Ömer Işık

ORCID: 0000-0002-0726-9446
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About
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Research Areas
  • Ultrasound and Hyperthermia Applications
  • Microwave Imaging and Scattering Analysis
  • Ultrasound Imaging and Elastography
  • Wireless Body Area Networks
  • Antenna Design and Analysis
  • Supercapacitor Materials and Fabrication
  • Membrane Separation Technologies
  • Microbial Inactivation Methods
  • Conducting polymers and applications
  • Sensor Technology and Measurement Systems
  • Fuel Cells and Related Materials
  • Electromagnetic Fields and Biological Effects
  • Inhalation and Respiratory Drug Delivery
  • Advanced battery technologies research
  • Engineering and Technology Innovations
  • Membrane-based Ion Separation Techniques
  • Thermal Analysis in Power Transmission
  • Electromagnetic Compatibility and Measurements
  • Metamaterials and Metasurfaces Applications
  • Induction Heating and Inverter Technology
  • High voltage insulation and dielectric phenomena
  • Electrical Fault Detection and Protection
  • Electromagnetic Scattering and Analysis
  • Advanced Antenna and Metasurface Technologies
  • Electromagnetic Simulation and Numerical Methods

Istanbul Arel University
2022-2025

Beykent University
2020

Fatih University
2009-2015

In this study, a numerical simulation was used to evaluate the insulation performance of polyethylene (PE) and polyvinyl chloride (PVC) under varied environmental electrical conditions. Tests were conducted at temperatures 22 °C 55 °C, with current levels 40 A 60 A, examining key parameters such as electric field intensity, density, Joule heating. The results show that, lower temperature conditions, PE demonstrates greater capacity but suffers from increased heating energy loss. Conversely,...

10.3390/en18061366 article EN cc-by Energies 2025-03-11

Abstract In advanced supercapacitor applications, redox‐based electrolyte systems, particularly the synergistic potential of benzoquinone, glycerol, and phosphoric acid, plays a crucial role. However, poor electrochemical stability these systems limits their practical use. Benzoquinone, known for its high redox activity, was incorporated into glycerol as stable host‐gel matrix combined with acid to produce high‐ion‐conductivity electrolyte. this study improved charge–discharge kinetics...

10.1002/slct.202405311 article EN ChemistrySelect 2025-04-01

Improvement in the antenna gain is usually achieved at expense of bandwidth and vice versa. This where realization this enhancement can be made through compromising profile. In work, we propose a new design incorporating periodic metasurface array to enhance while keeping low-profile scheme. The proposed was simulated fabricated order validate results operating frequency range from 10 MHz 43.5 GHz. Computer simulation technology (CST) microwave studio software used simulate antenna, LPKF...

10.1155/2020/8813951 article EN cc-by International Journal of Antennas and Propagation 2020-12-16

The present work reports on high-performance and flexible supercapacitors assembled using a cost-effective nonflammable electrolyte with activated carbon electrodes. was prepared by rapidly blending ternary system comprising poly(vinyl alcohol)(P)/glycerol (G)/boric acid (B) hydrogel doped LiNO3 (Li),─henceforth denoted as PGBLi,─at ambient temperature. Once partial in situ cross-linking occurred between P B, the polymer electrolytes were cast onto PGBLi retained excellent flexibility high...

10.1021/acs.energyfuels.3c03614 article EN Energy & Fuels 2023-12-07

This paper presents the design, simulation, fabrication, and measurement of a circular spiral microstrip antenna embedded in distilled water bolus. The is mainly designed to operate at 434 MHz ISM band be used for hyperthermia applicator. performance compared conventional patch also results show that has significant narrower radiation pattern capable multiple frequencies as well. Narrow beam desired design multiantenna arrangement with less coupling better focusing resolution which can...

10.1155/2013/954986 article EN cc-by International Journal of Antennas and Propagation 2013-01-01

This paper presents the adequateness of a rectangular spiral shaped patch antenna and Vivaldi having narrow beam width to use for arrangements in microwave hyperthermia applications. The results obtained from simplified leg model show small size due its capability operate at multi frequencies width. In addition lateral is promising it configuration system application cancer treatment.

10.1109/ursigass.2011.6051378 article EN 2011-08-01

This paper presents the design of a circularly shaped spiral microstrip antenna and conventional patch both are embedded inside distilled water bolus. The adequateness antennas is investigated for hyperthermia applications. novelty is, it has narrower radiation pattern resonates at multiple frequencies to have better control over penetration depth focusing considerations.

10.1109/aps.2012.6349152 article EN 2012-07-01

A female breast hyperthermia applicator is designed with twelve microstrip spiral antennas embedded in distilled water and operating at 434 MHz. The are directed towards the tumor its phases individually adjusted to have a positive interference location. simulated temperature distribution SAR values tissues obtained by means of SEMCAD X presented.

10.1109/aps.2013.6711682 article EN 2013-07-01

The adequateness of a circularly shaped spiral microstrip antenna and conventional patch is investigated for hyperthermia applicator design. A head model simulated by using both types to observe the field distributions. results show that novel more adequate applicator.

10.1109/aps.2012.6348951 article EN 2012-07-01

Hyperthermia is defined as the heating of cancer tissues by means a microwave antenna system. To that end temperature tissue depending on its character exposed to electromagnetic field rise between 41degC and 44degC. An important step in this application while you increase healthy must be not damaged. The aim paper modeling some part human body with containing exposing it under system, calculating SAR values observing distribution. As first we designed three-dimensional neck-head model apply...

10.1109/biyomut.2009.5130374 article EN 2009-05-01

The new radiation techniques are recently started to get more significance in the treatment of cancer. Electromagnetic hyperthermia is among one prospective techniques. In this method aim increase temperature locally cancer tissues by exposing them 30-60 minutes or on electromagnetic radiation. desired range 42-45 οC cancerous cells while keeping healthy lower than 42 οC. Although within these ranges it not possible kill directly intention cure damaging cell's protein build and change cell...

10.1109/aps.2010.5561169 article EN 2006 IEEE Antennas and Propagation Society International Symposium 2010-07-01

Remainders of various forms series expressions a function <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$F(x)$ </tex-math></inline-formula> , which arises frequently in the high-frequency solutions electromagnetic wave radiation and scattering problems, are transformed into some integrals. Then, saddle-point method is applied to those integrals obtain accurate approximations for terminating expressions....

10.1109/tap.2022.3217166 article EN IEEE Transactions on Antennas and Propagation 2022-11-03

İnsan vücudu ile elektromanyetik dalgaların etkileşimi, dokuların ve hücrelerin dielektrik özellikleri gibi &#x0D; faktörlerin yanı sıra diğer etkenler tarafından da şekillenir. Mikrodalga hipertermi mikrodalga görüntüleme uygulamalarında, deney ortamı ölçüm düzeneklerinde simülasyon sonuçlarını doğrulamak için doku taklit eden materyallere ihtiyaç vardır. Bu çalışmada uygulamalarında kullanılmak üzere kadın memelerine ait bazı materyallerinin karakterizasyonu sunulmuştur. Karakterize edilen...

10.35414/akufemubid.1267788 article TR Afyon Kocatepe University Journal of Sciences and Engineering 2023-10-27
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