Anodic Alumina-Based Nanoporous Coatings for Sensory Applications

Voitovich, I. D.; Lebyedyeva, T.; Rachkov, A. E.; Gorbatiuk, O. B.; Shpylovyy, Pavlo

doi:10.1007/978-3-319-18543-9_29

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…The cross-section SEM image of the sample with PAA obtained by anodic oxidation from Al film published earlier by us [ 12 ] reveals parallel pores of PAA in base film which are directed perpendicular to the substrate.…”

Section: Resultsmentioning

confidence: 99%

“…We can consider as a separate area of research among the mentioned above the creation of nanostructured anodic alumina of optical sensors [ 10 ]. The nanostructured surface of the PAA of these sensors can itself have both a functional purpose—that is, to be part of a sensor, such as a waveguide one [ 11 , 12 ], and serve as a matrix for growing of the elements that interact with the radiation input [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…We studied the films with a thickness of 200–500 nm. This is exactly the type of PAA films used by us for the waveguide layer of the optical sensors, based on metal-clad waveguides (MCWG) [ 12 ]. The particularity of our study is that the investigations were carried out on freshly deposited aluminum films, whose structure has not been subjected to changes by annealing, aging, or chemical surface treatment.…”

Section: Introductionmentioning

confidence: 99%

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Formation of Nanoporous Anodic Alumina by Anodization of Aluminum Films on Glass Substrates

et al. 2016

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Our research was aimed at the study of aluminum films and porous anodic alumina (PAA) films in thin-film РАА/Al structures for optical sensors, based on metal-clad waveguides (MCWG). The results of the scanning electron microscopy (SEM) and atomic force microscopy (AFM) studies of the structure of Al films, deposited by DC magnetron sputtering, and of PAA films, formed on them, are presented in this work.The study showed that the structure of the Al films is defined by the deposition rate of aluminum and the thickness of the film. We saw that under anodization in 0.3 M aqueous oxalic acid solution at a voltage of 40 V, the PAA film with a disordered array of pores was formed on aluminum films 200–600 nm thick, which were deposited on glass substrates with an ultra-thin adhesive Nb layer. The research revealed the formation of two differently sized types of pores. The first type of pores is formed on the grain boundaries of aluminum film, and the pores are directed perpendicularly to the surface of aluminum. The second type of pores is formed directly on the grains of aluminum. They are directed perpendicularly to the grain plains. There is a clear tendency to self-ordering in this type of pores.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Formation of Nanoporous Anodic Alumina by Anodization of Aluminum Films on Glass Substrates

et al. 2016

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“…The team of authors has developed and manufactured a series of devices under the general name "Plasmontest", which are used in refractometric and biochemical studies, as well as in the development of thin-film technology of sensor substrates for SPR sensors and metal clad waveguide (MCWG) sensors based on layers of metals and oxides [7][8][9][10][11][12][13][14][15][16].…”

Section: Designing Devices Of the "Plazmontest" Seriesmentioning

confidence: 99%

“…To test the characteristics of nanostructured Al-porous Al2O3 coatings directly in the process of substrate manufacturing using the already proven technology, we used the device "Plasmontest", which has a high speed (recording time of reflection curve -1 sec) and allows you to quickly stop the process when the specified parameters of the nanostructured layer are reached [9][10][11].…”

Section: Applications Of "Plasmontest" Devicesmentioning

confidence: 99%

Development and Application of Devices Based on Surface Plasmon Resonance

Lebyedyeva

Minov

Sutkovyi

et al. 2020

Cybernetics and Computer Technologies

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Introduction. The purpose of the SPR sensor is to quickly and accurately determine the refractive index of the environment with the ability to diagnose the presence of a specific substance. SPR devices and biosensor diagnostic methods for laboratory diagnostics in medicine, veterinary medicine, determination of environmental pollution, for food quality control are being developed. The work is devoted to the development of devices based on the surface plasmon resonance of the “Plasmontest” series, which can be used for refractometric and biosensor applications. The purpose of the paper is to present the development of “Plasmontest” series devices that can be used for laboratory applications, as portable field-research devices and to carry out a comparison of optical circuits of SPR devices, their capabilities and operational characteristics during biochemical and physical experiment. Results. Specific features of the design of devices "Plasmontest" with discrete and aperture optical circuits are outlined. The method of approximation of the resonant SPR curve is proposed to accurately find the value of the resonance minimum. Procedures for normalizing and calibration of devices with aperture optical circuit in single-channel and dual-channel design are developed to improve measurement accuracy. Some features of the developed software for “Plasmontest” series devices are presented. Applications of "Plasmontest" devices for the refractometry and the development of thin-film technological processes as well as for creating the methods of immunosensory detection of a number of bacteria and toxins are described. Conclusions. The work on the creation of “Plasmontest” series devices showed the possibility for creating portable SPR devices and for refractometric, thin film and biosensor studies. It is shown that devices with aperture optical circuitry are the most promising in terms of compactness, reliability and low cost.

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