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Reports from University of Rovira and Virgili Provide New Insights into Nanostructures (Nanostructural Engineering of Nanoporous Anodic Alumina for...

September 3, 2014

Reports from University of Rovira and Virgili Provide New Insights into Nanostructures (Nanostructural Engineering of Nanoporous Anodic Alumina for Biosensing Applications)

By a News Reporter-Staff News Editor at Journal of Engineering -- Fresh data on Nanostructures are presented in a new report. According to news reporting from Tarragona, Spain, by VerticalNews journalists, research stated, "Modifying the diameter of the pores in nanoporous anodic alumina opens new possibilities in the application of this material. In this work, we review the different nanoengineering methods by classifying them into two kinds: in situ and ex situ."

The news correspondents obtained a quote from the research from the University of Rovira and Virgili, "Ex situ methods imply the interruption of the anodization process and the addition of intermediate steps, while in situ methods aim at realizing the in-depth pore modulation by continuous changes in the anodization conditions. Ex situ methods permit a greater versatility in the pore geometry, while in situ methods are simpler and adequate for repeated cycles. As an example of ex situ methods, we analyze the effect of changing drastically one of the anodization parameters (anodization voltage, electrolyte composition or concentration). We also introduce in situ methods to obtain distributed Bragg reflectors or rugate filters in nanoporous anodic alumina with cyclic anodization voltage or current."

According to the news reporters, the research concluded: "This nanopore engineering permits us to propose new applications in the field of biosensing: using the unique reflectance or photoluminescence properties of the material to obtain photonic barcodes, applying a gold-coated double-layer nanoporous alumina to design a self-referencing protein sensor or giving a proof-of-concept of the refractive index sensing capabilities of nanoporous rugate filters."

For more information on this research see: Nanostructural Engineering of Nanoporous Anodic Alumina for Biosensing Applications. Materials, 2014;7(7):5225-5253. Materials can be contacted at: Mdpi Ag, Postfach, Ch-4005 Basel, Switzerland. (Wiley-Blackwell -; Materials -

Our news journalists report that additional information may be obtained by contacting J. Ferre-Borrull, Univ Rovira & Virgili, Nanoelect & Photon Syst Grp, E-43007 Tarragona, Spain. Additional authors for this research include J. Pallares, G. Macias and L.F. Marsal.

Keywords for this news article include: Spain, Europe, Tarragona, Engineering, Nanostructural, Nanostructures, Nanotechnology, Emerging Technologies

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Source: Journal of Engineering

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