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- MakaleAçık Erişim2021Scopus SJRQ2Dielectric characteristics and electrical conductivity behavior of graphene/Al2O3/p-type silicon structure
Kaymak, Nuriye; Oz Orhan, Elif; Bayram, Ozkan; Bilge Ocak, Sema
Graphene nanosheets (Gns) obtained by the chemical vapor deposition (CVD) method have been employed for the fabrication of Graphene/Al2O3/p-type silicon (Si) structure. The Raman, scanning-electron-microscopy (SEM) and transmission-electron-microscopy (TEM) have been used to analyze the morphology and structural features of the graphene nanosheet. The dielectric features and electrical-conductivity of Graphene/Al2O3/p-type Si have been studied in the frequency range 10 kHz–400 kHz and in the voltage range, −4 V to +4 V at 300 K. The obtained experimental outcomes imply that electrical conductivity and dielectric features of Graphene/Al2O3/p-type Si were found out to be powerful functions of frequency and applied bias voltage. It can be seen that almost all of the interface states between metal and silicon contribute to modify of dielectric features of Graphene/Al2O3/p-type Si structure.
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İncele - MakaleYalnız künye2019Scopus SJRQ4Quality evaluation and pollen profile of honey samples from different locations
Bayram, Nesrin Ecem
In this study, it is aimed to determine some physicochemical properties and pollen types of honey samples collected from different regions. Pollen profile, moisture content, HMF, proline, frutose/glucose and electrical conductivity were the parameters analysed in each honey sample. According to the results obtained, all honey samples obtained from different geographic origins were found to be consistent, in terms of the parameters analyzed, with the values given in the Turkish Food Codex Honey Communiqué (2012). It was found that only one honey sample did not comply with the values given in the codex in terms of frutose/glucose ratio. As a result of the melissopalynological experiment, three honey samples were found to be unifloral (two Castanea sativa and one Astragalus spp.) and the others were found to be polyfloral honey. The results obtained indicate that physicochemical properties of the honey samples produced at different points in Turkey differ greatly in accordance with the diversity of the flora of the region.
AtıfScopus7WoS5OpenAlex2İncele