Electron-beam-induced welding of 3D nano-objects from beneath

Moskalenko, Andriy, Burbridge, D. J., Viau, G. and Gordeev, S. N. 2007. Electron-beam-induced welding of 3D nano-objects from beneath. Nanotechnology 18 (2) , 025304. 10.1088/0957-4484/18/2/025304

Full text not available from this repository.

Abstract

Exposure of a sample to the electron beam in a scanning electron microscope (SEM) results in the growth of a film of amorphous carbon due to decomposition of hydrocarbon molecules, which are always present in small quantities in the SEM chamber. This growth is induced mainly by secondary electrons backscattered by atoms of both the sample and substrate. We show that, because the secondary electrons are spread beyond the exposed area, this deposit can be grown in areas of geometric shadow and therefore can be used for bonding of different complex 3D nano-objects to a substrate. This is demonstrated by welding 100 nm Fe–Co–Ni nanoparticles to the surface of 2D graphite. The tip of an atomic force microscope was used to probe the mechanical properties of the formed nanostructures. We observed that, for layers thicker than 25 nm, the nanoparticle is bonded so strongly that it is easier to break the particle than to separate it from the substrate.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	Institute of Physics
ISSN:	0957-4484
Last Modified:	23 Mar 2017 04:01
URI:	https://orca.cardiff.ac.uk/id/eprint/46062

Citation Data

Cited 11 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item