MRS Proceedings


Characterization of Curvature in CNT Turf Structures from Two-Dimensional Images

2010 MRS Fall Meeting.

Garrett M. Kelleya1 and David P. Fielda1

a1 School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920, U.S.A.


Carbon nanotube turfs are collections of nanotubes in a turf or mat assembly with potential application as thermal switches, flat panel displays, hard drives, sensors, etc. The nano-topology of the turf necessarily relates to the turf properties; electrical, thermal, optical, etc. A simple method to quantitatively characterize the density, tortuosity and path connectedness of the turfs using secondary electron imaging was previously developed. The present work aims at developing the groundwork for a more realistic measure of tortuosity by using a deterministic approach to obtain the radii of semi-circular tubes as observed in projected images.

(Online publication March 17 2011)

Key Words:

  • scanning electron microscopy (SEM);
  • structural;
  • nanostructure