Sensors and Actuators A-physical最新文献_第9页

A multifunctional platform for the production and customization of polymer-based microneedle devices

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-21 DOI: 10.1016/j.sna.2025.116491

Andrea Bocchino , Carlota Marquez-Grana , Om Prakash Singh , Eva Melnik , Steffen Kurzhals , Giorgio C. Mutinati , Sion Coulman , Christopher Martin , Keng Wooi Ng , Mariane Massufero Vergilio , James Birchall , Paul Donovan , Paul Galvin , Conor O’Mahony

{"title":"A multifunctional platform for the production and customization of polymer-based microneedle devices","authors":"Andrea Bocchino , Carlota Marquez-Grana , Om Prakash Singh , Eva Melnik , Steffen Kurzhals , Giorgio C. Mutinati , Sion Coulman , Christopher Martin , Keng Wooi Ng , Mariane Massufero Vergilio , James Birchall , Paul Donovan , Paul Galvin , Conor O’Mahony","doi":"10.1016/j.sna.2025.116491","DOIUrl":"10.1016/j.sna.2025.116491","url":null,"abstract":"<div><div>Polymer microneedles (MNs) have significant potential for use in transdermal delivery and diagnostics applications due to their low cost, versatility, and compatibility with medical grade materials and industrial manufacturing processes. These polymers can also have a wide range of different and desirable properties such as biocompatibility, degradability, and flexibility. To facilitate rapid development of these devices, a multifunctional manufacturing process, easily adaptable to a range of different materials and use cases, would be highly beneficial for research and prototyping purposes. With that in mind, we have developed a multifunctional platform that may be used to produce sharp-tipped microneedle arrays with a variety of substrate materials, mechanical characteristics, electrical properties, and diagnostic functionalities. The paper first presents an outline of the platform concept and the double-sided moulding process that lies at its core, followed by a description of the various add-on steps that are used to customise the geometrical, mechanical, electrical, and functional aspects of the arrays. Finally, we illustrate the versatility of the platform with three exemplars, namely a solid, electrochemically active MN sensor for biomarker diagnostics, a fabric-backed, flexible MN electrode for biopotential monitoring, and a biodegradable array for transdermal drug delivery.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116491"},"PeriodicalIF":4.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695990","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

Two sides in one coin: Emerging biomimetic multistage ordered microstructure-based adhesion and microfluidics

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-21 DOI: 10.1016/j.sna.2025.116496

Meng Wei, Tong Wu, Baoyang Lin, Qian Zhou, Bingbing Gao

{"title":"Two sides in one coin: Emerging biomimetic multistage ordered microstructure-based adhesion and microfluidics","authors":"Meng Wei, Tong Wu, Baoyang Lin, Qian Zhou, Bingbing Gao","doi":"10.1016/j.sna.2025.116496","DOIUrl":"10.1016/j.sna.2025.116496","url":null,"abstract":"<div><div>Bionic structures significantly influence the design of intelligent sensing patches, particularly through biomimetic microstructures. These microstructures enhance adhesion by forming robust microscale connections while maintaining macroscale stability. The porous nature of these materials facilitates liquid flow, enabling their use in microfluidic devices. This structural adhesion minimizes contamination, improving microfluidic signal accuracy. Despite these advantages, challenges remain in maintaining performance under high humidity, oil contamination, and extreme temperatures. Additionally, integrating biomimetic structures with microfluidic systems poses scalability and complexity obstacles. Numerous studies have focused on bionic adhesion in health-monitoring systems, examining material composition, adhesion mechanisms, and isolated microfluidic applications, but a comprehensive review addressing the synergistic contributions of multistage bionic structures to both adhesion and microfluidic performance is lacking. This paper reviews recent advancements in multistage bionic structures for adhesion and microfluidic integration, focusing on design improvements and potential applications. It analyzes the impact of common, composite, and multilevel ordered structures on adhesion and microfluidic properties. Finally, this study highlights the potential of these innovations to guide future research in the development of efficient, scalable, and multifunctional bionic systems for industrial and biomedical applications.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116496"},"PeriodicalIF":4.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684889","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

The impact of the epoxy thin-film layer on microwave-based SnO2 gas sensor for NO2 detection

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-20 DOI: 10.1016/j.sna.2025.116498

D. Grochala , A. Paleczek , K. Staszek , M. Kocoń , K. Segełyn , Ł. Błajszczak , A. Rydosz

{"title":"The impact of the epoxy thin-film layer on microwave-based SnO2 gas sensor for NO2 detection","authors":"D. Grochala , A. Paleczek , K. Staszek , M. Kocoń , K. Segełyn , Ł. Błajszczak , A. Rydosz","doi":"10.1016/j.sna.2025.116498","DOIUrl":"10.1016/j.sna.2025.116498","url":null,"abstract":"<div><div>A microwave gas sensor with tin dioxide as a gas-sensitive layer and epoxy thin film for enhanced detection of nitrogen dioxide in a harsh environment with high relative humidity content is proposed. An optimized transmission line type of sensors operated in the 1.5 GHz – 4.5 GHz was tested under exposure to: NO<sub>2</sub> in the 0–100 ppm range, operating temperature in the range of 22–60 °C and relative humidity 0–85 % range. The cross-sensitivity was tested under exposure to common volatile organic compounds such as acetone, and ethanol. The sensors’ response (S) is given in phase changes based on wideband measurements. The advantage of wideband measurements compared to a single value is that they are based on multiple measurements taken at different frequencies. This greatly suppresses noise and enables measuring low target-gas concentrations within environments of high interfering compounds. The experimental results confirmed that using an additional epoxy thin film layer can reduce the impact of relative humidity on the gas-sensing properties of nitrogen dioxide in the microwave frequency range. The results should be considered a starting point for further investigation and pave the way for implementing microwave-gas sensors in harsh environments.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116498"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684835","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

Modeling and analysis of phase characteristics in NMOR atomic magnetometers

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-20 DOI: 10.1016/j.sna.2025.116462

Yanchao Chai , Liwei Jiang , Mengnan Tian , Xin Zhao , Jiali Liu , Junlin Chen , Zhenglong Lu , Zhuo Wang , Xusheng Lei

{"title":"Modeling and analysis of phase characteristics in NMOR atomic magnetometers","authors":"Yanchao Chai , Liwei Jiang , Mengnan Tian , Xin Zhao , Jiali Liu , Junlin Chen , Zhenglong Lu , Zhuo Wang , Xusheng Lei","doi":"10.1016/j.sna.2025.116462","DOIUrl":"10.1016/j.sna.2025.116462","url":null,"abstract":"<div><div>The NMOR atomic magnetometer enables measurement ranging from zero field to geophysical-scale fields, offering significant advantages in complex magnetic field environment. It achieves precise magnetic field measurement by detecting either amplitude or phase information. However, despite the fact that phase information extraction is more widely in practical applications, current research aimed at developing a comprehensive phase output model remains insufficient. In this paper, we develop a detailed phase information model for the optical modulation NMOR atomic magnetometer, deriving analytical solutions for measurement in geophysical-scale magnetic fields. Experimental results demonstrate that the phase scale factor exhibits a lower attenuation rate compared to the amplitude scale factor, resulting in more stable magnetic field measurement outcomes. Meanwhile, noise analysis identifies magnetic noise and optical power fluctuation-induced noise as the primary factors affecting the sensitivity of the NMOR atomic magnetometer. These findings demonstrate the advantages of phase detection in high-field measurement, providing valuable insights for enhancing the performance and broadening the applications of the NMOR atomic magnetometer.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116462"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684898","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

3D flower-like Co3O4@ZnO nanostructures for trace-level acetone detection at low operating temperatures

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-20 DOI: 10.1016/j.sna.2025.116479

Muhammad Hilal , Yasir Ali , Zhicheng Cai , Hyojung Kim , Hany S. Abdo , Ibrahim A. Alnaser , Yongha Hwang

{"title":"3D flower-like Co3O4@ZnO nanostructures for trace-level acetone detection at low operating temperatures","authors":"Muhammad Hilal , Yasir Ali , Zhicheng Cai , Hyojung Kim , Hany S. Abdo , Ibrahim A. Alnaser , Yongha Hwang","doi":"10.1016/j.sna.2025.116479","DOIUrl":"10.1016/j.sna.2025.116479","url":null,"abstract":"<div><div>Enhancing p-type metal oxide semiconductors (MOS) sensitivity at low temperatures is critical for detecting acetone, a toxic pollutant and diabetes biomarker. This study presents a 3D flower-like Co<sub>3</sub>O<sub>4</sub>@ZnO composite synthesized via additive-free hydrothermal method combined with inert gas calcination. The inert gas environment minimizes oxidation and oxygen interference, forming a robust nanoneedle-based hierarchical structure with high integrity, a large surface area (52.13 m<sup>2</sup>g<sup>−1</sup>), and uniform mesopores (∼10 nm) to facilitate efficient gas diffusion and reactions. The ZnO-Co<sub>3</sub>O<sub>4</sub> heterojunction enhances band-bending modulation and refines carrier dynamics by synergizing ZnO’s exceptional carrier mobility with Co₃O₄’s robust redox catalytic activity, delivering markedly improved sensing performance. The optimized composite (CZ-3, Co<sub>3</sub>O<sub>4</sub>:ZnO = 0.5:0.5) demonstrated exceptional acetone sensing performance, achieving a 35.85% response to 100 ppm acetone at 150 °C, rapid response/recovery times of 40/28 s, a linear detection range of 1–150 ppm, and an ultra-low detection limit of 100 ppb. The sensor also exhibited a measurable response (0.35 %) to human exhaled breath, demonstrating its potential for non-invasive healthcare diagnostics. In contrast, the lower ZnO content in Co<sub>3</sub>O<sub>4</sub> (CZ-1) sensor showed reduced performance, responding to 500 ppb acetone with a response of 29% to 100 ppm. These results emphasize the critical role of the heterojunction with an optimized balance of p- and n-MOS in enhancing sensing performance, highlighting a sustainable and scalable approach for advancing high-performance p-type MOS gas sensors. The proposed composite demonstrates significant potential for precise, low-temperature acetone detection in environmental monitoring and non-invasive healthcare diagnostics.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116479"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684899","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

Sub-gram PZT actuated micro rotation stages realizing high bandwidth and load

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-20 DOI: 10.1016/j.sna.2025.116488

Junji Pu, Yulie Wu, Chunyan Qu, Canhui Yin, Dingbang Xiao, Xuezhong Wu

引用次数: 0

Lithography-free, low-cost, picowatt-resolution calorimeter for micro and nanoscale thermal characterization

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-20 DOI: 10.1016/j.sna.2025.116494

Sai C. Yelishala , Connor Murphy , Longji Cui

{"title":"Lithography-free, low-cost, picowatt-resolution calorimeter for micro and nanoscale thermal characterization","authors":"Sai C. Yelishala , Connor Murphy , Longji Cui","doi":"10.1016/j.sna.2025.116494","DOIUrl":"10.1016/j.sna.2025.116494","url":null,"abstract":"<div><div>Advanced high-resolution thermal characterization tools for micro- and nanoscale materials often rely on costly iterative design and time-consuming microfabrication steps such as lithography and etching. While providing valuable insights, this creates significant technical barriers to the wide adoption of these techniques beyond the specialized research areas of heat transfer and thermal sensing. Furthermore, microfabricated calorimeters with typical suspended thermal bridge designs lack multi-degree-of-freedom manipulation of materials and suffer from low mechanical stiffness for robust long-term operation. This study presents a micro and nanoscale thermal characterization platform that eliminates the need for lithography while achieving ultrahigh thermal resolution. Using a four-thermistor configuration and noise mitigation technique, we demonstrated a peak-to-peak temperature resolution of ± 12 µK and a heat resolution of 250 pW at room temperature. The calorimeter device also features high stiffness in all directions and offers three degrees of freedom for high-precision positioning and manipulation. We validated the sensing capability of this platform by measuring the thermal conductivity of microscale polymer fibers, wherein the background radiative thermal conductance and thermal contact resistance are evaluated concurrently. This work's low-cost, easy-to-manufacture calorimeter paves the way to expand the accessibility of high-sensitivity thermal characterization tools in various applications, such as new material discovery, thermoelectrics, and environmental and biochemical sensing.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116494"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684834","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

Stiffness estimation and finger-object impact detection with a robotic gripper using intrinsic sensors

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-20 DOI: 10.1016/j.sna.2025.116463

Simone Cortinovis, Marco Maggiali, Rocco A. Romeo

{"title":"Stiffness estimation and finger-object impact detection with a robotic gripper using intrinsic sensors","authors":"Simone Cortinovis, Marco Maggiali, Rocco A. Romeo","doi":"10.1016/j.sna.2025.116463","DOIUrl":"10.1016/j.sna.2025.116463","url":null,"abstract":"<div><div>Robotics applications grow impressively year after year. While robots are subject to considerable technological and behavioral improvements, robotic grippers, often acting as end-effectors in a vast range of industrial scenarios, still suffer from limited performance. In this article, specific algorithms that may improve the performance of robotic grippers are proposed. The algorithms allow the implementation of functions that are not available on commercial end-effectors, namely: (1) to safely grip items regardless the size and hardness at high finger velocity (up to 16.5 mm/s) and (2) to estimate stiffness in a wide range (up to ca. 92 N/mm). As a key advantage, the above functions were implemented resorting to the sole <em>intrinsic</em> sensors, i.e. sensors included in the gripper itself as per construction. Moreover, no mechanical adjustments, such as dampening elements or flexible fingers, are required. Experiments on two different setups, involving bench trials and validation on a fully integrated robotic platform, demonstrate a clear enhancement of gripper performance when exploiting the proposed algorithms.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116463"},"PeriodicalIF":4.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715377","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

Single-mode fiber tip for enhancing optical trapping of silica particles

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-19 DOI: 10.1016/j.sna.2025.116466

Nik Noor Haryatul Eleena Nik Mahmud , Fung Keat Lim , Noor Azura Awang , Prakash Joshi , Wan Maryam Wan Ahmad Kamil

引用次数: 0

A board-level temperature compensation method for precise seawater conductivity measurement

IF 4.1 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-03-19 DOI: 10.1016/j.sna.2025.116485

Jianwei Liu , Zengxing Zhang , Yonghua Wang , Jianyi Zheng , Yuzhen Guo , Bin Yao , Shiqiang Zhang , Junmin Jing , Yanbo Xu , Chenyang Xue

{"title":"A board-level temperature compensation method for precise seawater conductivity measurement","authors":"Jianwei Liu , Zengxing Zhang , Yonghua Wang , Jianyi Zheng , Yuzhen Guo , Bin Yao , Shiqiang Zhang , Junmin Jing , Yanbo Xu , Chenyang Xue","doi":"10.1016/j.sna.2025.116485","DOIUrl":"10.1016/j.sna.2025.116485","url":null,"abstract":"<div><div>The impact of temperature on instrument measurements is widespread. To mitigate the significant measurement errors caused by temperature variations affecting board-level circuits during in-situ seawater conductivity measurements, a series of experiments are conducted using a seven-electrode conductivity sensor as a case study. A multivariate polynomial regression algorithm is employed for temperature compensation. After designing the instrument structure, sensor, and circuitry, six pure resistors are used to simulate the conductivity cell and experimentally evaluate the effects of temperature changes on the circuit. After calibration at the Institute of Ocean Engineering in Qingdao, China, test results indicate that, within the conductivity range of 30.678–67.214 mS/cm, covering most seawater environments, the instrument’s accuracy improves from ± 0.007 mS/cm to ± 0.002 mS/cm after implementing the temperature compensation model over a temperature range of −10 ℃ to 40 ℃. Results demonstrate that the proposed compensation method effectively reduces temperature-induced drift and enhances measurement accuracy.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"388 ","pages":"Article 116485"},"PeriodicalIF":4.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684896","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