Department of Metallurgical and Materials Engineering, Article

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Putting error bars on density functional theory Yuk, Simuck F.; Sargın, Irmak; Meyer, Noah; Krogel, Jaron T.; Beckman, Scott P.; Cooper, Valentino R. (2024-12-01) Predicting the error in density functional theory (DFT) calculations due to the choice of exchange–correlation (XC) functional is crucial to the success of DFT, but currently, there are limited options to estimate this a p...
A comprehensive study of the effect of scanning strategy on IN939 fabricated by powder bed fusion-laser beam Doğu, Merve Nur; Ozer, Seren; Yalçın, Mustafa Alp; Davut, Kemal; Obeidi, Muhannad Ahmed; Şimşir, Caner; Gu, Hengfeng; Teng, Chong; Brabazon, Dermot (2024-11-01) This study provides a comprehensive investigation into the effects of different scanning strategies on the material properties of IN939 fabricated using the PBF-LB process. The scanning strategies examined included alterna...
Oxide coated nickel powder as support for platinum(0) nanoparticles: Magnetically separable catalysts for hydrogen generation from the hydrolysis of ammonia borane Akbayrak, Serdar; Çakmak, Gülhan; Öztürk, Tayfur; Özkar, Saim (2024-10-15) We report the development of a novel method for the preparation of magnetically separable platinum nanoparticles. Magnetic nickel nanopowder is initially synthesized in a radiofrequency plasma reactor where in-line passiva...
Earth-Abundant Divalent Cation High-Entropy Spinel Ferrites as Bifunctional Electrocatalysts for Oxygen Evolution and Reduction Reactions Erdil, Tuncay; Özgür, Çağla; Geyikci, Uygar; LÖKÇÜ, ERSU; Toparlı, Çiğdem (2024-09-23) High-entropy spinel ferrites (HESFs) offer long-term stability and activity in oxygen electrochemical reactions due to entropy stabilization and synergistic effects of multiple elements within their crystal structure. Howe...
Biocompatible Janus microparticle synthesis in a microfluidic device Saqib, Muhammad; Tufan, Yiğithan; Orsel, Z. Cemre; Ercan, Batur; Erdem, E. Yegan (2024-09-01) Janus particles are popular in recent years due to their anisotropic physical and chemical properties. Even though there are several established synthesis methods for Janus particles, microfluidics-based methods are conven...
Post-treatment optimization for silver nanowire networks in transparent droplet-based TENG sensors Cakir, Onuralp; Doğanay, Doğa; Cugunlular, Murathan; Çiçek, Melih Ögeday; Demircioğlu, Onur; COŞKUN, ŞAHİN; Ünalan, Hüsnü Emrah (2024-09-01) Transparent conducting electrodes (TCEs) serve as essential components in various devices, including smart windows, thin film heaters, and sensors. Historically, indium tin oxide (ITO) thin films have served as the primary...
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...
Production and biological properties of nano porous glass microparticles for anticancer drug carrier Ertuş, Emre Burak; Gulbahce-Mutlu, Elif; Alpa, Serife; Öztürk, Abdullah (2024-09-01) Nanoporous glass (NPG) microparticles were produced by conventional melt-quenching followed by acid-alkali leaching to get material for anticancer drug carriers. NPG exhibited a positive zeta potential of 34 mV after [3-(2...
B‐Site Doping Boosts the OER and ORR Performance of Double Perovskite Oxide as Air Cathode for Zinc‐Air Batteries Ozgur, Cagla; Erdil, Tuncay; Geyikci, Uygar; Yildiz, Ilker; Lokcu, Ersu; Toparlı, Çiğdem (2024-09-01)
Direct Synthesis of Zinc-Blende ZnSe Nanoplatelets Es, Muhammed Said; Colak, Ebrar; Irfanoglu, Aysenur; Keleştemur, Yusuf (2024-06-25) The distinct optical properties and electronic structures of two-dimensional colloidal nanoplatelets (NPLs) have garnered significant scientific and practical interest. However, concerns regarding the toxicity of cadmium-b...
Search for carbon additives in Co-free Ni(OH)2 cathodes for NiMH batteries Darıcıoğlu, Necdet Özgür; Öztürk, Tayfur (2024-06-15) In this study, carbon black and plasma black are used as conductive additives solely or in combination to explore the possibility of replacing cobalt based compounds as additive in NiMH cathodes. Two production methods, na...
Lightweight, flexible, and antimicrobial X-ray shielding composites with liquid metal-derived bismuth-tin core-shell particles Dincer, Orcun; Şeyda, Doğu; AKCA, GÜLÇİN; Cengiz, Burak; Gorur, Mustafa Caner; Doğanay, Doğa; Ünalan, Hüsnü Emrah; Çınar, Simge (2024-06-01) The extensive use of low-energy X-rays in clinical diagnostics increased radiation exposure, growing concerns for the health of patients and healthcare professionals. Lead has long served as a traditional material for radi...
Laser powder bed fusion of oxide dispersion-strengthened IN718 alloys: A complementary study on microstructure and mechanical properties Yalçın, Mehtap; Gokbayrak, A.A.; Duygulu, O.; Derin, Cevat Bora; Poplawsky, J.D.; El-Atwani, O.; Aydoğan Güngör, Eda (2024-06-01) In this study, two new grades of oxide dispersion strengthened (ODS) Inconel 718 (IN718) alloys were designed by the thermochemical CALPHAD method and produced by laser powder bed fusion (LPBF) technique. Alloys designated...
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...
Synergistic effects of Core@Shell (CZTS@CZTSe) on photovoltaic & photocathode applications Semalti, Pooja; Nguyen, Ngan T. K.; Özbilgin, İrem Nur Gamze; Uchikoshi, Tetsuo; Sharma, Shailesh Narain (2024-05-01) Nanotechnology has undergone significant advancements attributable to the synthesis of nanoparticles (NPs), reflecting the collaborative endeavours of numerous researchers. This investigation contributes to the field by fa...
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 ...

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