Yuvaraj, D and Kaushik, R and Rao, Narasimha K (2010) Optical, Field-Emission, and Antimicrobial Properties of ZnO Nanostructured Films Deposited at Room Temperature by Activated Reactive Evaporation. In: Journal of the American Chemical Society, 2 (4). pp. 1019-1024.
am900792k.pdf - Published Version
Restricted to Registered users only
Download (4Mb) | Request a copy
ZnO nanostructures were deposited on flexible polymer sheet and cotton fabrics at room temperature by activated reactive evaporation. Room-temperature photoluminescence spectrum of ZnO nanostructured film exhibited a week intrinsic UV emission and a strong broad yellow-orange visible emission. TEM and HRTEM studies show that the grown nanostructures are crystalline in nature and their growth direction was indentified to be along . ZnO nanostructures grown on the copper-coated flexible polymer sheets exhibited stable field-emissio characteristics with a threshold voltage of 2.74 V/mu m (250 mu A) and a very large field enhancement factor (beta) of 23,213. Cotton fabric coated with ZnO nanostructures show an excellent antimicrobial activity against Staphylococcus aureus bacteria (Gram positive), and similar to 73% reduction in the bacterial population is achieved compared to uncoated fabrics after 4 h in viability. Using a shadow mask technique, we also selectively deposited the nanostructures at room temperature on polymer substrates.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to American Chemical Society.|
|Keywords:||activated reactive evaporation;gas phase growth;ZnO nanostructures;field-emission studies;cotton fabrics and antibacterial property.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Division of Chemical Sciences > Solid State & Structural Chemistry Unit
|Date Deposited:||04 Jun 2010 05:34|
|Last Modified:||19 Sep 2010 06:06|
Actions (login required)