We demonstrate the feasibility of using a carbon nanotube to nanopump molecules.Molecular dynamics simulations show that the transport and ejection of a C20 molecule via a single-walled carbon nanotube(SWNT)can be ach...We demonstrate the feasibility of using a carbon nanotube to nanopump molecules.Molecular dynamics simulations show that the transport and ejection of a C20 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.展开更多
基金Department of Energy-Basic Energy Science program.In addition,M.C.thanks the China Scholarship Council and D.X.thanks the Natural Science Foundation of China(Nos.50410179 and 50772068)for their support.
文摘We demonstrate the feasibility of using a carbon nanotube to nanopump molecules.Molecular dynamics simulations show that the transport and ejection of a C20 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.
