Browsing by Author "Kocum, Cengiz"

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A Plasma Arc-Based Electromechanical System Designed for Microchannel Processing
(Başkent Üniversitesi Mühendislik Fakültesi, 2024-05-31) Akin, Fevzi; Ersoy, Ece; Idil, Deniz; Ozsimitci, Melih; Serdaroglu, Dilek Cokeliler; Ic, Yusuf Tansel; Atalay, Kumru Didem; Kocum, Cengiz; Okat, Kemal
Plasma technology is based on a simple physical principle. When more energy enters the gas, it ionizes and becomes the fourth state of matter, the energy-dense plasma. The studies carried out within the scope of this study were designed to create microchannels on lamellar glass using an improved redesign of the current plasma arc device, which is the main subject of the paper. The created microchannel is examined at the microscale. Experimental analysis was conducted considering the effect of plasma on the effect of microchannel quality. We performed an experimental design study to determine the optimal parameter levels for improving microchannel quality. The predicted results have been validated with the experimental results. An experimental design study provides useful results, such as information about the distance between the probes, pulse duration, and material temperature, which enhances the channel dimensions. The improved device can be utilized effectively to establish microchannel processing in practice.
Improving The Quality Of Micro Holes Drilled With A Current Detection Plasma Arc Device
(JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING, 2024-10) Ic, Yusuf Tansel; Kocum, Cengiz; Atalay, Kumru Didem; Serdaroglu, Dilek Cokeliler; Akar, Gurel; Polat, Isil Yanki; Samsun, Berk; Caliskan, Sevde; Atmaca, Dicle Naz; Karayalcin, Serkan
Today, microholes play a crucial role in many sectors. Microholes are used in fields such as aerospace, computer systems, and electronic and mechanical industries. In this paper, we improve the performance of the current sensing plasma arc device to create holes within the same diameter, appropriate delamination, and surface quality. In addition, we aim to improve the processing quality of the current sensing plasma arc device, which drills holes from the micron level to the millimeter level and creates microstructures on hard, durable, and inert materials such as glass and quartz. Additionally, we presented a multiobjective optimization model to reach the optimal factor levels to obtain the minimum hole diameter with minimum delamination. For this objective, we propose a design of an experiment-integrated goal programming model in this study. The optimal levels are 90 Watt, 18 Hz, 2.73 ms, and 11.6 cm for the parameter values Power, Frequency, Lead time, and Distance between the probes, respectively, to reach the optimal diameter (183 mu m) and delamination values (1.025).
A Novel Portable Nanotechnology Approach for Targeted Cancer Therapy
(2018) Bunyatova, Ulviye; Kocum, Cengiz; Haberal, Erdem; Asadullayev, Alaskar; Salamov, Gulbala; 0000-0003-2788-550X; ABC-8833-2020
Several health-related problems can be monitored, treated and minimized with the use of technological equipment and treatment methods. The development of new synthesis methods and designing nanostructured biosensing colloidal polymeric bioorganic nanomaterials and metal using cheap and environmentally friendly methods remains a challenge to the scientific community. This study is focused on the presentation a new approaches to targeted treatment with a novel portable sensing system. We have found that aqueous blend of intercalated polysaccharides nanocomposites with a reactive functionalizing copolymer and silver nanoparticules (AgNP-s) are sensitive towards a visible light source-white light emitted diode (wLED). The presented system and ideas can be used as an integrated pathways for targeted cancer therapy, biosensors, and drug delivery systems. AgNP-s, having unique sizes in the range between 2 -6 nm have been obtained by the influence of harmless wLED treatment during extremely short time around 10-12 minutes. wLED based portable wire-device is an effective route to obtain bio-nanocomposition with anticancer and drug delivery potential as a pathway of targeted cancer therapy. Moreover, after applying multifunctional biocomposition on the tumor area this effective, eco-friendly, low cost and harmless for human health treatment takes only 10-12 minutes.