Department of Metallurgical and Materials Engineering

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Ünalan, Hüsnü Emrah (157)
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Recent Submissions

Tungsten oxide filled nanofibers for optical limiting in near infrared region PEPE, YASEMİN; AKKOYUN, ŞERİFE; Asci, Nurcan; Cakır, Onuralp; Tutel, Yusuf; Emrah Unalan, Husnu; KARATAY, AHMET; ELMALI, AYHAN (2024-09-01) In this study, tungsten trioxide (WO3) nanoparticles synthesized by a slightly modified reduction method were used as nanofillers in polyvinylpyrrolidone (PVP) nanofibers produced via electrospinning. SEM images revealed w...
Heat activated VO2 (R) cathodes for high-performance aqueous zinc ion batteries Aydogdu, Busra; Aydin, Selay; Sasikala, Suchithra Padmajan; Ünalan, Hüsnü Emrah; Kim, Sang Ouk; YÜKSEL, RECEP (2024-05-10) We introduce a novel approach for design and production of vanadium dioxide (VO2) cathodes activated by heat, specifically tailored for use in aqueous zinc-ion batteries (ZIBs). Our cathodes exhibit distinctive metal-insul...
Cutting-edge advancements in MXene-derived materials: Revolutionary electrocatalysts for hydrogen evolution and high-performance energy storage Khan, Muhammad; Hussain, Amjad; Saleh, Muhammad Tahir; Ibrahim, Mohammad; Attique, Faisal; Sun, Xiaohui; Ünalan, Hüsnü Emrah; Shafi, Muhammad; Khan, Yaqoob; Khan, Idrees; Ragab, Ahmed H.; Hassan, Abeer A.; Ali, Rawaid; Ali, Zafar; Khan, Abdul Jabbar; Zada, Amir (2024-05-01) MXenes belong to a set of 2-dimensional (2D) materials composed of transition metals, carbides, nitrides, and carbonitrides demonstrated unique properties in several fields including catalysis and energy storage. This revi...
Effect of microwave heating on the interdiffusion in BaTiO3–SrTiO3 binary ceramic system Süer, Başar; Dericioğlu, Arcan Fehmi (2024-04-15) An investigation on the effect of microwave heating (2.45 GHz) on the interdiffusion process was carried out and compared with conventional heating for BaTiO3–SrTiO3 binary system in the temperature range of 1200–1400 °C. ...
Flow mechanisms and their influence on the properties of EGaIn-graphene-poly(ethylene) oxide composites during material extrusion-based additive manufacturing Tandel, Ruchira; Sargın, Irmak; Gozen, B. Arda (2024-03-25) Polymer composites featuring room temperature liquid alloy particles complimenting other conductive fillers enable unique thermal and electrical properties. Direct-ink-writing approach is an intriguing processing path for ...
Development and directed energy deposition of high strength Hf5Mo15Nb35Ta25Ti20 refractory high entropy alloys Özalp, Ali; Okuyucu, Can; Koc, B.; El-Atwani, O.; Aydoğan Güngör, Eda (2024-03-01) In this study, a novel HfMoNbTaTi refractory high entropy alloy was designed by empirical calculations and CALculation of PHAse Diagram (CALPHAD) method by using ThermoCalc software. Directed energy deposition (DED) based ...
The effects of SLM process parameters on the relative density and hardness of austenitic stainless steel 316L Bakhtiarian, Mohammadamin; Omidvar, Hamid; Mashhuriazar, Amirhossein; Sajuri, Zainuddin; Gür, Cemil Hakan (2024-03-01) Selective Laser Melting (SLM) process parameters significantly influence the microstructure and mechanical properties of the final product. Using the Taguchi optimization method, this investigation refined 316L austenitic ...
Enhanced nonlinear absorption and photoluminescence properties of Zn, Fe, Cu, V and Ni doped MoO<sub>3</sub> transition metal oxide thin films PEPE, YASEMİN; Tutel, Yusuf; Ucar, Ali Deniz; Cevik, Eda; KARATAY, AHMET; Ünalan, Hüsnü Emrah; ELMALI, AYHAN (2024-02-01) In this study, the effect of the dopant element on the linear, nonlinear absorption and optical limiting properties of ultrasonically sprayed MoO3 thin films is presented. The linear optical results showed an increase with...
Synergistic effect of nanostructured topography and CNF incorporation into silk fibroin films enhances mouse neuroblastoma cell functions MİMİROĞLU, DİDEM; Tufan, Yiğithan; Yanık, Tülin; Ercan, Batur (2024-02-01) Neural guidance channels (NGCs) are tubular structures placed between distal and proximal ends of a damaged nerve to support nerve regeneration process. Although there are numerous studies focusing on investigation of the ...
Determination of the anisotropy in mechanical properties of laser powder bed fusion Inconel 718 by ultrasonic testing Alay, Tugce Kaleli; Cagirici, Mehmet; Yagmur, Aydin; Gür, Cemil Hakan (2024-02-01)
Size and morphology controlled polyol synthesis of LiFePO4 nanoparticles with addition of organic acid combinations Coşkun, Elif; Kurşun, Ekin; Yıldız, Bayram; Aşkar, Yasemin; Bahtiyar, Doruk; Aydınol, Mehmet Kadri; MAVİŞ, BORA; Çınar, Simge (2024-01-01) A mutual extension of an increasing demand for LiFePO4 (LFP) is the need to develop a synthesis technique that enables improved particle morphology and size control at different scales. In this study, the polyol method was...
Microstructure, mechanical properties, and bone cell interactions of ZTA composites reinforced with BN Buyuker, Gokce Ata; Tufan, Yiğithan; Kayan, Gizem Ozge; Ercan, Batur; Akın Karadayı, İpek; Göller, Gültekin (2024-01-01) Due to their remarkable mechanical properties and biocompatibility, zirconia toughened alumina (ZTA) based composites are preferred materials for dental and orthopedic uses. This study focuses on the production and charact...
Visible-light optical limiting of vanadia–polyvinylpyrrolidone nanofibers PEPE, YASEMİN; Tutel, Yusuf; AKKOYUN, ŞERİFE; Asci, Nurcan; Cevik, Eda; KARATAY, AHMET; Ünalan, Hüsnü Emrah; ELMALI, AYHAN (2024-01-01) In this work, vanadium pentoxide (V2O5) nanoparticles-filled electrospun polyvinylpyrrolidone (PVP) nanofibers were investigated systematically at various nanofiller weight percentages (8 and 10 wt%) and input intensities ...
Exploiting Saturation Regimes and Surface Effects to Tune Composite Design: Single Platelet Nanocomposites of Peptoid Nanosheets and CaCO3 Uçar, Şeniz; Nielsen, Anne R.; Mojsoska, Biljana; Dideriksen, Knud; Andreassen, Jens-Petter; Zuckermann, Ronald N.; Sand, Karina K. (2024-01-01) Mineral-polymer composites found in nature exhibit exceptional structural properties essential to their function, and transferring these attributes to the synthetic design of functional materials holds promise across vario...
The Effect of B-site Doping on NdBaCoaFe2-aO6 (a= 1.8, 1.6, 1.4, 1.2) for Enhanced OER/ORR Activity and Rechargeable Zinc- Air Battery Performance Özgür, Çağla; Toparlı, Çiğdem (2023-12-30)
Synthesis of heterostructured nanocomposites as supercapacitor electrodes and investigation of their electrochemical properties Aytürk, Seden Ezgi Yazar; ÇITAK, ALİME; Aydın, Elif Can; Durukan, Mete Batuhan (2023-12-20) High performance supercapacitors have taken their place in the world as one of the research areas emerging in order to feed increasing energy consumption. By using metal oxides in electrode structures, supercapacitors have...
Morphology of Nanostructured Tantalum Oxide Controls Stem Cell Differentiation and Improves Corrosion Behavior. Erdogan, Yasar Kemal; Uslu, Ece; Aydınol, Mehmet Kadri; Saglam, Atiye Seda Yar; Odabas, Sedat; Ercan, Batur (2023-12-11)
NANO POROUS HIGH ENTROPY OXIDE ELECTROCATALYST FOR HYDROGEN PRODUCTION Özgür, Çağla; Toparlı, Çiğdem; Erdil, Tuncay; LÖKÇÜ, ERSU (2023-12-01)
Nanomechanical properties of Al-Tb marginal metallic glass Okuyucu, Can; Ulucan, Tolga Han; Abboud, Mohammad; Motallebzadeh, Amir; Özerinç, Sezer; Kalay, İlkay; Kalay, Yunus Eren (2023-11-17) Al-Rare Earth (RE) metallic glasses provide an effective model system to study the effect of nanocrystallites in an amorphous matrix on nanomechanical behavior. In this work, we achieved a series of Al-Tb metallic glass-cr...
Mesoporous Cr2O3/MWCNTs/PANI nanocomposite as a high performance anode material for rechargeable lithium ion batteries Kiran, Laraib; Aydınol, Mehmet Kadri; Shah, Syed Sakhawat; Anwar, Aneela; Abbas, Syed Mustansar; Bahtiyar, Doruk; Siddiq, Muhammad; Rehman, Abdul; Ouladsmane, Mohamed; Shahzad, Muhammad Imran (2023-11-15) Chromium oxide (Cr2O3) has been considered as a promising anode material for lithium-ion batteries (LIBs). However, it is accompanied by a large volumetric expansion which compromises battery performance by damaging intern...

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