Analysis of nanopore arrangement of porous alumina layers formed by anodizing in oxalic acid at relatively high temperatures

A hybrid HPC/cloud distributed infrastructure

The effect of electrolyte change on the morphology and degree of nanopore order of porous alumina formed by two-step anodization

Anodic porous alumina layers were fabricated by a two-step self-organized anodization in 0.3 M oxalic acid under various anodizing potentials ranging from 30 to 60 V at two different temperatures (10 and 17 ∘C). The effect of anodizing conditions on structural features and pore arrangement of AAO was investigated in detail by using the dedicated executable publication combined with ImageJ software. With increasing anodizing potential, a linear increase of the average pore diameter, interpore distance, wall thickness and barrier layer thickness, as well as a decrease of the pore density, were observed. In addition, the higher pore diameter and porosity values were obtained for samples anodized at the elevated temperature, independently of the anodizing potential. A degree of pore order was investigated on the basis of Delaunay triangulations (defect maps) and calculation of pair distribution or angle distribution functions (PDF or ADF), respectively. All methods confirmed that in order to obtain nanoporous alumina with the best, hexagonal pore arrangement, the potential of 40 V should be applied during anodization. It was confirmed that the dedicated executable publication can be used to a fast and complex analysis of nanopore arrangement and structural features of nanoporous oxide layers.

/pdf/analysis-of-nanopore-arrangement-and-structural-features-of-54uzcto186.pdf

Analysis of nanopore arrangement and structural features of anodic alumina layers formed by two-step anodizing in oxalic acid using the dedicated executable software

We present a global overview of the methodology developed within the MAPPER European project to design, implement and run a multiscale simulation on a distributed supercomputing infrastructure. Our goal is to highlight the main steps required when developing an application within this framework. More specifically, we illustrate the proposed approach in the case of hydrology applications. A performance model describing the execution time of the application as a function of its spatial resolution and the hardware performance is proposed. It shows that Distributed Multiscal Computation is beneficial for large scale problems.

/pdf/distributed-multiscale-computations-using-the-mapper-npvvnv6iu4.pdf

Distributed Multiscale Computations Using the MAPPER Framework

The GridSpace2 environment, developed in the scope of the PL-Grid Polish National Grid Initiative, constitutes a comprehensive platform which supports e-science applications throughout their entire lifecycle. Application development may involve multiple phases, including writing, prototyping, testing and composing the application. Once the application attains maturity it becomes operable and capable of being executed, although it may still be subject to further development --- including actions such as sharing with collaborating researchers or making results publicly available with the use of dedicated publishing interfaces. This paper describes each of these phases in detail, showing how the GridSpace2 platform can assist the developers and publishers of computational experiments.

Managing entire lifecycles of e-science applications in the gridspace2 virtual laboratory --- from motivation through idea to operable web-accessible environment built on top of PL-Grid e-infrastructure

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Managing entire lifecycles of e-science applications in the gridspace2 virtual laboratory --- from motivation through idea to operable web-accessible environment built on top of PL-Grid e-infrastructure