Article
Chemistry, Analytical
B. M. Babar, K. B. Pisal, S. H. Mujawar, V. L. Patil, L. D. Kadam, U. T. Pawar, P. M. Kadam, P. S. Patil
Summary: Vanadium Oxide (V2O5) nanostructures were prepared by a hydrothermal method and the effect of concentration variation on gas sensing performance was studied. The sample prepared with 0.3 M concentration showed the best response with good sensing features, making it a potential candidate for gas sensor fabrication.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Maryam Bonyani, Seyed Mojtaba Zebarjad, Kamal Janghorban, Jin-Young Kim, Hyoun Woo Kim, Sang Sub Kim
Summary: In this study, Au-decorated ZnO-PANI composite nanofibers were synthesized for NO2 gas sensing. The sensor with 25 wt.% PANI showed the best response to NO2 gas at 300 degrees C and exhibited high selectivity. The improved performance of the sensor was attributed to the role of Au, the formation of ZnO-PANI heterojunctions, and the optimal amount of PANI.
Article
Chemistry, Analytical
Wenlong Yang, Chengjiu Zhao, Bingsheng Du, Rong Wu, Xiaofang Lai, Yong He, Jikang Jian
Summary: A high-performance room temperature NO2 gas sensor based on tin selenide nanosheet arrays films has been developed, which can quickly respond to different concentrations and has high selectivity and repeatability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Materials Science, Multidisciplinary
Qiu-Yue Zheng, Meng Yang, Xin Dong, Xian-Fa Zhang, Xiao-Li Cheng, Li-Hua Huo, Zoltan Major, Ying-Ming Xu
Summary: In this study, a NO2 sensor with good sensing performance was developed using n-p heterostructure nanocomposites. The sensor showed high sensitivity to NO2 at room temperature, with low detection limit and fast recovery time.
Article
Chemistry, Analytical
Phan Hong Phuoc, Nguyen Van Hoang, Nguyen Manh Hung, Pham Tien Hung, Phung Dinh Hoat, Nguyen Van Hieu
Summary: xCuO-(1-x)Fe2O3 composite nanofibers for gas-sensing applications were investigated using on-chip electrospinning. The composite nanofibers showed improved sensor response compared to single metal oxides. The optimal composition of 0.5CuO-0.5Fe2O3 formed a complex oxide of copper ferrite (CuFe2O4) and exhibited the highest response to H2S and NO2 gases. The gas-sensing performance was attributed to the nanograin-based structure, formation of CuFe2O4 oxide, and heterojunctions in the composite nanofibers.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Paper & Wood
Zhijun Zhou, Yongbo Yao, Junfeng Zhang, Liangen Shen, Huawei Xu, Jie Liu, Baoqing Shentu
Summary: The study revealed that TEMPO-CNF/PVA suspension exhibits pseudoplastic fluidity and thixotropic behavior, with the viscosity affected by PVA concentration and interactions between cellulose fibrils and PVA molecules. The entangled network and hydrogen bond interactions play a crucial role in adjusting the viscosity of TEMPO-CNF suspensions.
Article
Chemistry, Analytical
Jinyu Huang, Dongting Jiang, Jiaxi Zhou, Jiexiong Ye, Yiling Sun, Xuejin Li, Youfu Geng, Jiaqi Wang, Yu Du, Zhengfang Qian
Summary: This study synthesized CuPc-loaded ZnO nanorods using a one-step microwave-assisted hydrothermal approach and characterized the products using various techniques. The CuPc/ZnO sensor showed excellent sensitivity and selectivity towards ammonia under light illumination, with a low detection limit of 0.8 ppm under red light.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Chengming Lou, Kai Wang, Houshan Mei, Jiayue Xie, Wei Zheng, Xianghong Liu, Jun Zhang
Summary: The study developed a simple and efficient TDD strategy for growing ZnO nanoarrays, which exhibited remarkable sensitivity and selectivity for NO2 detection, along with fast response and recovery times.
Article
Engineering, Electrical & Electronic
Xuebin Zhou, Zhihua Ying, Xingxin He, Chenhan Zhang, Xiaolong Zheng, Peng Zheng
Summary: Au/SnO2 composites with excellent performance were synthesized using a chemical precipitation method based on CNF-assisted synthesis. The 1.5 wt.% Au/SnO2 sensor exhibited a sensitivity of 53 to a low concentration of 1 ppm NO2 under UV irradiation at a wavelength of 365 nm, nearly 17 times higher than pure SnO2 synthesized by CNF. The crystal structure of the composites showed high crystallinity and nanoscale particles. Experimental data demonstrated that the CNF-assisted synthesis Au/SnO2 sensors had good selectivity, repeatability, and stability, even under varying humidity conditions.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Qinkai Feng, Xiuhuai Xie, Miao Zhang, Ningbo Liao
Summary: This study investigates the adsorption characteristics, electronic properties and diffusion properties of NO2 and other gases on Bi2S3. The results show that Bi2S3 has excellent detection performance for NO2 and exhibits even better detection capability when exposed to humidity. This work provides a theoretical foundation for the development of novel Bi2S3-based gas sensors.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Ceramics
Maryam Bonyani, Seyed Mojtaba Zebarjad, Kamal Janghorban, Jin-Young Kim, Hyoun Woo Kim, Sang Sub Kim
Summary: Composite nanofibers of ZnO-PANI were synthesized for NO2 gas sensing. The addition of different weight percentages of PANI to electrospun ZnO nanofibers was explored. The composites showed good thermal, structural, chemical, and morphological properties. The sensor with 25 wt % PANI exhibited the best response to NO2 gas at 300 degrees C, showing great potential for NO2 gas sensing.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Zhicheng Cai, Jiho Park, Doyeon Jun, Sunghoon Park
Summary: Porous TiO2 nanoparticle-embedded In2O3 nanofibers were synthesized for fabricating room temperature nitrogen dioxide gas sensors. The TiO2/In2O3 nanofibers exhibited higher response, shorter response and recovery times, better reproducibility, and improved selectivity to NO2 compared to pure In2O3 nanofibers. The enhanced NO2 sensing performance of the composite can be attributed to the formation of the TiO2/In2O3 n-n heterojunction, porous structure of the nanofibers, enhanced light absorption, and large number of O vacancies.
Article
Engineering, Electrical & Electronic
Rahul Kumar, Neeraj Goel, Ramesh Raliya, Govind Gupta, Pratim Biswas, Jun Zhang, Mahesh Kumar
Summary: Researchers decorated plasmonic Au nanoparticles on the surface of chemically vapor deposition (CVD) grown 2D MoS2 nanosheets, demonstrating bifunctional sensing behavior within a single device with higher gas sensitivity and enhanced photoresponse.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Vishakha Pareek, Santanu Chaudhury, Sanjay Singh
Summary: This study presents a hybrid 3DCNN-RBM architecture tailored for gas concentration estimation. The success of deep learning inspired the design of a deep-learning-based gas concentration estimation network. Experimental results demonstrate the effectiveness of the proposed method for estimating gas concentration in sensor array data of gas mixtures.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Fang -Yu Chiang, Po-Hsuan Hsiao, Tsung-Yen Wu, Vo Khuong Dien, Ming -Fa Lin, Chia- Yun Chen
Summary: This article investigates the spatial configurations of WOx/Si structures for favorable NO2 adsorption using density functional theory calculations. The results show that NO2 adsorption has a more negative adsorption energy and a larger charge transfer on exposed Si surfaces compared to WOx surfaces and WOx/Si interfaces. To improve the sensing performances, dense or distributed WOx nanoparticles were synthesized and incorporated on aligned Si nanowires, and the coupled heterostructures with distributed WOx features exhibit environmentally stable gas-sensing characteristics with minimal degradation in sensing response under high humidity conditions.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
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)