microfluidics - make conventional flow control strategies...

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Kevin Wang Professor Boering Chem C 96 (Chem Bio) 30 September 2009 Microfluidics When working with microfluidics, one must be able to control the flow rate and dynamics of the microfluidic system itself in order correctly proceed with the intended study/experiment. However, when working at a microscopic level with fluidic flow, some complications arise. The three main challenges which are faced by scientists dealing with microfluidics are 1) that the force depend on channel width n a way that
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Unformatted text preview: make conventional flow control strategies useless, 2) If surface area or volume is large, then the surface tension interactions with the wall become important and, 3) Most methods of fabrication are planar and moving parts tend to stick and jam. With these challenges, microfluidicists have developed methods of controlling flow with tripolymer blocks and other valves which help to control the rate as well as flow to obtain either a efficient mixing or flow within the system....
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