4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
The Proceedings of SAIP2016 published on 24 December 2017
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Characterization of elastic constants and electronic property of diamond-like carbon films.

Presented by Mr. wilfred MBIOMBI on 6 Jul 2016 from 11:10 to 11:30
Type: Oral Presentation
Track: Track A - Division for Physics of Condensed Matter and Materials

Abstract

Diamond like carbon (DLC) coatings continue to attract intensive research interest due to their excellent properties, in this work, the role of the sp3 and sp2 bonds on the electronic and elastic properties of diamond-like carbon(DLC) thin films is investigated. Diamond-like carbon thin films were prepared using a graphite target and CH4/Ar ambient by RF and DC reactive magnetron sputtering. The sputter power was set at 200W while the CH4 flow varied (3.5-25 sccm) at a constant argon flow rate. Raman spectroscopy was used to estimate the sp3/sp2 ratio in DLC films by using laser excitation wavelength of 514 nm. The density, thickness and the surface roughness have been studied X-ray reflectivity (XRR). The X-ray diffraction was used to characterize the crystal structure while the electrical properties were established by Current-Voltage (I-V) characteristics. The elastic constants have been evaluated using Surface Brillouin scattering on diamond-like carbon thin films /(001)Si under diverse conditions of growth.

Award

yes

Level

phD

Supervisor

Dr.Bheki and Dr.Daniel wamwangi daniel.wamwangi@wits.ac.za and bhekumusa.mathe@wits.ac.za

Paper

no

Permission

no

Place

Location: Kramer Law building
Address: UCT Middle Campus Cape Town
Room: LT1


Primary authors

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