Transport and Regulation of Water Molecules and Ions in Restricted Nanostructures

Worldwide commercial interest in single-walled carbon nanotubes (SWCNTs) reflected in the use of nanofluidic devices. Recently, with the rapid development of molecular dynamics simulation, single-walled carbon nanotubes are usually used in a variety of pipeline simulation, such as simulation of cell membrane ion channel mechanism. Although the working mechanism of ion switch in bio-ion channels has been studied extensively in the field of biology, most of them are based on macroscopic studies .In this paper, we focus on the control behavior of the ion in the pipeline for a very short time in the nanometer scale, trying to find microscopic patterns of ion switch. We also try to find special places to fix the ion so that we can control the transport of water molecules. The regulation process of ions in ion channels were studied and discussed.