Serhan YAMAÇLI
Elektrik-Elektronik Mühendisliği

Varyantlar
E-Posta	syamacli@nny.edu.tr
Website
Durum
Ünvan	Prof. Dr.
YÖK Araştırmacı Numarası

Atıf Dağılımları

Axsis Yayın Dağılımı 18

Investigation and comparison of the large-signal characteristics anddynamical parameters of silicene and germanene nanoribbon interconnects

Serhan YAMAÇLIOne dimensional materials such as nanotubes and nanoribbons are studied widely in the literature for their peculiar properties. In particular, zigzag graphene and silicene nanoribbons constitute an active research area for the possibility to use them as interconnects. Recently, it is exposed that asymmetric zigzag germanene nanoribbons also show similar metallic characteristics. In this work, the electronic transport properties and dynamical parameters of zigzag silicene and germanene nanoribbons (ZZ-SiNR and ZZ-GeNR) are investigated and compa ...Daha fazlası Makale/Derleme2018Computational Materials Science8 Görüntülenme

Comparison of the terahertz and optical characteristics of graphene and silicene nanoribbons utilizing first-principles approach

Serhan YAMAÇLIOptical applications of graphene and related two-dimensional materials are continuously taking interest. In this study, accurate first-principles simulations are utilized for obtaining the terahertz and optical characteristics of realistic graphene and silicene nanoribbons (GNRs and SiNRs). Density functional theory is used for calculating the electron density and then Kubo-Greenwood formalism is applied for the computation and comparison of the complex dielectric functions of equivalent GNR and SiNR samples, which are found to be consistent wi ...Daha fazlası Makale/Derleme2016Journal of Optoelectronics and Advanced Materials10 Görüntülenme

Observation of negative differential resistance in mesoscopicgraphene oxide devices

Serhan YAMAÇLIThe fractions of various functional groups in graphene oxide (GO) are directly related to its electrical and chemical properties and can be controlled by various reduction methods like thermal, chemical and optical. However, a method with sufcient controllability to regulate the reduction process has been missing. In this work, a hybrid method of thermal and joule heating processes is demonstrated where a progressive control of the ratio of various functional groups can be achieved in a localized area. With this precise control of carbon-oxygen ...Daha fazlası Makale/Derleme2018 Scientific Reports11 Görüntülenme

Modulation of the electronic transport properties of silicon nanotubesvia hydrogenation ratio

Serhan YAMAÇLIIn this work, electronic transport properties of hydrogenated silicon nanotubes (SiNTs) are studied using first-principles methods. Metallic (4, 4) and (7, 7) SiNTs are simulated using density functional theory combined with non-equilibrium Green's function formalism. The current–voltage characteristics of these nanotubes are obtained for various hydrogenation ratios considering that hydrogenation provides stability to SiNT structures as studied in the literature. The transmission spectra of the investigated SiNT structures are also given and d ...Daha fazlası Makale/Derleme2016Materials Research Express10 Görüntülenme

Investigation and comparison of bare-dihydrogenated junction rectifiers of graphene and silicene nanoribbons

Serhan YAMAÇLIAlthough silicon and similar bulk materials are widely used in today’s integrated circuits, the transition to lower dimensional structures such as two-dimensional graphene, one-dimensional graphene nanoribbons (GNRs) and silicene nanoribbons (SiNRs) seems inescapable due to the increment of inelastic scattering and related performance degrading effects in bulk circuit components. In this context, GNRs and SiNRs provide advantages such as low area consumption and the adjustment of their electronic behaviours by edge states and widths. On the oth ...Daha fazlası Makale/Derleme2016Journal of Computational Electronics7 Görüntülenme

Comparison of the electronic transport properties of metallic graphene and silicene nanoribbons

Serhan YAMAÇLICarbon-based materials such as carbon nanotubes and graphene nanoribbons are investigated extensively for the near future nanoelectronics technology. Considering the expertise on the processing of silicon, various implementations of silicon counterparts of these nanoscale components such as silicon nanotubes and silicene nanoribbons have also been reported recently. In this work, electronic transport properties of metallic graphene and silicene nanoribbons (GNRs and SiNRs) are compared. Ab initio simulations based on density functional theory c ...Daha fazlası Makale/Derleme2015Journal of Nanoparticle Research18 Görüntülenme

Investigation of the voltage-dependent transport properties of metallic silicon nanotubes (SiNTs): A first-principles study

Serhan YAMAÇLIConsidering that the current microelectronics technology is built upon silicon, various nanoscale silicon structures are being investigated. In this study, voltage-dependent transmission characteristics of short silicon nanotubes (SiNTs) are investigated using first-principles methods. Density functional theory in conjunction with non-equilibrium Green’s function formalism is utilized to simulate metallic (5, 5) and (8, 8) SiNTs in order to obtain their current–voltage characteristics. The variation of the SiNT resistance with the applied volta ...Daha fazlası Makale/Derleme2014Computational Materials Science8 Görüntülenme

Voltage-dependent parameter extraction for graphene nanoribbon interconnect model through ab initio approach

Serhan YAMAÇLIThis paper presents electrical parameter extraction for metallic graphene nanoribbon (GNR) interconnects utiliz- ing ab initio approach. Unlike the studies taking the kinetic inductance, quantum capacitance and Fermi velocity as constant values, voltage-dependencies of these parameters are obtained for GNR transmission line model. The variations of the kinetic energy and the current by the applied voltage are taken as bases for voltage-dependent kinetic inductance calculation. Quantum capacitance and the Fermi velocity are also computed from th ...Daha fazlası Makale/Derleme2014Thin Solid Films5 Görüntülenme

Algebraic Current-voltage and Voltage Dependent Resistance Expressions for Ballistic Nano Conductors and Their Low Voltage Nonlinearity

Serhan YAMAÇLIIn this study, an algebraic current-voltage (I-V ) equation suitable for the hand-calculation of ballistic nano conductors is derived from Landauer’s formulation. A voltage and temperature dependent resistance expression is also obtained. It is shown that the presented algebraic I-V expression and the original Landauer’s formula give the same characteristics as expected. Moreover, the I-V characteristics of ballistic nano conductors are investigated and it is concluded that there is an inescapable nonlinearity originating from the curvature of ...Daha fazlası Makale/Derleme2013Nano-Micro Letters16 Görüntülenme

Accurate SPICE compatible CNT interconnect and CNTFET models for circuit design and simulation

Serhan YAMAÇLISPICE compatible CNT interconnect and CNTFET models in Verilog-A hardware description language are presented in this paper. Metallic CNTs are shown to have current saturation characteristics above a threshold voltage and then modelled with piecewise linear functions. On the other hand, the CNTFET model developed utilizes the calculation of the self-consistent potential of the CNT channel depending on gate and drain voltages. Unlike the previous SPICE-enabled CNTFET models using approximations and curve fittings, the proposed model employs a sel ...Daha fazlası Makale/Derleme2013Mathematical and Computer Modelling8 Görüntülenme

Effects of soybean biodiesel on engine vibration and noise emission

Beginner`s guide to iOS 13 app development using swiftUI and UIKit

Serhan YAMAÇLIThe author assumes you have no experience in appdevelopment. The book starts with the installation of the required programmingenvironment and setting up the simulators. Then, the simplest Hello World appis developed step by step. In the next chapter, basics of the Swift 5.1programming language are given with practical examples. Screenshots and codesnippets are clearly given in the book to guide the reader. After the Swiftlecture, 8 complete apps (including a 2D game in SpriteKit and a 3D game inSceneKit) are developed in separate chapters. Both ...Daha fazlası Kitap2020Beginner`s guide to iOS 13 app development using swiftUI and UIKitManchester Academic Publishers18 Görüntülenme

Modulation of the electronic transport properties of silicon nanotubes via hydrogenation ratio

Investigation and comparison of the large-signal characteristics and dynamical parameters of silicene and germanene nanoribbon interconnects

Serhan YAMAÇLIOne dimensional materials such as nanotubes and nanoribbons are studied widely in the literature for their peculiar properties. In particular, zigzag graphene and silicene nanoribbons constitute an active research area for the possibility to use them as interconnects. Recently, it is exposed that asymmetric zig- zag germanene nanoribbons also show similar metallic characteristics. In this work, the electronic trans- port properties and dynamical parameters of zigzag silicene and germanene nanoribbons (ZZ-SiNR and ZZ-GeNR) are investigated and c ...Daha fazlası Makale/Derleme2018Computational Materials Science11 Görüntülenme

Electric field tunable negative differential resistance in zigzag phosphorene nanoribbons

Serhan YAMAÇLIThe current-voltage characteristics and negative differential resistance of zigzag phosphorene nanoribbons are investigated in this paper. The origin of the negative differential resistance behaviour is explained by the inspection of the transmission eigenstates. Moreover, it is shown that the current-voltage characteristics and the negative differential resistance value can be changed by applying a perpendicular electric field thanks to the buckled structure of phosphorene nanoribbons. It is concluded that this peculiar electronically tunable ...Daha fazlası Makale/Derleme2019Materials Research Express5 Görüntülenme

Investigation of static and dynamic electronic transport characteristics of zigzag arsenene nanoribbons: An ab-initio study

Serhan YAMAÇLIElectrical transmission characteristics of zigzag arsenene nanoribbons having various widths are investigated in this paper. Both static current-voltage characteristics and dynamic kinetic inductance, quantum capacitance and cut-off frequency parameters are obtained via ab initio computations for zigzag arsenene nanoribbons having eight different widths. The results expose that while negative differential resistance characteristics are common to all of the studied nanoribbons while current-voltage variations, negative differential voltage range ...Daha fazlası Makale/Derleme2019MATERIALS RESEARCH EXPRESS8 Görüntülenme

Zaman tanım bölgesinde sonlu farklar yöntemi ile Python dilinde grafik kullanıcı ara yüzlü bir elektromanyetik benzetim yazılımının geliştirilmesi

Serhan YAMAÇLIRastgele geometrilerin söz konusu olduğu durumlarda elektromanyetik çözümler için sayısal yöntemler kullanılmaktadır. Zaman bölgesinde sonlu farklar (ZTBSF) metodu da bu amaçla kullanılan popüler yöntemlerden biridir. Bu çalışmada, Python programlama dilinde ZTBSF yöntemi ile rastgele yapıların elektromanyetik benzetimlerini yapmak için bir yazılım geliştirilmiştir. Bu yazılıma Tkinter modülü kullanılarak bir grafik kullanıcı arayüzü de eklenerek kullanıcı dostu bir yapı elde edilmiştir. Çeşitli elektromanyetik problemlerin hem geliştirilen yaz ...Daha fazlası Makale/Derleme2021Konya Mühendislik Bilimleri Dergisi8 Görüntülenme

Üretici fiyatlarının doğrusal ve olmayan yöntemlerle tahmini: Arıma ve makina öğrenmesi yöntemlerinden bulgular

Dilek SÜREKÇİ YAMAÇLI Serhan YAMAÇLIBildiriBildiri2022V. Uluslararası Sosyal Bilimlerde Kritik Tartışmalar Kongresi14 Görüntülenme

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