Direct measurement of bending stiffness and estimation of Young's modulus of vertically aligned carbon nanofibers
Artikel i vetenskaplig tidskrift, 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

Författare

Farzan Alavian Ghavanini

Chalmers, Teknisk fysik, Elektronikmaterial och system

H. Jackman

Karlstads universitet

Per Lundgren

Chalmers, Teknisk fysik, Elektronikmaterial och system

Krister Svensson

Karlstads universitet

Peter Enoksson

Chalmers, Teknisk fysik, Elektronikmaterial och system

Journal of Applied Physics

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

Vol. 113 19 194308

Styrkeområden

Nanovetenskap och nanoteknik

Transport

Produktion

Fundament

Grundläggande vetenskaper

Ämneskategorier

Elektroteknik och elektronik

Infrastruktur

Nanotekniklaboratoriet

DOI

10.1063/1.4803853

Mer information

Senast uppdaterat

2018-05-23