Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Georgi B. Hadjichristov"'
Publikováno v:
ACS Omega, Vol 9, Iss 4, Pp 4144-4161 (2024)
Externí odkaz:
https://doaj.org/article/41511102c08b44258d886dff9482ce6b
Autor:
Georgi B. Hadjichristov, Daniela G. Kovacheva, Yordan G. Marinov, Daniela B. Karashanova, Todor E. Vlakhov, Nicola Scaramuzza
Publikováno v:
Journal of Advanced Dielectrics, Vol 14, Iss 01 (2024)
We studied the effect of titanium dioxide (TiO2) nanoparticles (NPs) on dielectric behavior of Na[Formula: see text] ion-conducting salt-complexed polymer nanocomposite system formed from a binary polymer blend of poly(ethylene oxide) (PEO) and polyv
Externí odkaz:
https://doaj.org/article/a70f1b5e759b4bb1a25f84b871275d67
Autor:
George R. Ivanov, Tony Venelinov, Yordan G. Marinov, Georgi B. Hadjichristov, Andreas Terfort, Melinda David, Monica Florescu, Selcan Karakuş
Publikováno v:
Chemosensors, Vol 12, Iss 7, p 116 (2024)
Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are pollutants of concern due to their long-term persistence in the environment and human health effects. Among them, perfluorooctane sulfonic acid (PFOS) is very ubiquitous and dangerous for healt
Externí odkaz:
https://doaj.org/article/bb09881513bb4bac818edc7fe97466e0
Autor:
Georgi B. Hadjichristov
Publikováno v:
Photonics, Vol 11, Iss 4, p 384 (2024)
The influence of the interference between coherent processes in third-order nonlinear Raman scattering on the spectral shapes of Raman-scattered light waves is numerically modeled and discussed in the cases of commonly used coherent Raman spectroscop
Externí odkaz:
https://doaj.org/article/123fe702f07f4afdbcda6acb55129664
Autor:
Georgi B. Hadjichristov
Publikováno v:
Materials, Vol 16, Iss 17, p 6014 (2023)
This work addresses the achievement of efficient control of laser light transmission through stationary microperiodic parallel stripe textures formed in films of nematic liquid crystals (NLCs) in planar-oriented cells upon a direct-current (DC) elect
Externí odkaz:
https://doaj.org/article/c80fcdb96e9d4598ba2a24ca5ce5a328
Publikováno v:
Polymers, Vol 13, Iss 24, p 4465 (2021)
Complex electrical impedance and dielectric spectroscopy were applied to study the dielectric relaxations and their thermal behavior in ion-conducting composites/complexes from polymer poly(ethylene oxide) (PEO) and E8 nematic liquid crystals (LCs),
Externí odkaz:
https://doaj.org/article/6b7905a4cbf64bc9bd008238451a75f7
Autor:
Yordan G. Marinov, Hari Krishna Koduru, S. Kaleemulla, Nicola Scaramuzza, Georgi B. Hadjichristov, Peter M. Rafailov
Publikováno v:
Journal of Solid State Electrochemistry. 25:2409-2428
Flexible and free-standing electrolyte membranes of nanocomposite ‘poly(ethylene oxide) (PEO)/starch-nanocrystals (SNCs)’ complexed with magnesium bromide (MgBr2) salt at various concentrations (5, 10, 15, 20, and 25 WT.%) were prepared using con
Autor:
V. D. Shigorin, Alexander G. Petrov, I. A. Maslyanitsyn, M. Dencheva-Zarkova, L. Popova, Georgi B. Hadjichristov, Sofia I. Torgova, Yordan G. Marinov
Publikováno v:
Physics of Wave Phenomena. 28:250-254
The influence of the geometry of a cell with side electrodes and the parameters of applied pulsed-periodic voltage on the director orientation in nematic liquid crystal 5CB is analyzed. It is shown that the two-dimensional model of director motion ta
Publikováno v:
2021 XXX International Scientific Conference Electronics (ET).
We studied a tris(keto-hydrozone) discotic liquid crystal (DLC) and its nanocomposite with single-walled carbon nanotubes (SWCNTs, mean diameter 1.5 nm) at concentration 1 wt.%. The undoped DLC and the DLC nanocomposite were characterized with differ