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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 44405 (04)
- University: Sharif University of Technology
- Department: Physics
- Advisor(s): Ejtehadi, Mohammad Reza; Nikamal, Mahdi
- Abstract:
- Unique and interesting properties of Graphene with two dimentional and CarbonNanotubes rod-like and their increasing applications such as application in electronic industry, sensors, displays, supercapasitors, pharmacy, etc, they hase become an important field of condensed matter and nanotechnology. Crystalization process and the distribution of light atoms and molecules on graphene surface hase become one of the reaserche arease of interest and hase attracted much attention. These studies play an important role in design of nanosensors graphene based. Most of the experimental observatins of surface diffusion in the chemical and physics systems have been classically described and characterized by the transition-state theorry. This problem is closely related to the underestanding of friction and energy dissipation anabels the design and manufacture of nanomachine. In the prresent work, we use molecular dynamics (MD) simulations to study the motion of an isolated Carbon Nanoube(CNT) molecul on graphene substrate. Here, we show that the CNT/Graphene system exhibits in superdiffusion regims. the result of simulation for diferent length, show that this character chang the mobility of CNT. And then we show CNt doesn’t have sliding rotation and the rotational degree of freedom can be ignored in computing, because the correlation between the tangential cmponent of the linear velocity is almost zero
- Keywords:
- Carbon Nanotubes ; Pure Role Motion ; Molecular Dynamic Simulation ; Graphene
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