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 cent...

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Veröffentlicht in:	Nano letters 2008-04, Vol.8 (4), p.1187-1191
Hauptverfasser:	Weitz, R. T, Harnau, L, Rauschenbach, S, Burghard, M, Kern, K
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalytic methods Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Materials science Methods of nanofabrication Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Physics Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties)
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Beschreibung
Zusammenfassung:	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.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl080124q