Article
Physics, Condensed Matter
Yashar Azizian-Kalandaragh, Yosef Badali, Mir-Ahmad Jamshidi-Ghozlu, Ferhat Hanife, Suleyman Ozcelik, Semsettin Altindal, Gholamreza Pirgholi-Givi
Summary: The temperature-dependent dielectric properties of the Au/ZnO-PVA/n-Si structure were studied using capacitance-voltage (C-V) and conductance-voltage (G/ro-V) experiments. The results showed that all electrical and dielectric variables in these structures strongly depend on temperature. The use of ZnO-PVA nanocomposite as an interlayer resulted in changes to these parameters. The presence of series resistance caused an increase in the values of capacitance and conductance as the temperature increased. The activation energy value obtained from the conduction procedure's contribution to the boundary grains was found to be 0.04 eV, indicating a moderate amount.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Engineering, Electrical & Electronic
Muharrem Gokcen, Songul Taran, Ersin Orhan
Summary: Polyvinyl alcohol (PVA) doped with di[1-(2-ethoxyethyl)-5-nitrobenzimidazole] cobalt dichloride was used as an interface in Au/n-Si diodes, with the electrical properties of the fabricated diodes examined under various ultraviolet illumination intensities. It was found that the ideality factor values of the diodes increased with increasing illumination, and the photo-responsivity of the PVA composite diode showed good performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Polymer Science
Sofia Mares-Bou, Maria-Antonia Serrano, Jose Antonio Gomez-Tejedor
Summary: Electrospun membranes were developed for controlled drug release with different coating structures. The morphology of the fibers was analyzed and different release rates were obtained for the coated fibers, making them suitable for various applications.
Article
Polymer Science
Pritom J. Bora, Amith G. Anil, Praveen C. Ramamurthy, Yee Hui Lee
Summary: By crosslinking polyvinyl alcohol (PVA) with divinyl sulfone (DVS) at room temperature, water-insoluble crosslinked PVA (XPVA) with superior thermal stability and microwave absorption properties is obtained. X-PVA exhibits excellent microwave absorption properties, making it suitable for self-powered devices.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Fu Deng, Hongxin Huang, Jing-Dong Chen, Shimei Liu, Huajian Pang, Xiaobing He, Sheng Lan
Summary: By coupling a dielectric-metal hybrid nanocavity made of silicon and gold, we achieved enhanced plasmon-exciton coupling and revealed a new mechanism for Rabi splitting, opening up new possibilities for constructing nanoscale photonic devices.
Article
Pharmacology & Pharmacy
Elizabeth Lopez-Ramirez, Christian Chapa-Gonzalez, Carlos A. Martinez-Perez, Rene Escobedo-Gonzalez, Maria Ines Nicolas Vazquez, Francisco Medellin-Rodriguez, Perla E. Garcia-Casillas
Summary: This study developed a method for immediate dermal release of Citrulline Malate (CM) using polyvinyl alcohol (PVA)-CM integrated fibers, successfully delivering up to 5g of CM supplement. Experimental results showed a proportional relationship between release time and CM amount, and hydrolytic degradation corresponded to that of polymeric fibers.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Jie Han, Yao Liang, Chengxiu He, Yujia Tong, Weixing Li
Summary: A catalytic composite membrane was developed for enhanced esterification using lyophilization, showing superior catalytic performance and stability in the reaction process.
Review
Chemistry, Multidisciplinary
Sung Giu Jin
Summary: The development of ideal wound dressings is crucial for wound healing, and Polyvinyl alcohol (PVA) based materials have gained significant attention due to their excellent properties such as biodegradability, biocompatibility, non-toxicity, and low cost. PVA can create a moist wound environment, improve physical properties, and enhance wound healing rates. Additionally, PVA can be mixed with other materials for drug delivery and wound healing purposes.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Mohd Sadiq, M. Ajmal Khan, Mohammad Moeen Hasan Raza, Shah Masheerul Aalam, Mohammad Zulfequar, Javid Ali
Summary: New polymer blend composite electrolytes were prepared using PVA-PEG, NaNO3, and MWCNTs. The addition of MWCNTs improved the ionic conductivity and electrochemical stability of the polymer blend, making it suitable for energy storage device applications.
Review
Biochemistry & Molecular Biology
John Ojur Dennis, M. F. Shukur, Osamah A. Aldaghri, Khalid Hassan Ibnaouf, Abdullahi Abbas Adam, Fahad Usman, Yarima Mudassir Hassan, A. Alsadig, Wilson L. Danbature, Bashir Abubakar Abdulkadir
Summary: This review article focuses on the application and development of solid polymer electrolytes (SPEs) based on polyvinyl alcohol (PVA) in supercapacitors. The discussion includes the influence of PVA as a host polymer and conducting salts, the formation of SPEs, and the ion transport mechanism. The review also highlights the fundamentals of electrochemical characterization and thermodynamic transport models of ions, and discusses methods for enhancing the electrochemical performance of PVA-based SPEs and the challenges they currently face.
Article
Polymer Science
Muhammad Akhlaq, Abul Kalam Azad, Inam Ullah, Asif Nawaz, Muhammad Safdar, Tanima Bhattacharya, A. B. M. Helal Uddin, Syed Atif Abbas, Allan Mathews, Sukalyan Kumar Kundu, Mireia Mallandrich Miret, H. C. Ananda Murthy, H. P. Nagaswarupa
Summary: The study aimed to develop and assess Gel/PVA hydrogels as a pH-sensitive matrix for delivering methotrexate to the colon. Various evaluations and analyses confirmed the potential application of these hydrogels as drug delivery systems for controlled release of methotrexate to the colon.
Article
Materials Science, Composites
Chenyang Xu, Erchun Li, Jinjue Zeng, Yue Wang, Tao Wang, Cong Ge, Chen Zhang, Qi Wang, Tian Gao, Yagang Yao, Xiangfen Jiang, Ya Zhang, Qian Cheng, Xue-Bin Wang
Summary: Plasma activations can effectively functionalize BN and change its hydrophobicity to hydrophilicity, achieving interfacial bonding between plasma-treated BN fillers and polyvinyl alcohol molecules. The BN/polyvinyl alcohol composite material shows a high through-plane thermal conductivity of 2.4 W m(-1) K-1 for a filling fraction of 50 wt% BN treated by N-2 plasma, offering a promising approach for the high-efficiency and low-cost fabrication of BN-based composite materials.
COMPOSITES COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Zhihui Yang, Yuming Wu, Chenxi Han, Yipeng Quan, Youquan Li, Weiming Wang, Xue Min, Jun Xiong, Ming Li
Summary: Interfacial solar steam generation (ISSG) is a potential technology to address freshwater shortage. A Fe3O4-polyvinyl alcohol sponge photo-absorber (Fe-PAS) with a porous structure and narrow bandgap was developed, achieving high light absorption and steady desalination performance. Indoor and outdoor desalination experiments demonstrated Fe-PAS's durability and its ability to extract freshwater from salt water.
Article
Forestry
Jiamin Wang, Tiantian Yang, Shaodi Zhang, Jinzhen Cao
Summary: This study explores the application of polyvinyl alcohol (PVA) as a toughening agent in furfurylated wood modification. The results show that the incorporation of PVA can enhance the impact toughness of furfurylated wood and have some influence on its water-related properties.
Article
Construction & Building Technology
Haider M. Al-Baghdadi
Summary: The study investigates the impact of sulfate environment on the mechanical properties of pretreated RCA concrete using a PVA agent. The use of 32% RCA in the concrete mix exhibited the best durability, while higher strength was observed in mixes with RCA pre-soaked in PVA. Increasing the amount of RCA pre-soaked in PVA led to increased hydration and decreased internal voids, impacting the absorption rates under different curing conditions.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Umit Gursel, Muharrem Gokcen, Abdulkadir Alli
MATERIALS CHEMISTRY AND PHYSICS
(2018)
Article
Materials Science, Multidisciplinary
Ersin Orhan, Muharrem Gokcen, Oguz Koysal
Article
Engineering, Electrical & Electronic
Muharrem Gokcen, Songul Taran
MICROELECTRONICS RELIABILITY
(2019)
Article
Chemistry, Physical
Umit Gursel, Songul Taran, Muharrem Gokcen, Yurdagul Ari, Abdulkadir Alli
SURFACE REVIEW AND LETTERS
(2020)
Article
Physics, Condensed Matter
Muharrem Gokcen, Ersin Orhan, Songul Taran
PHYSICA B-CONDENSED MATTER
(2020)
Article
Materials Science, Multidisciplinary
Ersin Orhan, Muharrem Gokcen, Songul Taran
Summary: The study found that the HI30 electrolyte has higher efficiency for UV illumination, and the AN50 electrolyte has higher efficiency for AM1.5 simulated illumination. Additionally, it was observed that the C-2 cell with double layer immersed in dye solution has higher efficiency for both two illumination types and two electrolytes.
BULLETIN OF MATERIALS SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Muharrem Gokcen, Songul Taran, Ersin Orhan
Summary: Polyvinyl alcohol (PVA) doped with di[1-(2-ethoxyethyl)-5-nitrobenzimidazole] cobalt dichloride was used as an interface in Au/n-Si diodes, with the electrical properties of the fabricated diodes examined under various ultraviolet illumination intensities. It was found that the ideality factor values of the diodes increased with increasing illumination, and the photo-responsivity of the PVA composite diode showed good performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Nefise Ozcelik, Tuncay Tunc, Raziye Catak Celik, Mahmut Erzengin, Haci Ozisik
Summary: A newly synthesized hydrazone derivative was characterized using various methods including XRD for crystal structure determination and antioxidant activity testing. The results showed potential radical scavenging ability of the synthesized compound.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Tugce Ozkacar, Songul Taran, Muharrem Gokcen, Ersin Orhan
Summary: This study investigated the effects of photoanode annealing on the performance of dye sensitized solar cells (DSSC), focusing on morphological and photovoltaic properties. Different temperatures were used for annealing the photoanodes, and their impact on series and charge transfer resistances was analyzed through electrochemical impedance spectroscopy. Photovoltaic properties were tested using a solar simulator with different types of electrolyte and redox concentrations.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2021)
Article
Materials Science, Multidisciplinary
Ersin Orhan, Muharrem Gokcen, Songul Taran
Summary: The new benzimidazole functional heteroleptic ruthenium complex dye BRD was prepared for DSSCs and compared with Z907 DSSCs. The BRD DSSC showed excellent thermal stability and different electrolytes had an effect on photovoltaic parameters. Under 100mW/cm² (AM1.5) illumination, the BRD DSSC with AN50 electrolyte exhibited higher short-circuit current density and photovoltaic efficiency.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
A. Al-Khafaji, N. Soylu-Koc, S. P. Altintas, M. Dogruer, C. Altug, M. Gokcen, A. Varilci
Summary: We conducted an in-depth study on the growth, structural properties, and frequency-dependent dielectric function of ZnO nanorods. The results showed that the nanorods have a hexagonal wurtzile structure and exhibit frequency-dependent dielectric properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
N. Soylu Koc, S. P. Altintas, M. Gokcen, M. Dogruer, C. Altug, A. Varilci
Summary: An In/ZnO/p-Si heterojunction diode was fabricated to investigate its photo-responsivity and electrical features under UV light. The synthesis of the ZnO layer on the p-Si single crystal was done using a hydrothermal technique. The I-V analysis of the diode was conducted under dark and UV illumination, and various electrical parameters were obtained from the measurements.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Materials Science, Multidisciplinary
Mustafa Bicer, Muharrem Gokcen, Ersin Orhan
Summary: ZnO photoanodes composed of nanoflowers were synthesized using the seed layer-hydrothermal method. Different morphologies and photovoltaic properties were achieved by introducing different additives. Dye sensitized solar cells were fabricated using these photoanodes, and their performances were characterized.
Article
Engineering, Electrical & Electronic
Muharrem Gokcen, Ersin Orhan, Songul Taran
SENSORS AND ACTUATORS A-PHYSICAL
(2020)
Article
Physics, Multidisciplinary
Mert Yildirim, Abdulkadir Alli, Ahmet Demir, Sema Alli, Muharrem Gokcen
INDIAN JOURNAL OF PURE & APPLIED PHYSICS
(2017)
