Sensors and Actuators A-physical最新文献_第7页

Fiber optic integrated FPI sensor for simultaneous measurement of temperature and relative humidity 用于同时测量温度和相对湿度的光纤集成FPI传感器

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-07-04 DOI: 10.1016/j.sna.2025.116865

Fulin Chen, Simei Sun, Wenbo Jiang, Mingyue Huang, Zinan Tu, Qichang Jiang, Shuang Cao, Su Sheng, Chao Jiang

{"title":"Fiber optic integrated FPI sensor for simultaneous measurement of temperature and relative humidity","authors":"Fulin Chen, Simei Sun, Wenbo Jiang, Mingyue Huang, Zinan Tu, Qichang Jiang, Shuang Cao, Su Sheng, Chao Jiang","doi":"10.1016/j.sna.2025.116865","DOIUrl":"10.1016/j.sna.2025.116865","url":null,"abstract":"<div><div>This study presents a novel fiber optic sensor, including two integrated Fabry-Perot interferometers (FPIs): a polydimethylsiloxane cavity based FPI<sub>1</sub>, and a polyvinyl alcohol thin-film air cavity based FPI<sub>2</sub>. This dual-cavity configuration has been meticulously designed to sense both temperature and relative humidity (RH). The shifts of the wavelength of the interference fringes were meticulously examined through the methods of fast Fourier transform (FFT) and Fourier band-pass filtering (FBPF) methodology. The results demonstrate that the FPI<sub>1</sub> is absolutely sensitive to temperature, whereas the FPI<sub>2</sub> is sensitive to both humidity and temperature. The temperature sensitivity of FPI<sub>1</sub> cavity is 2.674 nm/℃ within the range of 30–46 °C, and the humidity sensitivity of FPI<sub>2</sub> is 0.080 nm/%RH in the range of 41–59 %RH. The simultaneous measurement of humidity and temperature can be realized through the demodulation of the sensitivity coefficient matrix. The small size, high sensitivity and easy fabrication of this sensor indicate wide, potential applications.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116865"},"PeriodicalIF":4.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A wearable ultrasound patch based on ultrathin backing for biomedical imaging 一种基于超薄衬底的可穿戴超声贴片，用于生物医学成像

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-07-03 DOI: 10.1016/j.sna.2025.116854

Fankai Kong, Peng Liu, Hu Tang, Jiwei Zhao, Rongfei Ruan, Siping Chen, Jue Peng

{"title":"A wearable ultrasound patch based on ultrathin backing for biomedical imaging","authors":"Fankai Kong, Peng Liu, Hu Tang, Jiwei Zhao, Rongfei Ruan, Siping Chen, Jue Peng","doi":"10.1016/j.sna.2025.116854","DOIUrl":"10.1016/j.sna.2025.116854","url":null,"abstract":"<div><div>Wearable ultrasound patches (WUSPs) present significant potential for long-term deep tissue monitoring. However, achieving an ultrathin structure while maintaining penetration depth, sensitivity, and axial resolution remains challenging. To overcome these challenges, a novel ultrathin high-attenuation backing layer is developed through the compression and heating, which is composed of chlorinated polyethylene (CPE) and tungsten powder. A 2.7 MHz wearable ultrasound phased array patch with a total thickness of 2 mm was fabricated based on the novel backing layer. The backing material exhibits an acoustic impedance of 6 MRayl and a maximum attenuation of 391 dB/cm at 5 MHz. The acoustic attenuation is about 1.6 times that of conventional epoxy/tungsten backings. The thickness of the backing layer used in the WUSP is only 0.7 mm (∼ 2λ), which significantly reduces total thickness of WUSP transducer. The −6 dB bandwidth and insertion loss of the WUSP are 72.15 % and −42.44 dB, respectively. ATS539 phantom B-mode imaging indicates a spatial resolution of 0.64 mm × 2.69 mm (axial × lateral) at a depth of 70 mm and an imaging depth of > 180 mm. These advances can promote the ultrathin and miniaturized design of WUSPs, further enabling their applications in wearable medical imaging monitoring and diagnostics.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116854"},"PeriodicalIF":4.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144534753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Verification of a metamaterial sensor strategy to measure the effect of the acoustic wave on the transmission properties of the optical fiber 一种测量声波对光纤传输特性影响的超材料传感器策略的验证

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-07-03 DOI: 10.1016/j.sna.2025.116861

Min Zhong

引用次数: 0

Printed split ring resonator based microwave sensor on biodegradable substrate for dielectric characterization 基于可降解基板的印刷分裂环谐振器微波传感器的介电特性研究

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-07-03 DOI: 10.1016/j.sna.2025.116856

S.M. Ishraqul Huq , Gaozhi Xiao , Sharmistha Bhadra

{"title":"Printed split ring resonator based microwave sensor on biodegradable substrate for dielectric characterization","authors":"S.M. Ishraqul Huq , Gaozhi Xiao , Sharmistha Bhadra","doi":"10.1016/j.sna.2025.116856","DOIUrl":"10.1016/j.sna.2025.116856","url":null,"abstract":"<div><div>This study presents a split ring resonator (SRR) based microwave sensor operating at 2.5 GHz, printed on a biodegradable cellulose acetate (CA) substrate for dielectric characterization of solid materials. The study systematically investigates the influence of feeder position and ring geometry on the obtainable modes of resonant frequency and the transmission amplitude. Additionally, the impact of the thickness of the material under test (MUT) on the resonant frequency of the sensor is also studied. This shows that below 1.5 mm thickness, sensor’s resonant frequency and amplitude of the insertion change almost linearly with the thickness of the MUT. However, these parameters do not change much with respect to the thickness of MUT for samples thicker than 4 mm. The sensor is validated by sensing different solid materials of various thicknesses placed over the split. The shift in resonant frequency and amplitude of insertion loss are recorded for each sample, and fitting equations are modeled for relative permittivity and loss tangent with mean absolute errors of only 1.18 % and 3.91 %, respectively. Compared to several related works in literature, the sensor demonstrates the highest mean sensitivity of 0.687 % for the relative permittivity measurement in the range of 2–3.2. By leveraging biodegradable substrate and printing technology, this work offers a sustainable alternative to conventional microwave resonator based sensors while ensuring high performance in dielectric property measurement. The developed sensor provides a promising solution for cost-effective, flexible sustainable microwave sensing applications.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116856"},"PeriodicalIF":4.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A fast fabrication method of polymer-derived ceramic thin-film strain gauge based on laser induced forward transfer technique 基于激光诱导正向转移技术的聚合物陶瓷薄膜应变片快速制备方法

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-07-03 DOI: 10.1016/j.sna.2025.116859

Xiaocheng Chen , Guang Feng , Zhengya Zhang , Wei Xue , Fengping Li , Yanfei Liao , Kunpeng Zhang

{"title":"A fast fabrication method of polymer-derived ceramic thin-film strain gauge based on laser induced forward transfer technique","authors":"Xiaocheng Chen , Guang Feng , Zhengya Zhang , Wei Xue , Fengping Li , Yanfei Liao , Kunpeng Zhang","doi":"10.1016/j.sna.2025.116859","DOIUrl":"10.1016/j.sna.2025.116859","url":null,"abstract":"<div><div>Polymer-derived ceramic (PDC) thin-film sensors have found extensive applications in aerospace, mechanical engineering, and energy industries, owing to their exceptional chemical stability, robust mechanical properties, excellent thermal stability, and cost-effectiveness. However, conventional patterning techniques for ceramic precursor solutions (e.g., photolithography, direct writing, and 3D printing) are faced with challenges such as expensive equipment, specialized operational requirements, intricate processes, and high costs. This study presents a novel fabrication method for PDC thin-film strain sensor patterns by leveraging laser-induced forward transfer (LIFT) technology, integrated with a laser pyrolysis process to enable rapid, low-cost, and in-situ ceramic sensor manufacturing. The research investigates the impact of key process parameters—including infrared picosecond laser power, frequency, and substrate spacing-on critical patterning metrics (e.g., line width and deposition uniformity). As a validation, ceramic strain sensors were fabricated on alumina substrates. Experimental results demonstrate that the developed PDC thin-film strain sensors are capable of detecting micro-strains with a response time of 0.4 s, a strain coefficient of 18.13. Cyclic tensile tests have validated their exceptional stability during repeated loading cycles. Furthermore, the sensor was successfully employed to monitor the meshing dynamics of PEEK gears, showcasing the capability for real-time dynamic strain detection under fluctuating rotational speeds. This methodology establishes a highly efficient, cost-effective, and versatile fabrication route for PDC thin-film strain sensors, positioning them to expedite integration into advanced sensing systems for harsh environments and foster innovative applications in precision engineering, aerospace diagnostics, and energy infrastructure.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116859"},"PeriodicalIF":4.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical crosstalk between SiPMs in dual-ended readout 双端读出中sipm之间的光串扰

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-07-02 DOI: 10.1016/j.sna.2025.116782

Nicolaus Kratochwil , Emilie Roncali , Joshua W. Cates , Gerard Ariño-Estrada

{"title":"Optical crosstalk between SiPMs in dual-ended readout","authors":"Nicolaus Kratochwil , Emilie Roncali , Joshua W. Cates , Gerard Ariño-Estrada","doi":"10.1016/j.sna.2025.116782","DOIUrl":"10.1016/j.sna.2025.116782","url":null,"abstract":"<div><div>Gamma-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.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116782"},"PeriodicalIF":4.1,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ITO-PET-based optically transparent circularly polarized fractal wideband antenna for 5G sub-6 GHz band 5G sub- 6ghz频段基于ito - pet的光透明圆极化分形宽带天线

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-07-01 DOI: 10.1016/j.sna.2025.116804

Doppalapudi Siva Jyothi, Jayendra Kumar

引用次数: 0

1-DOF band-based gripper using iris mechanism 采用虹膜机构的1自由度带式夹持器

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-06-30 DOI: 10.1016/j.sna.2025.116811

Minsu Lee, Jeongseok Choi, Wonhyoung Lee, Jeeho Won, TaeWon Seo

{"title":"1-DOF band-based gripper using iris mechanism","authors":"Minsu Lee, Jeongseok Choi, Wonhyoung Lee, Jeeho Won, TaeWon Seo","doi":"10.1016/j.sna.2025.116811","DOIUrl":"10.1016/j.sna.2025.116811","url":null,"abstract":"<div><div>Soft grippers, which are robotic end-effectors made from deformable materials such as silicone or elastomers, offer inherent compliance and flexibility. These characteristics are crucial for grasping delicate or irregularly shaped objects without causing damage, making them suitable for applications where conventional rigid grippers may fail. Although various soft grippers have been developed recently, several challenges remain, including control accuracy, low capacity, and gripping force. In this paper, we propose a novel band-based lightweight (260 g), high-payload (maximum: 30.6 kg) gripper inspired by the human iris. Like the human iris adjusts the size of the pupil, the gripper modulates its grasping area by rotating the outer ring concentrically while keeping the inner ring stationary. In particular, the proposed grippers ensure both the robustness of position inaccuracy and grasp stability without relying on the manipulator. During this sequence, the bands intersect and topologically intertwine to form a grasp area. By wrapping the bands around the object, the gripper can achieve a high gripping force (146.1 N) and a stable grip. Regardless of whether the object has a position error, the gripper’s self-centering property allows it to hold the object stably. Experiments were conducted to evaluate the grasping capability for various object shapes and weights and compared its performance with other grippers in Table 2. The gripper’s gripping performance was demonstrated with several experiments and by successfully gripping complex geometries like a chestnut burr and very small object like 0.1 mm wire. The proposed gripper can be utilized for tasks where a soft and stable grip is essential, such as harvesting delicate or geometrically complex crops.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116811"},"PeriodicalIF":4.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

pH-responsive polymer hydrogel nanocomposites for sensor applications: A review ph响应聚合物水凝胶纳米复合材料在传感器中的应用：综述

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-06-28 DOI: 10.1016/j.sna.2025.116853

Chandra Sekhar Espenti , Maheshwar Reddy Mettu , Surendra T.V. , Srinivas Boora , Madhusudana Rao Kummara , Krishna Rao K.S.V. , Laxminarayana Eppakayala , Mallikarjun Anna

{"title":"pH-responsive polymer hydrogel nanocomposites for sensor applications: A review","authors":"Chandra Sekhar Espenti , Maheshwar Reddy Mettu , Surendra T.V. , Srinivas Boora , Madhusudana Rao Kummara , Krishna Rao K.S.V. , Laxminarayana Eppakayala , Mallikarjun Anna","doi":"10.1016/j.sna.2025.116853","DOIUrl":"10.1016/j.sna.2025.116853","url":null,"abstract":"<div><div>pH-sensitive polymer hydrogel nanocomposites have been a promising class of material for sensor technologies due to their excellent sensitivity, tunability, and flexibility. Very useful for monitoring environmental and biological pH variations, pH-sensitive smart hydrogels contain ionizable functional groups whose structural and physicochemical properties alter in response to alterations in pH. The incorporation of nanomaterials like graphene, metal nanoparticles, carbon nanotubes, and silica enhances their mechanical properties, conductivity, and stability, thus widening their potential applications. Advances in fabrication methods such as in-situ polymerization, chemical crosslinking, and layer-by-layer assembly have assisted in the synthesis of highly effective and durable sensor materials. These sensor devices based on nanocomposite materials are broadly used in biomedical applications such as wound sensing, drug delivery systems, and wearable health diagnostic applications, and also in environmental applications to determine water quality and soil condition. Despite its advantages, there still exist challenges such as response time, biocompatibility, and mass production. Future research should aim at improving material compositions, increasing biodegradability, and introducing multifunctional features into future-generation smart sensing technologies. Highlighting its ability to revolutionize numerous disciplines, this article presents an extensive review of the structure, composition, manufacturing, and useful applications of pH-responsive polymer hydrogel nanocomposites in sensor technology.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116853"},"PeriodicalIF":4.1,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced vibration detection with rGO-doped PAN/PVDF molecularly blended nanofibers: Preparation and characterization of the nanofibrous flexible piezoelectric vibration sensing elements rgo掺杂PAN/PVDF分子共混纳米纤维增强振动检测：纳米纤维柔性压电振动传感元件的制备与表征

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-06-28 DOI: 10.1016/j.sna.2025.116850

Ayse Bostanci Yoruk , Yakup Aykut , Recep Eren , Yahya Oz

{"title":"Enhanced vibration detection with rGO-doped PAN/PVDF molecularly blended nanofibers: Preparation and characterization of the nanofibrous flexible piezoelectric vibration sensing elements","authors":"Ayse Bostanci Yoruk , Yakup Aykut , Recep Eren , Yahya Oz","doi":"10.1016/j.sna.2025.116850","DOIUrl":"10.1016/j.sna.2025.116850","url":null,"abstract":"<div><div>In this study, the reduction process of both GO and GO-doped nanofibers was carried out via the chemical reduction method by using L-ascorbic acid (LAA) and sodium borohydride (SB). GO and reduced graphene oxide (rGO) doped polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), and PAN/PVDF nanofiber surfaces were produced by the electrospinning method. Nanofiber-reinforced flexible piezoelectric vibration sensing elements with a polydimethylsiloxane (PDMS) matrix were produced from all sample combinations. Piezoelectric vibration sensing element analysis of each sample group was performed. It has been shown that reducing graphene oxide while inside nanofiber surfaces effectively increases the piezoelectric performance of the sensing element. It was observed that when PAN and PVDF were molecularly blended and used together in nanofibers, the output voltage increased significantly by supporting and strengthening each other’s piezoelectric properties with the synergistic piezoelectric effect catalyzed by GO addition and a subsequent reduction process. This effect was highest with 1.98 V for the PAN/PVDF blend, where incorporated GO was reduced by 50 mM SB (PAN/PVDF/GO)<sub>50SB</sub>. According to the Raman results, the lowest intensity ratio of the D and G band (I<sub>D</sub>/I<sub>G</sub>) among the sample group containing PAN/PVDF/GO was 0.992 for the (PAN/PVDF/GO)<sub>50SB</sub> sample. Correspondingly, the maximum reduction was also in this sample. XPS results showed that C/O ratios were 16.35 and 43.21, respectively, for PAN/PVDF/GO nanofibers that were reduced separately with LAA and SB. Thus, SB provided a better reduction in the removal of oxygen functional groups. The developed flexible piezoelectric vibration sensing element can be used for the detection of dynamic loads on frames of an aircraft or in developing wearable technologies for pilots.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"393 ","pages":"Article 116850"},"PeriodicalIF":4.1,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0