A new method to address gas blockage in nanochannels
Gas molecules tended to accumulate and form nanobubbles in nanochannels,raised a challenging issue in the application of micro and nanofluidic devices.In order to overcome the problem,molecular dynam-ics simulations were employed to investigate the accumulation of gas molecules in single-walled carbon nano-tubes,leading to the formation of nanobubbles that block the flow of water in the channel.A driving method based on ratchet theory and resonant excitation was then proposed.The simulation results demonstrated that compared to the conventional hydrostatic driving method,the resonant driving approach rapidly removed nanobubbles in a very short time and also generated a high water flow rate.The presented study would provide a new approach to address gas blockage in nanochannels.
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