Ultrafast nano-oscillators based on interlayer-bridged carbon nanoscrolls

Details Ultrafast nano-oscillators based on interlayer-bridged carbon nanoscrolls Ultrafast nano-oscillators based on interlayer-bridged carbon nanoscrolls

2011-11-09

arxiv.org/abs/1111.2294v1

Nanoscale Research Letters, 6, 470 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

28 pages, 9 figures

Scientific paper

10.1186/1556-276X-6-47

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 10s gigahertz (GHz). 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 nano-scale energy transduction, harnessing and storage (e.g., from electric to mechanical).

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