Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Ivan Gregora"'
Autor:
Marie Krečmarová, Daniel Andres-Penares, Ladislav Fekete, Petr Ashcheulov, Alejandro Molina-Sánchez, Rodolfo Canet-Albiach, Ivan Gregora, Vincent Mortet, Juan P. Martínez-Pastor, Juan F. Sánchez-Royo
Publikováno v:
Nanomaterials, Vol 9, Iss 7, p 1047 (2019)
The successful integration of few-layer thick hexagonal boron nitride (hBN) into devices based on two-dimensional materials requires fast and non-destructive techniques to quantify their thickness. Optical contrast methods and Raman spectroscopy have
Externí odkaz:
https://doaj.org/article/c5d24c47e8584cc38d5e753b516b0e88
Autor:
Dmitry Nuzhnyy, Přemysl Vaněk, Jan Petzelt, Viktor Bovtun, Martin Kempa, Ivan Gregora, Maxim Savinov, Radmila Krupková, Václav Studnička, Josef Buršík, Mihail I. Samoylovich, Wilfried Schranz
Publikováno v:
Processing and Application of Ceramics, Vol 4, Iss 3, Pp 215-223 (2010)
Using the sol-gel technique, BaTiO3 was embedded into nanoporous Vycor and artificial vitreous opal silica for the first time. About 50 vol% of the pores was filled. In case of the Vycor glass (pore diameter 4–6 nm) only amorphous phase was reveale
Externí odkaz:
https://doaj.org/article/cb802338ed114c2aab7661dd10c823fa
Autor:
Z. Gedeonova, Vincent Mortet, Ivan Gregora, Petr Ashcheulov, Pavel Hubík, N. Lambert, Andrew Taylor
Publikováno v:
Carbon. 168:319-327
Although Raman spectroscopy is a good tool for effective assessment of atomic boron concentration in diamond, determination of further physical properties using this non-destructive approach requires advancement in Raman analysis. In this work, we pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69a6b96c25168c62f94d48ac4ea01f90
https://doi.org/10.1016/j.carbon.2020.06.075
https://doi.org/10.1016/j.carbon.2020.06.075
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-8 (2019)
Scientific Reports
Scientific Reports
The paper proposes a fully optical method for determination of a cubic crystal grain orientation in a sample inspected by a Raman microscope. The method is based on a universal and strong polarisation anisotropy of the Raman scattering by doubly dege
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87a5f8813819113e8bb770f3a2be9095
http://link.springer.com/article/10.1038/s41598-019-45782-z
http://link.springer.com/article/10.1038/s41598-019-45782-z
Autor:
Alejandro Molina-Sanchez, Juan F. Sánchez-Royo, Vincent Mortet, Marie Krečmarová, Rodolfo Canet-Albiach, Ladislav Fekete, Petr Ashcheulov, Daniel Andres-Penares, Juan P. Martínez-Pastor, Ivan Gregora
Publikováno v:
Nanomaterials, Vol 9, Iss 7, p 1047 (2019)
Nanomaterials
Volume 9
Issue 7
Nanomaterials
Volume 9
Issue 7
The successful integration of few-layer thick hexagonal boron nitride (hBN) into devices based on two-dimensional materials requires fast and non-destructive techniques to quantify their thickness. Optical contrast methods and Raman spectroscopy have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05474b01ae96f77fc9cb9ac0dd50ea82
https://www.mdpi.com/2079-4991/9/7/1047
https://www.mdpi.com/2079-4991/9/7/1047
Autor:
Pam A. Thomas, E. Simon, Samuel Margueron, A. M. Glazer, Ivan Gregora, Ausrine Bartasyte, Steven Huband
Publikováno v:
Physical Review B. 99
The wave numbers and efficiencies of the first-order lattice vibrational modes of the isomorphous solid solutions of $\mathrm{LiNb}{\mathrm{O}}_{3}\text{\ensuremath{-}}\mathrm{LiTa}{\mathrm{O}}_{3}$ have been studied by Raman and infrared spectroscop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13e08aa7bf7ebfaf1d5b8d76b2151b41
https://doi.org/10.1103/physrevb.99.094306
https://doi.org/10.1103/physrevb.99.094306
Publikováno v:
Phase Transitions. 89:816-822
The paper describes investigation of the electric-field-induced phase transition in PMN-xPT single crystals with x = 0.32 by means of detailed polarized Raman scattering measurements. Field-induced tetragonal state was reached by applying an electric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72d51d5031a75423384851b1db720752
https://doi.org/10.1080/01411594.2016.1207997
https://doi.org/10.1080/01411594.2016.1207997
Autor:
Jiri Stuchlik, Vincent Mortet, Grigoriy Krivyakin, Andrew Taylor, Zdenek Remes, Ivan Gregora, Vladimir A. Volodin, Petr Ashcheulov
Publikováno v:
physica status solidi (b). 257:1900247
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22983957198a1d7c302c3971c332fed6
https://doi.org/10.1002/pssb.201900247
https://doi.org/10.1002/pssb.201900247
Autor:
Kiyoung Lee, Libor Machala, Radek Zboril, Patrik Schmuki, Robin Kirchgeorg, Martin Cada, Ivan Gregora, J. Olejníček, Lei Wang, Stepan Kment, Zdenek Hubicka, Ning Liu
Publikováno v:
ACS Nano. 9:7113-7123
Hematite, α-Fe2O3, is considered as one of the most promising materials for sustainable hydrogen production via photoelectrochemical water splitting with a theoretical solar-to-hydrogen efficiency of 17%. However, the poor electrical conductivity of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::441b4526bde7a548606e557adf187eeb
https://doi.org/10.1021/acsnano.5b01740
https://doi.org/10.1021/acsnano.5b01740
Publikováno v:
Phase Transitions. 87:1080-1085
Polarized Raman scattering microscopy investigations of tetragonal single crystal of PFN-38PT allowed us to characterize the Raman signature of distinct ferroelastic domains. The analysis of the incident and scattered light polarization allowed us to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d26a19424c92f685a988ac492d0cca96
https://doi.org/10.1080/01411594.2014.953797
https://doi.org/10.1080/01411594.2014.953797