Article
Chemistry, Physical
Jiawei Tian, Hongchuan Jiang, Xinwu Deng, Xiaohui Zhao, Jiayue Tian, Gangwei Shi, Guangxian Li, Jianfeng Zhang, Wanli Zhang
Summary: It was found that the response of PdNi nano-film hydrogen sensors increases as the film thickness decreases, with the 12 nm film showing significant advantages and a detection limit as low as 50 ppb hydrogen. Film thickness only affects crystallinity and grain size, not crystal structure.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Dionisio Del Orbe, Hyunwoo Yang, Incheol Cho, Jaeho Park, Jungrak Choi, Sang Woo Han, Inkyu Park
Summary: The thermocatalytic hydrogen gas sensor fabricated using electrodeposition of pseudo-porous networks of Pt crystals shows high sensitivity and selectivity, with low power consumption and fast response speed, making it suitable for industrial and personalized applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Sang-Hoon Kim, Kwang-Seok Yun
Summary: This paper presents a sensitive Pd gas sensor with a NiCo2O4 nanoneedle forest (NNF) for the detection of hydrogen (H2). The Pd film on NiCo2O4 NNF maximized the reactive surface area with H2, resulting in excellent sensitivity and response speed. Integrated with a temperature sensor and heater using MEMS processes, the sensor's sensitivity and response speed can be adjusted by controlling the operating temperature. The proposed sensor exhibited fast response and recovery times at both room temperature (RT) and 300°C, with linear response and high sensitivity at RT and faster response at higher temperatures. The sensor can be utilized as a low-power, high-sensitivity sensor at RT or as a fast-response sensor at elevated temperatures using an integrated heater.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
R. Souissi, N. Bouguila, M. Bendahan, K. Aguir, T. Fiorido, M. Abderrabba, I Halidou, A. Labidi
Summary: The importance of detecting ozone and its impact on human health; Gas sensors based on In2S3 films prepared have high sensitivity and low detection limits; The gas sensor at a working temperature of 160 degrees Celsius exhibits good rapidity and selectivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Yijun Yang, Bohee Maeng, Dong Geon Jung, Junyeop Lee, Yeongsam Kim, JinBeom Kwon, Hee Kyung An, Daewoong Jung
Summary: The study focuses on the performance of SnO2 thin film sensors for H-2 gas, revealing that annealed films exhibit higher response and shorter response time.
Article
Engineering, Electrical & Electronic
Kazuki Ueda, Sang-Hyo Kweon, Hirotaka Hida, Yoshiharu Mukouyama, Isaku Kanno
Summary: Transparent piezoelectric microdevices were realized by depositing Pb(Zr,Ti)O3 (PZT) thin films on fluorine-doped tin oxide (FTO)-coated glass substrates using radio frequency (RF) magnetron sputtering and sol-gel methods. The transparent PZT thin films exhibited polycrystalline perovskite structure with good piezoelectric properties, showing a clear converse piezoelectric effect with a coefficient ranging between 2.8 and 5.0 C/m2.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Physical
Jin Gong, Zhaohui Wang, Yankun Tang, Jianhai Sun, Xueyong Wei, Qunming Zhang, Geng Tian, Hairong Wang
Summary: A microelectromechanical systems (MEMS)-based resistive hydrogen sensor using a palladium-gold (Pd-Au) alloy thin film was developed. It has the advantages of low power consumption, mass production, and high performance. The sensor exhibited good response, recovery, and repeatability for hydrogen detection and showed great potential for detecting hydrogen leakage in new energy vehicles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Srijeet Tripathy, Avik Sett, Santanab Majumder, Tarun Kanti Bhattacharyya
Summary: This study investigates the effects of gate voltage on ammonia sensing properties of carbon nanotube thin film transistors (CNT TFT). The sensitivity and detection limit of the device are found to be significantly improved under the influence of a gate field. The amplification of sensor response is attributed to the increase in adsorption energy of ammonia due to the gate field, as well as the reversible increase of contact resistance induced by ammonia exposure in the negative gate regime.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Amruta B. Nagare, Namdev S. Harale, Suprimkumar D. Dhas, Umesh V. Shembade, Suhas R. Ghatage, Pramod S. Patil, Annasaheb V. Moholkar
Summary: Nanogranular polypyrrole (PPy) thin films were successfully synthesized by in-situ oxidative polymerization and drop casting method. The films exhibited agglomerated granular-like morphology with high roughness. The optimized PPy thin film gas sensor showed excellent response and stability towards NO2 gas even at low concentrations.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Necmettin Kilinc, Senem Sanduvac, Mustafa Erkovan
Summary: Platinum-nickel alloy thin films deposited on a glass substrate by sputter technique exhibit good hydrogen sensing properties, with the Pt-79-Ni-21 alloy thin film showing the best performance across all temperature ranges. The detection limit for Pt and Pt-Ni alloy thin films is below 1 ppm, and the response times decrease with increasing H-2 concentration and temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Hodaka Otsuka, Takafumi Ninoseki, Chiemi Oka, Seiichi Hata, Junpei Sakurai
Summary: In this study, a flattened diaphragm using Ru-based TFMG was successfully fabricated for size reduction of the pressure sensor. The diaphragm easily deformed even under low differential pressure, and the sensor exhibited good linearity and sensitivity.
Article
Chemistry, Analytical
Lianjie Zhou, Fumihito Kato, Nobutomo Nakamura, Yasushi Oshikane, Akira Nagakubo, Hirotsugu Ogi
Summary: This study presents a highly sensitive hydrogen-gas sensor fabricated using MEMS technology. The sensor chip consists of glass substrates, silicon substrate, and an AT-cut quartz crystal resonator with a palladium film as the hydrogen-gas sensing material. By applying an air-plasma treatment method, the sensitivity of the sensor was improved, achieving a detection limit of 10 ppm or less.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Telecommunications
Yang Jing, Cheng Yuhua, Yuan Yupeng, Li Xiaofei, Zhang Zuwei, Xu Ming, Wang Dengpan, Mu Jiangdong, Mei Yong, Zhang Yuzhe
Summary: The Non-Dispersive InfraRed (NDIR) gas sensor is widely used for gas detection, but existing products have issues like large volume, high cost, and lack of integration. This paper presents a novel fully integrated infrared gas sensor structure, optimizing the gas chamber's light structure and flow, and designing a MEMS gas chamber production process. The result is a small volume, high transmissivity gas chamber, essential for producing miniaturized NDIR gas sensors.
DIGITAL COMMUNICATIONS AND NETWORKS
(2021)
Article
Chemistry, Physical
M. Miralaei, S. Salari, P. Kameli, M. Torabi Goodarzi, M. Ranjbar
Summary: The hydrogen gas sensing properties of Co1-xZnxFe2O4 (x = 0-0.45) nanoparticles synthesized by hydrothermal process were investigated. An n->p crossover in electrical conductivity towards hydrogen gas was observed, and the related mechanisms were proposed. The sensor response deviated from the Freundlich isotherm and followed the Langmuir adsorption model at higher Zn percentage (x = 0.45). The strong correlations between gas sensing measurements and DC electric resistivity calculations provide a basis for further investigation of gas sensors. Deposition of palladium nano-structures on the sensor surface improved response time and sensitivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Analytical
Ting-Jen Hsueh, Song-Sing Wu
Summary: This study successfully produced Co3O4 nanoparticles and developed an Au/Co3O4-NPs/MEMS NO2 gas sensor with high sensitivity to NO2 gas. Experimental results showed that the sensor had the greatest response to a 100-ppb NO2 gas concentration at the optimal operating temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Ceramics
Xiaohui Zhao, Shuai Yan, Hongmin Wang, Hongchuan Jiang, Wanli Zhang
CERAMICS INTERNATIONAL
(2019)
Article
Chemistry, Analytical
Hongchuan Jiang, Xiaoyu Tian, Xinwu Deng, Xiaohui Zhao, Luying Zhang, Wanli Zhang, Jianfeng Zhang, Yifan Huang
Article
Chemistry, Analytical
Hongchuan Jiang, Yibing Yu, Luying Zhang, Jun Zhu, Xiaohui Zhao, Wanli Zhang
Article
Engineering, Electrical & Electronic
Hao Liu, Xiling Mao, Jinting Cui, Shuwen Jiang, Xiaohui Zhao, Hongchuan Jiang, Wanli Zhang
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Nanoscience & Nanotechnology
Luying Zhang, Hongchuan Jiang, Jianfeng Zhang, Yifan Huang, Jiawei Tian, Xinwu Deng, Xiaohui Zhao, Wanli Zhang
Article
Materials Science, Multidisciplinary
Xiaohui Zhao, Ruolan Wang, Yang Liu, Xinwu Deng, Hongchuan Jiang, Wanli Zhang
Article
Chemistry, Physical
Min Zhang, Guang Yang, Li Zhang, Yin Zhang, Juhang Yin, Xiaodong Ma, Jing Wen, Linglu Dai, Xin Wang, Haiyan Chen, Linbo Zhang, Liangjun Yin, Xian Jian, Xiaohui Zhao, Longjiang Deng
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Jiawei Tian, Hongchuan Jiang, Xinwu Deng, Luying Zhang, Jianfeng Zhang, Xiaohui Zhao, Wanli Zhang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Analytical
Jiawei Tian, Hongchuan Jiang, Xiaohui Zhao, Gangwei Shi, Jianfeng Zhang, Xinwu Deng, Wanli Zhang
Summary: A novel hydrogen sensor with ppb-level detection limit was fabricated using oxidized Ni foam as substrate and Pd nanoparticles as sensing material. The sensor showed high response and stability to low concentration H2, with a wide detection range (7 ppb to 2 %) and optimal operating temperature of 30 degrees C. This work provides a new strategy for the development of low detection limit hydrogen sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Lei Shao, Xiaohui Zhao, Shipeng Gu, Yaping Ma, Yang Liu, Xinwu Deng, Hongchuan Jiang, Wanli Zhang
Summary: Platinum thin-film resistance temperature detectors were successfully fabricated using magnetron sputtering and MEMS processes, demonstrating excellent stability and linearity. Compared to sensors on ceramic substrates, sensors on Hastelloy tapes exhibit lower thermal hysteresis and higher stability.
Article
Chemistry, Physical
Jiawei Tian, Hongchuan Jiang, Xinwu Deng, Xiaohui Zhao, Jiayue Tian, Gangwei Shi, Guangxian Li, Jianfeng Zhang, Wanli Zhang
Summary: It was found that the response of PdNi nano-film hydrogen sensors increases as the film thickness decreases, with the 12 nm film showing significant advantages and a detection limit as low as 50 ppb hydrogen. Film thickness only affects crystallinity and grain size, not crystal structure.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Kexin Ma, Lili Cao, Fei Luo, Haitao Zhou, Dabo Liu, Bingwei Luo, Yi Xu, Jinting Cui, Xiaohui Zhao
Summary: This study focuses on a new strategy of reducing alloys for the easy preparation and performance enhancement of thin-film thermocouples (TFTCs) through nanostructure and interface design. A platinum/iridium (Pt/Ir) TFTC with a well matched interface and few defects is fabricated, showing excellent long-term service stability over a high-temperature range. The Pt/Ir TFTCs exhibit significant potential for various applications such as thermal detection, microelectronics, and aero-engines.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Yang Liu, Hongchuan Jiang, Xiaohui Zhao, Xinwu Deng, Wanli Zhang
Summary: This paper investigates the fabrication and properties of nanocrystalline yttria-stabilized zirconia/alumina composite film on Ni-based superalloy substrate. The results show that the composite film exhibits superior insulation and adhesion properties.
APPLIED SURFACE SCIENCE
(2022)
Proceedings Paper
Engineering, Mechanical
Yuxin Zhang, Hongchuan Jiang, Xiaohui Zhao, Wanli Zhang, Yanrong Li
5TH ANNUAL INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE AND ENGINEERING (ICMSE2017)
(2018)