Sensors and Actuators A-physical最新文献_第8页

A highly sensitive multi-DOF soft bionic finger using clams-inspired rigid-soft hybrid joints 一个高灵敏度的多自由度软仿生手指，使用蛤启发的刚软混合关节

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-24 DOI: 10.1016/j.sna.2026.117525

Zhipeng Wei , Houping Wu , Chenchen Li , Yulian Peng , Yingao Xu , Yufeng Wang , Seonggun Joe , Hongbo Wang

{"title":"A highly sensitive multi-DOF soft bionic finger using clams-inspired rigid-soft hybrid joints","authors":"Zhipeng Wei , Houping Wu , Chenchen Li , Yulian Peng , Yingao Xu , Yufeng Wang , Seonggun Joe , Hongbo Wang","doi":"10.1016/j.sna.2026.117525","DOIUrl":"10.1016/j.sna.2026.117525","url":null,"abstract":"<div><div>The human hand is endowed with unparalleled capacities for object manipulation and tactile perception of the external environment. In this work, we propose a Perceptive Bionic Finger (PBF), which consists of three vacuum-driven clam-inspired rigid-soft hybrid joints, connected with rigid phalanges. The PBF is capable of a maximum bending angle of 135°, with two actively controlled degrees of freedom (DOFs) and one passive DOF. The biomimetic design of the hybrid joints overcomes the drawbacks of low stiffness associated with silicone-rubber-based soft fingers. Magnetic induction-based split angle sensing films are seamlessly integrated into the two rigid plates of each hybrid joint, enabling the detection of bending angle changes as small as 0.1°. The high-resolution proprioceptive hybrid joint enables the PBF to be aware of its precise shape (bending angle) in real-time, regardless of whether the bending is caused by active drive or by passive deformation. By detecting subtle passive deformation, the PBF can recognize the surface textures and topography of a seashell as it slides across its surface, similar to how human fingers do. In addition, two PBFs are assembled on a frame to form a bionic gripper. As humans employ their thumb and index finger to perform a pinching action on an object, the two-PBF gripper is capable of discerning the object's dimensions during the grasping process, facilitated by real-time joint angle sensing. Moreover, we have demonstrated that the two-PBF gripper is capable of grasping various objects from a big plastic bottle, a cup, to a small pen and a peanut.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117525"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079994","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

Investigation on parallel-sensing properties of metal rubber under compression loading based on electrical resistance change 基于电阻变化的压缩载荷下金属橡胶并联传感性能研究

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-22 DOI: 10.1016/j.sna.2026.117496

Chen Chen , Zesen Yuan , Yang Liu , Suchao Li , Wensong Zhou

{"title":"Investigation on parallel-sensing properties of metal rubber under compression loading based on electrical resistance change","authors":"Chen Chen , Zesen Yuan , Yang Liu , Suchao Li , Wensong Zhou","doi":"10.1016/j.sna.2026.117496","DOIUrl":"10.1016/j.sna.2026.117496","url":null,"abstract":"<div><div>Metal rubber (MR) is widely employed in structural vibration control and impact mitigation. A macroscopic electromechanical model of MR is derived in this study to investigate its parallel-sensing capability along with the original mechanical properties. The mechanical and electrical behavior of MR are first investigated using uniaxial compression and cyclic loading tests. The observed correlations between electrical resistance and mechanical responses are then applied to develop a macroscale electromechanical model of MR and propose methods for the identification of MR resistance, force, and displacement. Finally, the feasibility of using the electromechanical model to realize the parallel-sensing of MR is verified and evaluated. The results indicate that the electrical resistance of MR decreases with increasing wire diameter and nominal density, but increases with specimen thickness. Moreover, specimens with higher nominal density exhibit a more extensive overlap in their electrical resistance–displacement curves during cyclic loading. The proposed electromechanical model exhibits high accuracy in electrical resistance identification and shows greater sensitivity and accuracy for force identification at small displacements than large displacements, with displacement identification accuracy decreasing slightly after loading/unloading inflection points. The proposed method for realizing the parallel-sensing of MR holistically demonstrated high resolution and accuracy under low-frequency vibrations, though sensitivity diminishes for high‑frequency, small‑amplitude vibrations.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117496"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079993","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

Multi-field tuning of photocurrents in single phase multiferroic BLFCT thin films 单相多铁BLFCT薄膜中光电流的多场调谐

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-15 DOI: 10.1016/j.sna.2026.117507

Ji Luo, Peng Zhou, Yuxiong Cao, Tianjin Zhang, Jinzhao Wang, Yajun Qi

{"title":"Multi-field tuning of photocurrents in single phase multiferroic BLFCT thin films","authors":"Ji Luo, Peng Zhou, Yuxiong Cao, Tianjin Zhang, Jinzhao Wang, Yajun Qi","doi":"10.1016/j.sna.2026.117507","DOIUrl":"10.1016/j.sna.2026.117507","url":null,"abstract":"<div><div>Multiferroic materials, exhibiting both ferroelectric and ferromagnetic order, have garnered significant interest for optoelectronic applications. Ferroelectricity provides spontaneous polarization and photoresponse capabilities, while ferromagnetism introduces magneto-optical coupling effects, giving these materials distinct advantages in multifunctional device design. This study investigates the manipulation of photocurrent via multiple fields (electric and magnetic) in single phase multiferroic Bi<sub>4</sub>LaFe<sub>0.7</sub>Co<sub>0.3</sub>Ti<sub>3</sub>O<sub>15</sub> (BLFCT) thin films towards self-powered ultraviolet photodetector. High-quality multiferroic BLFCT thin films were fabricated on Nb:SrTiO<sub>3</sub> (NSTO) substrates using pulsed laser deposition, forming Pt/BLFCT/NSTO heterojunctions. Under 365 nm ultraviolet illumination, the device exhibited significant self-powered characteristics, achieving a zero-bias photocurrent density of 39.354 μA/cm² and an on/off ratio exceeding 450. Moreover, the photocurrent could be further enhanced by up to 20 % through the application of a magnetic field, demonstrating the multi-field tunability of the device. Further investigations revealed that the switchable ferroelectric polarization modulates the strength of the effective internal electric field, which dominates the separation and transportation of the photocarriers. Moreover, the magnetostrictive effect and the magnetoelectric coupling-induced ferroelectric polarization promote the separation and transport of photogenerated carriers, thereby enhancing the overall photoresponse performance. This work establishes a promising strategy for employing multiferroic materials in low-power-consumption UV detection applications.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117507"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145981895","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

Smart nanoprobes in diabetes management: Emerging role of carbon quantum dots in diagnosis and therapy 智能纳米探针在糖尿病管理：碳量子点在诊断和治疗中的新兴作用

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-12 DOI: 10.1016/j.sna.2026.117490

Basila A.K. , Desu Gayathri Niharika , CS Krishna Murthy , K.Sandeep Raju , Punam Salaria , Amarendar Reddy M.

引用次数: 0

Design, fabrication and testing of MEMS based piezoresistive force sensor for human-machine interaction system in biomedical applications 生物医学人机交互系统中基于MEMS压阻式力传感器的设计、制造和测试

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-02-05 DOI: 10.1016/j.sna.2026.117566

R.S Divya , Ankur Verma , C.K Subash , K.J Suja , Lintu Rajan

{"title":"Design, fabrication and testing of MEMS based piezoresistive force sensor for human-machine interaction system in biomedical applications","authors":"R.S Divya , Ankur Verma , C.K Subash , K.J Suja , Lintu Rajan","doi":"10.1016/j.sna.2026.117566","DOIUrl":"10.1016/j.sna.2026.117566","url":null,"abstract":"<div><div>The emergence of Human-Machine Interaction (HMI) technologies has been significantly impacted the biomedical field, as these have enabled intelligent, adaptable, and interactive communication between humans and medical instruments. This work presents the design, manufacturing and testing of a MEMS-based piezoresistive force sensor, designed for biomedical systems applications. The proposed sensor features a compact spiral structure with 1.5 mm × 1.5 mm in total dimensions and includes a 1 mm × 1 mm diaphragm that incorporates an Archimedean spiral piezoresistive structure in a Wheatstone bridge format to improve sensitivity and linearity. Static characterization resulted in a full-scale output of 180.10 mV with a sensitivity of 62.11 mV/N when a load was applied and 61.06 mV/N during unloading. Sensor exhibits a maximum hysteresis of 1.71 % FSS, nonlinearity of –2.04 % FSS and repeatability of 0.53 % FSS. Dynamic tests performed for normal forces ranging from 0.15 N to 0.5 N over ten loading cycles showed minimal deviation (<1 %), indicating high stability and repeatability. The sensor has a fast transient response, as 90 % of the peak output was achieved in milliseconds, and it exhibits very high sensitivity, compactness, and reliability. The results confirm that the developed sensor is a viable candidate for real-time force measurements in biomedical and robotic HMI systems. Future work will explore polymer-based spiral structures to further enhance sensor performance for flexible and wearable electronics.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117566"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170842","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

High aspect ratio through-wafer etching of AT-cut quartz using double-sided offset apertures 高纵横比通过晶圆蚀刻at切割石英使用双面偏移孔径

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-30 DOI: 10.1016/j.sna.2026.117541

Kaiwen Chen , Chunyan Yin , Fangmeng Xu, Guangbin Dou

引用次数: 0

Design and practical evaluation of a dual-band dispersion-engineered metamaterial sensor for sensing applications 用于传感应用的双波段色散工程超材料传感器的设计与实用评估

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-22 DOI: 10.1016/j.sna.2026.117515

Md. Zikrul Bari Chowdhury , Mohammad Tariqul Islam , Mohamad A. Alawad , Mohamed Ouda , Abdulmajeed M. Alenezi

{"title":"Design and practical evaluation of a dual-band dispersion-engineered metamaterial sensor for sensing applications","authors":"Md. Zikrul Bari Chowdhury , Mohammad Tariqul Islam , Mohamad A. Alawad , Mohamed Ouda , Abdulmajeed M. Alenezi","doi":"10.1016/j.sna.2026.117515","DOIUrl":"10.1016/j.sna.2026.117515","url":null,"abstract":"<div><div>Juice adulteration, such as the addition of saccharine for profit, is a growing concern in food safety. Traditional methods for detecting such adulteration are often time-consuming, costly, and require specialized equipment. To address these limitations, this paper introduces the design, development, and experimental validation of a dispersion-engineered metamaterial-based sensor specifically focusing on the detection of juice adulteration. The proposed sensor offers a simple and efficient alternative to traditional methods, with a compact design measuring 13 × 13 mm², the sensor operates across dual frequency bands, resonating at 3 GHz and 4.95 GHz, exhibiting excellent transmission coefficients (S<sub>21</sub>). The lower S-band resonance provides an optional communication mode, while the higher C-band resonance is dedicated to liquid-adulteration sensing in juice. The sensor demonstrates a high Q-factor of 95.40, with notable sensitivity. To ensure its accuracy, the sensor's performance was validated both numerically and experimentally. The S-parameters were verified using Advanced Design System (ADS) simulations, showing excellent agreement between the theoretical and practical results. Finally, this work is suitable for wireless communication and provides an efficient method for detecting adulterated juice without the need for complex laboratory procedures.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117515"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079899","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

Flexible nanocarbon hybrid laser-induced graphene electrodes for electrochemical Point-of-Care enzymatic urea detection 用于电化学即时酶解尿素检测的柔性纳米碳混合激光诱导石墨烯电极

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-27 DOI: 10.1016/j.sna.2026.117532

Sanjeet Kumar , Khairunnisa Amreen , Satish Kumar Dubey , Sanket Goel

{"title":"Flexible nanocarbon hybrid laser-induced graphene electrodes for electrochemical Point-of-Care enzymatic urea detection","authors":"Sanjeet Kumar , Khairunnisa Amreen , Satish Kumar Dubey , Sanket Goel","doi":"10.1016/j.sna.2026.117532","DOIUrl":"10.1016/j.sna.2026.117532","url":null,"abstract":"<div><div>The development of rapid, sensitive, and selective biosensors for urea detection is critical for advancing clinical diagnostics and renal health monitoring. In this study, a novel enzymatic urea sensor was developed using laser-induced graphene (LIG) electrodes, strategically functionalized with multi-walled carbon nanotubes (MWCNTs) to significantly enhance electrochemical performance. Comprehensive morphological and surface chemical characterizations using SEM, EDX, and XPS confirmed successful MWCNT integration, yielding a highly conductive, porous interface optimized for enzyme immobilization. Electrochemical analyses revealed pronounced improvements in electron transfer kinetics and catalytic efficiency upon urease immobilization, enabling robust detection of urea across a physiologically relevant concentration range (100 – 4000 µM) with a low detection limit and limit of quantification as 21.65 µM and 65.61 µM. Exceptional selectivity against common interferents was achieved, along with excellent repeatability, reproducibility, and operational stability, with over 90 % activity retained after prolonged storage. These results highlight the promise of MWCNT-enhanced LIG platforms as high-performance, mediator-assisted electrochemical bio-interfaces for urea detection, providing a foundation for future development of portable and point-of-care diagnostic system.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117532"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079903","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

Vibration characteristics of hemispherical shell resonators with coaxial error 含同轴误差的半球形壳体谐振腔振动特性

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-23 DOI: 10.1016/j.sna.2026.117506

Longkai Zheng , Shurui Wen , Fengming Li

{"title":"Vibration characteristics of hemispherical shell resonators with coaxial error","authors":"Longkai Zheng , Shurui Wen , Fengming Li","doi":"10.1016/j.sna.2026.117506","DOIUrl":"10.1016/j.sna.2026.117506","url":null,"abstract":"<div><div>Coaxial error of hemispherical shell resonators (HSRs) is commonly caused by machining, which can significantly influence the frequency splitting and the symmetry of mode shapes of the HSRs, ultimately affecting the performance of the resonators. This study aims to analyze the influences of coaxial error on the frequency splitting and mode shapes of the HSRs using both analytical and experimental techniques. The coaxial error is quantitatively characterized by establishing the relationship between the deviation distance <em>e</em><sub>1</sub> and the center angle <em>φ</em><sub><em>a</em></sub> of the HSR. The analytical model of the HSR with coaxial error is established by applying Hamilton’s principle, and the vibration characteristics are conveniently analyzed. Taking into account the mass impact of the acceleration sensors, the natural frequencies, frequency splitting values, and mode shapes are obtained and compared by using the established analytical model, the finite element method (FEM) and the experimental tests, from which the accuracy of the established analytical model is also verified. The effects of the deviation distance on the vibration properties of the HSR are discussed in detail. The key contributions of this paper are the establishment of the theoretical model and the design of the modal experiments for HSRs with coaxial error, which provide references for future researches in related fields.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117506"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079991","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

Radiation-enhanced air-coupled Langevin transducer based on an acoustic black hole structure 基于声黑洞结构的辐射增强空气耦合朗格万换能器

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.sna.2026.117500

Huiqin Chen , Yi Wang , Hao Jiang , Cheng Chen , Shuyu Lin

{"title":"Radiation-enhanced air-coupled Langevin transducer based on an acoustic black hole structure","authors":"Huiqin Chen , Yi Wang , Hao Jiang , Cheng Chen , Shuyu Lin","doi":"10.1016/j.sna.2026.117500","DOIUrl":"10.1016/j.sna.2026.117500","url":null,"abstract":"<div><div>Traditional Langevin transducers (TLTs) are severely limited in airborne radiation efficiency due to a significant acoustic impedance mismatch with air. Furthermore, complex near-sound field results in fluctuating pressure distributions that hinder effective energy utilization. To address these limitations, we propose an acoustic black hole-integrated air-coupled Langevin transducer (ABHLT) for enhanced radiation and uniform axial sound field in the near-field region. Finite element method (FEM) simulations and experimental measurements confirm that the ABHLT generates significantly higher axial sound pressure and effectively suppresses spatial pressure fluctuations along the propagation axis in the near-field region. Compared to the TLT, the ABHLT demonstrates a 63 % increase in electroacoustic efficiency and a 62 % increase in total radiation power. These improvements stem from longitudinal-flexural mode conversion which collectively enhances acoustic matching, amplifies flexural vibration displacement, and accumulates mechanical energy. This structurally simple solution enables more effective near-field airborne applications of Langevin transducers, such as ultrasonic processing and drying.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"400 ","pages":"Article 117500"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025118","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