Browsing by Author "Salmanogli, A."

Now showing 1 - 5 of 5

Citation - Scopus: 0
Design and Modeling Interdigitated Capacitor - Spiral Inductor Resonator for Optical Pressure Sensor
(Institute of Electrical and Electronics Engineers Inc., 2021) Demirel, M.; Duyguluer, G.; Öztürk, M.; Salmanogli, A.; Gecim, H.S.; 182579
In this study, an optical pressure sensor is designed to sense a force. To achieve that, an interdigitated capacitor connected to a spiral inductor that oscillates at GHz region is proposed to be designed. To sense a force with very low amplitude, some different materials are applied as a dielectric material between the layers of the interdigitated capacitor. Thus, by applying the force, the circuit's capacitance is changed due to the displacement of the selected dielectric. This leads to change of the circuit's scattering parameters which lets to sense the lowest scale of the pressure possible. For simulation, the circuit is designed in COMSOL, theoretically studied the scattering parameters and the effect of the force on the circuit characteristic and finally, Advanced Design System is used to optimize the parameters for this specific aim. © 2021 Chamber of Turkish Electrical Engineers.
Citation - Scopus: 0
Design and Modeling of Very Narrow Band-pass Radio Frequency Filter for Optical Pressure Sensor
(Institute of Electrical and Electronics Engineers Inc., 2021) Ispak, T.S.; Basarancr, G.; Ceylan, S.; Salmanogli, A.; Gecim, H.S.; 182579
In this study, an optical pressure sensor is designed to sense a force on the scale of 100 nN. For this purpose, a very narrow radio frequency band-pass filter is designed and modeled to detect the optical pressure force. The center frequency of the filter is fixed in L-band. Thus, by applying an external force, the circuit's characteristics such as scattering parameters and the center frequency of the filter is changed. That is the method particularly employed to sense a very low scale optical pressure. In this study, the open-stub technique is used to design the radio frequency filter and results are compared with the lumped element-based circuit models. Also, the circuit design is simulated in COMSOL Multiphysics, and the scattering parameters are studied. Finally, the circuit is optimized for the specific aim using Advanced Design System software. © 2021 Chamber of Turkish Electrical Engineers.
Citation - Scopus: 20
Entanglement Sustainability in Quantum Radar
(Institute of Electrical and Electronics Engineers Inc., 2020) Salmanogli, A.; Gokcen, D.; Gecim, H.S.; 182579
In this study, some important parts of a quantum radar are designed using the quantum electrodynamics theory and significantly focused on entanglement conservation. Quantum radar is generally defined as a detection sensor that utilizes the microwave photons like a classical radar and simultaneously employs quantum phenomena to improve detection, identification, and resolution capabilities. However, the entanglement is so fragile, unstable, and difficult to preserve for a long time. Also, more importantly, the entangled states have a tendency to leak away due to the noise. The points mentioned enforces that the entangled states should be carefully studied at each step of the quantum radar detection processes such as the creation of the entangled photons in the tripartite system, the amplification of the photons, the propagation into the atmosphere, and the reflection from the target. At each step, the parameters related to the real mediums and target material can affect the entangled states to leak away easily. The results of simulations indicate that the features of the tripartite system and amplifier are so important to lead the detected photons to remain entangled with the optical modes. Nonetheless, it is found that a lot of entangled photons lose the related non-classical correlation. © 2020 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See https://www.ieee.org/publications/rights/index.html for more information.
Citation - WoS: 3
Citation - Scopus: 2
Quantum correlation of microwave two-mode squeezed state generated by nonlinearity of InP HEMT
(Nature Portfolio, 2023) Salmanogli, A.
This study significantly concentrates on cryogenic InP HEMT high-frequency circuit analysis using quantum theory to find how the transistor nonlinearity can affect the quantum correlation of the modes generated. Firstly, the total Hamiltonian of the circuit is derived, and the dynamic equation of the motion contributed is examined using the Heisenberg-Langevin equation. Using the nonlinear Hamiltonian, some components are attached to the intrinsic internal circuit of InP HEMT to address the circuit characteristics fully. The components attached are arisen due to the nonlinearity effects. As a result, the theoretical calculations show that the states generated in the circuit are mixed, and no pure state is produced. Accordingly, the modified circuit generates the two-mode squeezed thermal state, which means one can focus on calculating the Gaussian quantum discord to evaluate quantum correlation. It is also found that the nonlinearity factors (addressed as the nonlinear components in the circuit) can intensely influence the squeezed thermal state by which the quantum discord is changed. Finally, as the primary point, it is concluded that although it is possible to enhance the quantum correlation between modes by engineering the nonlinear components; however, attaining quantum discord greater than unity, entangled microwave photons, seems a challenging task since InP HEMT operates at 4.2 K.
Citation - Scopus: 0
Silicon-based core-shell nanoparticle's nanobiomedical characterisation
(Inderscience Publishers, 2019) Sana, F.A.; Farhadnia, F.; Salmanogli, A.
Using functionalised nanoparticles in nanobiomedical applications cause to raise questions about unintentional effect of such powerful agents on the human body. In other words, the study of nanoparticle toxicity can be considered as a curtail key for the biological applications. In this study, the core/shell nanoparticles such as Si/Au and SiO2/Au were synthesised and functionalised with some biological elements. For satisfying some medical standards and biomedical critical test conditions, a few in-vitro assays as cytotoxicity and haemolysis should be done. For this reason, cytotoxicity and haemolytic effects of the functionalised nanoparticles such as Si/Au/biotin and SiO2/Au/biotin and their derivatives were evaluated on Hep-G2 cells and humane red blood samples. It is shown that cytotoxicity and haemolysis effects of the all synthesised nanoparticles are concentration-dependent. Also, the results are shown that most cytotoxicity and haemolytic effects are observed for Si/Au and SiO2/Au without biotin groups after 48 hours and 30 minutes, respectively. © 2019 Inderscience Enterprises Ltd.