Ultrafast nano-oscillators based on interlayer-bridged carbon nanoscrolls

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• 作者：Zhao Zhang (1)
  Teng Li (1) (2)
  
• 关键词：carbon nanoscroll ; graphene ; carbon nanotube ; nano ; oscillator ; molecular dynamics
• 刊名：Nanoscale Research Letters
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：6
• 期：1
• 全文大小：589KB
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• 作者单位：Zhao Zhang (1)
  Teng Li (1) (2)
  
  1. Department of Mechanical Engineering, University of Maryland, College Park, MD, 20742, USA
  2. Maryland NanoCenter, University of Maryland, College Park, MD, 20742, USA
  
• ISSN：1556-276X

文摘

We demonstrate a viable approach to fabricating ultrafast axial nano-oscillators based on carbon nanoscrolls (CNSs) using molecular dynamics simulations. Initiated by a single-walled carbon nanotube (CNT), a monolayer graphene can continuously scroll into a CNS with the CNT housed inside. The CNT inside the CNS can oscillate along axial direction at a natural frequency of tens of gigahertz. We demonstrate an effective strategy to reduce the dissipation of the CNS-based nano-oscillator by covalently bridging the carbon layers in the CNS. We further demonstrate that such a CNS-based nano-oscillator can be excited and driven by an external AC electric field, and oscillate at more than 100 GHz. The CNS-based nano-oscillators not only offer a feasible pathway toward ultrafast nano-devices but also hold promise to enable nanoscale energy transduction, harnessing, and storage (e.g., from electric to mechanical).