Article
Chemistry, Multidisciplinary
Shao-Xiong Lennon Luo, Weize Yuan, Mantian Xue, Haosheng Feng, Mate J. Bezdek, Tomas Palacios, Timothy M. Swager
Summary: Metal nanoparticles, particularly palladium nanoparticles (Pd NPs), can be effectively controlled and stabilized by iptycene-containing poly(arylene ether)s (PAEs). The PAEs not only limit the growth of Pd NPs but also facilitate the efficient transport of analytes, making them excellent sensory materials for hydrogen gas detection under ambient conditions. Strategies such as presorting SWCNTs with pentiptycene-containing poly(p-phenylene ethynylene)s (PPEs) and thermal annealing further enhance the chemiresistive performance.
Article
Engineering, Electrical & Electronic
S. P. Subin David, S. Veeralakshmi, M. Sakthi Priya, S. Nehru, S. Kalaiselvam
Summary: This study focuses on the synthesis and characterization of g-C3N4, Ag2ZrO3, and g-C3N4/Ag2ZrO3-based nanomaterials for ethanol gas sensor applications. The results show that the g-C3N4/Ag2ZrO3 nanocomposite exhibits the highest response value and excellent repeatability, quick response/recovery, and good stability for the detection of ethanol gas.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Nanoscience & Nanotechnology
Gang Li, Yuanyi Zhang, Qingfei Liang, Jinniu Zhang, Jia Liu, Yumeng Liu, Chunlan Wang, Jianzhi Gao, Hongbing Lu
Summary: In this study, Co3O4-TiO2 porous heterojunction nanosheets derived from BMOFs were constructed and used for ethanol sensing. The Co3O4-TiO2 nanosheets showed better sensing performances than TiO2 nanotablets, and the nanosheets with an optimal molar ratio of 12 mol% exhibited the highest response value and selectivity coefficient.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Qi Jin, Wei Wen, Shilie Zheng, Rui Jiang, Jin-Ming Wu
Summary: Nanostructure modulation is effective for high performance TiO2-based gas sensors. By using a wet-chemistry route to precipitate directly branched TiO2 nanowire arrays on alumina tubes, the sensors exhibit enhanced response due to the unique porous architecture and quasi-aligned nanostructure. The phase junctions between the backbone and branch of the branched TiO2 nanowire arrays help resistance modulation, leading to excellent sensor properties.
Article
Nanoscience & Nanotechnology
Radha Bhardwaj, Arnab Hazra
Summary: Diverse metal oxide semiconductors play important roles in chemical sensing applications. In this study, SrTiO3-TiO2 heterostructured nanotube arrays were successfully designed by growing different quantities of SrTiO3 on TiO2 nanotubes. The sensors exhibited selective response to ethanol, excellent response magnitude, and fast response time. Additionally, the sensors showed good stability, low detection limit, and good selectivity.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Wenbo Pi, Xi Chen, Qiuyun Fu, Zixiao Lu, Honglang Li, Zaiqi Tang, Wei Luo
Summary: Current semiconductor gas sensors often fail to operate in low-temperature and high-vacuum environments, making it challenging to detect gases in space. Herein, a core-shell structured SnO2@Ag2O composite with a high proportion of an effective interface was designed and developed into a MEMS gas sensor. The gas sensor achieved a fast response and high selectivity to H2S gas under extreme conditions, which could potentially be utilized in gas detection for deep space exploration.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
B. Bhagat, Santosh K. Gupta, D. Mandal, Abhishek A. Gor, R. Bandyopadhyay, K. Mukherjee
Summary: This study explores the use of nickel ferrite nanoparticles as sensors for detecting organic vapors. The developed NFO sensor shows excellent performance, with good selectivity towards ethanol, low response time, and excellent repeatability.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Review
Chemistry, Inorganic & Nuclear
Sanjit Manohar Majhi, Sachin T. Navale, Ali Mirzaei, Hyoun Woo Kim, Sang Sub Kim
Summary: The development of effective and efficient materials for gas detection is crucial for protecting human health and the environment. Indium oxide has attracted attention due to its gas-sensing applications, but its limited selectivity and performance under humid conditions are challenges. This review explores various strategies, such as morphology engineering and doping, to improve the gas detection performance of indium oxide-based sensors. Different composites of indium oxide have been evaluated to enhance their sensing performances. The review also provides a future outlook on the progress of indium oxide gas sensors.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Analytical
Prateek Bindra, Arnab Hazra
Summary: This study compared the sensing capabilities of three sensors based on pristine TiO2 nanotubes, Pd loaded TiO2 nanotubes, and Pt loaded TiO2 nanotubes. It was found that loading of Pd and Pt nanoparticles significantly improved the response magnitude of the sensors, and the formation of Pd/Pt-TiO2 discrete heterojunctions on the surface of TiO2 nanotubes played a key role in enhancing sensor sensitivity.
Article
Engineering, Electrical & Electronic
Shraddha Hambir, Shweta Jagtap
Summary: In this study, Ni-doped In2O3 microcubes were synthesized using hydrothermal method, and the additional structural, chemical, morphological, and optical characteristics of In2O3 and Ni-doped In2O3 were examined using various techniques. The gas sensing measurement of the synthesized material was also conducted. The results showed that the Ni-In7 sensor exhibited the highest sensor response and fastest response/recovery time to 1 ppm NO2 at 120℃, along with good stability and outstanding selectivity towards NO2.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Wei-Hua Deng, Liang He, Er-Xia Chen, Guan-E Wang, Xiao-Liang Ye, Zhi-Hua Fu, Qipu Lin, Gang Xu
Summary: This study reports three porous OSMS materials based on TCPP, whose porosity and pi-pi interactions were modulated by varying the H-bonding linkage nodes. The compound 1, which has the largest overlap between porphyrin rings and strongest face-to-face pi-pi interactions, exhibits the best performances and represents the first RT NO2 chemiresistive sensing material with low limit of detection and short recovery time.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Tianjiao Qi, Jie Sun, Xi Yang
Summary: Different amounts of Pd-doped neck-connected-ZnO (NC-ZnO) gas sensing materials were successfully synthesized by one-step hydrothermal method, and the results showed that Pd doping can improve the performance of sensors, especially NC-ZnO doped with 5wt% Pd showed the highest response to ethanol.
Article
Materials Science, Multidisciplinary
Jie Zhang, Manasi Doshi, Eric P. Fahrenthold
Summary: The study addresses uncertainties in experiments on monolayer graphene by developing an eddy current measurement method for sheet conductance and constitutive models. Through oxygen sensing experiments on large-area graphene, a systematic approach and constitutive model are developed to compare experimental results.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Physical
Shixiang Zhou, Li Yao, Hui Mei, Konstantinos G. Dassios, Laifei Cheng, Litong Zhang
Summary: Chiral-rotating gas sensing structures composed of chemiresistive-sensitized SiCuOC have been proposed to reduce thermal expansion of gas sensors at high temperatures. The structures disperse thermal stress by heat-induced torsion, maintaining dimensional stability. The synergistic sensitization effect of the substrate and surface sensing layer results in high response/recovery speed and value, with long-term detection maintained. The structures exhibit low thermal expansion coefficient, high deformation resistance, and can perform gas detection under pressure and thermal loading.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Feng Li, Ziqiang Zeng, Mingyang Wu, Leda Liu, Wenlong Li, Fobao Huang, Wei Li, He Guan, Wangchang Geng
Summary: Selective detection of noxious gases at low temperature is important in many industrial applications. In this study, SnS2/ZnS microspheres doped with 3.0 at% Sm were prepared and showed enhanced gas sensing performance, including higher response, fast response/recovery speed, low detection limit and good selectivity.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
A. Nancy Anna Anasthasiya, Roopa Kishore Kampara, P. K. Rai, B. G. Jeyaprakash
APPLIED SURFACE SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
A. Nancy Anna Anasthasiya, S. Ramya, D. Balamurugan, P. K. Rai, B. G. Jeyaprakash
BULLETIN OF MATERIALS SCIENCE
(2018)
Article
Chemistry, Physical
A. Nancy Anna Anasthasiya, S. Ramya, P. K. Rai, B. G. Jeyaprakash
CHEMICAL PHYSICS LETTERS
(2018)
Article
Chemistry, Physical
Parthasarathy Srinivasan, D. Prakalya, B. G. Jeyaprakash
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Engineering, Electrical & Electronic
Kampara Roopa Kishore, D. Balamurugan, B. G. Jeyaprakash
Summary: In this study, PVA/CdO nanofibers were successfully deposited on a glass substrate using an electrospinning method and further processed to yield one-dimensional CdO nano-grains. The calcined CdO showed enhanced response towards formaldehyde vapour at elevated temperatures. The composition, morphology, and sensing mechanism were analyzed and reported.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
T. Sonia, Anna Thomas, B. G. Jeyaprakash
Summary: In this study, tungsten oxide (WO3) nanoparticles were successfully deposited on LEDs, showing improved response towards formaldehyde vapor. The presence of pores and voids in the deposited WO3 nanoparticles played a critical role in enhancing sensing performance. The photo-assisted formaldehyde detection mechanism of WO3 under LED illumination was proposed and discussed.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Roopa Kishore Kampara, T. Sonia, D. Balamurugan, B. G. Jeyaprakash
Summary: Beads free polyvinyl alcohol (PVA)/NiO nanofibers with an average diameter of 400 nm were successfully prepared via the electrospinning method. NiO nanograins exhibited good response towards formaldehyde vapor at 350 degrees C with quick response and recovery time. The sensing mechanism of formaldehyde vapor interaction at 350 degrees C with NiO nanograins was proposed.
FRONTIERS OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Applied
Roopa Kishore Kampara, Balamurugan Deenadhayalan, Jeyaprakash Beri Gopalakrishnan
Summary: In this work, PVA-based ZnO nanofibers were successfully deposited using the electrospinning method. The resulting ZnO nanofibers had an average diameter of 514 nm and exhibited a one-dimensional structure. After calcination, ZnO nanograins with an average diameter of 32 nm were obtained, showing polycrystalline characteristics. The ZnO nanograins demonstrated good sensing properties towards ethyl acetate vapor at 350 degrees C, with rapid response and recovery times.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
T. Sonia, B. G. Jeyaprakash
Summary: ZnO nanostructures were deposited on LED to minimize light loss and achieve low power consumption for vapor detection, with XRD studies confirming polycrystalline nature and morphology analysis showing randomly oriented nanowires. Light-assisted acetone detection in mixed vapor environments was investigated, along with proposing a detection mechanism under light illuminated conditions.
Article
Engineering, Electrical & Electronic
T. Sonia, D. Balamurugan, B. G. Jeyaprakash
Summary: Zinc Oxide (ZnO) was deposited on glass substrates by spray pyrolysis method at 350°C, showing higher response and selectivity to acetone vapor. The sensor exhibited faster response and recovery towards acetone at the same operating temperature, with good surface compositional stability after continuous exposure for 10 hours.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Instruments & Instrumentation
Stalin Selvaraj, K. Sri Varshini, T. Sonia, B. G. Jeyaprakash, D. Balamurugan
Summary: A simple and low-cost non-enzymatic method for detecting Sarcosine was presented in this study, utilizing a ZnO-modified ITO working electrode with good analytical characteristics, low detection limit, fast response time, and no interference with other amino acids.
SENSING AND IMAGING
(2021)
Article
Instruments & Instrumentation
R. Pandeeswari, T. Sonia, D. Balamurugan, B. G. Jeyaprakash
Summary: In this study, nanostructured beta-Bi2O3 thin films were deposited on glass substrates using chemical spray pyrolysis technique. The thin films showed good sensing response towards dimethylamine vapour with a minimum detection limit of 0.5 ppm.
SENSING AND IMAGING
(2022)
Article
Materials Science, Ceramics
R. Pandeeswari, B. G. Jeyaprakash, Pandiyarasan Veluswamy, D. Balamurugan
Summary: Cd-doped beta-Ga2O3 thin films were successfully deposited using the spray pyrolysis technique at different concentrations. The results showed that Cd doping induced a change in the crystal structure to monoclinic with (2 0 1) orientation, and the 4% Cd-doped Ga2O3 thin films exhibited excellent sensing properties for low-level detection of ammonia at ambient temperature, including high sensitivity, fast response-recovery time, low hysteresis, and good stability.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
T. Sonia, Anna Thomas, B. G. Jeyaprakash
Summary: In this research, WO3 was deposited using the SILAR method at low temperature, showing good response to formaldehyde detection. Density functional theory studies were conducted to analyze the detection mechanism, electronic properties, and adsorption behavior of oxygen and HCHO on the WO3 surface, providing insights for the development of a sensor capable of detecting HCHO concentrations at the ppm level.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
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)