We report results of diffusion Monte Carlo calculations for both 4 He absorbed in a narrow single walled carbon nanotube (R = 3.42Å) and strictly one dimensional 4 He. Inside the tube, the binding energy of liquid 4 He is approximately three times larger than on planar graphite. At low linear densities , 4 He in a nanotube is an experimental realization of a one-dimensional quantum fluid. Howev...

The transport behavior of water molecules inside a model carbon nanotube is investigated by using nonequilibrium molecular dynamcis (NMED) simulations. The shearing stress between the nanotube wall and the water molecules is identified as a key factor in determining the nanofluidic properties. Due to the effect of nanoscale confinement, the effective shearing stress is not only size sensitive b...

– Motivated by recent experiments [1] reporting that carbon nanotubes immersed in a flowing fluid displayed an electric current and voltage, we numerically study the behaviour of a collection of Brownian particles in a channel, in the presence of a flow field applied on similar but slower particles in a wide chamber in contact with the channel. For a suitable range of shear rates, we find that ...

Due to their mechanical robustness, electrical conductivity, and porosity, vertically aligned carbon nanotubes (CNTs) are an intriguing material for microfluidics. Recently, Chen and colleagues showed that functionalized CNT features can efficiently capture and filter particles in microfluidic flows; and permeability was characterized using CNT-blocked channels. Here, we present flow characteri...

Dynamic analysis of supported pipes conveying pulsating fluid is investigated in Hamiltonian system using precise integration method PIM . First, symplectic canonical equations of supported pipes are deduced with state variable vectors composed of displacement and momentum. Then, PIM with linear interpolation formula is proposed to solve these equations. Finally, this approach’s precision is te...

Key Idea As an indispensable tool for biological investigations into cells, the micropipette allows sampling and injecting fluid across the cell membrane. This operation, however, requires a high dexterity of the operator in order not to damage the membrane and since it is a serial process, it is highly time-consuming if the number of samples grows. To increase the productivity of the sampling ...