Controlled short time large scale synthesis of magnetic cobalt nanoparticles on carbon nanotubes by flash annealing

If you need an accessible version of this item, please submit a remediation request.
Date
2020
Language
English
Embargo Lift Date
Committee Members
Degree
Degree Year
Department
Grantor
Journal Title
Journal ISSN
Volume Title
Found At
AIP
Abstract

Nanopatterned arrays of discrete cobalt nanostructures showing characteristic parameter-dependent sizes are formed from continuous thin films on a carbon nanotube substrate using millisecond pulsed intense UV light. The nanoparticles exhibit ferromagnetic behavior with magnetic remanence and coercivity depending on the particle size. The end-state particle size is shown to be a function of initial thin film thickness and excitation energy and is therefore tunable. The evolutionary process from continuous thin films to a discrete morphology is thermodynamically driven by the large surface energy difference between metastable thin films and the underlying carbon nanotube substrate. Evidence of the Danielson model of the dewetting process is observed. These arrays can find applications as platforms for the self-assembly of magnetically susceptible materials, such as iron or nickel nanostructures, into a conduction matrix for applications in energy extraction from a latent heat storage device.

Description
item.page.description.tableofcontents
item.page.relation.haspart
Cite As
Mosey, A., Yue, L., Gaire, B., Ryu, J. E., & Cheng, R. (2020). Controlled short time large scale synthesis of magnetic cobalt nanoparticles on carbon nanotubes by flash annealing. Journal of Applied Physics, 127(4), 043902. https://doi.org/10.1063/1.5131579
ISSN
Publisher
Series/Report
Sponsorship
Major
Extent
Identifier
Relation
Journal
Journal of Applied Physics
Source
Publisher
Alternative Title
Type
Article
Number
Volume
Conference Dates
Conference Host
Conference Location
Conference Name
Conference Panel
Conference Secretariat Location
Version
Final published version
Full Text Available at
This item is under embargo {{howLong}}