Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Teodor Milenov"'
Autor:
Teodor Milenov, Dimitar Trifonov, Dobromir A. Kalchevski, Stefan Kolev, Ivalina Avramova, Stoyan Russev, Kaloyan Genkov, Georgi Avdeev, Dimitar Dimov, Desislava M. Karaivanova, Evgenia Valcheva
Publikováno v:
Materials, Vol 16, Iss 22, p 7190 (2023)
Different nano-sized phases were synthesized using chemical vapor deposition (CVD) processes. The deposition took place on {001} Si substrates at about 1150–1160 °C. The carbon source was thermally decomposed acetone (CH3)2CO in a main gas flow of
Externí odkaz:
https://doaj.org/article/0a93044c106d4a49b66d1bec683fe96a
Autor:
Ivalina Avramova, Dimitar A. Dimov, Nadya Stankova, Miroslav Petrov, Desislava Karaivanova, Georgi Avdeev, Stoyan Russev, Daniela Karashanova, Biliana Georgieva, Evgeniya Valcheva, Teodor Milenov
Publikováno v:
Materials, Vol 15, Iss 22, p 7870 (2022)
The present study investigates the possibility of obtaining graphene-like phases (defected graphene, graphene oxide, and reduced graphene oxide) as fine suspensions by applying a novel pulsed laser ablation (PLA) approach in flow mode. Two types of s
Externí odkaz:
https://doaj.org/article/f0e951d9ca884ee2999d7c3c32d80d4b
Autor:
D. Karaivanova, Teodor Milenov, A.S. Nikolov, Daniela Karashanova, G. V. Avdeev, Ivalina Avramova, N.E. Stankova, Evgenia Valcheva, D. Dimov, B. Georgieva
The aim of our work was to obtain graphene-like phases (defected graphene, graphene oxide and reduced graphene oxide) as fine suspensions by applying pulsed laser ablation (PLA) to microcrystalline graphite suspension in water medium. The fundamental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fccf0a7984768fc015de5f9a883d172f
Publikováno v:
The Journal of Physical Chemistry C. 123:21448-21456
In the present article, graphene complexes with out-of-plane organic substances such as a triphenylmethyl radical, anion, and cation are studied. Comparison is made with the similar closed-shell mo...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da25bd1fe1867934c9feb1474ed6da2c
https://doi.org/10.1021/acs.jpcc.9b03550
https://doi.org/10.1021/acs.jpcc.9b03550
Autor:
B. Georgieva, K. Kirilov, S. Kolev, Ivalina Avramova, B. Arnaudov, Teodor Milenov, Georgi Avdeev, P. Terziyska, A. Dikovska, Daniela Karashanova, Evgenia Valcheva
Publikováno v:
Applied Surface Science. 480:323-329
Pulsed laser deposition (PLD) of thin carbon films on SiO2/Si substrates was performed and the resulting films were examined by X-ray photoelectron spectroscopy, transmission electron microscopy (TEM), Raman spectroscopy and ellipsometry. The deposit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50e2428ba054f8b676212eaf5dd31269
https://doi.org/10.1016/j.apsusc.2019.02.220
https://doi.org/10.1016/j.apsusc.2019.02.220
Autor:
Stoyan C. Russev, L Lakov, I Balchev, M Aleksandrova, G. V. Avdeev, Teodor Milenov, T Nurgaliev, I. Kostadinov, Evgenia Valcheva, K. Genkov
Using RF magnetron sputtering, we deposited Bi12TiO20 (BTO) thin films on various substrates (glass, quartz, stainless steel (SS304), (001) and (111) Si and sital-ceramics, Al and Cu foils). The films had a constant thickness of 1.3 μm. The as-depos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bb61d0b6e40a00fd05044fa483b5c27
Autor:
Ivalina Avramova, Evgenia Valcheva, P. Terziyska, D. Karaivanova, Teodor Milenov, Daniela Karashanova, S. Kolev, Victor Atanasov, A. Dikovska, B. Georgieva, D. Dimov
The study aims to explore the effect of low fluence UV-C radiation on the structural quality of thin carbon films. We have modified single to few-layered nano-sized graphene-like films deposited by pulsed laser deposition (PLD) on ~300 nm SiO2/Si sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31e16dffdc90424ccce577e0f56be3c8
In the present work, the surface chemistry of reduced graphene oxide, modified with hydrocarbon, hydroxyl, aldehyde and carboxyl groups is studied by means of computational chemistry. The simulations by ab-initio molecular dynamics show that the reac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a420b43659ce739653c7e426188ee0d
Publikováno v:
Journal of Alloys and Compounds. 725:433-440
The optical properties of monoclinic Ag2Te crystals are studied in a wide range (3.7 meV–6.2 eV) of photon energies. The measured reflectivity spectra from THz to UV allow unambiguous a photon energy-dependent complex dielectric function, complex r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42099fefcc0fce37457434d8f4681054
https://doi.org/10.1016/j.jallcom.2017.07.153
https://doi.org/10.1016/j.jallcom.2017.07.153
Autor:
T. D. Dudkina, Peter M. Rafailov, G. V. Avdeev, A. V. Egorysheva, Teodor Milenov, O. M. Gaitko
Publikováno v:
Russian Journal of Inorganic Chemistry. 62:960-963
Optical and vibrational spectra of Bi1.8Fe1.2(1 – x)Ga1.2x SbO7 solid solutions with pyrochlore structure have been studied. It has been shown that the compounds have strongly disordered structure. It has been established that a decrease in iron co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::083b03bb46aa9d0b17fdea42ea548a98
https://doi.org/10.1134/s0036023617070063
https://doi.org/10.1134/s0036023617070063