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

Dual-wave hybrid acoustofluidic centrifuge for rapid enrichment of micro- and nanoscale biological particles

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-28 DOI: 10.1016/j.sna.2025.116495

Shaoshuai Han , Tongfei Wu , Honghao Li , He Li , Xin Yang , Ning Li , Tangcheng Huang , Jun Ren , Zhenlin Wu

{"title":"Dual-wave hybrid acoustofluidic centrifuge for rapid enrichment of micro- and nanoscale biological particles","authors":"Shaoshuai Han , Tongfei Wu , Honghao Li , He Li , Xin Yang , Ning Li , Tangcheng Huang , Jun Ren , Zhenlin Wu","doi":"10.1016/j.sna.2025.116495","DOIUrl":"10.1016/j.sna.2025.116495","url":null,"abstract":"<div><div>Rapid enrichment of micro- and nanoscale biological particles in microliter volumes presents substantial potential for applications in biosensing, disease diagnosis, and therapeutic interventions. Herein, a dual-wave hybrid acoustofluidic centrifuge (DHAC) technique is presented, which generates both Rayleigh and Shear Horizontal waves by optimizing the angle between the electrode and the reference flat of the piezoelectric substrate. The dual waves generate a complex acoustic field within the droplet, enabling the effective concentration of nanoparticles and various biological particles. The DHAC efficiently concentrates micro- and nanoscale particles ranging from 50 nm to 1 <span><math><mi>μ</mi></math></span> L sample in 120s, operating at 34.8MHz with a chip power of 31dBm, achieving an enrichment rate approximately 3.6 times higher than that of a single-wave acoustofluidic centrifuge. Furthermore, the cell viability of 293-F cells after 1 h of acoustic excitation in the DHAC device exceeded 90%, further confirming its high biocompatibility. This technology offers significant potential as an advanced tool for precise biochemical analysis and effective disease diagnostics.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"389 ","pages":"Article 116495"},"PeriodicalIF":4.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143769351","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, non-invasive auxiliary screening algorithm for lung cancer based on electronic nose system

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-28 DOI: 10.1016/j.sna.2025.116490

Yongxiang Lin , Junhu Jing , Yejun He , Xilei Wang , Aihua Zhong , Wenbin Ye , Wei Xu , Xiaojin Zhao , Xiaofang Pan

{"title":"A fast, non-invasive auxiliary screening algorithm for lung cancer based on electronic nose system","authors":"Yongxiang Lin , Junhu Jing , Yejun He , Xilei Wang , Aihua Zhong , Wenbin Ye , Wei Xu , Xiaojin Zhao , Xiaofang Pan","doi":"10.1016/j.sna.2025.116490","DOIUrl":"10.1016/j.sna.2025.116490","url":null,"abstract":"<div><div>Lung cancer is the second most common cancer worldwide, with conventional screening methods, including imaging and pathological diagnostics, facing challenges such as high misdiagnosis rates, radiation exposure, and invasiveness. In contrast, human breath analysis based on electronic nose technology offers a promising non-invasive, rapid, and cost-effective approach for large-scale lung cancer screening. To improve the accuracy of breath-based screening in the pattern recognition module of Electronic Nose technology, a Transformer-based architecture, termed Gasformer, has been specifically developed. This model is designed to detect low-concentration volatile organic compounds (VOCs) in complex human breath and is optimized to perform effectively even on small-sample datasets. Channel and self-attention mechanisms are incorporated into a restructured encoder to enhance the allocation of sensor signals and temporal positions. The feature representations of the encoder are decoded using additive attention, enabling accurate mapping to label space for exhalation recognition. Evaluation through three-fold cross-validation on a dataset of actual breath samples demonstrates the superior performance of Gasformer, achieving average classification accuracy, sensitivity, and specificity of 0.974 ± 0.036, 1.000 ± 0.000, and 0.944 ± 0.079, respectively. These results surpass those of traditional machine learning algorithms such as K-nearest Neighbors (KNN), Support Vector Machines (SVM), and Decision Trees (DT), as well as advanced deep learning models, including Convolutional Neural Networks (CNN) and Recurrent Neural Networks (RNN), with or without attention mechanisms. The findings highlight the potential of Gasformer as a reliable and effective tool for preliminary screening of lung cancer and other diseases through breath analysis.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"389 ","pages":"Article 116490"},"PeriodicalIF":4.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776306","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

Boron-doped diamond as a functional semiconductive layer in chemiresistive sensors for the enhanced gas sensing of NO2 at room temperature

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-28 DOI: 10.1016/j.sna.2025.116525

Marina Davydova , Petr Ashcheulov , Alexandra Palla Papavlu , Alexandr Laposa , Andrew Taylor , Jiří Kroutil , Thomas Lippert

{"title":"Boron-doped diamond as a functional semiconductive layer in chemiresistive sensors for the enhanced gas sensing of NO2 at room temperature","authors":"Marina Davydova , Petr Ashcheulov , Alexandra Palla Papavlu , Alexandr Laposa , Andrew Taylor , Jiří Kroutil , Thomas Lippert","doi":"10.1016/j.sna.2025.116525","DOIUrl":"10.1016/j.sna.2025.116525","url":null,"abstract":"<div><div>Nowadays chemiresistive gas sensors are viewed as fast, accurate, cheap, and effective instruments to monitor various hazardous air pollutants. However, most sensing materials currently used in such gas sensors require an activation step, in terms of additional thermal energy supplied to the sensing material, to achieve the necessary interaction between the sensing surface and the target gas molecule. In this work, the application of nanocrystalline boron-doped diamond (BDD) as the active layer/component in a chemiresistive gas sensor was investigated, focusing on the room-temperature operation of the gas sensor in the presence of oxidizing (NO<sub>2</sub>, CO) and reducing (NH<sub>3</sub>) gases. In contrast to previous reports using nanocrystalline diamond (NCD) as a gas sensing layer, the utilization of BDD layer eliminates the need for a precise control of the diamond layer surface hydrogen-termination, since BDD layer inherently exhibits p-type bulk semiconductive characteristics due to the presence of boron atoms. To enhance the sensitivity of the gas sensors based on BDD during room-temperature operation, a sensor comprised of BDD and Pd-SnO<sub>2</sub> layer in the form of a BDD/Pd-SnO<sub>2</sub> heterostructure was fabricated and investigated. The hybrid BDD/Pd-SnO<sub>2</sub> sensor exhibited an improved response in the presence of oxidizing NO<sub>2</sub> gas when compared to BDD-based sensors, and its sensitivity and recovery characteristics were further enhanced upon photo-assisted (illumination with UV) gas sensing, demonstrating the potential of BDD-based hybrid/heterojunction structures as a platform for the construction of gas sensors operating at room-temperature.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"389 ","pages":"Article 116525"},"PeriodicalIF":4.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783522","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

Microwave dual heater for independent heating of liquid samples

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-27 DOI: 10.1016/j.sna.2025.116497

Maede Chavoshi , Matko Martinic , Yan Zheng , Guy A.E. Vandenbosch , Bart Nauwelaers , Dominique Schreurs , Tomislav Markovic

{"title":"Microwave dual heater for independent heating of liquid samples","authors":"Maede Chavoshi , Matko Martinic , Yan Zheng , Guy A.E. Vandenbosch , Bart Nauwelaers , Dominique Schreurs , Tomislav Markovic","doi":"10.1016/j.sna.2025.116497","DOIUrl":"10.1016/j.sna.2025.116497","url":null,"abstract":"<div><div>This work presents a novel microwave heater pair designed for the independent and simultaneous heating of two liquid samples in microfluidic channels. The device is based on two resonators operating at distinct frequencies, enabling scalable heating within a single-feedline configuration. Experimental results demonstrate the system’s ability to achieve target temperatures between 30 °C and 60 °C with minimal temperature overshoot of below 4 %. The heater’s performance is evaluated in two modes; in individual mode, the device selectively heats one sample while maintaining a lower temperature in the other, whereas, in simultaneous mode, the two resonators work in tandem to heat both samples. In individual heating mode, heating rates of 25.5 °C/s and 17.5 °C/s were achieved for the first and the second heater, respectively. Similarly, the simultaneous mode obtained heating rates of 10.6 °C/s and 7.6 °C/s. This work establishes an efficient platform for selective microwave heating, with potential chemical and biomedical applications.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"389 ","pages":"Article 116497"},"PeriodicalIF":4.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785772","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

Vanadium doping as a key factor for superior NH3 sensing at room temperature in MoSe2/TiO2 composites

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-27 DOI: 10.1016/j.sna.2025.116501

Virendra Singh Choudhary , Sunil Gangwar , C.S. Yadav , Sandeep Sharma , Marcio A.P. Almeida , Surender Kumar Sharma

{"title":"Vanadium doping as a key factor for superior NH3 sensing at room temperature in MoSe2/TiO2 composites","authors":"Virendra Singh Choudhary , Sunil Gangwar , C.S. Yadav , Sandeep Sharma , Marcio A.P. Almeida , Surender Kumar Sharma","doi":"10.1016/j.sna.2025.116501","DOIUrl":"10.1016/j.sna.2025.116501","url":null,"abstract":"<div><div>The detection of ammonia is critical in various industrial and environmental applications due to its toxicity and contribution to air pollution. Effective ammonia sensors are essential for monitoring emissions in agricultural, chemical, and manufacturing processes, as well as for ensuring workplace safety and regulatory compliance. The present work investigates the gas sensing performance of vanadium-doped titanium dioxide/molybdenum diselenide (VTOMS) composite against ammonia in comparison to different volatile organic compounds. Interestingly, VTOMS demonstrated significantly higher sensitivity and selectivity towards ammonia in comparison to other volatile organic compounds. A comprehensive analysis of key sensing parameters revealed that the composite material exhibits superior performance over the molybdenum diselenide and titanium dioxide, showing a remarkable response time of 94 seconds and a recovery time of 50 seconds. The sensitivity of the sensor is ∼ 3.05 per part per million with a noise standard deviation of ∼ 0.305. The limit of detection for the sensor is found to be approximately 0.3 parts per million(ppm), indicating that the sensor is capable of detecting very low concentrations of ammonia. The study demonstrates significant potential of the molybdenum diselenide/vanadium-doped titanium dioxide (VTOMS) composite as a high-performance ammonia sensor, offering improved sensitivity, selectivity, and rapid response characteristics, which make it an ideal candidate for practical applications where accurate ammonia detection is critical.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116501"},"PeriodicalIF":4.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725972","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

Quantitative detection of steel bar corrosion in concrete by using capacitive sensor

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-27 DOI: 10.1016/j.sna.2025.116518

Xumei Lin , Peng Wang , Xiaofeng Han , Penggang Wang , Shiyuan Wang , Chenglong Yin

{"title":"Quantitative detection of steel bar corrosion in concrete by using capacitive sensor","authors":"Xumei Lin , Peng Wang , Xiaofeng Han , Penggang Wang , Shiyuan Wang , Chenglong Yin","doi":"10.1016/j.sna.2025.116518","DOIUrl":"10.1016/j.sna.2025.116518","url":null,"abstract":"<div><div>The detection of steel bar corrosion in reinforced concrete is of great significance to ensure the safe operation of buildings and improve structural durability. To further improve the accuracy of steel bar corrosion detection and achieve quantitative detection of the degree of corrosion, this study proposes a new method for detecting steel bar corrosion by using capacitive sensor. A parallel plate capacitor system formed by the measuring electrode and the steel bar inside concrete is designed. The study established a mathematical model of the parallel plate capacitor system under uniform corrosion conditions. The relationship between capacitance and corrosion depth is described quantitatively. The simulation results based on the mathematical model are consistent with those of the finite element analysis. This numerical simulation approach solves the limitation of finite element software in accurately quantifying the depth of steel bar corrosion. Through accelerated corrosion tests, a formula for the capacitance value and steel bar corrosion depth is established for non-uniform corrosion. Accelerated corrosion tests indicate that this method is more sensitive than traditional capacitance detection methods, and it is expected to realize the quantitative detection of steel bar corrosion in engineering.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116518"},"PeriodicalIF":4.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746437","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

IDC pressure sensors enabled smart footwear system for in vitro detection and monitoring of diabetic foot ulcer

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-27 DOI: 10.1016/j.sna.2025.116489

Malik Adnan , Junaid Saddiqi , Muhammad Hamza Zulfiqar , Muhammad Atif Khan , Khaled Al-Jaloud , Ali H. Alqahtani , Rifaqat Hussain , Muhammad Qasim Mehmood

{"title":"IDC pressure sensors enabled smart footwear system for in vitro detection and monitoring of diabetic foot ulcer","authors":"Malik Adnan , Junaid Saddiqi , Muhammad Hamza Zulfiqar , Muhammad Atif Khan , Khaled Al-Jaloud , Ali H. Alqahtani , Rifaqat Hussain , Muhammad Qasim Mehmood","doi":"10.1016/j.sna.2025.116489","DOIUrl":"10.1016/j.sna.2025.116489","url":null,"abstract":"<div><div>The early detection and monitoring of foot ulcers in diabetic patients is crucial to prevent severe complications, including infection and amputation. This work offers a novel approach to diabetic foot care with a smart footwear system incorporating a flexible insole embedded with pressure-sensitive Inter-Digitated Capacitive (IDC) sensors. IDC sensors show high linearity behavior to applied pressure, negligible hysteresis loss, and low response time (T<sub>response</sub>) and recovery time (T<sub>recovery</sub>) of 116 µs and 126 µs, respectively. Additionally, it offers the capability to analyze gait patterns, enabling a deeper understanding of how foot mechanics impact overall health in diabetic patients. A web application-based user-friendly interface was designed to continuously monitor and evaluate foot pressure distribution and provide real-time feedback through different color maps, donut plots, bar graphs, and semi-circular plots. An experiment was conducted with healthy male and female subjects with various weights and foot sizes while wearing the designed footwear to assess the pressure dynamics. Footwear embedded with IDC sensors-based insole detects irregular and unbalanced distribution of pressure that can give rise to foot ulcers and other consequences. According to these results, the IDC sensor-based insole is a competent diagnostic tool for proactive management and lowering the risk of severe consequences for diabetic patients by providing real-time monitoring and early diagnosis of diabetic foot ulcers. This innovative device has the potential to significantly improve diabetic foot care by giving medical professionals precise, accurate, useful information about foot health and the distribution of pressure. It is also used for athletes and normal people for gait analysis and corrections.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116489"},"PeriodicalIF":4.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746443","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

Performance analysis of a DC magnetron sputtered Cu2O/TiO2 heterojunction photodetector for short-wavelength detection

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-27 DOI: 10.1016/j.sna.2025.116517

Jagadish K A, Dhananjaya Kekuda

{"title":"Performance analysis of a DC magnetron sputtered Cu2O/TiO2 heterojunction photodetector for short-wavelength detection","authors":"Jagadish K A, Dhananjaya Kekuda","doi":"10.1016/j.sna.2025.116517","DOIUrl":"10.1016/j.sna.2025.116517","url":null,"abstract":"<div><div>This study details the fabrication of Cu<sub>2</sub>O/TiO<sub>2</sub> heterostructure thin films via DC magnetron sputtering. The post-annealing temperatures were tuned from room temperature to 250 °C to enhance their UV photodetection capabilities. X-ray diffraction (XRD) analysis confirmed the coexistence of Cu<sub>2</sub>O, CuO, and anatase TiO<sub>2</sub> phases, with improved crystallinity and grain growth occurring at higher annealing temperatures. Field Emission Scanning Electron Microscopy (FESEM) and Atomic Force Microscopy (AFM) analysis showed compact films with progressively increasing surface roughness as the annealing temperature was raised. Optical studies indicated enhanced light absorption due to a reduction in defects and improved crystalline quality. Electrical characterization demonstrated rectifying diode behavior, with annealed devices exhibiting reduced series resistance and enhanced photocurrent under UV illumination. The device annealed at 100 °C demonstrated optimal performance, reaching a responsivity of 0.27 A/W, a detectivity of 4.76 × 10<sup>10</sup> Jones, a linear dynamic range (LDR) of 21.03 dB, and a rise/fall time of 611/620 ms under 395 nm UV illumination. The rapid photoresponse and increased photocurrent at higher bias voltages underscore efficient charge transport at the Cu<sub>2</sub>O/TiO<sub>2</sub> interface. These findings establish Cu<sub>2</sub>O/TiO<sub>2</sub> heterostructures as highly promising materials for advanced UV photodetectors.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116517"},"PeriodicalIF":4.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy-efficient MEMS electrothermal actuators based on high-voltage pulse excitation and on-chip status feedback

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-26 DOI: 10.1016/j.sna.2025.116487

Xiaoyu Kong, Yun Cao, Hengbo Zhu, Haining Lu, Shenghong Lei, Weirong Nie, Zhanwen Xi

{"title":"Energy-efficient MEMS electrothermal actuators based on high-voltage pulse excitation and on-chip status feedback","authors":"Xiaoyu Kong, Yun Cao, Hengbo Zhu, Haining Lu, Shenghong Lei, Weirong Nie, Zhanwen Xi","doi":"10.1016/j.sna.2025.116487","DOIUrl":"10.1016/j.sna.2025.116487","url":null,"abstract":"<div><div>Micro-Electro-Mechanical Systems (MEMS) electrothermal actuators (ETAs) are widely used for their compact design and compatibility with Integrated Circuits (ICs). However, their high energy consumption limits integration in energy-constrained systems. This paper introduces a novel approach to improve the energy efficiency of MEMS ETAs. High-voltage pulses are used to quickly drive the actuator to its target position, while a status feedback mechanism ensures timely power disconnection, reducing thermal damage from high-voltage excitation. The temperature and displacement responses of a V-shaped ETA under high-voltage pulse excitation are analyzed in detail. Experiments demonstrate that achieving a displacement of 160µm requires only 2.0 ms and consumes 80.5 mJ in a non-vacuum environment with a 64 V pulse, a 66.4% reduction in energy consumption compared to conventional methods. In a vacuum environment, a 30 V pulse achieves actuation in 11.0 ms with 90.4 mJ of energy consumption, a 77.7% reduction. Both experimental and simulation results highlight the effectiveness of this approach, achieving significant reductions in actuation time and energy consumption with higher input voltages.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116487"},"PeriodicalIF":4.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715376","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

Hybrid structured wearable flexible piezoresistive sensor with high sensitivity and wide detection range

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-26 DOI: 10.1016/j.sna.2025.116520

Yibo Liu , Huaping Xiao , Dezhi Pang , Shihao Sun , Zhenhao Sun , Shuhai Liu

{"title":"Hybrid structured wearable flexible piezoresistive sensor with high sensitivity and wide detection range","authors":"Yibo Liu , Huaping Xiao , Dezhi Pang , Shihao Sun , Zhenhao Sun , Shuhai Liu","doi":"10.1016/j.sna.2025.116520","DOIUrl":"10.1016/j.sna.2025.116520","url":null,"abstract":"<div><div>Flexible pressure sensors are indispensable in various applications, such as intelligent soft robots and wearable devices. However, developing low-cost, facile, flexible pressure sensors with high sensitivity and a wide detection range remains a great challenge. Here, we propose a simple and cost-effective flexible piezoresistive pressure sensor with a hybrid structure to obtain high sensitivity and a wide detection range. The hybrid structure is composed of micro cilia induced by a magnetic field and a porous polydimethylsiloxane (PDMS) structure using NaCl as a porogen. In contrast, multi-walled carbon nanotubes (MWCNTs) were used as a conductive coating. The synergistic effect of micro cilia and porous structure in the sensor achieved a maximum sensitivity of 13.16 kPa<sup>−1</sup> (approximately 21 times higher than that of the porous structure alone), a wide detection range (0–100 kPa), a rapid response time (∼118 ms), a low limit of detection (0.49 Pa), and long-term durability (>10000 cycles). The sensor also exhibits remarkable stability after 1500 cycles in 90 % RH environments. Moreover, the practical application of the sensor in detecting complex human motions and health monitoring is demonstrated, validating its potential for applications in wearable devices.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116520"},"PeriodicalIF":4.1,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725971","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