Browsing Nanoteknoloji Mühendisliği Bölümü Makale Koleksiyonu by Title
Now showing items 55-74 of 75
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Optical and nano-mechanical characterization of c-axis oriented AlN film
(2022)This paper reports the temperature effects on the optical properties of metalorganic vapour-phase epitaxy (MOCVD) grown c-axis oriented AlN epilayer thin film studied by in-situ high-temperature spectroscopic ellipsometry. ... -
Optical and nano-mechanical characterization of c-axis oriented AlN film
(19.05.2022)This paper reports the temperature effects on the optical properties of metalorganic vapour-phase epitaxy (MOCVD) grown c-axis oriented AlN epilayer thin film studied by in-situ high-temperature spectroscopic ellipsometry. ... -
Performance enhancement of AlGaN deep-ultraviolet laser diode using compositional Al-grading of Si-doped layers
(2022)Achieving high threshold current density and high optical confinement are big challenges in the realization of high-performance aluminum gallium nitride (AlGaN)-based deep-ultraviolet (DUV) laser diode (LD). In this work, ... -
Prediction of average shape values of quartz particles by vibrating disc and ball milling using dynamic image analysis based on established time-dependent shape models
(2022)Although grinding kinetics has been the subject of many researches, there is no research examining the shape kinetics of particles ground by different mills using dynamic image analysis (DIA) in the literature. In this ... -
Production of phenylalanine-reduced soymilk for phenylketonuria patients
(Codon Publishing Co., 2023)Phenylketonuria (PKU) is a hereditary disease caused by the deficiency of phenylalanine (Phe) hydroxylase enzyme or its cofactor tetrahydrobiopterin. Treatment involves a Phe-restricted diet, although food options are ... -
Rheology and sensory properties of microencapsulated propolis-enriched stirred-type yogurt
(Codon Publishing Co., 2023)In this study, the rheological, sensory and syneristic properties of yogurt enriched with 0.5%, 1% and 2% microencapsulated propolis (MP) was investigated. The viscosity measurements of stir-type yoghurt were performed ... -
Sensitivity of indium molar fraction in InGaN quantum wells for near-UV light-emitting diodes
(2022)InGaN-based quantum wells (QWs) have higher threading dislocation density (TDD) in InGaN Light-emitting diode (LED). Despite of higher TDD, variation of Indium (In) molar fraction in the QW generate localized excitons ... -
Synthesis of Multifunctional Organic Nanoparticles Combining Photodynamic Therapy and Chemotherapeutic Drug Release
(2022)Cancer is a group of diseases that are caused by uncontrolled proliferation of cells in various parts of the body and it is one of the most studied diseases worldwide. Photodynamic therapy (PDT) is a treatment that uses ... -
Systematic optical study of high-x InxGa1-xAs/InP structures for infrared photodetector applications
(10.12.2022)Optical and structural properties in high-x InxGa1-xAs (x > 0.65) samples with varying indium concentration grown on InP (100) substrate are reported. By increasing the indium fraction, it was found by the high-resolution X-ray ... -
The effect of structure parameters and static electric field on the nonlinear optical properties of triple InGaAs/GaAs quantum well
(ScienceDirect, 2023)Optical properties of In x Ga 1-x As/GaAs triple QW are studied for different quantum well thicknesses and external electric fields. The effective mass approximation is used to calculate the band alignment of the structure. ... -
The influence of TMGa pre-flow time and amount as surfactant on the structural and optical properties of AlN epilayer
(2022)AIN is used as a template layer for deep UV (DUV) emitter and detector applications, because of its wide bandgap and high thermal conductivity. In this study, trimethylgallium (TMGa) source is used as surfactant to improve ... -
The influence of TMGa pre-flow time and amount as surfactant on the structural and optical properties of AlN epilayer
(3.06.2022)AIN is used as a template layer for deep UV (DUV) emitter and detector applications, because of its wide bandgap and high thermal conductivity. In this study, trimethylgallium (TMGa) source is used as surfactant to improve ... -
The nonlinear optical rectification, second and third harmonic generation coefficients of Konwent potential quantum wells
(Springer, 2022)We have theoretically investigated the effect of structure parameters and applied external fields on the Ga1−xAlxAs/GaAs Konwent quantum well structure. Results of theoretical simulation have clarified the impact of applied ... -
Theoretical analyses of the carrier localization effect on the photoluminescence of In-rich InGaAs layer grown on InP
(5.01.2022)The free buffer InGaAs/InP structure has been elaborated by Metal Organic Vapor Phase Epitaxy (MOVPE). High indium content is chosen to reduce the bandgap energy of the ternary material with direct bandgap to be promoted for ... -
Theoretical analyses of the carrier localization effect on the photoluminescence of In-rich InGaAs layer grown on InP
(2022)The free buffer InGaAs/InP structure has been elaborated by Metal Organic Vapor Phase Epitaxy (MOVPE). High indium content is chosen to reduce the bandgap energy of the ternary material with direct bandgap to be promoted ... -
Vcsel tabanlı yüksek güçlü yarı iletken lazerler
(15.01.2021)VCSEL’ler (vertical-cavity surface-emitting laser, düşey- kovuklu yüzey-ışımalı lazer) yirmi yılı aşkın bir süredir giderek gelişen veri iletişimi (datacom) alanının anahtar bileşenlerinden birisidir. Bunun yanında son ... -
ystematic optical study of high-x InxGa1-xAs/InP structures for infrared photodetector applications
(2022)Optical and structural properties in high-x InxGa1-xAs (x > 0.65) samples with varying indium concentration grown on InP (100) substrate are reported. By increasing the indium fraction, it was found by the high-resolution X-ray ... -
Yüksek Güç-Frekans Uygulamaları Için MOCVD ile Epitaksiyel AlN Kristalinin Büyütülmesi, Katkılanması, Karakterizasyonu ve Aygıt Üretimi
(15.03.2021)Bu projede yüksek güç-frekans uygulamaları için MOCVD (metal organik kimyasal buhar depolama) ile epitaksiyel AlN kristalinin büyütülmesi, katkılanması, karakterizasyonu ve aygıt üretimi yapılarak diyot karakteristiklerinin ... -
Yüksek Güç-Frekans Uygulamaları Için MOCVD ile Epitaksiyel AlN Kristalinin Büyütülmesi, Katkılanması, Karakterizasyonu ve Aygıt Üretimi
(15.03.2021)Bu projede yüksek güç-frekans uygulamaları için MOCVD (metal organik kimyasal buhar depolama) ile epitaksiyel AlN kristalinin büyütülmesi, katkılanması, karakterizasyonu ve aygıt üretimi yapılarak diyot karakteristiklerinin ... -
ZnO/Al2O3 layered structures deposited by RF magnetron sputtering on glass: growth characteristics, optical properties, and microstructural analysis
(12.08.2021)In this study, Al2O3 thin films of different thicknesses (50 nm, 100 nm, 150 nm, 200 nm, and 250 nm) were, first, grown using RF magnetron sputtering technique on glass substrate at 30 °C temperature, with 120Wpower value. ...