IEEE Ultrasonics Ferroelectrics and Freq Control

  • Modeling and Electrode Design Optimizations of Plano-Plano Langasite Crystal Resonator
    Posted on September 1, 2019 at 12:00 am

    The 3-D finite-element model (FEM) of a Y-cut plano-plano langasite crystal thickness shear mode (TSM) resonator is presented, and Mindlin’s theory is used to investigate the optimal electrode shapes and sizes for langasite crystal resonator. Circular and elliptical electrodes of various arc lengths are studied to identify the most optimal electrode design configuration in order to achieve […]

  • IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    Posted on September 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. […]

  • High-SPL Air-Coupled Piezoelectric Micromachined Ultrasonic Transducers Based on 36% ScAlN Thin-Film
    Posted on September 1, 2019 at 12:00 am

    In this paper, air-coupled piezoelectric micromachined ultrasonic transducers (PMUTs) using 36% scandium-doped aluminum nitride (ScAlN) thin-film are presented. ScAlN is known to exhibit higher piezoelectric properties compared to pure AlN leading to significant performance improvements in various piezoelectric micro-electromechanical systems (MEMS) applications including PMUTs. Here, the […]

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

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

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

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

  • Combining Automatic Angle Correction and 3-D Tracking Doppler for the Assessment of Aortic Stenosis Severity
    Posted on September 1, 2019 at 12:00 am

    Aortic valve stenosis (AS) is a narrowing of the aortic valve opening, which causes increased load on the left ventricle. Untreated, this condition can eventually lead to heart failure and death. According to current recommendations, an accurate diagnosis of AS mandates the use of multiple acoustic windows to determine the highest velocity. Furthermore, the optimal positioning of both patient and […]

  • Analysis of the Directivity of Glass-Etalon Fabry–Pérot Ultrasound Sensors
    Posted on September 1, 2019 at 12:00 am

    Planar glass-etalon Fabry–Pérot (FP) optical ultrasound sensors offer an alternative to piezoelectric sensors for the measurements of high-intensity focused ultrasound (HIFU) fields and other metrological applications. In this work, a model of the frequency-dependent directional response of the FP sensor was developed using the global matrix method, treating the sensor as a […]

  • A Phantom-Based Assessment of Repeatability and Reproducibility of Transvaginal Quantitative Ultrasound
    Posted on September 1, 2019 at 12:00 am

    This article evaluated the repeatability and reproducibility (R&R) of quantitative ultrasound (QUS) biomarkers attenuation coefficient (AC) and backscatter coefficient (BSC) in transvaginal QUS reference phantoms for obstetric applications. Five phantoms were scanned by three sonographers according to the scanning protocol. Each sonographer scanned each phantom with four transvaginal […]

  • <inline-formula> <tex-math notation="LaTeX">$W$ </tex-math></inline-formula>-Band Vibrometer for Noncontact Thermoacoustic Imaging
    Posted on September 1, 2019 at 12:00 am

    Noncontact thermoacoustic imaging (TAI) has several desirable characteristics for applications such as explosive detection in high-water-content media. In this letter, we report a detection technique using millimeter-wave interferometry based on sensitive phase detection at ${W}$ -band. The displacement sensitivity of the proposed ${W}$ -band vibrometer at 95 GHz is of the order of 1 nm. We also […]

  • Cellular Bioeffect Investigations on Low-Intensity Pulsed Ultrasound and Sonoporation: Platform Design and Flow Cytometry Protocol
    Posted on September 1, 2019 at 12:00 am

    At low-intensity levels, ultrasound can potentially generate therapeutic effects on living cells, and it can trigger sonoporation when microbubbles (MBs) are present to facilitate drug delivery. Yet, our foundational knowledge of low-intensity pulsed ultrasound (LIPUS) and sonoporation remains to be critically weak because the pertinent cellular bioeffects have not been rigorously studied. In […]

  • Low-Frequency Vibration Energy Harvesting With Bidomain LiNbO<sub>3</sub> Single Crystals
    Posted on September 1, 2019 at 12:00 am

    Low-frequency vibration energy harvesting is becoming increasingly important for environmentally friendly and biomedical applications in order to power various wearable and implanted devices. In this paper, we propose the use of piezoelectric congruent LiNbO3 (LN) single crystals, with an engineered bidomain structure, as an alternative to the widely employed lead-based PZT. We thus compared […]

  • Optoacoustic Tissue Differentiation Using a Mach&#x2013;Zehnder Interferometer
    Posted on September 1, 2019 at 12:00 am

    Laser osteotomy offers a way to make precise and less traumatic cuts smaller than conventional mechanical bone surgery tools. To fully exploit the advantages of laser osteotomy over conventional osteotomy, real-time feedback to differentiate the hard bone from the surrounding soft tissues is desired. In this study, we differentiated various tissue types—hard and soft bone, fat, muscle, and […]