Ultrasonics最新文献

{"title":"Parameter optimization of interdigital transducers for high-performance acoustofluidic devices","authors":"Yong Wang ,&nbsp;Ban Wang ,&nbsp;Luoke Hu ,&nbsp;Jingui Qian","doi":"10.1016/j.ultras.2025.107677","DOIUrl":"10.1016/j.ultras.2025.107677","url":null,"abstract":"<div><div>Microfluidic actuators based on surface acoustic waves (SAWs) typically operate at frequencies below 100 MHz, often neglecting the effect of interdigital transducer (IDT) parameters on device size, cost, and actuation performance. In this paper, we aim to optimize IDT parameters to improve fluidic actuation performance while maintaining a compact size, thereby enhancing the space utilization and reducing manufacturing cost. We systematically investigate the effects of IDT parameters, including wavelength, acoustic aperture, and the number of electrode pairs on fluidic actuation and explore the underlying mechanisms. Results show that increasing the number of electrode pairs and wavelength, or reducing the acoustic aperture width, enhances fluidic actuation performance. Additionally, fluid behaviors vary significantly with frequency. Above 80 MHz, the droplet pumping exhibits a jumping motion that requires a higher power, while jetting resembles the launch of liquid droplet projectile. Below 62 MHz, the droplet pumping combines a rolling and sliding motion, with jetting following a continuous water column along the Rayleigh angle. Moreover, the ejected liquid column size is determined by the acoustic aperture width when the droplet size exceeds the aperture width. Based on these findings, we propose an optimized IDT design guideline: a wavelength range of 64 to 80 µm, 40 to 60 electrode pairs, and an acoustic aperture width of 4 to 6 mm, to achieve optimal fluidic actuation performance while maintaining a compact size for most biomedical applications.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107677"},"PeriodicalIF":3.8,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of bismuth silicon oxide for high temperature ultrasound sensing","authors":"Nicholas Garcia ,&nbsp;Huaiyu Wu ,&nbsp;Quinn Fonner ,&nbsp;Howuk Kim ,&nbsp;Fapeng Yu ,&nbsp;Shujun Zhang ,&nbsp;Xiaoning Jiang","doi":"10.1016/j.ultras.2025.107671","DOIUrl":"10.1016/j.ultras.2025.107671","url":null,"abstract":"<div><div>Clean energy production continues to grow as an international priority. Solar and nuclear power plants are being designed to operate at high temperatures, and some Generation IV nuclear plants are expected to operate at or above 850 °C. Monitoring of such structures requires advanced sensors able to survive in environments that would easily destroy conventional sensors. Bismuth Silicon Oxide (Bi₁₂SiO₂₀; BSO) is gaining attention as a robust piezoelectric material that can survive in extreme temperatures. In this work, we present a high temperature impedance and phase characterization of BSO transducers up to 600 °C. We also conducted experiments with 5.1 × 5.1 × 1 mm³ BSO face-shear transducers to generate quasi-shear horizontal waves in 3 mm thick steel bars. We performed high temperature acoustic transmission and receiving tests at temperatures up to 650 °C. BSO retains its material properties well until around 500 °C before experiencing major rises in capacitance and dielectric loss (measured at 100 kHz). The BSO transducers also experienced a shift in transmitting frequency from 209—213 kHz at room temperature to approximately 195 kHz at 650 °C. BSO was able to recover its material properties as environmental temperature decreased, and a cooldown test revealed that all properties returned to normal ranges when the sample was cooled. BSO was also able to perform continuously as an ultrasonic emitter and receiver on structural steel from room temperature to 650 °C. Additionally, we conducted multiple defect detection tests using an artificial damage, and BSO was able to detect damage-induced waves up to 600 °C with ≤10 % error. These findings suggest BSO is a material capable of performing high temperature ultrasonic sensing with durability and survivability.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107671"},"PeriodicalIF":3.8,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a novel traveling wave rotary ultrasonic motor by simultaneous planar-cylindrical drive with approach improved output performance","authors":"Ebrahim Abolghasemi ,&nbsp;Ahmad Reza khoogar ,&nbsp;Mehrdad Khandaei","doi":"10.1016/j.ultras.2025.107656","DOIUrl":"10.1016/j.ultras.2025.107656","url":null,"abstract":"<div><div>In this study proposes an ultrasonic motor to improve output parameters, with a focus on enhancing the torque density and power density. The planar and cylindrical bending modes are combined for a simultaneous drive in the proposed motor. Ultrasonic motors with planar drives often have an unusable space in the axial direction. This study proposed the design of a cylindrical stator with the same frequency as the planar drive to make optimal use of this space and improve the output parameters. The cylindrical stator was designed based on the operating frequency of planar stators in previous studies and was simulated using the finite element method (FEM). Once a prototype model had been constructed and tested, the experimental data and numerical results were compared. The present study designed and used a high-voltage generator rather than a high-voltage amplifier. The speed and torque of the simultaneously driven motor were compared to those of the motor with a planar drive. The results showed that the motor with simultaneous drive increases 2.5 and 3.4 times in speed and torque, respectively. The torque density and power density ratios were also 2 and 5 higher, respectively. At the same time, the proposed motor had a slight increase in weight, dimensions, and volume.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107656"},"PeriodicalIF":3.8,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Renal denervation guided and ablated by noninvasive ultrasound in canines","authors":"Xiaoyu Zheng ,&nbsp;Shunkang Rong ,&nbsp;Qingyao Liao ,&nbsp;Qinghua Fang ,&nbsp;Xiaodong Wang ,&nbsp;Yake Lou ,&nbsp;Qiaoqiao Li ,&nbsp;Jun Qian ,&nbsp;Junling Wang ,&nbsp;Yue Wang ,&nbsp;Xin Zhao ,&nbsp;Bo Xiong ,&nbsp;Liang Wang ,&nbsp;Hua Li ,&nbsp;Yuanqing Yao ,&nbsp;Que Zhu ,&nbsp;Yonghong Jiang ,&nbsp;Gang Yang ,&nbsp;Ling Xiao ,&nbsp;Changsheng Ma ,&nbsp;Jing Huang","doi":"10.1016/j.ultras.2025.107666","DOIUrl":"10.1016/j.ultras.2025.107666","url":null,"abstract":"<div><div>This study aimed to explore the application and efficacy of a novel stimulation-guided, targeting ablation, and efficacy verification technique based on dual-frequency extracorporeal focused ultrasound interference for renal denervation (RDN) in treating resistant hypertension. Existing RDN techniques are often invasive or lack clear intervention targets and efficacy endpoints, limiting their effectiveness and safety. To address these limitations, we developed a technique using dual-frequency extracorporeal focused ultrasound interference, which modulates acoustic radiation force to stimulate renal nerves for targeted RDN. Initial validation in C57 mice sciatic nerves demonstrated that differential-frequency stimulation (Δf = 40 kHz) achieved effective neuromuscular activation (leg twitching with recorded action potentials) at 0.25 W acoustic power, whereas same-frequency stimulation required significantly higher power (1.25 W) to elicit responses (P &lt; 0.001 for action potential amplitude comparison).In old beagles, acoustic stimulation (with stimulation parameters set at 50 W acoustic power and a Δf = 10 kHz,) was applied across multiple cross-sectional quadrants of the main renal artery to identify and selectively ablate significant blood pressure response sites (≥5 mmHg). Further RDN was achieved through re-stimulation verification and supplementary ablation. Our findings reveal a predominant distribution of positive reaction sites in the proximal segment of the renal artery and that nearly one-third of the response sites still reacted to stimulation after ablation, necessitating additional ablation. When compared to anatomic landmark RDN method, the stimulate-guided RDN demonstrated notably superior reductions in systolic BP (14.4 ± 3.1 vs 9.6 ± 4.4 mmHg, P = 0.026) on day 28. Notably, the implementation of this method did not result in any serious complications. Our study suggests that nerve acoustic stimulation guidance has the potential to be further explored as a non-invasive RDN strategy for targeted ablation and efficacy validation in clinical settings.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107666"},"PeriodicalIF":3.8,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards improving breast cancer detection through multi-modal image generation","authors":"Sahar Almahfouz Nasser ,&nbsp;Ashutosh Sharma ,&nbsp;Anmol Saraf ,&nbsp;Amruta Parulekar ,&nbsp;Purvi Haria ,&nbsp;Amit Sethi","doi":"10.1016/j.ultras.2025.107655","DOIUrl":"10.1016/j.ultras.2025.107655","url":null,"abstract":"<div><div>Ultrasound (US) imaging is real-time, less expensive, and more portable, compared to mammography, which makes it better suited for screening in resource-constrained settings and intra-operative imaging. However, US has lower spatial resolution and more artifacts compared to mammograms. This research aims to address these limitations by providing surgeons with mammogram-like image quality in real-time from US images. Previous approaches to US enhancement have discarded the artifacts created by interaction pattern between ultrasound and tissue by treating them as noise. By contrast, we recognize the value of the artifacts as wave interference patterns (WIP) that capture important tissue characteristics. In particular, we utilize the Stride software to numerically solve the forward model by generating US images from mammograms by solving wave-equations and add the high-frequency components separately to produce realistic US images. This forward generation itself is of clinical value because sometimes US acts as a complementary imaging modality to disambiguate cases that are difficult to diagnose using mammograms alone. Then, we train a generative adversarial network (GAN) for the obtaining mammogram-quality images from US. The resultant images have considerably more discernible details than the original US images. With further improvements, both forward and backward image generation can help simulate complementary modality on-the-fly to aid better breast cancer diagnosis in a cost-effective and real-time manner.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107655"},"PeriodicalIF":3.8,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Passive cavitation mapping for biomedical applications using higher order delay multiply and sum beamformer with linear complexity","authors":"Christian Marinus Huber ,&nbsp;Nicole Dorsch ,&nbsp;Helmut Ermert ,&nbsp;Martin Vossiek ,&nbsp;Ingrid Ullmann ,&nbsp;Stefan Lyer","doi":"10.1016/j.ultras.2025.107653","DOIUrl":"10.1016/j.ultras.2025.107653","url":null,"abstract":"<div><div>Ultrasound-induced cavitation can be used in various biomedical therapies, including localized drug delivery, sonoporation, gene transfer, noninvasive sonothrombolysis, lithotripsy, and histotripsy. It can also enhance thermal ablation of tumors and facilitate trans-blood–brain-barrier treatments. Accurate monitoring of cavitation activity, including dose and location, is essential for the safe and effective application of these therapies. Passive cavitation mapping (PCM) is a key technique used to achieve this. However, conventional Delay and Sum (DAS) beamforming methods suffer from low resolution and high side-lobe levels in standard diagnostic ultrasound transducer, limiting their effectiveness or are computationally expensive, in the case of robust capon beamformer (RCB). To address these challenges, we propose a higher-order nonlinear Delay Multiply and Sum (DMAS) beamformer for improved passive cavitation mapping. Our approach utilizes a novel implementation with linear complexity, using a determinant from symmetrical polynomials. Simulation and experimental results demonstrate that the proposed method enhances both axial and lateral point spread function, resolution and increasing image quality, while exhibiting linear complexity. These improvements suggest that higher-order nonlinear beamforming is a promising advancement for more accurate and reliable cavitation monitoring in biomedical applications.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107653"},"PeriodicalIF":3.8,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A procedure for simulation-assisted identification of ultrasonic wave attenuation in heterogeneous materials and its application to the detection of fracture in concrete beams","authors":"Erwin Wojtczak,&nbsp;Magdalena Rucka","doi":"10.1016/j.ultras.2025.107658","DOIUrl":"10.1016/j.ultras.2025.107658","url":null,"abstract":"<div><div>In this study, a novel procedure for identification of ultrasonic wave attenuation in heterogeneous materials based on signal energy was presented. The main objective was to develop a method for simple and robust determination of wave characteristics for further use in numerical modelling of ultrasonic wave propagation including attenuation of signals. Experimental investigations supported by numerical simulations were proposed as an approach to determine the mass proportionality coefficient in the Rayleigh proportional damping model. A number of concrete samples with different sensor configurations were investigated to prove the efficiency of the developed algorithm. The limitations of the established approach were characterized, specifically the maximum frequency that can be considered should be determined in advance. The ability of the proposed method to detect fracture in concrete samples under three-point bending was initially verified for further development of the attenuation-based diagnostic technique.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107658"},"PeriodicalIF":3.8,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Viscoelastic characterization of liquids using ultrasonic shear-waves generated by the internal reflection approach","authors":"Paulo O. Formigoni ,&nbsp;Ediguer E. Franco ,&nbsp;Carlos A.B. Reyna ,&nbsp;Marcos S.G. Tsuzuki ,&nbsp;Flávio Buiochi","doi":"10.1016/j.ultras.2025.107643","DOIUrl":"10.1016/j.ultras.2025.107643","url":null,"abstract":"<div><div>In this work, an implementation of the ultrasonic shear wave reflectometry technique for the viscoelastic characterization of liquids is reported. An alternative approach for shear wave generation was implemented. It employees a mode conversion inside a prism, avoiding the need for fluid delay lines. This approach provided shear waves without spurious echoes and good SNR in a wide frequency range. A measurement cell was implemented and its operation tested with glycerin and hydraulic oil samples. The cell allowed the determination of the complex shear modulus and viscosity in the frequency range of 0.36-6.1 MHz. The viscosity values calculated by two different methodologies led to deviations less than 16% in the case of glycerin and 40% in the case of Hydra-68, when compared to the values obtained with conventional viscometry. The experimental results showed that the viscoelastic behavior of the samples fitted well with the Kelvin–Voigt model.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107643"},"PeriodicalIF":3.8,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasonic characterization and mechanical performance of self-compacting concrete in fresh and hardened states","authors":"Mouhcine Benaicha ,&nbsp;Olivier Jalbaud ,&nbsp;Yves Burtschell","doi":"10.1016/j.ultras.2025.107657","DOIUrl":"10.1016/j.ultras.2025.107657","url":null,"abstract":"<div><div>This study provides a thorough evaluation of self-compacting concrete (SCC) properties in both its fresh and hardened states using advanced ultrasonic testing techniques. While existing research has offered valuable insights into SCC characteristics, a systematic analysis correlating ultrasonic parameters with both rheological and mechanical properties has been lacking. This research addresses this gap through extensive testing and analysis of critical parameters, including air content, water absorption, plastic viscosity, yield stress, density, compressive strength, and Young’s modulus.</div><div>Our findings reveal that ultrasonic velocity exhibits strong positive correlations with plastic viscosity (<em>R² = 0.95</em>), yield stress (<em>R² = 0.97</em>), and fresh density (<em>R² = 0.99</em>). Increased plastic viscosity and yield stress are associated with higher ultrasonic velocity, indicating enhanced internal consistency and material integrity. Similarly, fresh density positively correlates with ultrasonic velocity, reflecting improved compactness and uniformity. These relationships underscore the significance of these parameters in influencing SCC’s ultrasonic characteristics.</div><div>In the hardened state, ultrasonic velocity shows a robust positive correlation with compressive strength (<em>R² = 0.98 to 0.99</em>) and Young’s modulus (<em>R² = 0.96 to 0.98</em>), suggesting that a denser and stiffer concrete matrix facilitates better ultrasonic wave transmission, indicative of superior structural integrity. These insights are instrumental for optimizing SCC mixture designs, enhancing both performance and durability in construction applications.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"152 ","pages":"Article 107657"},"PeriodicalIF":3.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One shot, one SoS: A real-time, single-shot global speed of sound estimator","authors":"Pat De la Torre,&nbsp;Di Xiao,&nbsp;Alfred C.H. Yu","doi":"10.1016/j.ultras.2025.107612","DOIUrl":"10.1016/j.ultras.2025.107612","url":null,"abstract":"<div><div>Speed of sound (SoS), or the propagation speed of acoustic waves through a medium, is an intrinsic property of human tissue and has emerged as a new biomarker in health diagnostics. Alas, no existing technique has practically demonstrated that the tissue SoS can be robustly measured from a single pulse-echo transmission with an imaging transducer, so incorporating SoS estimation into the ultrasound imaging pipeline remains technically challenging. In this paper, we propose a novel global SoS estimation algorithm that requires only a single steered plane wave transmission for operation. Our single-shot framework derives the SoS estimate by 1) calculating each pixel’s pre-beamformed sum of normalized autocorrelation coefficients (SNAC) derived from the time-delayed channel data ensemble for an assumed SoS; 2) constructing a loss metric that is defined as, for different SoS candidates, the negated total SNAC over different pixels; 3) finding the SoS with the minimum loss value. Our single-shot SoS estimator was implemented in real-time (50 ms processing time) on a portable ultrasound research scanner. It was tested <em>in vitro</em> using agar staircase phantoms (SoS range: 1508–1682 m/s) and <em>in vivo</em> using svelte human calves (SoS range: 1573–1589 m/s). All SoS estimates were validated with reference through-transmission measurements. Results show that our framework yielded accurate SoS estimates with a small mean signed difference (MSD) <em>in vitro</em> (0.4 ± 6.5 m/s) and <em>in vivo</em> (3.8 ± 15.7 m/s). When the framework was extended to a 10-angle multi-transmission sequence, its SoS estimation performance was further improved with a smaller MSD (0.2 ± 2.0 m/s). The advent of the proposed single-shot SoS estimator can help advance the emerging use of SoS in tissue characterization and improve other imaging processes that are influenced by SoS, such as beamforming and Doppler estimation.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"153 ","pages":"Article 107612"},"PeriodicalIF":3.8,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}