Browsing by Author "Gunes, Umit"

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Recent Progress of Electromagnetic Wave Absorbers: a Systematic Review and Bibliometric Approach
(Keai Publishing Ltd, 2023) Akinay, Yuksel; Gunes, Umit; Colak, Bektas; Cetin, Tayfun
The electromagnetic wave absorption capabilities of an absorber depend on its dielectric and magnetic components, which determine its interfacial polarization, conductivity loss, magnetic loss, and other such mechanisms. In this study, a comprehensive review of the electromagnetic wave and material interaction was conducted. Moreover, for a better understanding of the trends and evolutionary developments in the study of the electromagnetic wave absorber, 23300 documents dated between 1990 and 2020 were examined, which were obtained from Scopus using the keywords of "electromagnetic wave absorption " and "microwave absorption ". The data search in Scopus was conducted using the related keywords in the search bar for titles and abstracts. These results demonstrate that the majority of research regarding electromagnetic wave absorbers was conducted in China, which was followed by the United States. The number of published documents regarding the electromagnetic wave absorption field significantly increased between 1990 and 2020; these documents were mostly published as journal articles. With respect to the journal activity, the most productive journal was the "Journal of Alloys and Compounds ", with a total of 592 articles. In addition, graphene and titanium dioxide were determined to be the materials that were most studied in the field of electromagnetic wave absorption.
Review: Recent Developments in 2D Mxene-Filled Bioinspired Composites for Biomedical Applications
(Springer, 2025) Akinay, Yuksel; Topuz, Mehmet; Gunes, Umit; Gokdemir, Muhammet Enver; Cetin, Tayfun
Two-dimensional carbide- and nitride-based MXene materials have become some of the most studied materials in interdisciplinary fields due to their superior properties. This review comprehensively discusses recent advances in MXene materials such as bioinspired coating films, scaffolds, and electrochemical activities for use in biomedical fields. MXene consists of multilayer 2D nitride, carbide, or carbonitride flakes with excellent electrical conductivity, large surface area, and good mechanical properties. Bibliometric studies have revealed a sharp increase in the number of publications and citations, having reached 15,831 records as of February 2025. Notably, the number of citations surged from under 20 in 2012 to over 222,000 in 2024. Due to being two-dimensional materials with superior physicochemical and biological properties, MXenes are also being increasingly used in biomedical and engineering applications. They have been reported to be ideal for such biomedical applications as corrosion-resistant biofilms, biocompatibility, low toxicity, drug delivery, and tissue engineering. In addition, MXene-based scaffolds have emerged as a promising material for bone tissue engineering due to their extraordinary mechanical durability, biocompatibility, and adjustable surface properties. By aiding tissue regeneration and preventing infections, MXene scaffolds have also been found to exhibit enhanced drug delivery and antibacterial properties. Recent advances in materials science have focused on creating bioinspired structures with multifunctionality. Taking into account MXenes' multilayered structures and functional surfaces, unique physicochemical properties have been designed by learning from nature to produce bioinspired materials. This article comprehensively reviews biomedical applications of such 2D MXene materials as bioinspired coating films, scaffolds as biosensors, drug delivery, cancer treatments, and tissue regeneration.