Measuring the lengthening kinetics of aligned nanostructures by spatiotemporal correlation of height and orientation.
Owing to their inherent tortuosity, the collective height of vertically aligned nanostructures does not equal the average length of the individual constituent nanostructures, and therefore temporal height measurement is not an accurate measure of the genuine growth kinetics. We use high-resolution spatial mapping of alignment by small-angle X-ray scattering (SAXS) to transform real-time measurements of array height to the average length of the nanostructures. Applying this approach to carbon nanotube (CNT) forest growth transforms the kinetics from a sub-linear to a linear relationship with time, highlighting the potential for insights into the limiting growth mechanisms of CNTs and other one-dimensional nanostructures.
Meshot
Eric R
ER
Department of Mechanical Engineering, University of Michigan, 2350 Hayward Street, Ann Arbor, MI 48109, USA.
Bedewy
Mostafa
M
Lyons
Kevin M
KM
Woll
Arthur R
AR
Juggernauth
K Anne
KA
Tawfick
Sameh
S
Hart
A John
AJ