Optical, Field-Emission, and Antimicrobial Properties of ZnO Nanostructured Films Deposited at Room Temperature by Activated Reactive Evaporation
Data(s) |
01/04/2010
|
---|---|
Resumo |
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 [002]. 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. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/27724/1/am900792k.pdf 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. |
Publicador |
American Chemical Society |
Relação |
http://pubs.acs.org/doi/abs/10.1021/am900792k http://eprints.iisc.ernet.in/27724/ |
Palavras-Chave | #Instrumentation and Applied Physics (Formally ISU) #Solid State & Structural Chemistry Unit |
Tipo |
Journal Article PeerReviewed |