Elektrik Elektronik Mühendisliği Bölümü Yayın Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/411

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Citation Count: Meral, S...et al. "Biomedical Device for Early Breast Cancer Detection: Device Performance Improving By Plasmonic-Photonic Mask",Bioimaging 2019 - 6th International Conference On Bioimaging, Proceedings, pp. 161-166, (2019).
Biomedical Device for Early Breast Cancer Detection: Device Performance Improving By Plasmonic-Photonic Mask
(SciTePress, 2010) Meral, Sanem; Yalçınkaya, Ezel; Eroğlu, Metin; Salmanogli, Ahmad; Geçim, H. Selçuk; 280089
In this article, a new device to detect breast cancer at an early stage, is presented. The main advantages of the device are its easy operational procedure, portability, high accuracy due to usage of plasmonic-photonic mask and the low cost. In fact, the novelty of the device presented is to apply the new mask called plasmonic-photonic mask for precise analysis of the captured images. In the early stage of the work, a phantom model is employed and the operation of the system is realized. It is shown that the image processing toolbox is safely matched with the device. It should be noted that for the in-vivo imaging, the device should be completed and equipped with a high accuracy charge coupled device (CCD) and laser. © 2019 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved
Citation Count: Salmanoğli, Ahmad (2019). "Entangled two-photon interference", Optik, Vol. 179, pp. 909-913.
Entangled two-photon interference
(2019) Salmanoğli, Ahmad; 280089
This article proposes a theoretical solution to one of the original problems of the double-slit experiment, which expresses that it is impossible to identify the photon's path without disturbing it We contend that using the entangled two-photon (signal and idler photons) and inserting a double-slit into the beam of signal (idler) photon, it is possible to distinguish the path of signal (idler) photon, just by the detection of the idler (signal) photon. Basically, the signal and idler photons are highly correlated to each other due to the momentum conservation. Indeed, the photon-photon correlation originates the nonlocal interference effect, so using this effect, lets us know about which path the photon goes through, with its conjugate photon's position detection rather than its detection.
Citation Count: Salmanogli, Ahmad; Gokcen, Dincer; Gecim, H. Selcuk, "Entanglement of Optical and Microcavity Modes by Means of an Optoelectronic System", Physical Review Applied, Vol. 11, No. 2, (2019).
Entanglement of Optical and Microcavity Modes by Means of an Optoelectronic System
(Amer Physical Soc, 2019) Salmanogli, Ahmad; Gökçen, Dinçer; Geçim, H. Selçuk; 280089
Entanglement between optical and microwave cavity modes is a critical issue in illumination systems. Optomechanical systems are utilized to introduce coupling between the optical and microwave cavity modes. However, due to some restrictions of the optomechanical system, especially sensitivity to the thermal photon noise at room temperature, an alternative optoelectronic system is designed to address the problem. We study a method by which it may be possible to remove the mechanical part of the previous systems to minimize the thermally generated photons. Unlike optomechanical systems, in our system, the optical mode is directly coupled to the microwave cavity mode through the optoelectronic elements without employing any mechanical parts. The utilized approach leads to generating the entangled modes at room temperature. For this purpose, the dynamics of the motion of the optoelectronic system is theoretically derived using the Heisenberg-Langevin equations from which one can calculate the coupling between optical and microwave cavity modes. The direct coupling between the optical and microwave cavity modes is the most important feature and is achieved through the combination of the photodetector and a Varactor diode. Hence, by controlling the photodetector current, that is, the photocurrent, depending on the optical cavity incident wave and the Varactor diode-biased voltage, the coupling between the optical and microwave cavity modes is established. The voltage across the Varactor diode also depends on the generated photocurrent. Consequently, our results show that the coupled modes are entangled at room temperature without the requirement for any mechanical parts.
Citation Count: Salmanoğli, Ahmad (2020). "Identification of Circulating Tumor Cells Using Plasmonic Resonance Effect: Lab-on-a- Chip Analysis and Modelling", Journal of Nanoscience and Nanotechnology, Vol. 20, No. 3, pp. 1341-1350.
Identification of Circulating Tumor Cells Using Plasmonic Resonance Effect: Lab-on-a- Chip Analysis and Modelling
(2020) Salmanoğli, Ahmad; 280089
Circulating tumor cells are widely used as biomarkers of cancer. Although early detection of these cells is vital for diagnosis and prognosis of deadly cancer, it is still a challenging issue due to the complex matrix of blood and their low presence in the bloodstream. In the present study, we propose a micro-channeled lab-on-a-chip system using two distinct methods based upon dielectrophoretic force and electrical properties of cells to increase the cell detection capability and identification efficiency and accuracy. The dielectric properties of cells contribute to the difference between negatively charged residues on the cell surface. Firstly, the dielectrophoretic force is used to separate background cells; then, the proposed high-accuracy identification method is used to better examine and study the unidentified cells. In the next phase, by amplification of the current of the unidentified cells flowing through the nanoparticle plasmonic resonance effects, the microfluidics output efficiency is significantly improved. As a result, highly accurate cell identification is achieved by taking advantage of the nanoparticle plasmonic properties. Overall, nanoparticle scattering in the plasmonic resonance condition, as well as their plasmonic hybridization, can improve output signal-to-noise ratio.
Citation Count: Salmanogli, Ahmad, "Modification of a plasmonic nanoparticle lifetime by coupled quantum dots", Physical Review A, Vol. 100, No. 1, (2019).
Modification of a plasmonic nanoparticle lifetime by coupled quantum dots
(Amer Physical Soc, 2019) Salmanogli, Ahmad; 280089
In this study, the interaction between a plasmonic nanoparticle and coupled quantum dots is investigated to identify how the coupled particles can manipulate the plasmonic nanoparticle decay rate. This subject is very important, because most applications of the plasmonic system are restricted due to the nanoparticle decay rate and the related losses. Therefore, in the present work, we try to find out how and by which method the plasmonic nanoparticle decay rate can be manipulated. For this purpose, a plasmonic system containing a nanoparticle coupled to some small quantum dots is designed. The system dynamics of motions are analyzed with Heisenberg-Langevin equations. These equations are analyzed to study the effect of the plasmonic nanoparticles on the quantum dots' decay rate. In the following, as an interesting point, the quantum dot coupling influence on the nanoparticle's decay rate is theoretically analyzed in the transient and steady-state conditions. Additionally, a theoretical formula is derived by which one can explicitly find the dependency of the modified decay rate of the plasmonic nanoparticle on the number of the coupled quantum dots and the coupling strength. The simulation results show that it is possible to effectively control the nanoparticles' decay rate with regard to the application for which they are utilized.
Citation Count: Salmanoğli, Ahmad; Gökçen, Dinçer (2020). "Optoelectronic based Quantum Radar: Entanglement Sustainability Improving at High Temperature", Sensors.
Optoelectronic based Quantum Radar: Entanglement Sustainability Improving at High Temperature
(2020) Salmanoğli, Ahmad; Gökçen, Dinçer; 280089
Citation Count: Salmanoğli, Ahmad; Gökçen, Dinçer; Geçim, H. Selçuk (2019). "Plasmonic Effect on Quantum-Dot Photodetector Responsivity", IEEE Sensors Journal, Vol. 19, no. 10, pp. 3660-3667.
Plasmonic Effect on Quantum-Dot Photodetector Responsivity
(2019) Salmanoğli, Ahmad; Gökçen, Dinçer; Geçim, H. Selçuk; 280089; 182579
In this paper, we analyze and simulate the plasmonic effect on the quantum-dot photodetector responsivity. For this purpose, a plasmonic-based quantum-dot photodetector is designed in which a few quantum dots are embedded in the hot-spot regions of the plasmonic nanoparticles, wherein a high-intensity localized field is created. Notably, due to the maximum overlapping of the plasmonic field with the quantum dots at the hot spot, some of the optical characteristics of the quantum dot, particularly the spontaneous emission decay rate, are changed. This paper focuses on the engineering of the decay rate, through which we found that the quantum-dot photodetector responsivity is strongly enhanced with the order of 100 times at the visible range. For analyzing the proposed system, we first work on the plasmonic effect of the nanoparticle on the quantum-dot lifetime using the Heisenberg-Langevin equations. It is shown that by embedding the quantum dots at the hot spot of the nanoparticle, the decay rate of the quantum dot is dramatically influenced. In the following, plasmonic-quantum dot system responsivity is theoretically examined using a time-varying perturbation theory. Using this approach is necessary because the spontaneous emission cannot be analyzed with the classical methods. Consequently, it is proved that using plasmonic effect leads to enhanced photodetector responsivity, suggesting that even very small incoming signals are detectable.
Citation Count: Salmanogli, Ahmad; Gecim, H. Selcuk; Piskin, Erhan, "Plasmonic System as a Compound Eye: Image Point-Spread Function Enhancing by Entanglement", Ieee Sensors Journal, Vol. 18, No.14, pp. 5723-5731, (2018)
Plasmonic System as a Compound Eye: Image Point-Spread Function Enhancing by Entanglement
(IEEE-INST Electrical Electronics Engineers INC, 2018) Salmanogli, Ahmad; Geçim, H. Selçuk; Pişkin, Erhan; 280089
In this paper, we introduce a plasmonic system that can operate as a compound eye. Based on the advantages mentioned in some previous works for the compound eye, we designed a plasmonic system that contains faraway plasmonic nanoparticles (NPs) that act independently like an ommatidium in the compound eye. This plasmonic system performance is analyzed with full quantum theory by which it is theoretically proved that with the interaction of light with NPs, the scattering light, and generated phonon can be entangled due to the NPs Ohmic loss. Consequently, the quantum states of the system before, after, and during the absorption and scattering of the incident photon, were quantum mechanically subjected. By the introduced theoretical formula and modeling results, it is shown that the plasmonic system can operate similar to the compound eye, if the critical parameters, such as system's focus point, NPs scattering angle, and inter-distance between NPs are suitably designed. More importantly, due to the entanglement between the scattering light and the generated phonon, it is theoretically proved that the point-spread function is improved when the traditional lens in the compound eye is replaced by the plasmonic NPs leading to an enhanced image resolution. Finally, a simple conceptual design of the plasmonic system is presented and then a few contributed modeling results are introduced.

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