A5013319899- Semiconductor Quantum Structures and Devices
- Thermal properties of materials
- Photonic and Optical Devices
- Spectroscopy and Laser Applications
- Thermography and Photoacoustic Techniques
- Electronic and Structural Properties of Oxides
- Transition Metal Oxide Nanomaterials
- Composite Material Mechanics
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Photoacoustic and Ultrasonic Imaging
- Advanced Thermoelectric Materials and Devices
- Speech and dialogue systems
- Radiative Heat Transfer Studies
- Quantum Dots Synthesis And Properties
Imam Abdulrahman Bin Faisal University
2021-2023
We investigate optical absorption coefficients and changes in the refractive index single- double-step GaAs/AlGaAs quantum wells under influence of magnetic, electric, intense laser fields. For single-step wells, increasing intensity external electric fields induces a red-shift total coefficient change increases their amplitudes; however, magnetic field generates blueshift index. transition energy between ground first excited state is strongly decreased. In addition, incur blue shift when...
Nickel foam of various pore-size coated graphene thin film 200 nm thickness was investigated as a function the pore size. The structural properties were using scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) analysis. optical analyzed through UV–Visible reflectance Photoluminescence spectra. Hall Effect Electrochemical impedance spectroscopy techniques used to study electrical dielectric properties. thermal measured photothermal deflection...
The aim of this work is to investigate the influence pores density on thermal properties Nickel-graphene foam sheets. study demonstrates a detailed theoretical and experimental treatment three-dimensional photothermal deflection (PTD) technique, under laser excitation nickel various porosity coated graphene thin film 200 nm thickness. Green's function integral transformations are used in treatment. effect certain parameters sensitivity PTD technique with respect variation specimens' pore was...
We investigate optical absorption coefficients and changes in the refractive index single- double-step GaAs/AlGaAs quantum wells under influence of magnetic, electric, intense laser fields. For single-step wells, increasing intensity external electric fields induces a red-shift total coefficient change increases their amplitudes; however, magnetic field generates blueshift index. transition energy between ground first excited state is strongly decreased. In addition, incur blue shift when...
Al0.1Ga0.9As nano-films of various thicknesses were deposited on GaAs substrate and examined using Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), UV–Visible spectrophotometry, Photoluminescence (PL), Electrochemical Impedance Spectroscopy (EIS), Photothermal Deflection (PTD). The PTD technique is used to analyze the effect thickness thermal properties showed its sensitivity weak structural changes. By increasing thickness, crystallinity was degraded, an infrared emission...