Yazar "Nevruzoğlu, Vagif" için listeleme
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Carbon microrod material derived from human hair and its electrochemical supercapacitor application
Bal Altuntaş, Derya; Aslan, Sema; Nevruzoğlu, Vagif (Gazi Üniversitesi, 2021)Here, Turkish human hair fibers were used as a carbon source at the synthesis of human hair-sourced activated carbons (HHC). During the synthesis of HHCs sodium carbonate (Na2CO3) was added to the synthesis process for an ... -
Cold substrate method to prepare plasmonic Ag nanoparticle: deposition, characterization, application in solar cell
Nevruzoğlu, Vagif; Bal Altuntaş, Derya; Tomakin, Murat (Springer Heidelberg, 2020)In this study, the surface plasmon effects of the Ag nanoparticle were investigated depending on the substrate temperature and coating time. Deposition procedure for the Ag coating was the vacuum deposition at low substrate ... -
Deposition and characterization of the Ag nanoparticles on absorbable surgical sutures at the cryogenic temperatures
Altuntaş, Mehmet; Beriş, Fatih Şaban; Nevruzoğlu, Vagif; Karan, Yasin; Kanat, Ayhan; Tomakin, Murat (Springer Heidelberg, 2023)Surgical sutures are one of the most widely used medical devices for wound closure. In the meantime, the suture surface and area may be exposed to many microorganisms, and surgical site infections may develop in these ... -
Effects of Na doping on CdS thin films and n-CdS/p-Si solar cells via chemical bath deposition method
Nevruzoğlu, Vagif; Tomakin, Murat; Keskenler, Eyüp Fahri; Öztürk, Göktürk (Korean Assoc Crystal Growth, Inc, 2017)Un-doped and Na doped CdS thin films were deposited by chemical bath deposition method. the effects of Na doping on structural, optical and electrical properties of CdS thin films and n-CdS/p-Si heterojunction were ... -
Enhancing label-free biosensing with cryogenic temperature-induced plasmonic structures
Nevruzoğlu, Vagif; Tomakin, Murat; Manir, Melih; Demir, Selçuk; Beriş, Fatih Şaban; Çetin, Arif E. (Springer, 2023)Plasmonic nanoparticles exhibit distinct nearfield properties that offer potential advantages for label-free biosensing applications. By generating strong interactions between light and matter, these nanoparticles can be ... -
Evaluation of waste human hair as graphene oxide and examination of some characteristic properties
Bal Altuntaş, Derya; Nevruzoğlu, Vagif (TUBITAK, 2020)In this study, graphene oxide was synthesized from activated carbon obtained from waste hair for the first time using Modified Hummers method. the Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy ... -
Fabrication and characterization of Au/n-ZnO/p-Si/Al sandwich device with Sol-gel spin coating method
Keskenler, Eyüp Fahri; Keskenler, Mustafa Furkan; Tomakin, Murat; Nevruzoğlu, Vagif (Springer, 2019)ZnO thin films with the n-type properties were obtained on the p-Si substrates for multi-layered sandwich device depositing by sol-gel method. Au and Al were conducted on two side of hetero-junction by PVD technique. From ... -
Fabrication of gold thin films on cooled glass substrates
Manir, Melih; Genç, Gamze; Nevruzoğlu, Vagif; Tomakin, Murat; Çetin, Arif E. (Springer, 2024)In this article, gold (Au) thin films were fabricated on glass substrates under vacuum conditions (4.5 x 10(-6) Torr) within a temperature range of 100-300 K, incrementing in steps of 50 K. Analyses through Field Emission ... -
Improving the stability of solar cells using metal-organic frameworks
Nevruzoğlu, Vagif; Demir, Selçuk; Karaca, Gökçehan; Tomakin, Murat; Bilgin, Nuray; Yılmaz, Fatih (Royal Soc Chemistry, 2016)Although Cu2S-containing chalcogenide solar cells are appealing and cost-effective for photovoltaics (PVs), these materials suffer from rapid performance degradation as a result of the diffusion of copper ions into the CdS ... -
Influence of thermal annealing on the Band-Gap of tio2 thin films produced by the Sol-Gel method
In our study, we used the spin coating method to produce TiO2 thin films on quartz glass using a solution with a concentration of 0.5M. After the coating process, the samples were dried in air at 100°C. Subsequently, ... -
Investigation and mapping of natural and artificial radioactivity in sediment samples from Borcka Black Lake, Artvin-Turkey
Dizman, Serdar; Akdemir, Tolga; Yeşilkanat, Cafer Mert; Nevruzoğlu, Vagif; Bal, Esra; Keser, Recep (Taylor & Francis Ltd., 2022)All living creatures in nature are constantly exposed to ionising radiation, which is emitted from natural and artificial radiation sources. For this reason, it is important to monitor the levels of radioactivity in living ... -
Investigation of Cd1-xCoxS diluted magnetic semiconductor thin films fabricated by chemical bath deposition method
Tomakin, Murat; Öncel, Yılmaz; Keskenler, Eyüp Fahri; Nevruzoğlu, Vagif; Onuk, Zuhal; Görür, Osman (Elsevier Science Sa, 2014)Chemical bath deposition method was used for preparation of Cd1-xCoxS thin films. the effects of Co doping and thermal annealing on structural, optical, electrical and magnetic properties of CdS thin films were investigated. ... -
The investigation of stability of n-CdS/p-Cu2S solar cells prepared by cold substrate method
Manir, Melih; Nevruzoğlu, Vagif; Tomakin, Murat (IOP Publishing, 2021)In this study, two different n-CdS/p-Cu2S solar cells were prepared by evaporating Cu at different substrate temperatures (200 K and 300 K) by vacuum evaporation method on a single crystal CdS semiconductor. Field emission ... -
Investigation of the electrical properties of Ag/n-Si schottky diode obtained by two different methods
Nevruzoğlu, Vagif; Manir, Melih; Öztürk, Gizem (Korean Assoc Crystal Growth, Inc, 2020)In present study, Ag/n-Si Schottky diodes were produced by vacuum evaporation method at two different substrate temperatures (200 K and 300 K) and structural, optical, electrical properties were investigated. X-ray diffraction ... -
Magneto-impedance in Co35Fe65/Cu/Co35Fe65 single and Bi-layer thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Nevruzoğlu, Vagif (Korean Inst Metals Materials, 2020)The magneto-impedance response in Co35Fe65/Cu/Co35Fe65 thin film magneto-impedance cells deposited by the thermal evaporation method has been studied with single and bilayer structures at the substrate temperature 300 K ... -
Metal-organic frameworks (MOFs) as an anti-reflective coating for crystalline silicon solar cells
Kanmaz, İmran; Demir, Selçuk; Kıztanır, Gamze; Tomakin, Murat; Nevruzoğlu, Vagif (Springer, 2024)Enhancing the performance of the solar cells is a very challenging task and to prevent surface reflections of solar rays is one of the ways. Metal-organic frameworks (MOFs) are novel inorganic-organic crystalline porous ... -
Radiometric mapping and radiation dose assessments in sediments from Savsat Black Lake, Turkey
Dizman, Serdar; Akdemir, Tolga; Yeşilkanat, Cafer Mert; Nevruzoğlu, Vagif; Bal, Esra; Keser, Recep (Springer, 2022)In this study, natural and artificial radioactivity concentrations in sediment samples taken from Savsat Black Lake located on the Nature Park in Artvin were determined using a high purity germanium detector. It was ... -
Role of low substrate temperature deposition on Co-Fe thin films
Yüzüak, Gizem Durak; Yüzüak, Ercüment; Nevruzoğlu, Vagif; Dinçer, İlker (Springer Heidelberg, 2019)This paper presents the role of the conventional and Soliton wave model deposition at low substrate temperature (300-100 K) on the structural, electric and magnetic properties of Co35Fe65 thin films deposited by thermal ... -
Synthesis and characterization of activated carbon produced from waste human hair mass using chemical activation
Bal Altuntaş, Derya; Nevruzoğlu, Vagif; Dokumacı, Meryem; Cam, Şafak (Springer Japan Kk, 2020)In this study, hair waste was converted into active carbon for the first time and its characteristics were analyzed. As chemical activation tool, zinc chloride (ZnCl2) was impregnated and then carbonized under different ... -
Synthesis of new carbon material produced from human hair and its evaluation as electrochemical supercapacitor
Altuntaş, Derya Bal; Aslan, Sema; Akyol, Yeşim; Nevruzoğlu, Vagif (Taylor & Francis Inc, 2020)In this study, carbon material similar to graphene structure (GLS) was prepared from graphite and the carbonization of Turkish human hair fibers (HHC) and utilized for the modification of electrode to evaluate the ...
