IEEE Ultrasonics Ferroelectrics and Freq Control
- Table of Contentson January 27, 2025 at 1:18 pm
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- IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control Publication Informationon January 27, 2025 at 1:18 pm
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- Front Coveron January 27, 2025 at 1:18 pm
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- A Unified Framework Combining Doppler-Based Motion Compensation, Harmonic Imaging, and Angular Coherence for High-Quality B-Mode in Ultrafast Echocardiographyon December 11, 2024 at 1:18 pm
Various methods have been proposed to enhance image quality in ultrafast ultrasound. Coherent compounding can improve image quality using multiple steered diverging transmits when motion occurring between transmits is corrected. Harmonic imaging has been adapted for ultrafast imaging to reduce clutter. Coherence-based approaches have also been shown to increase contrast in clinical settings by […]
- A 2-D Circular Array Transducer for Endoscopic Ultrasound Imaging of Tubeon December 5, 2024 at 1:18 pm
The concept of endoscopic ultrasound (EUS) has been introduced to nondestructive testing (NDT) for the inspection of tubular structure. However, the fixed normal focusing beam of the present EUS transducers obstructs imaging flexibility and limits the robustness of the inspection, particularly for planar reflectors. To address this challenge, a 2-D circular array (2-D CA) designed for 3-D […]
- Machine Learning-Enhanced Skull-Universal Acoustic Hologram for Efficient Transcranial Ultrasound Neuromodulation Across Varied Rodent Skullson December 2, 2024 at 1:17 pm
Ultrasound neuromodulation (UNM) has gained significant interest in brain science due to its noninvasive nature, precision, and deep brain stimulation capabilities. However, the skull poses challenges along the acoustic path, leading to beam distortion and necessitating effective acoustic aberration correction. Acoustic holograms used with single-element ultrasound transducers offer a promising […]
- Real-Time Full-Volume Row-Column Imagingon December 2, 2024 at 1:17 pm
An implementation of volumetric beamforming for row-column addressed (RCA) arrays is proposed, with optimizations for graphics processing units (GPUs). It is hypothesized that entire volumes can imaged in real-time by a consumer-class GPU at an emission rate $\geq 12$ kHz. A separable beamforming algorithm was used to reduce the number of calculations with a negligible impact on the image […]
- Cryogenic Characterization of Low-Loss Thin-Film Lithium Niobate on Sapphire Shear Horizontal Surface Acoustic Wave Deviceson November 21, 2024 at 1:22 pm
This article reports a cryogenic study on wideband shear horizontal surface acoustic wave (SH-SAW) devices based on an emerging Y-cut $\mathrm{LiNbO}_3 / \mathrm{SiO}_2 /$ sapphire lithium niobate on sapphire (LNOS) platform. To perform a comprehensive study, low-loss acoustic delay lines (ADLs) equipped with unidirectional transducers were designed with a wavelength ( $\lambda$ ) of $4 \mu […]
- A Review of Experimental Methods for Characterizing Ferroelectric Domain Dynamics in Relaxor-PbTiO3 Single Crystalson November 13, 2024 at 1:17 pm
Relaxor-based ferroelectric single crystals possess colossal piezoelectric and dielectric properties and have been attractive for a wide range of electromechanical applications including transducers, sensors, and actuators. However, domain dynamics of relaxor ferroelectric single crystals are still not fully understood despite significant progress in the last three decades, partly because of the […]
- TinyProbe: A Wearable 32-Channel Multimodal Wireless Ultrasound Probeon November 12, 2024 at 1:17 pm
The need for continuous monitoring of cardiorespiratory activity, blood pressure, bladder, muscle motion analysis, and more is pushing for research and development of wearable ultrasound (US) devices. In this context, there is a critical need for highly configurable, energy-efficient wearable US systems with wireless access to raw data and long battery life. Previous exploratory works have […]
- Design and Analysis of Guided Surface Acoustic Waves in ScAlN on Sapphire for Phononic Integrated Circuitson October 21, 2024 at 1:15 pm
This study presents a comprehensive dispersion analysis and characterization of guided surface acoustic waves (SAWs) in 30% scandium aluminum nitride (ScAlN) alloy thin films on sapphire. The solidly mounted platform, which supports the fundamental Rayleigh and Sezawa SAW modes, offers mechanical robustness and high electromechanical coupling ( $k_{t}^{2}$ ), while maintaining high confinement of […]
- A Heterogeneous Ultrasound Open Scanner for the Real-Time Implementation of Computationally Demanding Imaging Methodson October 4, 2024 at 1:16 pm
Ultrasound (US) open scanners have recently boosted the development and validation of novel imaging techniques. They are usually split into hardware- or software-oriented systems, depending on whether they process the echo data using embedded field programmable gate arrays (FPGAs)/digital signal processors (DSPs) or a graphics processing unit (GPU) on a host personal computer (PC). The goal of […]