International Conference On Emerging Technologies In The Field Of Sciences And Engineering
4-6 Mayıs 2023 tarihleri arasında düzenlenen 6. PAKTURK Konferansı'na üç adet sözlü sunum ile katılmış ve 4-5 Mayıs tarihlerinde sunumları gerçekleştirilmiştir. Hem teorik hem de deneysel olarak yürütülen çalışmalardan elde edilen ön veriler ve bilgiler sunulmuştur. Sunumların başlıkları ve özetleri aşağıda verilmiştir:
Structural and Electronic Characterization of m-Fluoroaniline and m-Iodoaniline: A Density Functional Theory Study
(Yavuz Ekincioğlu and Abdullah Kepceoğlu)
This study aimed to investigate the electronic and structural characteristics of m-fluoroaniline and m-iodoaniline. Density functional theory (DFT) and CAMB3LYP/LanL2DZ methods were employed to determine various properties such as the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels, chemical reactivity descriptors, nonlinear optical properties, Mulliken population analysis, molecular electrostatic potential map, thermodynamic properties, and UV-Vis spectral analysis. In addition, the research explored the vertical and adiabatic ionization energy parameters of these molecules by constructing singly charged cation radicals using the same level theory. The obtained results were compared with experimental data from the literature.
The Role of Ion Properties in Reflectron System Design for Time-of-Flight Mass Spectrometry: A SIMION Simulation-Based Investigation
This study aimed to investigate the impact of multiple ion and reflectron parameters on the mass resolution of a reflectron time-of-flight mass spectrometry (ReTOF-MS) system. The charged particle optics simulation software, SIMION, was utilized to simulate ion behaviour within the reflectron and electrooptics sections of the system while optimizing the system design by altering the geometrical parameters of the electrodes and reflectron. Specifically, the effect of ion parameters, such as ion energy (IE), birth position (BP), statistical distribution (SD), and mass (m), on the mass resolution (R) of the system was evaluated. In addition, the influence of various reflectron parameters, including reflectron geometry, electrode position and shape, and applied voltages, was investigated. The simulations encompassed a broad range of ion and reflectron parameters, offering insights into the effects of these parameters on the system's mass resolution. The findings emphasize the necessity of optimizing the reflectron and electrooptics design of a time-of-flight mass spectrometry system.
Electrospun biotin- and streptavidin-coated quartz crystal microbalance surfaces: characterization and mass sensing performance using OpenQCM
(Erhan Ermek, Esra Ayan, Nurettin Tokay, Hasan DeMirci, Abdullah Kepceoğlu)
In this study, a quartz crystal microbalance (QCM) sensor surface was coated with biotin and/or streptavidin using the electrospinning method. The coated surfaces were analyzed using Raman spectroscopy method. QCM measurements were carried out using the OpenQCM platform. The results indicate that the electrospinning method can be used to coat QCM surfaces with biotin and/or streptavidin, and that the coated surfaces exhibit distinct morphological and spectroscopic properties. The QCM measurements showed that the coated surfaces are highly sensitive to changes in mass, indicating their potential for use in biosensing applications. Overall, this study provides new insights into the use of QCM sensors coated with biotin and/or streptavidin for biological sensing and detection applications.
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