Başlık için Elektrik - Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering listeleme
Toplam kayıt 92, listelenen: 70-89
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Passively Q-switched Cr:LiCAF laser with a saturable Bragg reflector
(Applied Physics B: Lasers and Optics, 2021)We present a low-cost multimode diode pumped passively Q-switched Cr:LiCAF laser operating near 800 nm. AlGaAs-based saturable Bragg reflectors (SBRs) were used for passive Q-switching. The system is experimentally ... -
pH-responsive carboxymethyl cellulose conjugated superparamagnetic iron oxide nanocarriers
(Journal of Scientific Perspectives, 2019)In the present study, polyethyleneimine (PEI) coated superparamagnetic iron oxide nanoparticles (SPIONs) having the size of 15 nm in diameter with high magnetic saturation (60 emu/g) have been prepared by co-precipitation ... -
Photocatalytic degradation of bodipy dye with a shungite based PVA hydrogel under UV-light irradiation
(Proceedings of Academics World International Conference, 2022)The contamination of water with dyes is a critical problem for the environment and a great deal of research is invested to produce the novel adsorbent composites with high adsorption capacity and at the same time gaining ... -
Physical layer security against eavesdropping in the internet of drones (IoD) based communication systems
(2019)rones or unmanned aerial vehicles (UAVs) communication technology, which has recently been thoroughly studied and adopted by 3GPP standard (Release 15) due to its dynamic, flexible, and flying nature, is expected to be ... -
Physical layer security for NOMA: requirements, merits, challenges, and recommendations
(2019)Non-orthogonal multiple access (NOMA) has been recognized as one of the most significant enabling technologies for future wireless systems due to its eminent spectral efficiency, its ability to provide an additional ... -
Precoded universal MIMO superposition transmission for achieving optimal coverage and high throughput in 6G and beyond networks
(Balkan Journal of Electrical and Computer Engineering, 2023)A wireless network can utilize its entire resources to serve users without any allocation and provide upgraded performances such as enhanced throughput and high reliability without interference among users. However, previous ... -
Protecting IMSI from fake base stations exploitation and spoofers impersonation in 5G and beyond cellular networks
(2022)Fifth-generation (5G) mobile networks require authenticated and fully secured transmissions between user devices and 5G base stations (gNodeB). In the current 5G technology standard, mobile devices cannot distinguish ... -
Secure and reliable IoT communications using nonorthogonal signals’ superposition with dual-transmission
(IEEE 31st PIMRC'20 - Workshop on 5G Mobile Communication System for Smart Factories, 2020)Ensuring secure communication for internet of things (IoT) has drawn much attention because of the lim itation in the use of conventional cryptographic techniques owing to the unique features of IoT devices such as ... -
Security in UAV/Drone communications
(CRC Press, 2019)This chapter highlights the latest advances and state-of-the-art research attempts performed towards applying physical layer security (PLS) to unmanned aerial vehicle (UAV) communication systems. It discusses some of the ... -
Shungite/Poly(vinyl alcohol) hybrid hydrogels: An efficient adsorption material for rare earth metals in aqueous media
(Wiley, 2023)Rare earth elements play a pivotal role in modern technologies, therebydriving an escalating demand for their procurement. To effectively extractthese elements from aqueous solutions, it is imperative to explore innovativesorbent ... -
Signal space diversity for improving the reliability performance of OFDM with subcarrier power modulation
(RS Open Journal on Innovative Communication Technologies, 2021)As the demand for higher data rates continues to increase exponentially, there is a shift towards exploring contemporary techniques that are likely to offer higher spectral efficiency. A new modulation technique termed as ... -
Sodium-Alginate based composite films for effective removal of congo red and coralene dark red 2B dyes: kinetic, isotherm and thermodynamic analysis
(MDPI, 2023)The present study aimed to investigate the adsorption capacity of two anionic dyes, namely, Congored (CR) and Coralene Dark Red2B (DR), onto prepared alginate (Alg) and chitosan(Cs) biopolymer films. The two biopolymers ... -
A spectrally efficient OFDM-based modulation scheme for future wireless systems
(2019 Scientific Meeting on Electrical-Electronics and Biomedical Engineering and Computer Science, EBBT 2019, 2019)A novel modulation technique termed as orthogonal frequency division multiplexing with subcarrier power modulation (OFDM-SPM) for efficient data transmission in wireless communication systems is proposed. OFDM-SPM uses the ... -
Statistical approaches for the analysis of dependency among neurons under noise
(MDPI, 2020)Neuronal noise is a major factor affecting the communication between coupled neurons. In this work, we propose a statistical toolset to infer the coupling between two neurons under noise. We estimate these statistical ... -
A sub-cm3 energy harvester for in-vivo biosensors
(Microelectronic Engineering, 2020)The development of a kinetic energy harvester for in-vivo applications is reported. Consisting of an untethered magnetic platform encased by two stators, the device converts normal body movements into electrical power. A ... -
Synthesis and characterization of Near-Infrared (NIR)-light triggerable upconverting nanoparticles to enhance activity of immobilized l-asparaginase
(4. EURASIA Biochemical Approaches & Technologies-4.EBAT Conference, 2022)In this study, PEG-L-ASNase enzyme was immobilized on UCNPs and its activity was improved by NIR. NaYF4: Yb3+, Er3+/PEI UCNPs were characterized to observe structural and morphological changes before/after enzyme immobilization. ... -
Temperature Dependence of Emission Cross Section and Fluorescence Lifetime of Cr:Colquiriites in 78-618 K Range
(Optica Advanced Photonics Congress 2022, 2022)We have measured the temperature dependence of fluorescence lifetime and emission cross section in Cr:LiCAF, Cr:LiSGaF and Cr:LiSAF in the 78-618 K range. Our results confirm their potential as high-power ultrafast sources ... -
Temperature dependence of the emission cross-section and fluorescence lifetime in Cr:LiCAF, Cr:LiSAF, and Cr:LiSGaF between 78 K and 618 K
(2023)Cr:Colquiriites (Cr:LiCAF, Cr:LiSAF, and Cr:LiSGaF) are well-known for their broad emission bands in the near-infrared region. Unfortunately, due to their relatively weak thermomechanical strength, average powers from ... -
Thermal and population lensing of Yb:YLF at cryogenic temperature
(2023)We present what is, to our knowledge, the first detailed study of thermal and population lensing in cryogenically cooled Yb:YLF. Using a rod-shaped a-cut Yb:YLF crystal, the thermal lens strength is measured as a function ... -
Transfer entropy
(MDPI AG, 2018)Statistical relationships among the variables of a complex system reveal a lot about its physical behavior. Therefore, identification of the relevant variables and characterization of their interactions are crucial for a ...
