Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/86975
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Controlling interferometric properties of nanoporous anodic aluminium oxide
Author: Kumeria, T.
Losic, D.
Citation: Nanoscale Research Letters, 2012; 7(1):88-1-88-10
Publisher: SpringerOpen
Issue Date: 2012
ISSN: 1931-7573
1556-276X
Statement of
Responsibility: 
Tushar Kumeria and Dusan Losic
Abstract: A study of reflective interference spectroscopy [RIfS] properties of nanoporous anodic aluminium oxide [AAO] with the aim to develop a reliable substrate for label-free optical biosensing is presented. The influence of structural parameters of AAO including pore diameters, inter-pore distance, pore length, and surface modification by deposition of Au, Ag, Cr, Pt, Ni, and TiO2 on the RIfS signal (Fabry-Perot fringe) was explored. AAO with controlled pore dimensions was prepared by electrochemical anodization of aluminium using 0.3 M oxalic acid at different voltages (30 to 70 V) and anodization times (10 to 60 min). Results show the strong influence of pore structures and surface modifications on the interference signal and indicate the importance of optimisation of AAO pore structures for RIfS sensing. The pore length/pore diameter aspect ratio of AAO was identified as a suitable parameter to tune interferometric properties of AAO. Finally, the application of AAO with optimised pore structures for sensing of a surface binding reaction of alkanethiols (mercaptoundecanoic acid) on gold surface is demonstrated.
Keywords: nanoporous alumina; reflective interference spectroscopy; interference spectrum; optical label-free biosensing
Rights: © 2012 Kumeria and Losic; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
RMID: 0020127849
DOI: 10.1186/1556-276X-7-88
Grant ID: http://purl.org/au-research/grants/arc/DP0770930
Appears in Collections:Chemical Engineering publications

Files in This Item:
File Description SizeFormat 
hdl_86975.pdfPublished version2.43 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.