Journal of Nanomaterials & Molecular NanotechnologyISSN: 2324-8777

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Research Article, J Nanomater Mol Nanotechnol Vol: 6 Issue: 1

Strain in Vanadium Thin Film due Nanosecond Laser Treatment

Kotsedi L1,2*, Kaviyarasu K1,2, Fuku XG1,2, Sone BT1,2 and Maaza M1,2
1UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, College of Graduate Studies, University of South Africa, Muckleneuk ridge, PO Box 392, Pretoria-South Africa
2Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure road, Somerset West 7129, PO Box 722, Somerset West, Western Cape, South Africa
Corresponding author : Kotsedi L
UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, College of Graduate Studies, University of South Africa, Muckleneuk ridge, PO Box 392, Pretoria-South Africa
E-mail:
[email protected]
Received: June 21, 2016 Accepted: December 31, 2016 Published: January 08, 2017
Citation: Kotsedi L, Kaviyarasu K, Fuku XG, Sone BT, Maaza M (2017) Strain in Vanadium Thin Film due Nanosecond Laser Treatment. J Nanomater Mol Nanotechnol 6:1. doi: 10.4172/2324-8777.1000207

Abstract

Strain in Vanadium Thin Film due Nanosecond Laser Treatment

A thin coating of vanadium was grown on a glass substrate using vacuum coating technique. Piezoelectric thickness monitor was used to measure the thickness of the deposited coatings in-situ. The vanadium layer was then treated with a nanosecond pulsed fiber laser source in ambient conditions, and this resulted in the surface cracking due to heat dissipation from the laser. The density of cracks was observed to increase in a direct proportion to the laser fluence. The increase in the density of the cracks was accompanied by the surface modification of the of the vanadium layer as observed in the high-resolution scanning electron microscope. At higher laser fluence there are pinholes forming on the surface of the laser, and this is due to the laser punching and taking place at those experimental conditions.

Keywords: Femtosecond laser; Cracks; Scanning electron microscope; Vanadium coatings; Residual stress/strain

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