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Multi- and Single- Atoms Liquid Flow Systems for Nano-sized channels

M-C Lu, F-G Tseng, H-M Hsieh, C-C Chieng
National Tsing Hua University, TW

Keywords: Molecular Dynamic Simulation, nanosized channel, flow characteristics

Abstract:
Flow based assays use continuous forward flow in micro/nano-fluidic systems to deliver and transport biomedical sample to destined spots for biomedical diagnosis. Accurate dose control, less drag force from contact surface, and simpler flow system directing and dispending the bio-fluids are the aims of flow system designs. Fundamnetal flow characteristics inside nano-sized channels are investigated by Molecular Dynamic simulations for argon, water, and ethane molecules. The results indicate the existence of layer structure near the wall and the compressibility effect across the nano-sized channel. The integrated local properties of accommodation factor, laminar friction factor are largely changed due to the change of channel size in nano-scale, which implies the tremendous reduction of the friction of the liquid flow due to the slip velocity. It implies the inter-atomic interaction model between liquid atoms or liquid-solid atoms plays important roles in fluid transport, therefore, very different transport phenomena can be observed for different fluids flowing inside the same size channel in nano-scale.

NSTI Nanotech 2003 Conference Technical Program Abstract

 
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