large deformations required to obtain sufficient tissue strain to elicit nonlinear behavior. This work uses a method of axial […]

  • Sparse Wavenumber Recovery and Prediction of Anisotropic Guided Waves in Composites: A Comparative Study
    Posted on August 1, 2019 at 12:00 am

    Guided wave methodologies are among the established approaches for structural health monitoring (SHM). For guided wave data, being able to accurately estimate wave properties in the absence of ample measurements can greatly facilitate the often time-consuming and potentially expensive data acquisition procedure. Nevertheless, inherent complexities of the guided waves, including their multimodal […]

  • Scoliotic Imaging With a Novel Double-Sweep 2.5-Dimensional Extended Field-of-View Ultrasound
    Posted on August 1, 2019 at 12:00 am

    Extended field-of-view ultrasound (US EFOV) imaging is a technique used extensively in the clinical field to attain interpretable panorama of anatomy; 2.5-D US EFOV has recently been proposed for spine imaging. In the original 2.5-D US EFOV, it makes use of a six degrees-of-freedom positional sensor attached to the US probe to record the corresponding position of each B-scan. By combining the […]