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Query: EC:1.10.3.3 (
ascorbate oxidase
)
778
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
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.
...
PMID:Controlling interferometric properties of nanoporous anodic aluminium oxide. 2228 Aug 84
Nanochannel arrays were fabricated by the self-organized multi-electrolyte-step anodic aluminum oxide [
AAO
] method in this study. The anodization conditions used in the multi-electrolyte-step
AAO
method included a phosphoric acid solution as the electrolyte and an applied high voltage. There was a change in the phosphoric acid by the
oxalic acid
solution as the electrolyte and the applied low voltage. This method was used to produce self-organized nanochannel arrays with good regularity and circularity, meaning less power loss and processing time than with the multi-step
AAO
method.
...
PMID:Multi-electrolyte-step anodic aluminum oxide method for the fabrication of self-organized nanochannel arrays. 2233 68
