Article
Materials Science, Multidisciplinary
Mohamed A. Basyooni, Shrouk E. Zaki, Yasin Ramazan Eker
Summary: By depositing a V2O5 thin film onto a silicon surface, the properties of WS2 can be improved, resulting in increased energy states for photo-generated carriers and stronger exciton peaks. The device exhibits rapid response and desorption capabilities in a CO2 environment, and demonstrates high optoelectronic performances.
MATERIALS CHEMISTRY AND PHYSICS
(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
Materials Science, Multidisciplinary
Michal Mazur, Szymon Kielczawa, Jaroslaw Domaradzki
Summary: Gas impulse magnetron sputtering and post-process annealing were used to transform amorphous vanadium oxide thin films into nanocrystalline V2O5, leading to an increase in surface roughness and grain size, as well as a decrease in transparency. The resistivity of the films remained stable, with the best optoelectronic performance observed in the as-deposited amorphous films.
Article
Physics, Condensed Matter
Y. Vijayakumar, P. Nagaraju, T. Sreekanth, Uppula Rushidhar, P. S. Reddy
Summary: V2O5 has been synthesized using chemical spray pyrolysis technique, with studies conducted on its structural, morphological, optical, and electrical properties. It was found that an increase in precursor volume affects the crystallinity and optical band gap of the thin films. Gas sensing investigations revealed the selectivity of the film towards various volatile organic vapours.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Yuan-Chang Liang, Yu-Wei Hsu
Summary: In this study, a two-layered thin-film structure consisting of a dispersed nanoscaled Ag2O phase and SnO2 layer (SA) and a mono-composite film layer (CSA) consisting of a nanoscale Ag2O phase in the SnO2 matrix were designed and fabricated for NO2 gas sensor applications. Both SA and CSA thin films exhibited enhanced gas-sensing responses toward low-concentration NO2 gas.
NANOTECHNOLOGY REVIEWS
(2022)
Article
Chemistry, Inorganic & Nuclear
Dinesh Mani, S. Sundar Manoharan, Ganesan Sriram, G. Johnsy Arputhavalli, S. Jebasingh
Summary: Kinematically grown highly oriented hexagonal ZnO nanorods and nanograined films were fabricated on silicon substrates via pulsed laser deposition. The structural, morphological, optical properties, and gas sensing studies of ZnO nanostructured thin film were systematically investigated. The study demonstrated that ZnO nanorods exhibit a greater sensitivity response for the detection of acetaldehyde (CH3CHO) compared to ZnO nanograined films, suggesting their potential as a material for CH3CHO gas detection at room temperature.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Sriram Srinivasa Rao, Saidi Reddy Parne, P. Nagaraju, Venkata Satya Chidambara Swamy Vaddadi, Y. Vijayakumar, Damodar Reddy Edla
Summary: The effects of substrate temperature on the structural, morphological, optical properties, and gas-sensing performance of nanostructured tungsten oxide (WO3) thin films were investigated. The WO3 film prepared at a substrate temperature of 400℃ showed the best response to ammonia vapours.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Suriya Duangmanee, Yingyot Poo-arporn, Pattanaphong Janphuang, Pimchanok Leuasoongnoen, Surangrat Tonlublao, Phitsamai Kamonpha, Natawan Saengchai, Narong Chanlek, Chatree Saisombat, Pinit Kidkhunthod, Rungtiva P. Poo-arporn
Summary: In this study, a simple and facile growth method was used to fabricate vertically aligned ZnO thin films, which were then applied in methane gas sensors. The results showed a good correlation between the film structure and sensor response.
Article
Chemistry, Physical
Q. A. Drmosh, N. A. Al-Muhaish, Yousif Ahmed Al Wajih, Mir Waqas Alam, Z. H. Yamani
Summary: The impact of post-annealing treatment on tungsten oxide films was investigated, revealing that sensors prepared with annealing temperature of 700 degrees Celsius exhibit higher sensitivity and faster response and recovery times towards acetone detection.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Analytical
Victor V. Petrov, Victor V. Sysoev, Aleksandra P. Starnikova, Maria G. Volkova, Zamir Kh. Kalazhokov, Viktoriya Yu. Storozhenko, Soslan A. Khubezhov, Ekaterina M. Bayan
Summary: A thin nanocomposite film composed of ZnO and SnO2 was successfully synthesized through a new solid-phase low-temperature pyrolysis method at concentrations of 0.5-5 mol.%. The film was found to have a poly-nanocrystal structure of ZnO and SnO2 crystals with characteristic grain sizes in the range of 10-15 nm. Furthermore, when comparing the chemiresistive response of the films with varied tin dioxide content, it was observed that the sample with an Sn:Zn optimal ratio of 1:99 showed a 1.5-fold improvement in response to 5-50 ppm NO2 exposure.
Article
Physics, Multidisciplinary
Seyyedeh Parisa Abedi, Mohammad Bagher Rahmani, Farkhondeh Rezaii
Summary: In this research, alpha-Fe2O3 (hematite) thin films were deposited on glass substrates at various growth temperatures. The morphological, structural, and optical properties of the samples were characterized. The sensing characteristics of the samples for ethanol were investigated and the growth conditions and sensing parameters of hematite thin films were optimized for ethanol sensing applications.
Article
Chemistry, Multidisciplinary
Bahram Hosseini Monjezi, Salih Okur, Rene Limbach, Abhinav Chandresh, Kaushik Sen, Tawheed Hashem, Matthias Schwotzer, Lothar Wondraczek, Christof Woell, Alexander Knebel
Summary: The fabrication of metal-organic framework (MOF) thin films is essential for integrating these materials into electronic and optical devices. However, the limited structural variety of MOF thin films prepared through layer-by-layer deposition has been a challenge. In this study, a fast method for the preparation of MIL SURMOF on Au-surfaces was developed, allowing for the deposition of adjustable thickness thin films within 60 minutes. The resulting MIL-68(In) thin films showed high optical quality and mechanical properties, making them suitable for use as optical read-out sensors.
Article
Nanoscience & Nanotechnology
Prashant Bisht, Arvind Kumar, Abhishek Ghosh, Per Erik Vullum, Martin Fleissner Sunding, Branson D. Belle, Bodh Raj Mehta
Summary: In this study, WS2 thin films with controllable growth orientation were synthesized using pulsed laser deposition. The effect of growth parameters on the formation and properties of the films was investigated. The study found significant differences in the growth mechanisms, gas sensing parameters, and underlying mechanisms between vertically and horizontally grown films.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Inorganic & Nuclear
Vandna Chaudhary, Satya Pal Nehra
Summary: A 3-dimensional ordered cubic mesoporous Ag-V2O5 loaded graphitic carbon nitride hybrid was fabricated using mesoporous silica as the template, showing temperature reliant response towards common VOCs and potential for commercial real-time sensing applications. Reported sensing response values and average response/recovery times demonstrate the effectiveness of the prepared sensor in detecting xylene gas and other volatile organic compounds commonly found in indoor environments.
DALTON TRANSACTIONS
(2021)
Article
Nanoscience & Nanotechnology
Ramarajan Ramanathan, Selvakumar Nagarajan, Venkataramana Bonu, Priyanka Patel, Shubhangi Jamdar, Harish C. Barshilia, Ramesh Chandra Mallik
Summary: Thin film technology offers possibilities and advancements in gas sensor devices. Sb-doped nanometer thin-SnO2 films were developed for CO/NH3 gas detection. The structural, surface, optical, and resistivity properties were investigated as a function of film thickness. ATO thin films showed enhanced response towards CO/NH3 gas detection with better stability and selectivity for CO gas. The results indicate the potential application of nanometer ATO films for enhanced gas detection.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Y. F. Xiang, Ruolan Mei, Lingzhi Zhao, Francischi chung Ling, Guoguang Lu, Shichen Su
Summary: This study investigated the residual stress induced by double-sided laser shot peening (DSLSP) on thin-section alloy blades through experiments and simulations. The effects of key parameters on the residual stress distribution were analyzed and the mechanism of two DSLSP modes was revealed.
JOURNAL OF LASER APPLICATIONS
(2022)
Article
Physics, Applied
Lok-Ping Ho, Muhammad Younas, Jon Borgersen, Rao Tahir Ali Khan, Seyed Javad Rezvani, Simone Pollastri, Muhammad Javed Akhtar, Muhammad Nadeem, Dong Huang, Ying-Li Shi, Andrej Kuznetsov, Francis Chi-Chung Ling
Summary: Discovering multifunctional materials is crucial for advancing science and technology. This study reports on an optical phenomenon in the metal-ZnO:Cu junction, where the light emission intensity from photoluminescence can be reversibly tuned by applying electric bias. X-ray absorption measurements revealed changes in the oxidation state of Cu+/Cu2+ and modulation of the Zn-O bond fingerprints, providing insights into the modulation phenomena.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Ying-Li Shi, Dong Huang, Ulrich Kentsch, Sheng-Qiang Zhou, Francis Chi-Chung Ling
Summary: This study achieved high permittivity and low dielectric loss in Ga ion-implanted Cu-doped ZnO films through optimized doping concentrations and annealing processes. The high permittivity film exhibited good stability and worked effectively across a wide frequency range. The enhancement of permittivity was attributed to the correlated potential barrier hopping of electrons between defect states created by co-doping.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zilan Wang, Zhigang Wang, Francis C. C. Ling, Zhicheng Su
Summary: The emission of ZnO thin films is enhanced by Ar and H-2 plasma treatments, and an extraordinary recombination mechanism is discovered.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Ceramics
Fahad Azad, Caiqin Luo, Waqar Azeem, Xing-Zhong Cao, Andrej Kuznetsov, Kaimin Shih, Changzhong Liao, Francis Chi-Chung Ling
Summary: Er-doped ZnO films with preferential orientated wurtzite structure were fabricated by PLD, and the effects of Er composition, oxygen pressure, and annealing on the films' properties were investigated. The results revealed that Er-doped ZnO films with high transparency and appropriate conductivity can be used as transparent conducting electrode materials.
CERAMICS INTERNATIONAL
(2023)
Article
Plant Sciences
Kai Cheng, Cangbao Lei, Siyuan Zhang, Qiao Zheng, Chunyan Wei, Weiyi Huang, Minghui Xing, Junli Zhang, Xiangyu Zhang, Xiao Zhang
Summary: In this study, the authors identified and analyzed the PRC2 core components in cotton, particularly upland cotton. They investigated their classifications, phylogenetic relationships, gene structures, domain organizations, subcellular localizations, protein interactions, tissue-specific expression patterns, and stress responsiveness. These findings provide insights into the evolution and composition of cotton PRC2 and lay the foundation for further research on their biological functions and regulatory mechanisms.
Article
Engineering, Environmental
Lijiao Quan, Qili Su, Haojun Wu, Weiyi Huang, Mingzhu Liu, Yong Lu, Zhe Li, Haijing Liu, Lidan Xing, Weishan Li
Summary: By employing a non-flammable GBL-based gel polymer electrolyte, an all-climate high-power LiMn2O4 + LiMn0.7Fe0.3PO4/graphite pouch cell is achieved. The interphacial instability of GBL/graphite is solved by introducing three synergistic film-forming additives. The developed non-flammable GBL-based gel polymer electrolyte enables the application of all-climate high-power LIBs with excellent performance in various temperatures.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Physics, Applied
Alexander Azarov, Augustinas Galeckas, Francis Chi-Chung Ling, Andrej Kuznetsov
Summary: Ion implantation is an effective method for introducing defects into semiconductors. In this study, we investigated the use of crystallographically aligned implants to control the balance between optically active defects in ZnO. Optical data and structural analysis confirmed the formation of different dominant crystalline defects in samples implanted along and off the [0001] direction. The proportions of extended and point defects in the initial as-implanted states of these samples were found to significantly influence the defect-related luminescence upon annealing. We conclude that channeling implants have value in functionalizing defects in semiconductors by tuning specific spectral contents in defect-related emission bands.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Applied
Die Dong, Rimei Chen, Jihong Jia, Chao Zhao, Zhiping Chen, Qin Lu, Yupei Sun, Weiyi Huang, Chunfang Wang, Yao Li, Hui He
Summary: The main reasons for difficult wound healing after bladder tumour resection are the rapid loss of drugs and weak curative effects due to cyclical urination. A bioinspired cellulose nanofibre (CNF)-based magnetic 3D nanonetwork wound dressing with excellent tissue adhesion and biocompatibility is designed to address this issue. The dressing can form a sticky 3D nanonetwork at the wound site and release drugs through an external magnetic field, promoting wound healing through photothermal, photodynamic, and chemotherapy effects.
CARBOHYDRATE POLYMERS
(2023)
Article
Engineering, Electrical & Electronic
Weiyi Huang, Yun Zhang, Fei Gao, Yu Tang
Summary: This paper proposes a design scheme of double-sandwich magnetic coupling structure with a low cross-coupling coefficient, which integrates the resonant inductors into the power transmitter and receiver, and it is designed taking the magnetic leakage and loss as constraints. A 500W prototype is built, and the comparison of experimental efficiencies between the double-sandwich and the separate magnetic coupling structures is performed. Finally, the effectiveness of the integrated design scheme is validated.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Chemistry, Physical
Fatima Matar, Ying-Li Shi, Francis Chi-Chung Ling, Amar Salih, Curtis P. Irvine, Sujeewa De Silva, Matthew R. Phillips, Cuong Ton-That
Summary: This study fabricates monoclinic phase (BixGa1-x)2O3 ternary alloys on c-plane sapphire via magnetron co-sputtering and investigates their electrical properties. It is found that alloying Ga2O3 with Bi2O3 decreases the bandgap and lowers the self-trapping energy for holes. The conductivity of (Bi0.04Ga0.96)2O3 film is lower than that of undoped Ga2O3, likely due to the compensation of shallow donors by acceptors activated by Bi2O3-induced upward shift of the valence band edge.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Lok-Ping Ho, Si-hua Li, Tianxiang Lin, Jack Cheung, Tony Chau, Francis Chi-Chung Ling
Summary: By analyzing and studying commercial PN junction barrier Schottky diodes, it was found that they exhibit a defect emission of 2.62 eV, and there is a correlation between the leakage current, the integral cathodoluminescence (CL) intensity, and the Al-implantation process. The research suggests that it is feasible to screen SiC diodes with large leakage current by inspecting the CL intensity.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Rui Zhu, Huili Liang, Shangfeng Liu, Ye Yuan, Xinqiang Wang, Francis Chi-Chung Ling, Andrej Kuznetsov, Guangyu Zhang, Zengxia Mei
Summary: In this study, a new optoelectronic memory based on a photosensitive dielectric (PSD) architecture was proposed. Data writing and erasing were achieved by optical pulse, reducing the programming voltage and optical power density. This discovery provides a brand new direction for low energy consumption non-volatile optoelectronic memories.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Kun Cao, Guanyi Gong, Xiangyang Guo, Yanling He, Francis Chi Chung Ling, Wanyin Ge, Alan Man Ching Ng, Yongxiang Li, Jerry Yu
Summary: High precision nanorod based surface morphologies can simulate the function of sensory hairs with nanotechnology. The unique gas sensitive I-V characteristics of these surfaces require initialisation under voltage bias and temperature elevation to exploit their band structures and achieve optimal gas response. Optimising nanorod based sensors with effective approaches can provide efficient control to downsize and miniaturise current gas sensors. By using ultraviolet photoelectron spectroscopy (UPS), specific band structure parameters can be extracted to determine the optimal sensor initialisation bias. The results validate the correlation between the fabricated nanostructured Schottky barrier heights obtained from UPS data and their I-V data, and also demonstrate the experimental validity of the proposed band structure. The optimal biasing condition of 0.8 V is determined for Au-ZnO nanorod hydrogen gas sensory operation at 150 degrees C, and the gas response data exhibit exponential dependence with gas concentration, which is highly relevant for programmable trigger response controlled sensing function based applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yun-Peng Zhao, Zhi-Hong Zhang, Shan-Shan Yan, Bao-Shi Qiao, Zhen-Dong Lian, Zhi-Peng Wei, Francis Chi-Chung Ling, Hong-Yu Chen, Shi-Chen Su, Kar Wei Ng, Shuang-Peng Wang
Summary: Recently, a MAPbBr(3)/MAPbCl(3) bulk heterostructure was constructed by splicing a MAPbBr(3) and a MAPbCl(3) single crystal. This heterostructure photodetector demonstrated dual-band optical detection capabilities, with fast switching time and high responsivities at different wavelengths. The ability to extract photo-carriers separately from crystals with different band gaps provides a potential solution for dual-wavelength light communications in the future.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
