The Influence of the Structural Parameters of Nanoporous Alumina Matrices on Optical Properties

In this work, two types of nanoporous alumina membranes were prepared and tested. Structural features of the samples obtained by using different acids were investigated by scanning electron microscopy (SEM). And further SEM-images were analyzed by different types of fractal dimension estimation meth...

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Published inMetals (Basel ) Vol. 14; no. 6; p. 651
Main Authors Muratova, Ekaterina N., Ponomareva, Alina A., Shemukhin, Andrey A., Balakshin, Yuriy V., Evseev, Aleksandr P., Moshnikov, Vyacheslav A., Zhilenkov, Anton A., Kichigina, Olga Yu
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2024
Subjects
Alumina
Aluminum
Aluminum oxide
Blood vessels
Capillaries
Charged particles
Dielectrics
Energy
Energy gap
Fractal analysis
Fractal geometry
Ion beams
Ion irradiation
Ion scattering
localized radiation effects
Membranes
nanoporous alumina
Optical properties
Rutherford backscattering
Scanning electron microscopy
surface structure
Viscosity
Russia
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Summary:In this work, two types of nanoporous alumina membranes were prepared and tested. Structural features of the samples obtained by using different acids were investigated by scanning electron microscopy (SEM). And further SEM-images were analyzed by different types of fractal dimension estimation methods. The transmission and scattering of accelerated He+ ions were studied in experiments on the ion irradiation of dielectric channels based on porous alumina. An ion accelerator was used as a source of the He+ beam with an energy of 1.7 MeV. Ion scattering was studied by Rutherford backscattering spectrometry. Helium transition through nanoporous alumina at various angles between the normal to the sample and the beam direction were observed. It is shown that the porous structure of anodic aluminum oxide is excellent as a dielectric matrix of nanocapillaries. Owing to the small angle scattering, it allows for the transportation of the accelerated charged particles through the dielectric capillaries, and, as a result, the localization of high energy ion irradiation effects. Additionally, according to the transmission of UV–V is spectra, the energy gaps of samples obtained were calculated.
ISSN:2075-4701
2075-4701
DOI:10.3390/met14060651