Zobrazeno 1 - 10
of 255
pro vyhledávání: '"E Valcheva"'
Autor:
E Valcheva, K Kirilov, N Bundaleska, A Dias, E Felizardo, M Abrashev, N Bundaleski, O M N D Teodoro, Th Strunskus, Zh Kiss’ovski, L L Alves, E Tatarova
Publikováno v:
Materials Research Express, Vol 10, Iss 2, p 025602 (2023)
In this paper, the electrical transport in free-standing graphene and N-graphene sheets fabricated by a microwave plasma-based method is addressed. Temperature–dependent resistivity/conductivity measurements are performed on the graphene/N-graphene
Externí odkaz:
https://doaj.org/article/286acd5865414dd1b3cfa34f157bee7f
Autor:
T. Milenov, P. Terziyska, G. Avdeev, D. Karashanova, B. Georgieva, I. Avramova, K. Genkov, E. Valcheva
Publikováno v:
Russian Journal of Inorganic Chemistry. 67:1509-1520
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb11ce198c4482e3148fcd32f311b1c2
https://doi.org/10.1134/s0036023622100333
https://doi.org/10.1134/s0036023622100333
Publikováno v:
Journal of Spectroscopy, Vol 2017 (2017)
We present here results on a Raman spectroscopic study of the deposited defected graphene on Si substrates by chemical vapor deposition (thermal decomposition of acetone). The graphene films are not deposited on the (001) Si substrate directly but on
Externí odkaz:
https://doaj.org/article/d4d0d709e5f940b2b5be716ec34ca6dd
Autor:
T Milenov, D Dimov, I Kostadinov, G Avdeev, S Russev, K Genkov, D Trifonov, A Zyapkov, K Ivanov, S Kolev, E Valcheva
Publikováno v:
Journal of Physics: Conference Series. 2487:012006
The effect of modification of Cabot Corporation SPHERON 5000 carbon black suspended in bi-distilled water by laser irradiation (CuBr2 laser with fundamental wavelength of λ = 511nm and 2 kHz repetition rate) has been studied. The carbon black suspen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51725f35ea0d63bccd9cfcfd5c6bf8a9
https://doi.org/10.1088/1742-6596/2487/1/012006
https://doi.org/10.1088/1742-6596/2487/1/012006
Publikováno v:
Journal of Physics: Conference Series. 2487:012009
It has recently been shown both theoretically and experimentally that a significant modification of the aC:H films is possible using UV irradiation even with a very low irradiation fluence. Some initial results on the modification of aC:H films with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1db7638d823dffcf2246d61c4483afd
https://doi.org/10.1088/1742-6596/2487/1/012009
https://doi.org/10.1088/1742-6596/2487/1/012009
Autor:
D A Dimov, N Stankova, D Karaivanova, D Karashanova, B Georgieva, I Avramova, M Petrov, E Valcheva, G Avdeev, K Ivanov, T Milenov
Publikováno v:
Journal of Physics: Conference Series. 2487:012010
Here we present experimental results on the modification of graphite suspensions in bi-distilled water by laser irradiation in a flow mode system. The fundamental wavelength of a Nd:YAG laser system (λ= 1064 nm) was used in our experiments. The morp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac5c720c967d506bbdb08336d74f7a35
https://doi.org/10.1088/1742-6596/2487/1/012010
https://doi.org/10.1088/1742-6596/2487/1/012010
Publikováno v:
Journal of Physics: Conference Series. 2487:012038
In this paper electrical transport studies are performed on thin carbon films deposited on SiO2/Si substrates by pulsed laser deposition (PLD) applying laser ablation of micro-crystalline graphite target. Experiments were carried out on 320 - 420 nm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc53e5a4e9143ad181ac57ef3af0b133
https://doi.org/10.1088/1742-6596/2487/1/012038
https://doi.org/10.1088/1742-6596/2487/1/012038
Akademický článek
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Autor:
E. Valcheva, S. Kolev, B. Georgieva, D. Karashanova, D. Dimov, D. Karaivanova, G. Avdeev, I Avramova, A. Dikovska, T. Milenov, P. Terziyska
We modified single- and few-layer nano-sized graphene films deposited by pulsed laser deposition (PLD) on ∼300-nm-thick SiO2/Si substrates. The samples were irradiated by a UVC lamp (wavelength of 254 nm) for 15 and 30 minutes in air atmosphere. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2769662716dd333964aeb1d7a0db5b49
Akademický článek
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