Article
Chemistry, Analytical
P. M. Desimone, F. Schipani, R. Procaccini, D. A. Mirabella, C. M. Aldao
Summary: The electrical conductance of gas sensors based on metal-oxide semi-conductors follows a power-law response with gas pressure. By observing the exponent γ for different gases, researchers can determine the possible species present at the surface and the reactions that can occur.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Environmental Sciences
Sarfraj Ahmed, Sudip K. Sinha
Summary: The development of metal oxide semiconductor materials has improved the performance of gas sensors in terms of selectivity, sensitivity, and response time. To enhance selectivity and minimize power consumption, nanoparticle-based p-type semiconductor materials are being developed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Automation & Control Systems
Hanyang Ji, Chunjin Mi, Zhenyu Yuan, Yang Liu, Hongmin Zhu, Fanli Meng
Summary: This study proposes a new method for detecting multicomponent gas based on the temperature-response relationship of the sensor. The method has low power consumption, low cost, and long-term monitoring, which can guide the future exploration of deployable sensors. The proof of concept shows accurate measurement of multicomponent gas with a mean error of 6.34% and 4.32%.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Optics
Long Wen, Zhiwei Sun, Qilin Zheng, Xianghong Nan, Zaizhu Lou, Zhong Liu, David R. S. Cumming, Baojun Li, Qin Chen
Summary: This paper presents an on-chip plasmonic-catalytic hydrogen sensing concept based on a metal-insulator-semiconductor (MIS) nanojunction, which can achieve a concentration detection limit of 1 ppm at room temperature and zero bias. The sensing signal of the device is enhanced by three orders of magnitude compared to non-plasmonic devices, with a one-order of magnitude higher response speed. The excellent performance is attributed to the hydrogen induced interfacial dipole charge layer and the associated plasmonic hot electron modulated photoelectric response.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Chemistry, Analytical
D. A. Mirabella, P. M. Desimone, M. A. Ponce, C. M. Aldao, L. F. da Silva, A. C. Catto, E. Longo
Summary: The sensitivity of gas sensors is significantly dependent on the size of SnO2 grains, potentially due to changes in oxygen vacancy density in response to variations in gas pressure. These findings help explain the relationship between film conductivity and power-law response.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Yu Guan, Xiancong Meng, Yanxu Lin, Xiaolong Zhao, Feng Zhang, Kaiyuan Zhang
Summary: The purpose of this study is to explore the variation mechanism of the response rate for the extinguishant detection technique based on the differential pressure principle. The effects of the sampling pipe, sensing structure, and operating temperature on the response rate were analyzed, and a theoretical model was established based on gas dispersion behavior. The results show that the response/recovery time is greatly influenced by these factors, and increasing the length and inner diameter of the sampling pipe can significantly increase the response/recovery time. Adjusting certain parameters of the sensing structure can have opposite effects. Moreover, increasing the operating temperature can decrease the response/recovery time to some extent.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Guanlin Tang, Sachin Navale, Pianpian Yang, Vikas Patil, Florian Stadler
Summary: This paper presents a method for modeling time-dependent responses using slightly modified Gompertz functions, with derived parameters correlating with the detection mechanism to expand analysis methods for a better understanding of gas sensing.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Hyeuk Jin Han, Gyu Rac Lee, Yujin Han, Hanhwi Jang, Eugene N. Cho, Sunho Kim, Chang Sub Kim, Soonmin Yim, Jae Won Jeong, Jong Min Kim, Seunghee Yu, Harry L. Tuller, Yeon Sik Jung
Summary: Controlled fabrication of three-dimensional metal oxide nanowire networks can greatly enhance signal stability and sensor response compared to random nanowire arrays. Systematic engineering and modeling of 3D geometries provide insights into the electrical conduction and gas-sensing response of 3D assemblies, revealing the critical importance of wire-to-wire junction points and their arrangement, to improve both performance and reliability of chemical sensors.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Muhammad Asif Ali Rehmani, Kartikay Lal, Ayesha Shaukat, Khalid Mahmood Arif
Summary: This work presents a simple method for fabricating capacitive transduction electrodes for sensing applications. The electrodes were produced on a PMMA substrate using a laser engraving machine and characterized by optical microscopy. A functional polymer porous cellulose decorated sensing layer was applied to the geometries for humidity sensing. The resulting sensors exhibited good sensing response with sensitivities ranging from 0.13 to 2.37 pF/%RH. Moreover, by changing the electrode geometry, the sensitivity of the sensors can be increased up to 5 times. The simplicity of the fabrication process and the higher sensitivity offered by the electrode designs make them suitable for various applications, such as air quality sensors and touch or tactile sensors.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Chen Li, Ke Liu, Shang Peng, Qi Feng, Dequan Jiang, Ting Wen, Hong Xiao, Binbin Yue, Yonggang Wang
Summary: We report a new material, CrSb2, which exhibits rewritable pressure and temperature dual-controlled n-p conduction type switching. The material undergoes a pressure-driven n-p conductivity transition at room temperature, accompanied by a structural transition and a semiconductor-to-metal transition. This transition is irreversible but can be reversed through annealing. The underlying mechanism is revealed through characterization and analysis of the microstructure, lattice distortion, and residual stress induced by compression.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Fanli Meng, Xi Luan, Chunjin Mi, Hanyang Ji, Hongmin Zhu, Zhenyu Yuan
Summary: Detecting precursor chemicals is of great importance for sniping drugs from the source. In this study, the semiconductor gas sensor array is used to measure precursor chemicals and interference samples under dynamic and static measurement. Qualitative and quantitative analyses are conducted using the principal component analysis, support vector machine, and K-nearest neighbor algorithms. The qualitative results show that the SVM and KNN algorithms perform well in the two measurement methods. For quantitative analysis, support vector regression is utilized, and the mean absolute error is smaller in the dynamic measurement than in the static measurement. Stability experiments conducted after a month reveal that the qualitative recognition in dynamic measurement is better than in static measurement, indicating the advantages of dynamic measurement for real-time detection of precursor chemicals.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Maciej Krawczyk, Ryszard Korbutowicz, Rafal Szukiewicz, Patrycja Suchorska-Wozniak, Maciej Kuchowicz, Helena Teterycz
Summary: In this study, a beta-Ga2O3 epitaxial layer with a highly developed surface was synthesized on gold electrodes on a Al2O3 substrate, and impregnated with gold nanoparticles to achieve p-type doping. The introduction of the Au nanoparticles led to an increase in conductivity and a reversal of the electric response to air containing DMS.
Review
Engineering, Electrical & Electronic
Hongfeng Chai, Zichen Zheng, Kewei Liu, Jinyong Xu, Kaidi Wu, Yifan Luo, Hanlin Liao, Marc Debliquy, Chao Zhang
Summary: This article reviews the research advances on the stability of metal oxide semiconductor gas sensors in the past five years, discussing the impact of structure, environment, toxicity, and sensor array on sensor stability, and summarizing the improvement schemes of existing materials and structure design.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Riya Alice B. John, A. Ruban Kumar
Summary: The toxicity rate in the air is increasing due to the release of volatile organic compounds (VOCs) from various aspects of daily life. The current research focuses on synthesizing and studying the properties of pure and Palladium-doped Nickel Oxide nanostructures for gas sensing applications. The optimized sensor shows high response and stability in detecting C3H8O2 (propanediol) at room temperature.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Electrochemistry
Pei-Te Lin, Chih-Ying Yu, Sin-Huei Ho, Shiuan-Wei Pan, Jyun-Siang Jhang, Yi-Xun Zhang, Yo-Lun Zhang, Tian-Tsz Hsieh, Hao-Chien Wang, Wen-Jeng Hsueh, Chun-Ying Huang
Summary: The photochemical activation process is a promising way to operate metal oxide gas sensors at room temperature, but currently limited to n-type semiconductors. In this study, a highly stable p-type copper gallium oxide (CuGaO2) gas sensor was fabricated through the facile sol-gel process. It can detect O-3 gas at room temperature and its gas response can be further enhanced by UV activation, achieving a highest gas response of 7.12 to 5 ppm O-3 gas at a UV intensity of 10 mW cm(-2). Additionally, the CuGaO2 sensor exhibits excellent long-term stability with only approximately 3% degradation over 90 days.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Instruments & Instrumentation
Rabeb Faleh, Sami Gomri, Mehdi Othman, Khalifa Aguir, Abdennaceur Kachouri
Article
Chemistry, Analytical
M. Othman, C. Theron, M. Bendahan, L. Caillat, C. Rivron, S. Bernardini, G. Le Chevallier, E. Chevallier, M. -P. Som, K. Aguir, T. -H. Tran-Thi
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Analytical
B. Lawson, K. Aguir, T. Fiorido, V. Martini-Laithier, R. Bouchakour, S. Burtey, Ch. Reynard-Carette, M. Bendahan
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Nanoscience & Nanotechnology
Olivier Dalstein, Maxime Tabo, Elsa Alvarez, Lucas Roux, Richard Garuz, Marcel Pasquinelli, Lhoucine Azzi, Marc Bendahan, Khalifa Aguir, Jerome Loizillon, Marco Abbarchi, David Grosso
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Yina J. Onofre, Ariadne C. Catto, Sandrine Bernardini, Tomas Fiorido, Khalifa Aguir, Elson Longo, Valmor R. Mastelaro, Luis F. da Silva, Marcio P. F. de Godoy
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Analytical
Fatima-Ezahra Annanouch, Gilles Bouchet, Pierre Perrier, Nicolas Morati, Christelle Reynard-Carette, Khalifa Aguir, Virginie Martini-Laithier, Marc Bendahan
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Physical
S. Smiy, H. Saoudi, A. Benali, M. Bejar, E. Dhahri, T. Fiorido, K. Aguir
CHEMICAL PHYSICS LETTERS
(2019)
Article
Chemistry, Physical
S. Smiy, M. Bejar, E. Dhahri, T. Fiorido, M. Bendahan, K. Aguir
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
S. Ben Nacer, A. Labidi, S. Touihri, K. Aguir
MATERIALS RESEARCH EXPRESS
(2020)
Article
Materials Science, Multidisciplinary
S. Smiy, H. Saoudi, A. Benali, M. Bejar, E. Dhahri, T. Fiorido, M. Bendahan, K. Aguir
MATERIALS RESEARCH BULLETIN
(2020)
Article
Chemistry, Analytical
R. Souissi, N. Bouguila, M. Bendahan, T. Fiorido, K. Aguir, M. Kraini, C. Vazquez-Vazquez, A. Labidi
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Materials Science, Ceramics
H. Saoudi, A. Benali, M. Bejar, E. Dhahri, T. Fiorido, K. Aguir, R. Hayn
JOURNAL OF ELECTROCERAMICS
(2020)
Article
Chemistry, Analytical
Luis F. da Silva, Ariadne C. Catto, Sandrine Bernardini, Tomas Fiorido, Joao V. N. de Palma, Waldir Avansi, Khalifa Aguir, Marc Bendahan
Summary: This study reports on a BTEX gas sensor based on hematite microrhombuses synthesized via hydrothermal method. The results demonstrate the high sensitivity and long-term stability of the hematite microrhombuses towards sub-ppm BTEX levels, indicating their potential as sensing materials for BTEX gas sensor devices.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
Waldir Avansi, Ariadne C. Catto, Luis F. da Silva, Tomas Fiorido, Sandrine Bernardini, Valmor R. Mastelaro, Khalifa Aguir, Raul Arenal
ACS APPLIED NANO MATERIALS
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Bruno Lawson, Khalifa Aguir, Zouhair Haddi, Tomas Fiorido, Rachid Bouchakour, Marc Bendahan
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)