Tuesday, June 12, 2007

News from Berkely


The thinner - the better

This fiber can be used for the manufacture of more effective chemical sensors ,biochips ,protective clothing and other innovations .Electrospinning is the standard techniques used to manufacture the fiber but it create chaotic tangle rather than controlled patterns , so a varient technique called near field electrospinning is used. This technique offers full control over the path of nano fiber.

UC Berkeley mechanical engineering professor Liwei Lin’s continuous near-field electrospinning technique uses a needle with an inside diameter of 70 microns to supply the polymer solution. The diameter of the fiber produced currently ranges from 500 nanometers to 3 microns, thicker than with tip-based near-field electrospinning, but fibers can be any length.

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