نتایج جستجو برای: تک لایه mos2

تعداد نتایج: 49141  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده علوم پایه 1393

در این پایان نامه ترابرد الکترونی ونحوه ایجاد گاف نواری انرژی در باریکه ای از گرافین تک لایه را در حضور پتانسیل متناوب اعمالی بررسی و مطالعه میکنیم. در ساختار شبکه لانه زنبوری گرافین درجه آزادی اضافه ای بنام شبه اسپین وجود دارد که برای تشریح محل قرار گرفتن اوربیتالهای توابع موج در شش گوشه ساختار لانه زنبوری مطرح شده است. گرافین در حالت نرمال یک نیمرسانای بدون گاف محسوب میشود. حضور پتانسیل متنا...

2016
V. An E. Anisimov V. Druzyanova N. Burtsev I. Shulepov M. Khaskelberg

Tribological behavior of Cu-MoS2 and Ag-MoS2 nanocomposite lubricant was studied. Cu nanoparticles produced by electrical explosion of copper wires and Ag nanoparticles prepared by electrospark erosion were employed as metal cladding modifiers of MoS2 nanolamellar particles. The tribological tests showed Cu-MoS2 and Ag-MoS2 nanocomposite lubricants changed the friction coefficient of the initia...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

density functional theory calculations were performed to investigate the interactions of nh3 molecules with tio2/mos2 nanocomposites in order to completely exploit the adsorption properties of these nanocomposites. given the need to further comprehend the behavior of the nh3 molecules oriented between the tio2 nanoparticle and mos2 monolayer, we have geometrically optimized the complex systems ...

2015
Youwei Zhang Hui Li Lu Wang Haomin Wang Xiaomin Xie Shi-Li Zhang Ran Liu Zhi-Jun Qiu

As a finite-energy-bandgap alternative to graphene, semiconducting molybdenum disulfide (MoS2) has recently attracted extensive interest for energy and sensor applications. In particular for broad-spectral photodetectors, multilayer MoS2 is more appealing than its monolayer counterpart. However, little is understood regarding the physics underlying the photoresponse of multilayer MoS2. Here, we...

2016
Di Wu Han Huang Xupeng Zhu Yanwei He Qiliang Xie Xiaoliu Chen Xiaoming Zheng Huigao Duan Yongli Gao

Molybdenum disulfide (MoS2) has recently attracted considerable interests due to its unique properties and potential applications. Chemical vapor deposition (CVD) method is used widely to grow large-area and high-quality MoS2 single crystals. Here, we report our investigation on thermal strain-fractured (SF) single crystalline MoS2, oxidation-fractured MoS2, and normal MoS2 by atomic force micr...

2014
Manas Mandal Debasis Ghosh

A simple and cost effective hydrothermal method has been done for the synthesis of MoS2 and MoS2/rGO nanocomposites. The prepared MoS2/rGO composite was characterized by XRD, FESEM and TEM which revealed the formation and as well as the morphological scenario of MoS2/rGO nanocomposite. Pure MoS2 and MoS2/rGO nanocomposite show 3D hierarchical flowery architecture where rGO nanosheets were inter...

2015
Xianwen Zeng Lijing Niu Xiuli Wang Xuanming Shi Jiayun Yan

Nano-structured molybdenum disulfide (MoS2) catalysts have been extensively developed for the hydrogen evolution reaction (HER). Herein, a novel hydrothermal intercalation approach is employed to fabricate nanoflower-like 2H–MoS2 with the incorporation of three polymers, polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and polyethylenimine (PEI). The as-prepared MoS2 specimens were characte...

2015
Yumeng Shi Henan Li Jen It Wong Xiaoting Zhang Ye Wang Huaihe Song Hui Ying Yang

Atomically thin semiconducting transition-metal dichalcogenides have been attracting lots of attentions, particularly, molybdenum disulfide (MoS2) monolayers show promising applications in field effect transistors, optoelectronics and valleytronics. However, the controlled synthesis of highly crystalline MoS2 remain a challenge especially the systematic approach to manipulate its structure and ...

Journal: :Nanoscale 2015
Wentao Zhang Yanru Wang Daohong Zhang Shaoxuan Yu Wenxin Zhu Jing Wang Fangqing Zheng Shuaixing Wang Jianlong Wang

A prerequisite for exploiting most proposed applications for MoS2 is the availability of water-dispersible functionalized MoS2 nanosheets in large quantities. Here we report one-step synthesis and surface functionalization of MoS2 nanosheets by a facile ionic liquid assisted grinding method in the presence of chitosan. The selected ionic liquid with suitable surface energy could efficiently ove...

2017
Lanzhong Hao Yunjie Liu Zhide Han Zhijie Xu Jun Zhu

Molybdenum disulfide (MoS2) nanoscaled films are deposited on GaAs substrates via magnetron sputtering technique, and MoS2/GaAs heterojunctions are fabricated. The lateral photovoltaic effect (LPE) of the fabricated MoS2/GaAs heterojunctions is investigated. The results show that a large LPE can be obtained in the MoS2/n-GaAs heterojunction. The LPE exhibits a linear dependence on the position ...

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