IEEE Sensors Letters最新文献_第7页

Position Encoding in Detection-Based LiDAR–Camera Matching: A Diagnostic Study At Infrastructure Sites 基于检测的激光雷达-相机匹配中的位置编码：基础设施站点的诊断研究

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-06-30 DOI: 10.1109/LSENS.2026.3708462

Lihao Guo;Jiahao Tang;Tam Bang;Tianya Zhang;Austin Harris;Mina Sartipi;Siyang Cao

{"title":"Position Encoding in Detection-Based LiDAR–Camera Matching: A Diagnostic Study At Infrastructure Sites","authors":"Lihao Guo;Jiahao Tang;Tam Bang;Tianya Zhang;Austin Harris;Mina Sartipi;Siyang Cao","doi":"10.1109/LSENS.2026.3708462","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3708462","url":null,"abstract":"We present a diagnostic study of learnable position encoding (PE) in the matching front-end of detection-based light detection and ranging (LiDAR)–camera calibration (detect<inline-formula><tex-math>$rightarrow$</tex-math></inline-formula>match<inline-formula><tex-math>$rightarrow$</tex-math></inline-formula>perspective-<inline-formula><tex-math>$n$</tex-math></inline-formula>-point, PnP). Across three infrastructure sites (A9 Highway, university of tennessee at chattanooga (UTC)3, and UTC4), four PE variants are evaluated on a residual network (ResNet) backbone and a crop-level Vision Transformer (ViT). Learnable 2D-only position fusion reaches 97.9% rank-1 matching accuracy (Top-1) and matches or exceeds the full depth-aware variant at every site; on these fixed-gantry sites, explicit depth/3-D branches add no measurable in-domain benefit, and the crop-level ViT matches ResNet with PE without explicit object-centroid PE. Bidirectional UTC4<inline-formula><tex-math>$leftrightarrow$</tex-math></inline-formula>UTC3 zero-shot transfer then collapses <italic>all architectures (including 2D-only) by 65%–93%, suggesting that learnable position fusion may contribute to cross-site generalization failure, together with appearance/domain shift. A two-stage Top-<inline-formula><tex-math>$K$</tex-math></inline-formula> retrieve with a refine pipeline also reduces matching latency from seconds [pairwise baseline (Cheng et al., 2026)] to tens of milliseconds on a desktop graphics processing unit (GPU).","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"6007404-6007404"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148627263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible Temperature Sensors Based on Electrospun MXene-PEO Nanofibers With Thermally Activated Interflake Transport 基于电纺丝MXene-PEO纳米纤维热活化片间传输的柔性温度传感器

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-09 DOI: 10.1109/LSENS.2026.3711929

Monika Swami;Dhayalan Shakthivel;Ravinder Dahiya

{"title":"Flexible Temperature Sensors Based on Electrospun MXene-PEO Nanofibers With Thermally Activated Interflake Transport","authors":"Monika Swami;Dhayalan Shakthivel;Ravinder Dahiya","doi":"10.1109/LSENS.2026.3711929","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3711929","url":null,"abstract":"Flexible temperature sensors based on 2-D MXene have conventionally relied on dense conductive films, where thermoresistive response is governed by intrinsic metallic phonon scattering, an inherent constraint on sensitivity. Here, we report a morphology-driven transport engineering strategy in which electrospun Ti3C2Tx MXene/poly(ethylene oxide) (MXene-PEO) composite nanofiber networks are architected to operate in a high-resistance, junction-dominated transport regime. The porous, interconnected fiber architecture yields a baseline resistance exceeding 100 MΩ, enabling large-amplitude resistance modulation under thermal stimulus. The sensor exhibits a stable, reversible thermoresistive response over 25 °C –75 °C, with a linear temperature coefficient of resistance (TCR) of −1.68 ± 0.19%/°C (R2 = 0.95) and negligible hysteresis across repeated heating and cooling cycles. The negative TCR is consistent with thermally activated charge transport across polymer-separated MXene interflake junctions, where PEO acts as a thermally responsive tunneling barrier rather than a passive binder. An Arrhenius analysis yields an activation energy of 0.33 ± 0.02 eV, confirming barrier-limited interflake transport. This work establishes electrospun MXene-PEO nanofiber networks as a viable platform for sensitivity-enhanced, mechanically compliant temperature sensing in wearable electronics.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"4502704-4502704"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148627535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-Morphology ZnO Nanowire Photodetectors With Heterogeneous Readout Integration for UV Dosimetry 具有非均匀读出积分的双形态ZnO纳米线光电探测器用于紫外剂量测定

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-01 DOI: 10.1109/LSENS.2026.3708788

Yiwei Shang;Dhayalan Shakthivel;Ravinder Dahiya

{"title":"Dual-Morphology ZnO Nanowire Photodetectors With Heterogeneous Readout Integration for UV Dosimetry","authors":"Yiwei Shang;Dhayalan Shakthivel;Ravinder Dahiya","doi":"10.1109/LSENS.2026.3708788","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3708788","url":null,"abstract":"Wearable ultraviolet (UV) dosimetry requires flexible photodetectors paired with robust readout electronics capable of converting photocurrent into calibrated, real-time irradiance data. This work presents two classes of flexible ZnO nanowire (NW) UV photodetectors heterogeneously interfaced with an adaptive transimpedance amplifier-based readout circuit. The first class, comprising aligned NW arrays fabricated by contact printing, produced peak photocurrents of ∼60 μA under 365 nm illumination at 40 mW/cm2. The second class, consisting of unaligned NW networks formed by solution casting, generated peak photocurrents of ∼10 nA under identical conditions, representing a four-order-of-magnitude disparity between the two architectures. Transimpedance gains of 50 and 300 MΩ were selected to accommodate each device type within a single readout platform. Through dark-baseline subtraction and multipoint piecewise-linear calibration, the presented system achieves real-time UV irradiance estimation with end-to-end measurement errors below 1% at 30–40 mW/cm2 and 5.1% at 20 mW/cm2. A rigid to flex interface implemented on a polyimide substrate demonstrates a viable integration pathway toward skin-conformal wearable UV dosimetry.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"3504504-3504504"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148626065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Characterization of a Multilayer FPC Eddy-Current Sensor for Micrometric Distance Measurement Applications Exploiting a Low-Cost Commercial Converter 基于低成本商用变换器的微距离测量用多层FPC涡流传感器的设计与表征

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-10 DOI: 10.1109/LSENS.2026.3712090

Nicola Iacono;Gianmauro Fontana;Giacomo Bianchi;Matteo Lancini

{"title":"Design and Characterization of a Multilayer FPC Eddy-Current Sensor for Micrometric Distance Measurement Applications Exploiting a Low-Cost Commercial Converter","authors":"Nicola Iacono;Gianmauro Fontana;Giacomo Bianchi;Matteo Lancini","doi":"10.1109/LSENS.2026.3712090","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3712090","url":null,"abstract":"Condition monitoring in Industry 4.0 drives the shift from bulky eddy-current sensors to compact flexible printed circuit (FPC) coils paired with inductance-to-digital converters (LDCs). This letter presents the design, modeling, and validation of a miniaturized four-layer FPC sensor utilizing an LDC1101 converter. Coil impedance models were experimentally validated via frequency response analysis. Furthermore, three acquisition methodologies—equivalent parallel resistance (<inline-formula><tex-math>$R_{mathrm{p}}$</tex-math></inline-formula>), high-resolution inductance (LHR), and a time-difference (TD) approach—were compared. While <inline-formula><tex-math>$R_{mathrm{p}}$</tex-math></inline-formula> achieved the highest accuracy [root mean square error (RMSE) <inline-formula><tex-math>$< {0.20} {mu text{m}}$</tex-math></inline-formula>] within a constrained range, LHR exhibited instability due to resonance injection locking. Ultimately, the proposed TD method emerged as the optimal edge-computing paradigm, delivering robust accuracy (RMSE <inline-formula><tex-math>$approx {0.37} {mu text{m}}$</tex-math></inline-formula>) while bypassing digital bounds and eliminating injection locking.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"2504304-2504304"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11603372","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148627861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Blood Pressure Estimation Using Fiber Bragg Grating Sensors 利用光纤光栅传感器测量血压

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-10 DOI: 10.1109/LSENS.2026.3712215

Mariaconsiglia Cuomo;Elena De Vita;Agostino Iadicicco;Stefania Campopiano

{"title":"Blood Pressure Estimation Using Fiber Bragg Grating Sensors","authors":"Mariaconsiglia Cuomo;Elena De Vita;Agostino Iadicicco;Stefania Campopiano","doi":"10.1109/LSENS.2026.3712215","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3712215","url":null,"abstract":"In this work, we propose an integrated device that combines a commercial electrocardiographic (ECG)-electrode and an innovative fiber Bragg grating (FBG) sensor within a single compact clamp, enabling the simultaneous acquisition of the ECG and the pulse wave signals. The novel proposed configuration enables the identification of fiducial points in both signals, allowing the computation of pulse transit time (PTT), which is exploited as a surrogate marker for cuffless blood pressure estimation. The use of a single compact device integrating both ECG and FBG sensing elements improves wearability by eliminating the need for separate systems for the acquisition of the two signals. A proper MATLAB-based algorithm, employing a mathematical formulation derived from PTT measurements, has been developed for blood pressure estimation. The estimated values are compared with reference measurements obtained from a commercial digital sphygmomanometer, and their agreement is quantitatively assessed using Bland–Altman analysis. The preliminary results obtained can be considered promising, with a mean absolute error within ±5 mmHg, suggesting potential compliance with American National Standards Institute/association for the advancement of medical instrumentation standards (ANSI/AAMI) standards for sphygmomanometer validation.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"6007804-6007804"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148625948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multicriteria Optimization of Cu-Modified Screen-Printed Carbon Electrodes Toward Salivary Creatinine PoC Monitoring 铜修饰的丝网印刷碳电极用于唾液肌酐PoC监测的多标准优化

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-13 DOI: 10.1109/LSENS.2026.3713010

Beatrice Francalanci;Erika Rovini;Marie Celine Lefevre;Mirko Prato;Gianni Ciofani;Filippo Cavallo

{"title":"Multicriteria Optimization of Cu-Modified Screen-Printed Carbon Electrodes Toward Salivary Creatinine PoC Monitoring","authors":"Beatrice Francalanci;Erika Rovini;Marie Celine Lefevre;Mirko Prato;Gianni Ciofani;Filippo Cavallo","doi":"10.1109/LSENS.2026.3713010","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3713010","url":null,"abstract":"Serum creatinine is routinely used in clinical practice to estimate Glomerular Filtration Rate, a key biomarker for the diagnosis, staging, and monitoring of chronic kidney disease. Recent studies have demonstrated significant correlations between serum and salivary creatinine levels, highlighting saliva as a promising noninvasive alternative biofluid. Point-of-care sensors based on salivary creatinine analysis could enable decentralized monitoring by eliminating the need for invasive sampling and laboratory-based instrumentation. In order to move towards this direction, in this work, a nonenzymatic electrochemical sensing strategy for creatinine detection was optimized and tested using a portable potentiostat. The method exploits the interaction between creatinine and Cu at the electrode surface, leading to redox processes monitored by cyclic voltammetry. Electrochemical pretreatment of the screen-printed electrodes enhanced the sensor response, while an optimal Cu electrodeposition time of 25 s was identified, providing the best response in terms of reproducibility and sensitivity. The system achieved a limit of detection of 10.8 μM, within the physiological range of salivary creatinine. Preliminary tests also demonstrated good selectivity and stability, with additional validation performed in artificial saliva.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"4502904-4502904"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148627536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Role of the Acceleration Plethysmography (APG) Signal for Vascular Aging Analysis With a Modular High-Sampling-Rate Wristband 基于模块化高采样率腕带的加速脉搏波信号在血管老化分析中的作用

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-06-29 DOI: 10.1109/LSENS.2026.3708181

Gianluca Diana;Giuseppe Longo;Rosalba Liguori;Alfredo Rubino;Francesco Scardulla;Leonardo D’Acquisto

{"title":"The Role of the Acceleration Plethysmography (APG) Signal for Vascular Aging Analysis With a Modular High-Sampling-Rate Wristband","authors":"Gianluca Diana;Giuseppe Longo;Rosalba Liguori;Alfredo Rubino;Francesco Scardulla;Leonardo D’Acquisto","doi":"10.1109/LSENS.2026.3708181","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3708181","url":null,"abstract":"This study proposes a wearable prototype with a high sampling rate capable of simultaneously acquiring photoplethysmographic (PPG) signals from both the wrist and the finger using red and green wavelengths. By integrating acceleration plethysmography (APG) indices, derived from the second derivative of the PPG signal, the proposed device paves the way for the assessment of arterial stiffness. The proposed approach is motivated by the correlation between vascular aging and the characteristic APG fiducial point indices, as well as their link to the risk of cardiovascular diseases. However, the impact of wavelength and anatomical measurement site on these indices remains largely unexplored in the existing literature. The device was tested on 22 healthy volunteers (mean age 57.8 <inline-formula><tex-math>$pm$</tex-math></inline-formula> 17.3 years) to assess the correlation between the b/a and e/a indices and chronological age, which was used as a surrogate for vascular age. The results show that the green wavelength provides stronger correlations than red at both sites, and that the finger is the most accurate measurement site (b/a: R = 0.587, p = 0.004; e/a: R = −0.512, and p = 0.015 for green light). At the wrist, only the green wavelength showed trends consistent with physiology and the literature. These preliminary results confirm the validity of the approach and open the way for the integration of APG analysis into wrist-worn devices for cardiovascular screening.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"6007604-6007604"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148627555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multisensor Data Fusion for Multiparameter Decoupling of Optical Fiber Measurements in Nuclear Reactor Environments 核反应堆环境下光纤测量多参数解耦的多传感器数据融合

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-08 DOI: 10.1109/LSENS.2026.3711674

Aabid Hassan;Siddhartha P. Duttagupta

{"title":"Multisensor Data Fusion for Multiparameter Decoupling of Optical Fiber Measurements in Nuclear Reactor Environments","authors":"Aabid Hassan;Siddhartha P. Duttagupta","doi":"10.1109/LSENS.2026.3711674","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3711674","url":null,"abstract":"Optical fiber sensors in nuclear reactors exhibit strong cross-sensitivity: measured signals encode simultaneous contributions from temperature, strain, pressure, and radiation-induced degradation. This letter presents a physics-based multiparameter decoupling framework for micro modular reactor instrumentation using a four-state vector <inline-formula><tex-math>$mathbf {x}=[T,varepsilon,P,Gamma ]^{top }$</tex-math></inline-formula>, where <inline-formula><tex-math>$Gamma !in ![0,1]$</tex-math></inline-formula> is a radiation damage state governed by generation–annealing kinetics. Raman distributed temperature sensing, all-sapphire Fabry–Perot (FP) pressure sensing, Rayleigh optical frequency domain reflectometry (OFDR), and femtosecond-written fiber Bragg grating (FBGs) are combined in a <inline-formula><tex-math>$4 times 4$</tex-math></inline-formula> sensitivity matrix. A reactor-specific sensor architecture is introduced in which radiation damage is not measured directly but estimated as the unexplained FBG shift after independently measured thermo-mechanical contributions are removed. Unlike conventional dual-FBG algebraic methods, which solve a <inline-formula><tex-math>$2 times 2$</tex-math></inline-formula> temperature–strain system and omit radiation drift and pressure, the proposed framework explicitly decouples all four physical states simultaneously. An algebraic cascade implementation achieves temperature RMSE of 0.49K and strain RMSE of <inline-formula><tex-math>$4.5,mu varepsilon$</tex-math></inline-formula> for an LBE-cooled micro modular reactor scenario, and 0.52 K/<inline-formula><tex-math>$4.7,mu varepsilon$</tex-math></inline-formula> for a pressurized water reactor (PWR) scenario. Three formally characterized failure modes motivate future physics-informed state-space estimation.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"3504304-3504304"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148626390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Testing of Different Sensor Electrode Grids for Tactile Sensing 触觉传感中不同传感器电极网格的设计与测试

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-08 DOI: 10.1109/LSENS.2026.3707945

Marut Deo Sharma;Juwesh Binong

{"title":"Design and Testing of Different Sensor Electrode Grids for Tactile Sensing","authors":"Marut Deo Sharma;Juwesh Binong","doi":"10.1109/LSENS.2026.3707945","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3707945","url":null,"abstract":"One of the most basic and easy ways to convert forces from the physical world into electrical signals is through resistive sensing. Resistive sensors are therefore the preferred option for tactile sensing in robotic grippers. In this letter, sensor electrode grids are designed for the detection of slip in the gripper while holding an object. The materials used for grid construction are silver wires, copper conductive tape, and silver-conductive fabric. They are separately arranged to form an inner and an outer electrode, creating a complete grid structure. The pressure sensor creates a conducting channel that runs through both electrodes, thus connecting the inner and outer electrode grids. The designed electrode grids are segmented into four portions, and calibrated weights are applied in steps in these portions. When an object slips from a gripper, it tends to settle into a new position of the electrode grid, which causes a sudden change in the resistance value of pressure conductive rubber. The electrode grid performance is evaluated based on changes in sensor resistance value under different loading conditions, as well as by using Comsol multiphysics. Unlike prior tactile sensors that primarily focus on uniform electrode patterns, this work introduces and experimentally validates the grid sparsity index as a design parameter to systematically compare electrode materials and geometries for slip detection.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"5504704-5504704"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148627576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanostructured TiO2 and TiS2 Based Chemiresistive Sensors for Accurate Detection of α-Terpinene 基于TiO2和TiS2的纳米结构化学电阻传感器用于α-萜烯的精确检测

IF 2.4

IEEE Sensors Letters Pub Date : 2026-08-01 Epub Date: 2026-07-14 DOI: 10.1109/LSENS.2026.3713230

Spoorti Mushannavar;Ruma Ghosh

{"title":"Nanostructured TiO2 and TiS2 Based Chemiresistive Sensors for Accurate Detection of α-Terpinene","authors":"Spoorti Mushannavar;Ruma Ghosh","doi":"10.1109/LSENS.2026.3713230","DOIUrl":"https://doi.org/10.1109/LSENS.2026.3713230","url":null,"abstract":"Development of efficient and portable sensors for volatile organic compounds (VOCs) like α-terpinene has gained importance, especially, in agriculture and environmental sensing. This study focuses on the synthesis of TiO2 nanoparticles and TiS2 nanoflakes using hydrothermal methods and utilizing them as chemiresistive sensors to detect α-terpinene. The TiO2 nanoparticles exhibited a response of ∼2.5–∼7.8 times for 1250–2155 ppm α-terpinene at 300 °C, which was found to be the optimum temperature of its operation. The TiS2 nanoflakes showed 1.02–1.12 times response at room temperature with faster response-recovery transients. Both the materials demonstrated substantial cross-sensitivity for other gases, such as carbon monoxide, nitrogen dioxide, and ammonia, establishing their absolute selectivity to be poor. However, it was observed that the simultaneous detection of gases using both sensors improved the selectivity of overall system significantly, thereby indicating the importance of multisensor-based approach of VOC detection. Both the nanomaterials were characterized using field emission scanning electron microscopy and UV-visible spectroscopy to study their morphologies and get their optical bandgaps.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"10 8","pages":"2001904-2001904"},"PeriodicalIF":2.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148626162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0