Sensors and Actuators A-physical最新文献_第10页

An efficient preparation method for ionic E-skin based on the electrospun PVDF-HFP/TPU/[EMIM][TFSI] films and its multi-functional applications 基于静电纺PVDF-HFP/TPU/[EMIM][TFSI]薄膜的离子电子皮肤高效制备方法及其多功能应用

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-27 DOI: 10.1016/j.sna.2025.117014

Yunlong Zhu , Zongcheng Jiang , Xiaofeng Zheng , Xudong Liu , Zhicheng Dong , Jian Li , Chuanjie Hu , Zhenyu Xue , Yangxin Zhou , Xudong Cheng , Peimei Dong

{"title":"An efficient preparation method for ionic E-skin based on the electrospun PVDF-HFP/TPU/[EMIM][TFSI] films and its multi-functional applications","authors":"Yunlong Zhu , Zongcheng Jiang , Xiaofeng Zheng , Xudong Liu , Zhicheng Dong , Jian Li , Chuanjie Hu , Zhenyu Xue , Yangxin Zhou , Xudong Cheng , Peimei Dong","doi":"10.1016/j.sna.2025.117014","DOIUrl":"10.1016/j.sna.2025.117014","url":null,"abstract":"<div><div>The emerging iontronic sensing mechanism offers a multi-mode sensing strategy that can decouple pressure and temperature in a single sensing unit, which is beneficial for the lightweight and multifunctional development of electronic skin (E-skin). However, at present, an effective preparation method for iontronic E-skins is still desired. Especially, the preparation of electrolytes containing ionic liquids has the risk of leakage, and it relies on strict encapsulation. Moreover, the cross-interference of pressure and temperature has a significant impact on the signal decoupling and the sensing sensitivities. In this study, we reported an effective approach for preparing ionic E-skin by integrating PU films with Ag electrodes and iontronic electrospun films. With the concentration of ionic liquids as the variable, the temperature sensing and pressure sensing exhibited different patterns. A detailed study on the cross-interference of pressure and temperature was also be conducted. The obtained E-skin with the optimal ionic concentration of 20 % achieved coordinated temperature and pressure sensing performances, which showed the high pressure sensitivity of 1.67 kPa<sup>−1</sup> in the range of 0 – 70 kPa, as well as a typical thermally activated behavior at temperature from 30 °C to 65 °C.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117014"},"PeriodicalIF":4.9,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911542","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

Integrated flexible biosensor system for multi-analyte breath monitoring: Piezoelectric barium titanate and Na-doped ZnO nanoflowers for wearable health diagnostics 用于多分析物呼吸监测的集成柔性生物传感器系统：用于可穿戴健康诊断的压电钛酸钡和na掺杂ZnO纳米花

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-26 DOI: 10.1016/j.sna.2025.117005

Hung-Yu Yeh , Guo-Hua Feng

{"title":"Integrated flexible biosensor system for multi-analyte breath monitoring: Piezoelectric barium titanate and Na-doped ZnO nanoflowers for wearable health diagnostics","authors":"Hung-Yu Yeh , Guo-Hua Feng","doi":"10.1016/j.sna.2025.117005","DOIUrl":"10.1016/j.sna.2025.117005","url":null,"abstract":"<div><div>This study presents a flexible, low-power, integrated sensor system for accurate, non-invasive breath monitoring, vital for real-time health assessment and early disease detection. It integrates a piezoelectric barium titanate (BTO) cantilever respiratory flow sensor for respiratory flow measurement and a Na-doped ZnO nanoflower film for selective gas and humidity sensing. The BTO cantilever generates voltage signals in response to the airflow, and the Na-doped ZnO chemoresistive sensor facilitates multi-analyte detection. The integrated sensor system achieved a 0.82 ppm detection limit for acetone, showing a sensitivity of 0.00682/ppm within the 2–10 ppm range, and demonstrated rapid and reversible impedance response to ammonia (20–80 ppm), with significantly faster fall times (30–40 s) compared to commercial sensors (120–130 s). It also showed high sensitivity to humidity (30–80 % RH), all within clinically relevant ranges. This platform offers practical advantages, including fast response/recovery times, low-power ambient temperature operation, and flexible substrate compatibility, addressing critical challenges in current breath sensor technologies. Fabricated via hydrothermal and precipitation methods, the system was validated using BiPAP-generated airflow and human breath, with an AutoRegressive with exogenous input (ARX) model enabling accurate voltage-to-flow rate mapping and providing high-resolution signal mapping for respiratory flow. This compact, multifunctional sensor system is well-suited for continuous respiratory monitoring, wearable diagnostics, and next-generation point-of-care health technologies.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117005"},"PeriodicalIF":4.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903594","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

Encapsulated U-shape lossy mode resonance optical fibre sensor for temperature quantification of lithium-ion batteries 用于锂离子电池温度量化的封装u形有损模式谐振光纤传感器

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-26 DOI: 10.1016/j.sna.2025.117004

Keith M. Alcock , Keng Goh , Mustehsan Beg , Sonia Melendi-Espina , Miguel Hernaez

{"title":"Encapsulated U-shape lossy mode resonance optical fibre sensor for temperature quantification of lithium-ion batteries","authors":"Keith M. Alcock , Keng Goh , Mustehsan Beg , Sonia Melendi-Espina , Miguel Hernaez","doi":"10.1016/j.sna.2025.117004","DOIUrl":"10.1016/j.sna.2025.117004","url":null,"abstract":"<div><div>Accurate measurement of essential operational parameters in electrochemical energy storage devices is vital for ensuring reliable and long-lasting performance in a circular economy. This study presents the first use of a Lossy Mode Resonance (LMR) optical fibre sensor to measure the temperature of lithium-ion batteries, which is a highly influential aspect of their degradation. This technique enables an effective and simple application of optical fibre sensors for energy storage devices. The design involves using a U-shaped fibre to accurately detect changes in absorption, rather than changes in wavelength. Additionally, it incorporates a thin-film of graphene oxide and polyethyleneimine to induce the LMR which is enclosed within polydimethylsiloxane which alters refractive index with temperature. The total sensitivity reached is −0.0072 A.U./°C and −0.39 nm/°C, with excellent linearity values of R² 0.98 and R² 0.99 for the 2 C and 2.5 C discharge rates, respectively. This work emphasises the affordable, accurate, and innovative use of LMR sensors, which encourages the advancement and utilisation of these sensors in electrochemical energy storage systems.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117004"},"PeriodicalIF":4.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911535","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

Engineering self-assembled bilayer hyper-elastic electronic skin with a disrupted toughness-hysteresis trade-off: Fabrication, characterization, and applications 工程自组装双层超弹性电子皮肤与破坏韧性-滞后权衡：制造，表征和应用

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-26 DOI: 10.1016/j.sna.2025.117006

Sagnik Choudhury , Deepak Pandey , Rajan Singh , Sougata Karmakar , Aman Arora , Soumen Sen , Nripen Chanda , Soumen Mandal

{"title":"Engineering self-assembled bilayer hyper-elastic electronic skin with a disrupted toughness-hysteresis trade-off: Fabrication, characterization, and applications","authors":"Sagnik Choudhury , Deepak Pandey , Rajan Singh , Sougata Karmakar , Aman Arora , Soumen Sen , Nripen Chanda , Soumen Mandal","doi":"10.1016/j.sna.2025.117006","DOIUrl":"10.1016/j.sna.2025.117006","url":null,"abstract":"<div><div>Electronic skin (e-skin) designed for human activity and health monitoring often faces a trade-off between toughness and hysteresis, where increased toughness typically results in significant hysteresis, compromising sensing reliability. Here, we report a tough yet low-hysteresis e-skin, achieved through a self-assembled bilayer architecture consisting of a porous hyper-elastic Ecoflex layer embedded with multi-walled carbon nanotube (MWCNT) based conductive ink and a non-porous hyper-elastic matrix. The porous layer provides low Young’s modulus and reduced toughness, while the non-porous layer enhances Young’s modulus and overall toughness, effectively disrupting the conventional toughness-hysteresis correlation. The toughness of the bilayer was ∼9 times higher and the hysteresis was ∼2 times lower compared to its constituents. The physics behind the disruption observed from the experiments was studied by finite element simulations where strain softening effect could be observed as a cause of this disruption. Structural characterization confirms a uniform bilayer configuration with well-dispersed MWCNTs, ensuring superior mechanical resilience, minimal hysteresis, and optimal electrical conductivity. The sensor demonstrates a strain sensitivity of 2.4 up to 600 % strain, rapid response time of 81 ms, minimal dynamic drift, 0.1 % of strain resolution, and an outstanding repeatability and durability. Applications demonstrated include wearable sensing for mechanical impedance-based muscle fatigue assessment and assessment of elongation in air-burst testing of male condoms, highlighting its potential for both biomedical and industrial applications.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117006"},"PeriodicalIF":4.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911540","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

First report on hydroelectric cell-driven gas sensor for the detection of ethanol at room temperature: A novel approach 首次报道用于室温下乙醇检测的水力电池驱动气体传感器：一种新方法

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-25 DOI: 10.1016/j.sna.2025.117003

Nikita Jain , Hemant K. Arora , Sunil Kumar , Nitin K. Puri

{"title":"First report on hydroelectric cell-driven gas sensor for the detection of ethanol at room temperature: A novel approach","authors":"Nikita Jain , Hemant K. Arora , Sunil Kumar , Nitin K. Puri","doi":"10.1016/j.sna.2025.117003","DOIUrl":"10.1016/j.sna.2025.117003","url":null,"abstract":"<div><div>A novel self-powered ethanol gas sensor, exhibiting excellent selectivity, sensitivity, and stability, has been developed based on n-type SnS nanoflakes at room temperature (RT). The n-type SnS-based HEC serves as the power source for self-powered ethanol gas sensors, enabling the detection of various concentrations of ethanol gas at RT. Consequently, the power supply and gas sensor have been effectively combined into a single device, demonstrating a successful integration of both functionalities. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Energy dispersive X-ray (EDX) and Brunauer-Emmett-Teller (BET) analysis have confirmed the formation of orthorhombic SnS nanoflakes with a high specific surface area (6.15 m<sup>2</sup> g<sup>−1</sup>). The observed voltage-current (V-I) characteristic curves of the HEC at RT have shown a maximum current (I<sub>max</sub>) of 40 μA and voltage of 1.03 V. The sensing performance of the self-powered ethanol gas sensor has been analysed for various concentrations of ethanol gas (10–300 ppm). The sensor has exhibited a response value (R<sub>a</sub>/R<sub>g</sub>) of 41.3 to 100 ppm ethanol gas concentration, with quick response/recovery times of 27.3 s/31.4 s respectively at RT. The sensor has shown promising potential for prolonged ethanol gas detection, operating successfully for 30 days with measurements taken every 5 days. The experimental results demonstrate that the n-type SnS-based self-powered ethanol gas sensor is a promising platform for integration into future large-scale IoT systems. This breakthrough paves the way for more versatile and scalable IoT solutions, enabling continuous environmental monitoring and data collection across various settings.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117003"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922316","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

Human respiration monitoring using humidity and temperature dual-modal sensors for temperature-insensitive humidity sensing and synchronous temperature sensing 人体呼吸监测采用温湿度双模态传感器进行温度不敏感湿度传感和同步温度传感

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-25 DOI: 10.1016/j.sna.2025.117008

Wei Shi , Xing Yang , Langhuan Lei , Jiali Lin, Qiuyu Liang, Xiaozhi Huang, Qiuxia Wu, Wei Li

{"title":"Human respiration monitoring using humidity and temperature dual-modal sensors for temperature-insensitive humidity sensing and synchronous temperature sensing","authors":"Wei Shi , Xing Yang , Langhuan Lei , Jiali Lin, Qiuyu Liang, Xiaozhi Huang, Qiuxia Wu, Wei Li","doi":"10.1016/j.sna.2025.117008","DOIUrl":"10.1016/j.sna.2025.117008","url":null,"abstract":"<div><div>Humidity and temperature are two inseparable basic environmental physical quantities. The flexible humidity and temperature sensors play a crucial role in human health monitoring. However, their cross-sensitivity to temperature and relative humidity (RH) variations usually leads to unwanted signal interference, which significantly hinders their practical application. Moreover, the manufacturing cost of flexible humidity and temperature sensors also greatly limits their wide application. Herein, we fabricated humidity and temperature dual-mode sensors by simple printing and spraying processes, and their sensitive materials are completely derived from graphene oxide (GO), which achieved temperature-insensitive humidity sensing and synchronous temperature sensing. In the RH range of 20–90 %, the resistance of the humidity sensor was decreased by four orders of magnitude. While at applied frequency of 100 Hz, capacitance of the humidity sensor was increased from 9.51 pF to 76.05 pF in the range of 20–90 %RH. The temperature sensor exhibits a high sensitivity of 1.66 % /℃ in the range of 25–45 ℃. Remarkably, benefiting from the fact that the humidity sensor is insensitive to the test temperature in the capacitive working mode, and the packaging strategy of temperature sensor isolates the external humidity change, the dual-modal sensors can distinguish the temperature and humidity change at the same time. Finally, the humidity and temperature dual-modal sensors have been successfully applied to the detection of human respiratory frequency. This provides an important method for developing low-cost and integrated multifunctional flexible sensors.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117008"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144902523","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

Energy harvesting from pulsatile Superior Vena Cava for implantable devices 从脉动上腔静脉收集能量用于植入式装置

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-25 DOI: 10.1016/j.sna.2025.116993

Mostafa G. Abdelmageed , Ahmed M.R. Fath El-Bab , Ahmed A. Abouelsoud , Moataz Elsisy

{"title":"Energy harvesting from pulsatile Superior Vena Cava for implantable devices","authors":"Mostafa G. Abdelmageed , Ahmed M.R. Fath El-Bab , Ahmed A. Abouelsoud , Moataz Elsisy","doi":"10.1016/j.sna.2025.116993","DOIUrl":"10.1016/j.sna.2025.116993","url":null,"abstract":"<div><div>A pacemaker is an implantable electronic medical device powered by a lithium-iodine battery and designed to regulate abnormal heart rhythms via electrical pulses. One of the major limitations of such devices is the finite battery lifespan, necessitating surgical replacement. This study explores the feasibility of harvesting energy from pulsatile blood flow in large veins, specifically the Superior Vena Cava (SVC) to supplement or extend the battery life of implanted devices such as pacemakers. An experimental setup was developed to simulate the pulsatile flow in the SVC using a hydraulic system driven by a cam mechanism to replicate the physiological blood velocity profile. A Polyvinylidene Fluoride (PVDF) piezoelectric sensor, positioned within the flow stream, undergoes harmonic deformation due to fluid-induced forces, thereby generating electrical charges through the piezoelectric effect. Output voltage and power were measured across a range of resistive loads under four heart rates: 60, 80, 100, and 120 beats per minute (bpm). The corresponding peak power outputs were 0.5, 2, 8.5, and 35 nW, with steady-state voltages of approximately 0.3, 0.5, 1.0, and 1.7 V, respectively. The process was further modeled using Finite Elements simulation and MATLAB, with the simulation results showing strong agreement with experimental trends. Simulated power outputs were 2, 7.5, 20, and 45 nW at the respective heart rates. Although the harvested power is modest, it demonstrates potential for enhancing device longevity. Future improvements—such as deploying multiple harvesters, optimizing device geometry, and substituting PVDF with higher-performance materials like Lead Zirconate Titanate (PZT) could significantly improve energy harvesting efficiency in implantable medical electronics.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 116993"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908353","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 non-negligible role of opening size in acoustic streaming thrust of entrapped microbubbles 孔径大小对俘获微泡声流推力的影响不容忽视

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-25 DOI: 10.1016/j.sna.2025.117009

Tao Luo , Dongyang Chen , Chongjie Jiang , Yingying Dai , Jinyang Le , Wei Zhou , Yu Xie

{"title":"The non-negligible role of opening size in acoustic streaming thrust of entrapped microbubbles","authors":"Tao Luo , Dongyang Chen , Chongjie Jiang , Yingying Dai , Jinyang Le , Wei Zhou , Yu Xie","doi":"10.1016/j.sna.2025.117009","DOIUrl":"10.1016/j.sna.2025.117009","url":null,"abstract":"<div><div>Ultrasound-actuated microrobots that incorporate entrapped microbubbles rely on acoustic streaming thrust for propulsion. While bubble size and resonance have been extensively studied, the role of opening size remains less understood. In this study, we numerically investigate how the opening size affects both streaming flow and the resulting thrust. Finite element analysis (FEA) reveals that although streaming velocity increases with oscillation amplitude and opening size, the generated thrust does not always scale proportionally. Counterintuitively, microbubbles with larger openings are more likely to produce greater thrust than those with smaller openings under identical acoustic excitation, despite generating weaker streaming flows. This phenomenon is experimentally confirmed using a microcantilever-based thrust measurement system. Our study provides key insights into the mechanics of microbubble-driven propulsion and highlight the the critical role of opening size in acoustic streaming thrust, offering valuable guidance for the design of next-generation microbubble-based acoustic microrobots for various biomedical applications.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117009"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911534","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

Design of a spring-line-shaped stretchable antenna with up to 40 % stretch ratio for human body strain sensing applications 一种弹簧线形可拉伸天线的设计，拉伸率高达40% %，用于人体应变传感应用

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-25 DOI: 10.1016/j.sna.2025.117010

Yimeng Wang , Yahui Hou , Shuhui Yang , Fang Yan , Han Qi , Rui Liu , Changyin Liu , Ziyi Chen , Li Zhang , Bin Li , Jingjing Liang , Jiajie Chu , Kaili Huo , Chenyin Yu

{"title":"Design of a spring-line-shaped stretchable antenna with up to 40 % stretch ratio for human body strain sensing applications","authors":"Yimeng Wang , Yahui Hou , Shuhui Yang , Fang Yan , Han Qi , Rui Liu , Changyin Liu , Ziyi Chen , Li Zhang , Bin Li , Jingjing Liang , Jiajie Chu , Kaili Huo , Chenyin Yu","doi":"10.1016/j.sna.2025.117010","DOIUrl":"10.1016/j.sna.2025.117010","url":null,"abstract":"<div><div>With the continuous update of communication technology, smart wearable devices are developing rapidly. It can be equipped with various sensors to monitor physiological indicators, helping users better understand their health conditions. Compared to traditional strain sensors, stretchable antennas have the characteristics of small size, low power consumption, and conformal integration with the skin. A stretchable antenna with a spring-line-shaped (SLS) structure is presented in this paper, exhibiting a stretch ratio of up to 40 %. We introduce the evolution process of the antenna structure and analyze the factors affecting the stretchability of SLS antenna. When the antenna is attached to human tissue, the specific absorption rate (SAR) value is 0.007 W/kg. The experimental results show that within the strain range of 0–40 %, the resonant frequency varies from 2.8 to 3.07 GHz and |<em>S</em><sub>11</sub>| remains below −15 dB. The Gauge Factor (GF) reaches 0.23, and the goodness of fit is 0.96. Hence, the proposed antenna has an excellent application prospect in the wearable device field.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117010"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917960","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

Graphene nanoribbons: A cutting-edge material for the point-of-care cancer biomarker detection 石墨烯纳米带：用于即时癌症生物标志物检测的尖端材料

IF 4.9 3区工程技术

Sensors and Actuators A-physical Pub Date : 2025-08-25 DOI: 10.1016/j.sna.2025.117007

Jincymol Kappen , Katarzyna Krukiewicz

{"title":"Graphene nanoribbons: A cutting-edge material for the point-of-care cancer biomarker detection","authors":"Jincymol Kappen , Katarzyna Krukiewicz","doi":"10.1016/j.sna.2025.117007","DOIUrl":"10.1016/j.sna.2025.117007","url":null,"abstract":"<div><div>Graphene nanoribbons (GNRs), being quasi-one-dimensional strips of single-layer graphene, are a fascinating material among the others in the graphene family due to their unique edge and width-oriented semiconducting properties. Possible to be formed using both the top-down and bottom-up synthesis routes, GNRs are available in numerous forms, including zig-zag, armchair, chiral, chevron, cove, and gulf structures, each resulting in an exceptional set of physicochemical properties suitable for a variety of specific applications. Recent research has shown the exceptional applicability of GNRs in the biomedical field, since the possibility of covalent and non-covalent functionalization of GNRs generates an excellent platform for the immobilization of biological molecules and their biosensing, also those present in ultra-low quantities. This systematic review aims to present the potential of GNRs in the field of the electrochemical detection of cancer biomarkers, which should be identified as early as possible for the accurate diagnosis and prognosis. After providing a concise introduction to GNRs, including their classification, properties, and synthesis routes, this review discusses recent developments in GNRs-based point-of-care detection methods, highlighting their great potential in biosensing and enlightening their prospects in future research.</div></div>","PeriodicalId":21689,"journal":{"name":"Sensors and Actuators A-physical","volume":"395 ","pages":"Article 117007"},"PeriodicalIF":4.9,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917961","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