Özuğur Uysal, Bengü
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Özuğur Uysal, Bengü
B.,Özuğur Uysal
B. Özuğur Uysal
Bengü, Özuğur Uysal
Ozugur Uysal, Bengu
B.,Ozugur Uysal
B. Ozugur Uysal
Bengu, Ozugur Uysal
Uysal, Bengü Özuğur
Özuğur, B
Uysal, Bengü Özuğur
Uysal, Bengu Ozugur
Uysal, Bengü Özuğur
B.,Özuğur Uysal
B. Özuğur Uysal
Bengü, Özuğur Uysal
Ozugur Uysal, Bengu
B.,Ozugur Uysal
B. Ozugur Uysal
Bengu, Ozugur Uysal
Uysal, Bengü Özuğur
Özuğur, B
Uysal, Bengü Özuğur
Uysal, Bengu Ozugur
Uysal, Bengü Özuğur
Job Title
Dr. Öğr. Üyesi
Email Address
Main Affiliation
Molecular Biology and Genetics
Status
Former Staff
Website
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Sustainable Development Goals
4
QUALITY EDUCATION
0
Research Products
6
CLEAN WATER AND SANITATION
3
Research Products
10
REDUCED INEQUALITIES
0
Research Products
13
CLIMATE ACTION
0
Research Products
14
LIFE BELOW WATER
1
Research Products
2
ZERO HUNGER
0
Research Products
8
DECENT WORK AND ECONOMIC GROWTH
0
Research Products
12
RESPONSIBLE CONSUMPTION AND PRODUCTION
0
Research Products
9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
2
Research Products
17
PARTNERSHIPS FOR THE GOALS
0
Research Products
1
NO POVERTY
0
Research Products
11
SUSTAINABLE CITIES AND COMMUNITIES
0
Research Products
15
LIFE ON LAND
0
Research Products
3
GOOD HEALTH AND WELL-BEING
4
Research Products
7
AFFORDABLE AND CLEAN ENERGY
2
Research Products
5
GENDER EQUALITY
0
Research Products
16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
This researcher does not have a Scopus ID.
This researcher does not have a WoS ID.
Scholarly Output
30
Articles
23
Views / Downloads
107/0
Supervised MSc Theses
5
Supervised PhD Theses
1
WoS Citation Count
441
Scopus Citation Count
508
WoS h-index
8
Scopus h-index
8
Patents
0
Projects
0
WoS Citations per Publication
14.70
Scopus Citations per Publication
16.93
Open Access Source
16
Supervised Theses
6
| Journal | Count |
|---|---|
| Gels | 3 |
| Optik | 3 |
| Journal of Macromolecular Science, Part B | 2 |
| Turkish Journal of Physics | 2 |
| Biosensors-Basel | 1 |
Current Page: 1 / 4
Scopus Quartile Distribution
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30 results
Scholarly Output Search Results
Now showing 1 - 10 of 30
Article Citation - WoS: 35Citation - Scopus: 43Structural and Optical Properties of Sno2 Nano Films by Spin-Coating Method(Elsevier Science Bv, 2015) Uysal, Bengü Özuğur; Akkaya Arier, Ümit ÖzlemIn this work tin oxide (SnO2) nano films were deposited on glass substrates with different water content using the sol-gel spin-coating method. SnO2 is a wide band gap semiconductor and it belongs to the class of transparent conductive oxides (TCO). The influence of the water content and the heat treatment temperature on the structural and optical properties of the thin films is characterized by X-ray diffractometer (XRD) scanning electron microscope atomic force microscope ultraviolet visible spectrophotometer and spectrophotometer. Crystallite size of nano SnO2 films was controlled by SnCl2:water ratios. The most significant characteristic of nano materials is the increase in surface area as particle size decreases. XRD studies showed that the formation of tetragonal rutil phase was initiated at an annealing temperature close to 450 degrees C. The activation energy of nano SnO2 films for particle growth was calculated. The film has an activation energy of 42.8 kJ/mol and the optical band gap of 3.02-3.35 eV is proportional to the SnCl2:water ratio. The quantum size effect of nano particles was confirmed by the band gap energy shift using ultraviolet visible spectroscopy (UV-vis). SnO2 films have been considered as one of the most promising functional materials due to their wide direct band-gap and excellent electrical and optical properties. Those properties of SnO2 films allow them to be used in electronic and optoelectronic devices like gas sensors solar cells and lithium batteries etc. (C) 2015 Elsevier B.V. All rights reserved.Article Citation - WoS: 11Citation - Scopus: 11The Ws(2)dependence on the Elasticity and Optical Band Gap Energies of Swollen Paam Composites(Sage Publications, 2020) Evingür, Gülsen Akın; Sağlam, Nafia Alara; Çimen, Büşra; Uysal, Bengü Özuğur; Pekcan, ÖnderNew generation nano-filler polymer composites have many applications including biomedical, electronic and maritime related applications because of their mechanical, electronic and optical properties. The properties of composites were investigated as a function of nano-filler content. Among these, tungsten disulfide (WS2) has the potential to be used as a component in electronic devices owing to its high electron mobility and easily tunable optical band gap energy. Tungsten disulfide (WS2)- Polyacrylamide (PAAm) composite was prepared using free radical co-polymerization and wet laboratory methods with WS(2)content. Composites were characterized for mechanical and optical properties using an Elasticity Instrument and UV-vis Spectrophotometer, respectively. Elastic modulus was modeled by a statistical thermodynamics model. Tauc's and Urbach's Tail model for direct transition were used to model for the optical band gap. In this study, the swelling and WS(2)effect on the optical band gap and elasticity of WS2- PAAm composites were investigated. It was observed that the elasticity presented a reversed behavior of optical band gap energies with respect to WS(2)content. For the applications of nano-filler doped polymer composites in flexible electronic devices, WS(2)content strongly influences the mechanical and optical properties.Article Citation - WoS: 2Citation - Scopus: 13D self-assemble formation of molybdenum disulfide (MoS2)-doped polyacrylamide (PAAm) composite hydrogels(Tubitak Scientific & Technological Research Council Turkey, 2022) Durmaz, Sumeyye; Yildiz, Ekrem; Uysal, Bengu Ozugur; Pekcan, OnderPolyacrylamide (PAAm), a renowned member of the hydrogel class, has many uses throughout a wide range of industrial processes, including water absorbed diapers, contact lenses, wastewater treatment, biomedical applications such as drug delivery vehicles and tissue engineering because of its physical stability, durability, flexibility easier shaping, and so on. PAAm also provides new functionalities after the incorporation of inorganic structures such as molybdenum disulfide (MoS2). During the copolymerization process, the transmittance of all samples reduced significantly after a particular time, referred to as the gel point. Microgels form a tree above the gel point as projected by Flory-Stockmayer classical theory. Because of microgels positioned at the junction points of the Cayley tree, the addition of MoS2 results in strong intramolecular crosslinking and looser composites. Moreover, fractal geometry provides a quantitative measure of randomness and thus permits characterization of random systems such as polymers. Fractal dimension of these polymer composites is calculated from power-law-dependent scattered intensity. It was also confirmed that a hydrogel rapidly formed within a few seconds, indicating a 3D network formation inside the gel. These materials may have a great potential for application in wearable and implantable electronics due to this highly desired 3D self-assemble feature.Master Thesis Mos2'nin Tnbc Kanser İlaci Yükleme ve Salimina Yönelik Basit ve Yeni Peg K-carrajenan Hidrojel Üzerinde Etkisi(2023) Hassan, Gana Sherıf; Uysal, Bengü Özuğurİki boyutlu inorganik bir molekül olan molibden disülfür (MoS2), ayırt edici özellikleri nedeniyle son zamanlarda tıbbi araştırmalarda farmasötiklerin taşınması açısından incelenmiştir. Oluşturulacak biyobozunur bir polimer sistemi, MoS2 ilavesiyle kanser ilacı dağıtımında uygulanabilir. Bu yazıda MoS2 miktarının yeni jel karışımımızın özellikleri ve performansı üzerindeki etkisini araştırıyoruz. Üçlü negatif meme kanseri (TNBC) ilaç taşıyıcı sisteminde uyarana duyarlı polimerik hidrojel olarak taşıyıcı olarak kullanılma potansiyeline sahip olduğu düşünülen MoS2 katkılı polietilen glikol ile yeni bir jel karışımının hazırlanması amaçlandı. PEG)/k-karagenan kombinasyonunun ilk özelliklerinin verilmesi. Bu 2D malzeme, polimerik jelin normal MoS2 içermeyen yapısına kıyasla geçirgenlik, şişme ve elastikiyet performansını artırarak hidrojeli etkiledi. Polimer karışımı özellikleri esas olarak UV-VIS spektrofotometresi ve gravimetrik analiz kullanılarak test edildi. Bu jel karışımlarının çeşitli özellikleri beş farklı kütlede araştırıldı. 5 mg MoS2, yeni ve basit malzeme kombinasyonumuza MoS2 eklenmesinin hidrojel özelliklerinin iyileştirilmesiyle sonuçlandığını gösteren verilere göre esneklik açısından araştırılan en iyi örnekti. Araştırmanın sonuçları, kanser ilaçlarının kesin olarak hedeflenmiş ve düzenlenmiş dağıtımı için ilaç yükleme ve ilaç salma kinetiğine kadar genişletilebileceğini gösterdi. Yakın gelecekteki bu hedefe yönelik ön veriler oluşturmak amacıyla doksorubisin ilacının üretilen jele yüklenme ve salınma mekanizmaları incelendi. Anahtar Kelimeler – Molibden Disülfür, geçirgenlik, şişme, K-Karragenan, Polietilen GlikolMaster Thesis The Optical and Electrical Characteristics of Zno /Mos2 Transparent Oxide Composite Films(Kadir Has Üniversitesi, 2021) Al-Zubaidi, Shahad Tareq Radeef; Kirkil, Gökhan; Uysal, Bengü ÖzuğurOptoelektronikte saydam iletken oksit kullanımı, verimliliği düşürmeden veya maliyeti artırmadan esneklik, dayanıklılık ve taşınabilirlik becerisinin elde edildiği bir devrim yaratmaktadır. ZnO / MoS2 saydam iletken kompozit filmi basit bir süreç oluşu ve düşük maliyeti nedeniyle en önemli yöntem olarak kabul edilen sol-jel yöntemi ile üretilmiştir. ZnO / MoS2'nin kristal yapı özellikleri, X-Işını kırınım modeli (XRD) ile karakterize edilmiştir. XRD spektroskopisi ile, farklı miktarlarda MoS2 katkılı ZnO filminin kristal boyutu tayin edilmiştir. UV- görünür bölge absorpsiyon spektrometresi, filmin spektroskopik analizini gerçekleştirmek için kullanılmıştır. Absorpsiyon eğrisinin altındaki alan ve yarı maksimum absorbans verilerinin tam genişliği hesaplanmıştır. Bu değerle kullanılarak en iyi katkı maddesi dağılımı için MoS2 miktarı tespit edilmiştir. Ayrıca, en iyi saydam iletken malzemeyi belirlemek üzere, dört nokta prob yöntemi kullanılarak elde edilen direnç değerleri farklı MoS2 katkı miktarları için kıyaslanmıştır. Bu çalışmada, bir ZnO / MoS2 saydam iletken oksit filmin optik ve elektrik karakterizasyonlarını incelenmiştir.Doctoral Thesis Structural, Optical and Antibacterial Properties of Ws2 Doped Zno Nanoparticles(2023) Beytür, Sercan; Uysal, Bengü Özuğur; Eşsiz, ŞebnemYapısal ve optik özelliklerinin yanı sıra antibakteriyel özellikleri ile tanınan ZnO nanoparçacıkları, çeşitli alanlarda yaygın olarak uygulanmaktadır. Metaller veya metal oksitler gibi farklı malzemelerin ZnO'ya katkılanmasının özelliklerini iyileştirdiği bilinmektedir. Burada %5, %15 ve %25 oranlarında WS2 katkılı ZnO'dan oluşan nanofilmler sentezlenmekte ve özellikleri araştırılmaktadır. Moleküler yerleştirme analizleri ile desteklenen, farklı oranlarda WS2 ilave edildikten sonra bakterisidal özelliklerin arttırılması vurgulanmaktadır ve ilgili proteinlerin hedeflenmesi yoluyla bakteriyel hayatta kalmada çok önemli bir rol oynayan kalıntıların inhibe edici etkileşimi tarafından desteklenmektedir.Article Citation - WoS: 2Citation - Scopus: 3Tailoring the Electrical and Optical Properties of Carbon Nanotube Reinforced Transparent Tio 2 Composites by Varying Nanotube Concentrations(World Scientific Publ Co Pte Ltd, 2019) Uysal, Bengü Özuğur; Akkaya Arier, Ümit Özlem; Pekcan, ÖnderIn the present work multi-walled carbon nanotube (MWCNT)-doped TiO 2 nanocomposite films were synthesized by sol-gel method. The influence of nanotube concentration on the structural electrical and optical properties of the films was investigated. The beneficial effects of the addition of carbon nanotubes into a TiO 2 film and titania-coated MWCNTs have much in common. On the other hand this work contributes to the previous studies in terms of the optical and electrical properties of MWCNT. For this reason MWCNT/rare brookite-phased TiO 2 matrix as simple sol-gel deposited composite films were investigated in our study. The XRD studies showed that the composite film has a brookite crystal structure at the annealing temperature of 450C. According to the surface morphology investigations SEM image of nanocomposite film shows that composite film has a granular and rod-like structure. The absorbance measurements of the films were carried out by the UV-Vis spectrophotometer to investigate transparency and to calculate the bandgap energy of composite films. The surface resistivity of the MWCNT-doped TiO 2 composites decreased from 2.50×1010 to 2.20×109 ohm/sq with increase in MWCNT content. © 2019 World Scientific Publishing Company.Article Citation - WoS: 2Citation - Scopus: 2Fractal Features and Structural Morphological Optical Characteristics of Sol-Gel Derived Silica Nanoparticled Thin Films(Polish Acad Sciences Inst Physics, 2018) Uysal, Bengü Özuğur; Pekcan, ÖnderNanostructured silica films using a simple and effective sol-gel spin coating technique were synthesized and the influence of ammonia/sol ratios on the particle size and thickness of this film was investigated. In addition fractal dimensions of the prepared films were determined using the scattering response technique. The samples were characterized by atomic force microscopy and UV-vis spectroscopy. Comparing optical method and image analysis of atomic force microscopy micrographs the fractal dimension of silica nanoparticled thin films was determined. The fractal dimensions of the films verified by atomic force microscopy analysis were found to be around 2.03 which is very close to the values (2.0358 2.0325 and 2.0335) obtained using optical method. As a result of these findings precise determination of the nanoparticled silica thin films fractal dimension using both optical and surface analysis methods was realized.Article Citation - WoS: 3Citation - Scopus: 4The Effects of Dea:water Ratio on the Properties of Zno Nanofilms Obtained by Spin Coating Method(Elsevier Science, 2014) Akkaya Arier, Ümit Özlem; Uysal, Bengü ÖzuğurIn this work the ZnO were fabricated with the sol-gel spin coating method and the effects of the Dea:water ratios on the properties of the as-prepared ZnO thin films were determined by using a X-ray diffractometer transmission electron microscope scanning electron microscope atomic force microscope ultraviolet-visible spectrophotometer and spectrophotometer. Experimental results indicated that the Dea:water ratio affected the structural and optical properties of the ZnO films considerably. The activation energy for the particle growth of ZnO nanofilms and the effects of the Dea:water ratios on the band gap values of the ZnO films were investigated. The film has an activation energy of 26.3 kJ/mol and optical band gap of 3.27-3.31 eV is proportional to the Dea:water ratio. (c) 2014 Elsevier Ltd. All rights reserved.Review Citation - WoS: 106Citation - Scopus: 149Transducer Technologies for Biosensors and Their Wearable Applications(Mdpi, 2022) Polat, Emre Ozan; Cetin, M. Mustafa; Tabak, Ahmet Fatih; Bilget Guven, Ebru; Uysal, Bengu Ozugur; Arsan, Taner; Kabbani, Anas; Güven, Ebru Bilget; Gul, Sumeyye BerfinThe development of new biosensor technologies and their active use as wearable devices have offered mobility and flexibility to conventional western medicine and personal fitness tracking. In the development of biosensors, transducers stand out as the main elements converting the signals sourced from a biological event into a detectable output. Combined with the suitable bio-receptors and the miniaturization of readout electronics, the functionality and design of the transducers play a key role in the construction of wearable devices for personal health control. Ever-growing research and industrial interest in new transducer technologies for point-of-care (POC) and wearable bio-detection have gained tremendous acceleration by the pandemic-induced digital health transformation. In this article, we provide a comprehensive review of transducers for biosensors and their wearable applications that empower users for the active tracking of biomarkers and personal health parameters.
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