Journal
NANO RESEARCH
Volume 2, Issue 12, Pages 938-944Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-009-9096-6
Keywords
Carbon nanotube; nanopumping; drug delivery; MD simualtion
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Funding
- Department of Energy
- China Scholarship Council
- Natural Science Foundation of China [50410179, 50772068]
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We demonstrate the feasibility of using a carbon nanotube to nanopump molecules. Molecular dynamics simulations show that the transport and ejection of a C-20 molecule via a single-walled carbon nanotube (SWNT) can be achieved by a sustained mechanical actuation driven by two oscillating tips. The optimal condition for nanopumping is found when the tip oscillation frequency and magnitude correlate to form quasi steady-state mechanical wave propagation in the SWNT, so that the energy transfer process is optimal leading to maximal molecular translational motion and minimal rotational motion. Our finding provides a potentially useful mechanism for using an SWNT as a vehicle to deliver large drug molecules.
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