Fry D, Langhorst B, Kim H, Grulke E, Wang H, Hobbie Erik K
National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
Phys Rev Lett. 2005 Jul 15;95(3):038304. doi: 10.1103/PhysRevLett.95.038304.
We measure the anisotropy of sheared carbon-nanotube suspensions for a broad range of concentration, aspect ratio, and strain rate using a variety of methods. Our measurements highlight the importance of excluded-volume interactions in the semidilute regime, with scaling in terms of a dimensionless shear rate. Our results also suggest that such interactions might be exploited to fractionate carbon nanotubes by length in simple shear flow.
