Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Peter Kopčanský"'
Autor:
Peter Bury, Marek Veveričík, František Černobila, Natália Tomašovičová, Veronika Lacková, Katarína Kónyová, Ivo Šafařík, Viktor Petrenko, Oleksandr Tomchuk, Milan Timko, Peter Kopčanský
Publikováno v:
Crystals, Vol 14, Iss 3, p 202 (2024)
A study of the role of diamond nanoparticles on 5CB liquid crystal composites with Fe3O4 nanoparticles is presented. Composite ferronematic systems based on the nematic liquid crystal 5CB doped with Fe3O4 magnetic nanoparticles and additionally bound
Externí odkaz:
https://doaj.org/article/8ef1928e466a4f118ed1aacaf6530e43
Autor:
Peter Bury, Marek Veveričík, František Černobila, Natália Tomašovičová, Veronika Lacková, Katarína Zakutanská, Milan Timko, Peter Kopčanský
Publikováno v:
Nanomaterials, Vol 13, Iss 23, p 2987 (2023)
A study on 5CB liquid crystal composites with SiO2 nanoparticles and an additional commixture with Fe3O4 nanoparticles using light transmission and SAW measurements is presented. The prepared liquid crystal composites exhibited an interesting memory
Externí odkaz:
https://doaj.org/article/527a3dcf404747498042a6c0bdc454c5
Autor:
Peter Bury, Marek Veveričík, František Černobila, Natália Tomašovičová, Milan Timko, Peter Kopčanský, Filippo Agresti, Simona Barison
Publikováno v:
Crystals, Vol 13, Iss 2, p 162 (2023)
A composite ferronematic system based on the nematic liquid crystal E7, doped with lath-like goethite magnetic nanoparticles of volume concentrations 10−3, 5 × 10−4, and 10−5, was investigated. Both surface acoustic waves (SAWs) and the magnet
Externí odkaz:
https://doaj.org/article/38d107e427e1418886af34750cad084b
Autor:
Veronika Lacková, Martin A. Schroer, Dirk Honecker, Martin Hähsler, Hana Vargová, Katarína Zakutanská, Silke Behrens, Jozef Kováč, Dmitri I. Svergun, Peter Kopčanský, Natália Tomašovičová
Publikováno v:
iScience, Vol 24, Iss 12, Pp 103493- (2021)
Summary: Clustering of magnetic nanoparticles can dramatically change their collective magnetic properties, and it consequently may influence their performance in biomedical and technological applications. Owing to tailored surface modification of ma
Externí odkaz:
https://doaj.org/article/e76d783594f948749bd5f51ee30fb3ba
Autor:
Peter Bury, Marek Veveričík, František Černobila, Natália Tomašovičová, Katarína Zakuťanská, Peter Kopčanský, Milan Timko, Markéta Jarošová
Publikováno v:
Nanomaterials, Vol 12, Iss 14, p 2463 (2022)
The effect of magnetic nanoparticles size and concentration on nematic liquid crystal (NLC) behavior in a magnetic field was investigated. The magneto-optical investigation using measurements of the light transmission through the liquid crystal was u
Externí odkaz:
https://doaj.org/article/bfd22400f01f42e88f17362733369240
Autor:
Lucia Balejčíková, Karel Saksl, Jozef Kováč, Anne Martel, Vasil M. Garamus, Mikhail V. Avdeev, Viktor I. Petrenko, László Almásy, Peter Kopčanský
Publikováno v:
Molecules, Vol 26, Iss 22, p 6960 (2021)
Ferritin, a spherically shaped protein complex, is responsible for iron storage in bacteria, plants, animals, and humans. Various ferritin iron core compositions in organisms are associated with specific living requirements, health state, and differe
Externí odkaz:
https://doaj.org/article/14fd86fc1fa74d149209f302da826dc5
Autor:
Peter Bury, Marek Veveričík, František Černobila, Matúš Molčan, Katarína Zakuťanská, Peter Kopčanský, Milan Timko
Publikováno v:
Nanomaterials, Vol 11, Iss 10, p 2643 (2021)
The effect of the liquid crystalline host on structural changes in magnetosomes based on ferronematics is studied using the surface acoustic wave (SAW) technique supported by some capacitance and light transmission measurements. The measurement of th
Externí odkaz:
https://doaj.org/article/0b1bd7ceee934f02a7a229e2c67ce90e
Publikováno v:
Materials, Vol 14, Iss 11, p 3096 (2021)
In this paper, results acquired from capacitance measurements performed on composites based on nematic liquid crystal 4-cyano-4′-hexylbiphenyl (6CB) and spherical iron oxide nanoparticles of various sizes are presented. Electric and magnetic Fréed
Externí odkaz:
https://doaj.org/article/17ce09c04bc9495992f15a88c3278481
Autor:
Natália Tomašovičová, Jozef Kováč, Veronika Gdovinová, Nándor Éber, Tibor Tóth-Katona, Jan Jadżyn, Peter Kopčanský
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 8, Iss 1, Pp 2515-2520 (2017)
We report on experimental studies focusing on the dynamic ac magnetic susceptibility of a ferronematic. It has been shown recently, that in the isotropic phase of a ferronematic, a weak dc bias magnetic field of a few oersteds increases the ac magnet
Externí odkaz:
https://doaj.org/article/35e6ca2f9c174ab9877d823b85b6698a
Autor:
Peter Bury, Marek Veveričík, Peter Kopčanský, Milan Timko, Ihor P. Studenyak, Artem I. Pogodin
Publikováno v:
Crystals, Vol 11, Iss 4, p 413 (2021)
The effect of two types of superionic nanoparticles; Cu7GeS5I and Ag7GeS5I, respectively on nematic liquid crystal (6CB) behavior under an external electric field is investigated. The response of both attenuation of surface acoustic waves propagating
Externí odkaz:
https://doaj.org/article/caaa1877997346f6ae75597222299625