Electrical properties of alumina-based ceramic barrier layers for dielectric barrier discharge

Zemánek, Miroslav; Přibyl, Roman; Kelar, Jakub; Pazderka, Michal; Šťastný, Přemysl; Kúdelčík, Jozef; Trunec, Martin; Černák, Mirko

doi:10.1088/1361-6595/ab28fa

Cited by 11 publications

(18 citation statements)

References 22 publications

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“…This is due to non-zero impedance of real power supply that in our case is HV transformer supplied by inverter with rectangular modulation at sub-MHz frequencies, see figure 2. The comparison of peak positions of both kinds has been shown already in [13]. Such voltage drops are caused by current peaks, and therefore the voltage drops' FWHM can be assumed to be of the same order as current peaks' FWHM.…”

Section: Discharge Mechanism and Current Peaksmentioning

confidence: 98%

“…The dimensions in our CDBD configuration are between 'ideal' case for studyone or two filament problem and 'realistic' case-hundreds filament problem that can be seen in the industry-DCSBD discharge (see above). For more details, see [13,14]. Figure 1 illustrates the examples mentioned above.…”

Section: Introductionmentioning

confidence: 99%

“…permittivity, loss tangent, etc, and the discharge properties on the ceramics such as ignition and quenching voltage. One of the first systematic studies were introduced in [13,14,17], where the impact of magnesium on the ignition and quenching voltages was studied. Such measurement requires a proper method also suitable for further statistical processing.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Robust current peak detection method for dielectric barrier discharges

Pazderka¹,

Přibyl²,

Zemánek³

et al. 2020

J. Phys. D: Appl. Phys.

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We present a robust method of current peaks detection which can be easily applied to the atmospheric pressure dielectric barrier discharge characterization. This method uses passive filters and is suitable for automation. The design of apparatus and challenges are discussed in detail. We present an adapted definition of ignition voltage suitable for our method and show its relevance on a large statistical sample. Finally, we show the applicability of the method for atmospheric and lower pressure discharges and estimate its limits.

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Section: Discharge Mechanism and Current Peaksmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Robust current peak detection method for dielectric barrier discharges

Pazderka¹,

Přibyl²,

Zemánek³

et al. 2020

J. Phys. D: Appl. Phys.

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“…Its chemical inertness and a lofty melting point of 2072 °C further fortify its industrial allure. Be it in electronics, − the ceramic sphere, , or medical realms, α-alumina’s influence is ubiquitous. When scaled to nanometric dimensions, it diversifies its utility, gracing transparent ceramics, cosmetic fillers, , ceramic tapes, and even serving as catalyst carriers …”

Section: Introductionmentioning

confidence: 99%

Utilizing Wyckoff Sites to Construct Machine-Learning-Driven Interatomic Potentials for Crystalline Materials: A Case Study on α-Alumina

Rodríguez-Martínez,

Schwedek,

Salazar

et al. 2024

J. Phys. Chem. C

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We present a methodology leveraging machine learning models to generate interatomic potentials for crystalline materials. This approach is rooted in the material's crystallography in question. Specifically, we tap into the occupied Wyckoff sites, extracting the defining features that encapsulate the atomic local order in the material. Our choice for the target variable is the formation energy per atom, derived from the total energy of the structure's representative cell. Our machine learning model's architecture depends on the occupied Wyckoff sites. The diversity of these occupied sites conditions the layering scheme within the model. Atoms occupying a particular Wyckoff site were modeled with the architecture and learning parameters linked to the respective layer. To illustrate our method, we developed an interatomic potential for atomic interactions in α-alumina. For training purposes, we generated the samples through quantum mechanical computations. The evaluation of the learned interatomic potential involved conducting molecular dynamics calculations on a 2 × 2 × 2 supercell, yielding formation energies per atom deviating by less than 1.0 meV from the quantum mechanics results. The methodology described here paves the way for further innovations, potentially ushering in the creation of interatomic potentials that can be utilized for more than one material. Moreover, this approach provides valuable insights into the feasibility of substituting atoms within a compound by focusing exclusively on the specific Wyckoff sites that they occupy.

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“…Thin self-supporting ceramic tapes with the thickness in the range from tens to hundreds of microns are used in many industrial applications (ceramic barrier layers [1][2][3][4], sensors [5][6][7], and flexible substrates [8,9]). Due to the subtle thickness of ceramic tapes, it is possible to reach an unusually high strength of ceramic tapes and even their substantial elastic deformations [8,9].…”

Section: Introductionmentioning

confidence: 99%

Thin high-strength zirconia tapes with extreme flexibility

Šťastný

Chlup

Roupcová

et al. 2021

Journal of Asian Ceramic Societies

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The yttria stabilized zirconia ceramics (Y-TZP) are known for their high fracture toughness and high strength. Due to their excellent mechanical properties, the thin zirconia tapes can possess extraordinary behavior -extreme flexibility. In the present work, we introduce an adaptation of gel-tape casting method for the preparation of thin, high-strength zirconia tapes from waterbased suspensions. Fine ceramic powder with a particle size of around 100 nm was used. The negative effect of sodium ions on the strength and toughness of sintered ceramic samples was revealed and explained. Ceramic tapes with a thickness of 190 µm with as-sintered surfaces reached a characteristic biaxial strength of 1805 MPa. The huge elastic deformation of ceramic tapes was demonstrated in a 3-point bend test, and a bending radius of 25 mm for a 75 µm thick tape was reached.

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Electrical properties of alumina-based ceramic barrier layers for dielectric barrier discharge

Cited by 11 publications

References 22 publications

Robust current peak detection method for dielectric barrier discharges

Robust current peak detection method for dielectric barrier discharges

Utilizing Wyckoff Sites to Construct Machine-Learning-Driven Interatomic Potentials for Crystalline Materials: A Case Study on α-Alumina

Thin high-strength zirconia tapes with extreme flexibility

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