Polymer nanofibers via nozzle-free centrifugal spinning

We report on the unexpected finding of nanoscale fibers with a diameter down to 25 nm that emerge from a polymer solution during a standard spin-coating process. The fiber formation relies upon the Raleigh-Taylor instability of the spin-coated liquid film that arises due to a competition of the centrifugal force and the Laplace force induced by the surface curvature. This procedure offers an attractive alternative to electrospinning for the efficient, simple, and nozzle-free fabrication of nanoscale fibers from a variety of polymer solutions.


Published in:
Nano Letters, 8, 1187-1191
Year:
2008
Keywords:
Laboratories:




 Record created 2010-11-30, last modified 2018-03-17


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