Article
Chemistry, Physical
Gajanan M. Hingangavkar, Sujit A. Kadam, Yuan-Ron Ma, Ramesh N. Mulik, Vikas B. Patil
Summary: Facile hydrothermal route was employed to prepare MoS2 nanoparticles (NPs) with superior specific surface area and hexagonal lattice structure. The MoS2 NPs demonstrated excellent gas sensing performance towards H2S gas, with a fast response and recovery time. It could detect as low as 1 ppm concentration of H2S gas.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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
Shen Liu, Peijing Chen, Junxian Luo, Yanping Chen, Bonan Liu, Hang Xiao, Wenqi Yan, Wei Ding, Zhiyong Bai, Jun He, Yiping Wang
Summary: Monitoring electric current is crucial for the reliable operation of power systems and electronic equipment. This study presents an optomechanical cavity-based resonator for current sensing, which shows high sensitivity, short response time, low power consumption, and a compact structure. It is expected to have applications in high precision current and magnetic field sensing.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Optics
Chengyun Hong, Saejin Oh, Vu Khac Dat, Sangyeon Pak, SeungNam Cha, Kyung-Hun Ko, Gyung-Min Choi, Tony Low, Sang-Hyun Oh, Ji-Hee Kim
Summary: Transition metal dichalcogenide (TMD) layered semiconductors have immense potential in various device applications. However, their sub-bandgap light absorption is insufficient. In this study, we modulated the sub-bandgap photoresponse of MoS2/Au heterostructures through electrode fabrication methods. By applying a sputter deposition of the Au layer, we achieved up to 60% sub-bandgap absorption in the MoS2/Au heterostructure. The enhanced absorption was attributed to the planar cavity formed by MoS2 and Au, and the absorption spectrum could be tuned by altering the thickness of the MoS2 layer. The SWIR photocurrent increased due to increased absorption, enabling broad wavelength detection. Rapid photoresponse and high responsivity were achieved at an excitation wavelength of 1550 nm. This study demonstrates a facile method for optical property modulation and SWIR photodetection in wide-bandgap 2D materials.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Younes Hanifehpour, Mehdi Abdolmaleki, Negar Moradi, A. H. S. Farhood, Somayeh Ahmadiyeh, Gholam Reza Allahgholipour, Javad Hosseini
Summary: Flower-like nanosheets of pure molybdenum disulfide and iron-doped molybdenum disulfide were successfully synthesized using the hydrothermal method. The doping of iron in the molybdenum disulfide structure led to improved electrochemical performance, with higher specific capacitance and lower charge transfer resistance. These Fe-doped MoS2 samples have the potential to be used as electrode materials for future energy storage devices.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Wei Xu, Jianwen Fei, Wei Yang, Yani Zheng, Yin Dai, Marwan Sakran, Jun Zhang, Wanying Zhu, Junli Hong, Xuemin Zhou
Summary: A novel nanocomposite Fe3O4@MoS2-Au NPs was constructed and a colorimetric/electrochemical dual-mode sensor was successfully prepared for H2O2 detection. The sensor showed a wide linear range, low detection limits, and can be used for detecting H2O2 in normal human serum, with promising application prospects.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Paolo D'Agosta, Francesco Tumino, Valeria Russo, Andrea Li Bassi, Carlo S. Casari
Summary: In this work, the growth of WS2/MoS2 and MoS2/WS2 heterobilayers by pulsed laser deposition (PLD) under ultra-high vacuum conditions was studied. The heterobilayer morphology and structure at the nanoscale were investigated using in situ scanning tunneling microscopy. The experiments showed that the growth of the heterostructure can be controlled by tuning the number of laser pulses, achieving high coverage and thickness sensitivity. Raman spectroscopy revealed the effect of the interaction with the metallic substrate on the TMD vibrational properties and a strong interlayer coupling between the MoS2 and WS2 layers. The transfer of the heterobilayers onto a silica substrate confirmed that the interlayer coupling is not substrate-dependent. This work highlights the potential of PLD technique in growing TMD heterostructures and opens new perspectives in the synthesis of complex 2D layered materials.
Article
Chemistry, Physical
Hefei Hua, Beibei Chen, Zhiheng Ji, Juan Wang
Summary: This study reports an electrochemical dopamine sensor using coaxial hierarchical-structured Au-Sv-MoS2-CNTs, which exhibits remarkable detection performance and selectivity. Density functional theory simulations demonstrate that vacancy engineering and morphology control can tune the electronic structure of the sensor and facilitate the adsorption and electrocatalytic reaction of dopamine on Au-Sv-MoS2-CNTs.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Julian Picker, Maximilian Schaal, Ziyang Gan, Marco Gruenewald, Christof Neumann, Antony George, Felix Otto, Roman Forker, Torsten Fritz, Andrey Turchanin
Summary: The exceptional electronic and photonic properties of monolayers of transition metal dichalcogenides make them promising for various applications. The growth and interaction of these materials with the substrate are crucial for their successful implementation.
NANOSCALE ADVANCES
(2023)
Article
Nanoscience & Nanotechnology
Meng Qi, Ziyang Huang, He Zheng, Ligong Zhao, Renhui Jiang, Jiaheng Wang, Jie Hu, Guoxujia Chen, Shuangfeng Jia, Jianbo Wang
Summary: We synthesized high-crystallinity and uniform few-layer MoS2 through chemical vapor deposition, and found that bilayer MoS2 exhibits the best sensitivity for detecting NO2 at room temperature compared to monolayer and trilayer counterparts. This is attributed to the more negative adsorption energy of NO2 on bilayer MoS2, which facilitates charge transfer and enhances the electrical response of gas sensors. This work provides insights into the layer-dependent gas-sensing performance and serves as a reference for designing room-temperature gas sensors with low power consumption and reliable responsivity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Peng Shao, Li-Ping Ding, Feng Ding
Summary: This study systematically explored the initial stage of MoS2 CVD growth on a gold surface through density functional theory-based molecular dynamics simulations, revealing critical steps such as MoO3 sulfidation, Au(111) surface passivation, and Mo atom lifting to form stable MoS2 nuclei. The theoretically predicted most stable T-phase small MoS2 clusters were in good agreement with previous experimental observations, indicating the importance of phase transition from T phase to H phase for highly stable H-phase MoS2 films growth. The research deepens understanding of TMD CVD growth mechanism on a gold surface and provides guidance for controllable CVD synthesis of various TMDs.
CHEMISTRY OF MATERIALS
(2021)
Article
Automation & Control Systems
Zechen Zhang, Menghua Sui, Changhe Li, Zongming Zhou, Bo Liu, Yun Chen, Zafar Said, Sujan Debnath, Shubham Sharma
Summary: By simulating the residual stress of cemented carbide during grinding, it was found that using nanofluid minimum quantity lubrication can achieve the lowest friction coefficient, proving the model's reliability under dry grinding conditions.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Construction & Building Technology
Jin Liu, Yinhong Ran, Mohammad Zarei, Ehsan Tabasi, Alireza Naseri, Mohammad Worya Khordehbinan
Summary: This study aimed to evaluate and compare the short and long-term fracture behavior of warm mix asphalt (WMA) containing vertical and angular cracks under mode I loading conditions at low and medium temperatures. Nano-MoS2 was used as an eco-friendly additive to improve the fracture behavior. The results showed that the addition of nano-MoS2 significantly enhanced the fracture resistance and fracture toughness of WMA under short-term and long-term conditions.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
HaiLiang Miao, Yang Gao, Xiao Biao, Fuzhen Xuan
Summary: In this study, a flexible LC sensor with MoS2 as the active material and a FCNN algorithm is proposed for simultaneous temperature and humidity detection. The sensor offers reduced volume, weight, and cost, and achieves high sensitivities for temperature and humidity sensing.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Tao Zhang, Yipu Liu, Jie Yu, Qitong Ye, Liang Yang, Yue Li, Hong Jin Fan
Summary: This study demonstrates the successful realization of biaxially strained MoS2 nanoshells through a self-vulcanization strategy, with precise control of the MoS2 layer number. The bilayer MoS2 nanoshells show remarkable hydrogen evolution reaction activity and negligible degradation after durability testing. Density functional theory calculations provide insights into the contribution of biaxial strain and induced sulfur vacancies to the catalytic activity.
ADVANCED MATERIALS
(2022)
