SENSORS AND ACTUATORS A-PHYSICAL传感器与执行器A：物理
SENSORS AND ACTUATORS A-PHYSICAL(英文缩写 SENSOR ACTUAT A-PHYS),ISSN 0924-4247,eISSN 1873-3069,中文译名:传感器与执行器A：物理 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-09-28 至 2026-09-28，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 4.291 | Q1 |
| 2022 | 4.600 | Q1 |
| 2023 | 4.100 | Q1 |
| 2024 | 4.900 | Q1 |
| 2025 | 5.100 | Q1 |
SENSORS AND ACTUATORS A-PHYSICAL 最新收录文献
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1. Electrothermally Addressable Liquid Crystal Elastomer Microactuator Arrays with Integrated Microheaters.
PMID:日期:2026-10-16Liquid crystal elastomers (LCEs) are attractive for microscale actuation because they exhibit large, reversible, and programmable deformation. However, practical LCE microsystems remain difficult to realize due to challenges in fabricating discrete actuator arrays and achieving localized, electrically addressable actuation. Existing localized driving strategies often rely on optical stimulation, which is less practical for scalable integrated systems. In this work, we present an electrothermal LCE microactuation system enabled by lithographically integrated tungsten (W) microheaters. Surface-aligned LCE microactuators are integrated above dedicated serpentine heaters, and a column-addressable architecture is used to demonstrate selectively addressable actuation within a microarray. The heater voltage-temperature response is established through resistance-based calibration and incorporated into a finite-element electrothermal model, which is validated against measured sensor temperatures and then used to estimate the local temperature of the LCE units. Using separate device implementations with different programmed director configurations, the same electrothermal system design is demonstrated for elongation, contraction, bending, and twisting. The resulting deformations are interpreted using a temperature-dependent anisotropic eigenstrain framework. Actuation strains up to ~ 25% are achieved at 8 V, while neighboring non-addressed columns show less than 4% strain at the maximum driving voltage, indicating localized activation with limited thermal crosstalk. These results establish the feasibility of electrothermally addressable LCE microactuation and provide a practical basis for future integrated soft microsystems.
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2. Optical crosstalk between SiPMs in dual-ended readout.
PMID:日期:2025-10-16Gamma-ray detection performance in scintillation crystals can be improved by coupling multiple photodetectors around the sensitive volume. Greater light collection leads to improved time and energy resolution. However, neighboring detector noise, both uncorrelated and correlated, can produce optical photons that may deteriorate their performance. We studied the impact of external optical crosstalk in a dual-ended readout setup using AFBR-S4N44P014M silicon photomultipliers (SiPMs) from Broadcom coupled to 20 mm thick bismuth germanate (BGO) crystal, with and without scintillation light. SiPMs were biased individually. The behavior of crosstalk was analytically modeled. The dark count rate increased up to 50 % when both SiPMs were biased with respect to only one active SiPM. At the same time, the crosstalk probability increased more than 2-fold at high overvoltages due to detection and re-emission of avalanche photons, limiting the operational range and causing an up to 5-fold increase in the total number of detected photons. Energy resolution in BGO was impacted, and the coincidence time resolution distribution shape between two BGO detectors was significantly altered- both in a non-intuitively manner. Experimental results validate the analytical model which rely on a single constant to predict dark count rate, crosstalk and light output enhancement. Crosstalk in multi-SiPM configurations, especially at high overvoltage, significantly impacts performance. Deep understanding of the effects of excess noise in SiPM is crucial for an optimal overall gamma detector operation. Findings extend to applications in high-energy physics, time-of-flight positron emission tomography using dual-ended or monolithic crystals, and cryogenic SiPM experiments in neutrino/dark matter studies.
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3. Recent Progress in Blood Flow Sensing.
PMID:日期:2025-06-01Blood plays a central role in the maintenance of the human body, and monitoring its flow rate, either invasively or non-invasively, in different parts of the circulatory is essential in the diagnosis and treatment of patients and for advancing biomedical research. This review examines the history and challenges of blood flow sensing and highlights the current state-of-the art blood flowmeters alongside the emerging tools poised to realize continuous and real-time monitoring. The clinical requirements for designing blood flow sensors are considered, including where the sensors are interfaced and their signal transduction mechanisms. Finally, the existing technological gaps are discussed and potential pathways to allow for further optimization are explored. Continued innovations in the several hundred years of evolution of blood flow sensing technology are poised to provide more timely interventions related to maintaining proper blood flow for improving patient care and outcomes.
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4. Antenna-Driven Optical Fiber-Based Acousto-Optic Modulation Devices: Electro-Mechanical Model and Experimental Validation.
PMID:日期:2025-06-01Acousto-optic modulation (AOM)-based sensors offer distinct advantages compared to their electrical counterparts. The electromagnetic immunity of optical fibers makes AOMs ideal for applications like radio frequency (RF) field measurement inside the bore of a magnetic resonance imaging (MRI) scanner without interfering with the RF environment. These RF field sensors utilize antennae coupled with a radially poled, coaxial piezoelectric transducer over an optical Fiber-Bragg Grating (FBG). The design and optimization of these sensors require a complete electromechanical model of the fiber-transducer composite structure. This study presents an electromechanical equivalent circuit model for antenna-coupled, fiber-based AOMs, toward the determination of the electromechanical frequency response of this type of AOM-based sensor. The transducer model is validated against experimental data on a Zinc Oxide (ZnO)-based acousto-optic phase modulator in 1-800 MHz range, as well as a piezocomposite-based FBG-AOM sensor in the 1-100 MHz range. The antenna-coupled model is validated experimentally utilizing an N-turn loop antenna-coupled sensor for H-field measurements up to 100 MHz. The results also show the utility of sensitive, broadband optical FBG measurements for characterizing piezoelectric materials with high losses, which prevents accurate electrical characterization. The developed and validated model can be beneficial for design optimization of AF-AOM based sensors for different applications.
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5. An electromagnetic indirect-driving scanning mirror for wide-field coaxial LiDAR applications.
PMID:日期:2024-12-01This paper reports an electromagnetic indirect-driving scanning mirror with an enlarged mirror plate ( × ) supported by high-strength polymer hinges for wide-field coaxial LiDAR (Light Detection and Ranging) applications. An indirect-driving mechanism was developed to achieve large tilting angle through mechanical amplification, while maintaining a relatively high resonance frequency of the enlarged mirror plate. A prototype mirror was designed, fabricated, and tested. A Hall scan position sensor was integrated to monitor the pose of the mirror in real time. The testing results show a coupled resonance frequency of 54.9 with an optical tilting angle of ± °, corresponding to a field of view (FoV) of 12 °. A wide-field coaxial LiDAR system was also built based on the indirect-driving scanning mirror, and 2D imaging was demonstrated.
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6. Advancements and Applications of Micro and Nanostructured Capacitive Sensors: A Review.
PMID:日期:2024-10-16Capacitors are essential components in modern electrical systems, functioning primarily to store electrical charges and regulate current flow. Capacitive sensors, developed in the 20th century, have become crucial in various applications, including touchscreens and smart devices, due to their ability to detect both metallic and non-metallic objects with high sensitivity and low energy consumption. The advancement of microelectromechanical systems (MEMS) and nanotechnology has significantly enhanced the capabilities of capacitive sensors, leading to unprecedented sensitivity, dynamic range, and cost-effectiveness. These sensors are integral to modern devices, enabling precise measurements of proximity, pressure, strain, and other parameters. This review provides a comprehensive overview of the development, fabrication, and integration of micro and nanostructured capacitive sensors. In terms of an electric field, the working and detection principles are discussed with analytical equations and our numerical results. The focus extends to novel fabrication methods using advanced materials to enhance sensitivities for various parameters, such as proximity, force, pressure, strain, temperature, humidity, and liquid sensing. Their applications are demonstrated in wearable devices, human-machine interfaces, biomedical sensing, health monitoring, robotics control, industrial monitoring, and molecular detection. By consolidating existing research, this review offers insights into the advancements and future directions of capacitive sensor technology.
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7. A water-immersible scanning mirror with hybrid polymer and elastomer hinges for high-speed and wide-field 3D ultrasound imaging.
7. 一种具有混合聚合物和弹性体铰链的水浸式扫描镜，用于高速和宽场3D超声成像PMID:日期:2024-03-01This paper reports a new water-immersible single-axis scanning mirror using hybrid polymer and elastomer hinges to achieve both high scanning resonance frequencies and large tilting angles for high-speed and wide-field 3D ultrasound imaging. To demonstrate the concept, a prototype scanning mirror is designed, fabricated, and characterized. The fast- and slow-scanning were achieved by integrating stiff BoPET (biaxially oriented polyethylene terephthalate) and soft elastomer PDMS (Polydimethylsiloxane) hinges, respectively. The testing results have shown a resonance frequency of 270 for the BoPET hinges and a resonance frequency of 10 for the PDMS hinges when the scanning mirror was immersed in water. 3D ultrasound imaging is demonstrated by combining the fast- and slow-scanning together to provide both an augmented field of view (FoV) and high local imaging volume rate.
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8. {"_":"Batteryless wireless magnetostrictive FeCo/Ni clad plate for human coronavirus 229E detection.","sub":["30","70"]}
PMID:日期:2023-01-01Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been garnered increasing for its rapid worldwide spread. Each country had implemented city-wide lockdowns and immigration regulations to prevent the spread of the infection, resulting in severe economic consequences. Materials and technologies that monitor environmental conditions and wirelessly communicate such information to people are thus gaining considerable attention as a countermeasure. This study investigated the dynamic characteristics of batteryless magnetostrictive alloys for energy harvesting to detect human coronavirus 229E (HCoV-229E). Light and thin magnetostrictive Fe-Co/Ni clad plate with rectification, direct current (DC) voltage storage capacitor, and wireless information transmission circuits were developed for this purpose. The power consumption was reduced by improving the energy storage circuit, and the magnetostrictive clad plate under bending vibration stored a DC voltage of 1.9 V and wirelessly transmitted a signal to a personal computer once every 5 min and 10 s under bias magnetic fields of 0 and 10 mT, respectively. Then, on the clad plate surface, a novel CD13 biorecognition layer was immobilized using a self-assembled monolayer of -COOH groups, thus forming an amide bond with -NH groups for the detection of HCoV-229E. A bending vibration test demonstrated the resonance frequency changes because of HCoV-229E binding. The fluorescence signal demonstrated that HCoV-229E could be successfully detected. Thus, because HCoV-229E changed the dynamic characteristics of this plate, the CD13-modified magnetostrictive clad plate could detect HCoV-229E from the interval of wireless communication time. Therefore, a monitoring system that transmits/detects the presence of human coronavirus without batteries will be realized soon.
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9. Single-arm diagnostic electrocardiography with printed graphene on wearable textiles.
PMID:日期:2023-01-01Stimulated by the COVID-19 outbreak, the global healthcare industry better acknowledges the necessity of innovating novel methods for remote healthcare monitoring and treating patients outside clinics. Here we report the development of two different types of graphene textile electrodes differentiated by the employed fabrication techniques (i.e., dip-coating and spray printing) and successful demonstration of ergonomic and truly wearable, single-arm diagnostic electrocardiography (SADE) using only 3 electrodes positioned on only 1 arm. The performance of the printed graphene e-textile wearable systems were benchmarked against the "gold standard" silver/silver chloride (Ag/AgCl) "wet" electrodes; achieving excellent correlation up to ∼ 96% and ∼ 98% in ECG recordings (15 s duration) acquired with graphene textiles fabricated by dip-coating and spray printing techniques, respectively. In addition, we successfully implemented automatic detection of heartrate of 8 volunteers (mean value: 74.4 bpm) during 5 min of static and dynamic daily activities and benchmarked their recordings with a standard fingertip photoplethysmography (PPG) device. Heart rate variability (HRV) was calculated, and the root means successive square difference (rMMSD) metric was 30 ms during 5 min of recording. Other cardiac parameters such as R-R interval, QRS complex duration, S-T segment duration, and T-wave duration were also detected and compared to typical chest ECG values.
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10. Physics-based Models for photonic thermometers.
PMID:日期:2022-12-01Resistance thermometry, meticulously developed over the last century, provides a time-tested method for taking temperature measurements. However, fundamental limits to resistance-based approaches along with a desire to reduce the cost of sensor ownership, increase sensor stability and meet the growing needs of emerging economy has produced considerable interest in developing photonic temperature sensors. In this study we utilize Della-Corte-Varshni treatment for thermo-optic coefficient to derive models for temperature-wavelength relationships in silicon ring resonators and Fiber Bragg gratings. Model evaluation is carried out using a Bayesian criteria that selects models for superior out-of-sample predictive accuracy whilst minimizing model complexity. Our work presents physics-based framework for photonic thermometry reference functions, putting constraints on model complexity and parameter bounds, pointing the way towards a reference function that can be utilized for future standardization and inter-comparison of photonic thermometers.