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Optical Measurements of Structure and Orientation in Sheared Carbon-Nanotube Suspensions



Erik K. Hobbie, Haonan Wang, H W. Kim, Charles C. Han, E A. Grulke, Jan Obrzut


We describe an optical metrology for measuring shear-induced structure and orientation in dilute dispersions of multiwalled carbon nanotubes. Small-angle polarized light scattering and optical microscopy are combined in situ to quantify the structural anisotropy of multiwalled carbon nanotubes in semidilute, surfactant-stabilized aqueous suspensions under simple shear flow. Measurements performed as a function of the applied shear rate are used to demonstrate the capabilities and limitations of the experimental technique, which should be suitable for probing the shear response of polymer-nanotube melts and solutions.
Review of Scientific Instruments
No. 3


carbon nantubes, multiwalled, polarized light scattering, shear flow


Hobbie, E. , Wang, H. , Kim, H. , Han, C. , Grulke, E. and Obrzut, J. (2003), Optical Measurements of Structure and Orientation in Sheared Carbon-Nanotube Suspensions, Review of Scientific Instruments, [online], (Accessed March 1, 2024)
Created February 28, 2003, Updated October 12, 2021