Article
Chemistry, Multidisciplinary
Nai-Yuan Xu, Parvaneh Delir Kheirollahi Nezhad
Summary: This study found that pristine ZnON cannot sense CB gas, but the sensitivity of ZnON can be significantly increased by decorating the surface with Pt atoms. The calculated sensing response of Pt@ZnON is in good agreement with the experimental value, paving the way for the development of CB sensors.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Physical
Wei Liu, Zaiping Chen, Xiaohui Si, Haifeng Tong, Junmeng Guo, Zhiheng Zhang, Jiahang Huo, Gang Cheng, Zuliang Du
Summary: Low temperature and high sensitivity are important for gas sensors, but they are usually contradictory. In this study, ZnO porous nanowires doped with Pt nanoparticles were prepared and their gas-sensing performance for acetone was investigated. The results showed that the Pt-ZnO PNWs exhibited improved response and lower detection limit compared to pristine ZnO PNWs, making them a potential breath analyzer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Chenyu Wang, Jiayue Xie, Xiao Chang, Wei Zheng, Jun Zhang, Xianghong Liu
Summary: In this study, the sensitization of Pt catalyst was investigated on ZnO single nanowire sensors by both atomic layer deposition and solution method. The size of Pt increased from single atom to an average of 11.86 nm with increasing ALD cycles, resulting in a decrease in sensor resistance. The nanowire sensor with a medium Pt loading of 0.61 at% and a size of 3.95 nm showed the best response of 7.01 to 20 ppm NO2, with a 5-fold enhancement compared to pristine ZnO. These findings highlight the crucial effect of Pt size in chemical sensors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Lingyue Liu, Chengliang Mao, Heyun Fu, Xiaolei Qu, Shourong Zheng
Summary: In this study, a ZnO nanorod anchored with a single-atom Pt catalyst (Pt1/ZnO) was developed as a gas sensor for detecting triethylamine (TEA). The Pt1/ZnO sensor exhibited high selectivity and response to TEA gas, with a response value 92 times higher than pure ZnO. The enhanced sensing performance was attributed to the activation of adsorbed oxygen on Pt1/ZnO and the effective adsorption and activation of TEA by Pt single atoms. This work highlights the crucial role of Pt single-atom in improving the sensing performance and opens up possibilities for advanced gas sensors.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemical Research Methods
Li Zhang, Ming Yin, Jingxuan Qiu, Tianyi Qiu, Yan Chen, Shuyan Qi, Xiuxia Wei, Xinxin Tian, Dongpo Xu
Summary: Mesoporous ZnO nanosheets were successfully synthesized using polystyrene-polyacrylic acid as the template and characterized by SEM, TEM, XRD, and XPS. The resulted nanosheets showed flower-like appearance with large specific surface area. The gas sensitivity test demonstrated good sensing performance of the ZnO gas sensor towards triethylamine.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Jyothis George, M. Aiswarya, V. K. Mythri, Suhasini Sathiyamoorthy, S. Paulraj, V. Kathirvel, Malik Maaza, Abhijit Majumdar, Pandiyarasan Veluswamy
Summary: This study demonstrates the growth of 3D ZnO nanosheets on carbon fabric and the formation of porous structures using a solvothermal approach. The fabricated fabrics exhibit high Ultraviolet protection factor (UPF) and thermopower, with the porosity of the ZnO nanostructure playing a significant role. Additionally, the hydrophobic nature of the samples is confirmed by water contact angle study.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Zhenxing Yuan, Zhenyu Feng, Lingshuai Kong, Jinhua Zhan, Xicheng Ma
Summary: The study focuses on the synthesis of Pt-doped ZnO nanoplates for highly sensitive and selective detection of acetone. The results showed enhanced gas sensing performance of the hybrid materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Shaobo Xi, Jie Zhang, Kui Xie
Summary: The interfacial system of single-crystalline MoO3 and Pt clusters can effectively activate H2O, achieving efficient catalysis for low-temperature water-gas shift reaction. The single-crystalline features in the porous structure enable outstanding performance and long-term stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Yu Wang, Chun Du, Zhang Liu, Yanfei Liu, Bin Shan, Limin Guo, Rong Chen
Summary: We designed and fabricated a novel subnanometer Ru-coating Pt/Al2O3 catalyst (named RuPt-ALD) via atomic layer deposition (ALD), which showed excellent capability of tuning catalysts' structure-property relationship for chlorobenzene (CB) oxidation. RuPt-ALD exhibited optimal activity and selectivity, with a stable CB conversion of similar to 98% for 600 minutes at 200°C in humid air, surpassing bare Ru or Pt samples. Experimental verification and theoretical calculation identified that the lower barriers of CB adsorption and O-2 dissociation on RuPt-ALD contributed to its stronger CB adsorption and appropriate oxygen activation capacity, which were the core factors for the excellent performance under humid feed.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Electrical & Electronic
Lewen Nie, Xingwu Guo, Chenjing Gao, Xuan Wu, Juan Chen, Liming Peng
Summary: This study examines the influence of ZnO content on the optical H-2 sensing properties of porous Pt/(WO3)(1-x)(ZnO)(x) films. The findings suggest that increasing ZnO content leads to a more ordered porous structure, shorter response time, and improved transparency.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Analytical
Chunyan Li, Pil Gyu Choi, Kyusung Kim, Yoshitake Masuda
Summary: This paper discusses the direct fabrication of ultrathin Ni(OH)2 nanosheets on substrates via a solvothermal process. The thickness and morphology of the nanosheets can be controlled by manipulating the ethanol content in the solvent. The 75% ethanol-based NiO gas sensor demonstrates ultrahigh acetone sensitivity, ultralow detection limit, good stability, and superior acetone selectivity. Low cost NiO nanosheets fabricated via a simple process could be considered as potential candidates for commercial acetone sensing applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Yuanjie Chen, Shaoyun Huang, Dong Pan, Jianhong Xue, Li Zhang, Jianhua Zhao, H. Q. Xu
Summary: A dual-gate InSb nanosheet field-effect device is used to investigate the controllability of spin-orbit interaction in InSb nanosheet, demonstrating efficient tuning of the interaction. The presence of intrinsic spin-orbit interaction in InSb nanosheet is identified at zero dual-gate voltage, with its physical origin attributed to built-in asymmetry in the device layer structure.
NPJ 2D MATERIALS AND APPLICATIONS
(2021)
Article
Nanoscience & Nanotechnology
G. Milano, L. D'Ortenzi, K. Bejtka, B. Ciubini, S. Porro, L. Boarino, C. Ricciardi
Summary: This work investigates the metal-insulator transition and electronic transport properties of ZnO nanowires synthesized by Chemical Vapor Deposition. It reveals a thermally activated conduction mechanism with two channels and the tunability of the electrical properties from semiconductor to metallic-like behavior with temperature. The unique electronic transport properties are influenced by native defects, Coulomb interactions, and surface states affected by adsorbed species.
Article
Nanoscience & Nanotechnology
Valentina Paolucci, Jessica De Santis, Vittorio Ricci, Luca Lozzi, Carlo Cantalini
Summary: A simple protection strategy by stimulating the formation of a self-assembled oxide is reported, which effectively protects the underlying surface of TMDs/MCs and exhibits excellent gas sensing response.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
Jingjing Liu, Liuyang Zhang, Jiajie Fan, Bicheng Zhu, Jiaguo Yu
Summary: Unique nanosized-Pt-decorated hierarchical ZnO microspheres were prepared, showing excellent TEA gas sensing performance with a response value of 242, a working temperature as low as 200 degrees Celsius, and good selectivity and long-term stability. The synergistic effect between Pt and ZnO, as well as the electron-sinker effect of Pt, are the reasons for its superior performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
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
Automation & Control Systems
Wenbo Qin, Zhenyu Yuan, Yanbai Shen, Fanli Meng
Summary: Alcohol detection is crucial for the health of chemical and food production personnel. In this study, macroporous perovskite-type LaFeO3 (LFO) microspheres were prepared by a simple method and found to exhibit high sensitivity and selectivity towards alcohols, particularly methanol. The macroporous characteristics of LFO facilitated the diffusion of methanol molecules and improved the gas sensing performance. Furthermore, analysis based on first principles revealed the adsorption characteristics and electron exchange processes of eight gases on the material surface.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Hongmin Zhu, Zhenyu Yuan, Yanbai Shen, Hongliang Gao, Fanli Meng
Summary: In this study, the electron polar transport properties of two-dimensional heterojunction material were discovered and utilized to greatly improve the selectivity of butanone sensors. By synthesizing ultra-thin porous ZnO nanosheets modified with SnO2/NiO heterogenous particles, a detection limit of 20 ppb for butanone was achieved with a response of 328 to 100 ppm butanone, the lowest known detection limit. The synergistic catalytic effect of SnO2/NiO heterogenous particles was revealed to contribute to the high response and low detection limit of butanone. The possible mechanism for the generation of electron polar transport phenomenon in two-dimensional heterojunction material was analyzed. This work provides a novel perspective for achieving both selectivity and detection limits in gas sensors, with universal applicability and application potential.
Article
Chemistry, Analytical
Liyun Qin, Hongliang Gao, Fanli Meng
Summary: In order to accurately detect xylene, NiTiO3 nanoparticles were synthesized by the hydrothermal method and used to modify NiO to prepare NiTiO3-modified NiO nanosheet material. The microstructure and internal composition of the material were observed and analyzed by various characterization methods. The response level of the NiTiO3-NiO sensor to 100 ppm xylene gas was 20 times higher than that of a pure nickel oxide sensor, indicating a significant improvement in sensitivity. The sensor exhibited a response level of 21 in a 100 ppm xylene gas environment, with a minimum detection limit of 1 ppm and a recovery time of 135.75 s. NiTiO3, a perovskite-structured material, possesses numerous active sites and good catalytic properties for promoting redox reactions.
Article
Chemistry, Analytical
Hua Zhang, Yinghao Guo, Hongliang Gao, Fanli Meng
Summary: Ag-decorated In2O3 nanocomposites were prepared using a hydrothermal method to improve the sensing performance of In2O3 nanocubes. Characterization techniques including SEM, TEM, HRTEM, XRD, EDS, and XPS were used to observe the morphology, microstructure, crystalline phase, and element distribution in the nanomaterials. Gas sensing tests demonstrated that the prepared compounds exhibited a high response (242) to 100 ppm of 2-butanone, four times higher than pure In2O3 material, at the optimum working temperature of 240 degrees C. The Ag@In2O3-based sensor also showed excellent selectivity, repeatability, and long-term stability.
Article
Materials Science, Multidisciplinary
Tian-Yao Qi, Zhen-Yu Yuan, Fan-Li Meng
Summary: This study achieved trace determination of PAA at ultra-low concentrations using hydrogen bond adsorption and electrochemical catalysis. The modified electrode had a wide response range and low detection limit for PAA, providing a feasible scheme for the detection of other drugs and aromatic precursor chemicals.
Article
Chemistry, Multidisciplinary
Hua Zhang, Wenjie Zhao, Fanli Meng
Summary: This study prepared cobalt-modified zinc oxide nanosheets using ZIF-67 as a cobalt source, and found that the sensor ZC2 exhibited high sensitivity and low detection limit to 2-butanone. It showed a strong response (2540) to 100 ppm 2-butanone at 270°C, which was 21 times higher than pure ZnO materials. The detection limit was also optimized to 24 ppb. The sensor (ZC2) demonstrated excellent selectivity, repeatability, and stability over 30 days. The synergistic and catalytic effects of p-n heterojunction were identified as the key factors for optimizing the performance of 2-butanone sensors.
Article
Chemistry, Physical
Hongmin Zhu, Hanyang Ji, Zhenyu Yuan, Yanbai Shen, Hongliang Gao, Fanli Meng
Summary: The Wolkenstein model has been the main mechanism for semiconductor sensing of oxygen adsorption and desorption since it was proposed in the 1990s. However, metal oxide-based sensors targeting ammonia face difficulty in achieving sub-ppm detection limits, high selectivity, high response, and room temperature operation under the oxygen adsorption desorption mechanism. To address this, a CO2-catalyzed intermediate adsorption-based sensing mechanism was proposed, utilizing CO2 instead of oxygen to achieve adsorption-desorption equilibrium. C-SnO2 plays a reductive role in the response process, resulting in high selectivity, anti-interference, and low detection limits for ammonia gas at room temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Electrical & Electronic
Hua Zhang, Haoting Zhang, Zhenyu Yuan, Yudong Li, Fanli Meng
Summary: This article designs an Ag-doped Zn2SnO4 gas sensor to detect the ultralow concentration of triethylamine (TEA) by utilizing the catalytic activation effect of precious metal silver and the unique physical and chemical properties of ternary metal oxides. The gas sensor based on 3 at% Ag-doped Zn2SnO4 shows the best gas sensing performance for TEA, with a response of 273.33 to 100-ppm TEA at 250 degrees C and a minimum detectable concentration level of 100 ppb. The material also demonstrates fast response time, good stability, and high selectivity.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Zhenyu Yuan, Haoting Zhang, Jingfeng Li, Fanli Meng, Zhiqiang Yang, Hua Zhang
Summary: In this article, ZnO-In2O3 sensors modified with noble metal Ag were designed for rapid detection of hydrogen at low temperatures. The Ag NPs-loaded ZnO-In2O3 sensor showed a response of 103.75 to 100 ppm H2 at 160 ? with response/recovery times of 1.6 and 47.8 s, respectively, and a lowest detectable gas concentration of 2 ppm. The sensor also exhibited favorable repeatability, stability, and excellent selectivity.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Analytical
Mengran Ran, Zhenyu Yuan, Hongmin Zhu, Hongliang Gao, Fanli Meng
Summary: This study reports a novel Ni(OH)(2)/Co3O4 heterostructured nanomaterial with excellent performance in xylene gas detection. The material exhibits a lower optimal operating temperature, higher response, and lower detection limit compared to other gases. The outstanding performance is attributed to the p-n heterojunction between Ni(OH)(2) and Co3O4. This research provides a strategy for designing high-performance xylene gas sensors using two-dimensional Ni(OH)(2) materials.
Article
Engineering, Environmental
Yang Liu, Hanyang Ji, Zhenyu Yuan, Yanbai Shen, Hongliang Gao, Fanli Meng
Summary: Defect engineering is an effective method to regulate the properties of functional materials. This study proposes a strategy to control the content of Co2+ and oxygen vacancies in Co3O4 by calcination of Co layered double hydroxides. The results show that by modulating Co2+ and oxygen vacancies, the sensitivity of the material can be enhanced, providing a new idea for increasing active sites.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Zhijia Liao, Zhenyu Yuan, Yao Yu, Renze Zhang, Hongmin Zhu, Hongliang Gao, Fanli Meng
Summary: This study successfully synthesized a composite material of two-dimensional tin sulfide and graphene using a simple method, and comprehensively characterized and analyzed the material. The composite material showed the best performance at room temperature, reducing the operating temperature and resistance value of the sensor. This study contributes to the progress of ammonia detection technology.
IEEE TRANSACTIONS ON NANOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Fangling Zhou, Zhuangzhuang Mu, Zhenyu Yuan, Hongmin Zhu, Xin Yan, Hongliang Gao, Fanli Meng
Summary: Porous Ag-doped ZnSnO3 nanocubes synthesized through noble metal-doping method show excellent gas sensing performances for isopropanol, with outstanding response value, low detection limit, and excellent repeatability and long-term stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Electrical & Electronic
Hao Wang, Yong Zhao, Zhenyu Yuan, Hanyang Ji, Fanli Meng
Summary: A method combining variational mode decomposition and adversarial neural network is proposed to analyze PMGs, effectively addressing the limitations and issues of current intelligent methods in component analysis. Experimental results demonstrate that the proposed method performs better than current state-of-the-art methods in component recognition and concentration quantification.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
