Morphology control of tungsten nanorods grown by glancing angle RF magnetron sputtering under variable argon pressure and flow rate

Authors

Khedir R. Khedir, University of Arkansas at Little Rock
Ganesh K. Kannarpady, University of Arkansas at Little RockFollow
Hidetaka Ishihara, University of Arkansas at Little Rock
Justin Woo, University of Arkansas at Little Rock
Charles Ryerson, Center US Army Corps of Engineers
Alexandru S. Biris, University of Arkansas at Little Rock

Document Type

Article

Date of this Version

2010

Comments

Published in Physics Letters A, 374, (2010), 4430–4437

Abstract

Morphologically novel tungsten nanorods (WNRs) with the co-existence of two crystalline phases, α-W (thermodynamically stable) and β-W, were fabricated by glancing angle RF magnetron sputtering technique under various Ar pressures and flow rates. For these nanorods, a significant variation in their morphology and surface roughness was observed. These structures could be useful in a wide range of applications such as field emission, robust superhydrophobic coatings, energy, and medicine.