Výsledky vyhledávání - "Vaclav Ocelik"

Morphology of Melt-Quenched Lead Telluride Single Crystals

Autor: Graeme R. Blake, Jacob Baas, Hong Lian, Vaclav Ocelik

Publikováno v: ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces, 13(5), 6241-6248. AMER CHEMICAL SOC

Metastable single crystals of nonstoichiometric Pb1-xTe are obtained by rapid cooling from the melt. The composition and crystallographic morphology are studied using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectrosco

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad63a30175a2f9bba16825dd24fb4efe
https://hdl.handle.net/11370/4ed90f96-c611-4c6f-a149-2d4b5d25b0aa

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Controlling phase separation in thermoelectric Pb1−xGexTe to minimize thermal conductivity

Autor: Vaclav Ocelik, Hong Lian, Jacob Baas, Graeme R. Blake, Jamo Momand, Anil Kumar, Bart J. Kooi

Publikováno v: Journal of Materials Chemistry A, 9(20), 12340-12349. ROYAL SOC CHEMISTRY

Intensive studies have been carried out over the past decade to identify nanostructured thermoelectric materials that allow the efficient conversion of waste heat to electrical power. However, less attention has been paid to the stability of such mat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f6bfe825f5b23e6006e132e3cbc7a03
https://doi.org/10.1039/d1ta01788h

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Depth Profile Analysis of Thin Oxide Layers on Polycrystalline Fe–Cr

Autor: Tomáš Šamořil, Hana Tesařová, Jeff Th. M. De Hosson, Vaclav Ocelik, Gerrit S Zijlstra

Publikováno v: Microscopy and Microanalysis, 26(1), 112-119. Cambridge University Press

Surfaces of polycrystalline ferritic Fe–Cr steel with grain sizes of about 13 µm in diameter were investigated with surface sensitive techniques. Thin oxide layers, with a maximum thickness of about 100 nm, were grown by oxidation in air at temper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31d7c952fb22bf74fc787bc585c51987
https://doi.org/10.1017/s1431927619015319

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Spherulitic and rotational crystal growth of Quartz thin films

Autor: Silang Zhou, Vaclav Ocelik, Beatriz Noheda, Jordi Antoja-Lleonart, Nick R. Lutjes

Publikováno v: Scientific Reports, 11(1):14888. Nature Publishing Group
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)

To obtain crystalline thin films of alpha-Quartz represents a challenge due to the tendency for the material towards spherulitic growth. Thus, understanding the mechanisms that give rise to spherulitic growth can help regulate the growth process. Her

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05ca3200b9d5f84abc078437c91189ed
https://research.rug.nl/en/publications/c4bf72a4-dbd6-47c1-9e13-42ff17ef97e2

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Crystallization of GeO2 thin films into α-quartz: From spherulites to single crystals

Autor: Jordi Antoja-Lleonart, Silang Zhou, Pavan Nukala, Vaclav Ocelik, Nick R. Lutjes, Beatriz Noheda

Publikováno v: Acta Materialia, 215:117069. PERGAMON-ELSEVIER SCIENCE LTD

Piezoelectric quartz (SiO2) crystals are widely used in industry as oscillators. As a natural mineral, quartz and its relevant silicates are also of interest in geoscience and mineralogy. However, the nucleation and growth of quartz crystals are diff

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67dcf81ac0207767bec365366af77d68
https://research.rug.nl/en/publications/40c262f0-dcc7-4226-89a7-2b7f900a3285

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In Situ High-Temperature EBSD and 3D Phase Field Studies of the Austenite-Ferrite Transformation in a Medium Mn Steel

Autor: Hussein Farahani, M.G. Mecozzi, Jeff Th. M. De Hosson, Sybrand van der Zwaag, Vaclav Ocelik, Gerrit S Zijlstra

Publikováno v: Microscopy and Microanalysis, 25(3)
Microscopy and Microanalysis, 25(3), 639-655. Cambridge University Press

In this research, in situ high-temperature electron backscattered diffraction (EBSD) mapping is applied to record and analyze the migration of the α/γ interfaces during cyclic austenite–ferrite phase transformations in a medium manganese steel. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e92fa546568267ea5f13763b49e341d0
https://doi.org/10.1017/S143192761900031X

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Growth and Crystallization of SiO2/GeO2 Thin Films on Si(100) Substrates

Autor: Guus Rijnders, Vaclav Ocelik, Jordi Antoja-Lleonart, Silang Zhou, Beatriz Noheda, Kit de Hond, Gertjan Koster

Publikováno v: Nanomaterials, Vol 11, Iss 1654, p 1654 (2021)
Nanomaterials
Volume 11
Issue 7
Nanomaterials, 11(7):1654. MDPI AG
Nanomaterials, 11(7):1654. Multidisciplinary Digital Publishing Institute (MDPI)

The growth of α-quartz-based piezoelectric thin films opens the door to higher-frequency electromechanical devices than those available through top-down approaches. We report on the growth of SiO2/GeO2 thin films by pulsed laser deposition and their

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d63d413adf9d20bbd3d66c4655c32c4f
https://www.mdpi.com/2079-4991/11/7/1654

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The effect of surface texture on the oxidation behaviour of polycrystalline Fe-Cr

Autor: J.T.M. de Hosson, L. T. H. de Jeer, Vaclav Ocelik, Gerrit S Zijlstra

Publikováno v: Applied Surface Science, 459, 459-467. ELSEVIER SCIENCE BV

Grain-direction dependent oxidation at the surface of polycrystalline Fe-Cr steel is not well understood, as most of the described systems in literature focus on single crystals of either Fe or Cr. We found through electron backscatter diffraction th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cfeca462407ff063a9e7ef3376582f4
https://research.rug.nl/en/publications/f1359f6b-0e06-45f5-9652-fe10c49e0128

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BCC-FCC interfacial effects on plasticity and strengthening mechanisms in high entropy alloys

Autor: Indranil Basu, Jeff Th. M. De Hosson, Vaclav Ocelik

Publikováno v: Acta Materialia, 157, 83-95. PERGAMON-ELSEVIER SCIENCE LTD

Al0.7CoCrFeNi high entropy alloy (HEA) with a microstructure comprising strain free face-centered cubic (FCC) grains and strongly deformed sub-structured body centered cubic (BCC) grains was subjected to correlative nanoindentation testing, orientati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3e947ea5f6595ae9f356e057bd7cb24
https://doi.org/10.1016/j.actamat.2018.07.031

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Size effects on plasticity in high-entropy alloys

Autor: Indranil Basu, Jeff Th. M. De Hosson, Vaclav Ocelik

Publikováno v: Journal of Materials Research. 33:3055-3076

The current review outlines the size-dependent plastic behavior of high-entropy alloys (HEAs) and the underlying deformation mechanisms. Particular focus is laid upon the influence of microstructural design on the small-scale deformation characterist

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb2667b32f3cc8d43704b7d6645f5c4f
https://doi.org/10.1557/jmr.2018.282

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