Direct measurement of bending stiffness and estimation of Young's modulus of vertically aligned carbon nanofibers
Journal article, 2013

The bending stiffness of individual, as-grown, vertically aligned carbon nanofibers was measured using a custom-built atomic force microscope placed inside a scanning electron microscope. The internal structure of the nanofiber was best modeled as dual-phase, composed of an inner graphitic core covered with a tapered amorphous carbon shell. It was found that the fibers have a relatively low bending stiffness, with Young's modulus values of about 10 GPa for the inner core and 65 GPa for the outer shell. The low Young's modulus of the inner core is attributed to a non-zero angle between the graphitic sheets and the nanofiber axis. The weak shear modulus between graphitic sheets thereby dominates the mechanical behaviour of the fibers.

elastic-modulus

nanotubes

switches

Author

Farzan Alavian Ghavanini

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

H. Jackman

Karlstad University

Per Lundgren

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Krister Svensson

Karlstad University

Peter Enoksson

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Journal of Applied Physics

0021-8979 (ISSN) 1089-7550 (eISSN)

Vol. 113 19 194308

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Transport

Production

Roots

Basic sciences

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

Infrastructure

Nanofabrication Laboratory

DOI

10.1063/1.4803853

More information

Latest update

5/23/2018