A5086442629- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Silicon and Solar Cell Technologies
- Nonlinear Optical Materials Studies
- Semiconductor materials and interfaces
- Semiconductor materials and devices
- Nanowire Synthesis and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- ZnO doping and properties
- Metal and Thin Film Mechanics
- Advancements in Semiconductor Devices and Circuit Design
- Photorefractive and Nonlinear Optics
- Metallic Glasses and Amorphous Alloys
- Photonic and Optical Devices
- Bone Tissue Engineering Materials
- Spectroscopy Techniques in Biomedical and Chemical Research
- Optical Coatings and Gratings
- Carbon Nanotubes in Composites
- Semiconductor Lasers and Optical Devices
- Advanced ceramic materials synthesis
- Ion-surface interactions and analysis
- Advanced Fiber Laser Technologies
- Phase-change materials and chalcogenides
- Quantum Dots Synthesis And Properties
German Jordanian University
2013-2023
The Ark
2015
Lebanese American University
2009-2013
University of Arkansas at Fayetteville
2003-2012
University of California, Berkeley
2005
Copper oxide nanoparticles (CuO-NPs) were synthesized at room temperature via a green method that is easy, efficient, eco-friendly, and low-cost. The aqueous extract of Bougainvillea leaves was used as reducing capping agent. Pure polyvinyl alcohol (PVA) CuO-PVA nano-composite thin films 13wt%, 30wt%, 40wt%, 51wt% prepared by the solution casting method. optical electrical properties CuO-NPs, pure PVA, analyzed using UV–visible spectrophotometer Keithley electrometer. band-gap energy (Eg)...
The (Si)GeSn films have been grown with and without carrier gases on Si substrate using a cold-wall ultra-high vacuum chemical vapor deposition system. Material characterization of the Ar gas X-ray diffraction transmission electron microscopy shows achievement higher quality films. Optical photoluminescence enhancement in material at 350 400ºC growth temperatures. Increase pressure results Sn incorporation intensity. Spectroscopic ellipsometry data confirms change GeSn bandgap towards lower energies.
Abstract The compositional and optical properties of an aluminum‐based transition‐metal alloy system (Au–Ag–Al) as advanced material for photonic applications are investigated. is fabricated by sequentially evaporating thin layers gold, silver, aluminum. thickness Al varied to reflect different percentages in the alloyed films. Alloying metals confirmed from shifts electronic binding energy pure elements through X‐ray photoelectron spectroscopy. current–voltage measurements demonstrate good...
High quality crystalline homoepitaxial silicon film has been deposited in single-step growth using ultra-high vacuum plasma-enhanced chemical vapor deposition at 250°C. An investigation on the effects of key parameters such as temperature, hydrogen dilution, and plasma power led to achievement balanced conditions. Material Characterization reveals that defect-free is due dominant role plays enhancing surface diffusion over selective etching amorphous phase. Absence crystal defects,...
The effect of a native silicon dioxide layer on metal-induced crystallization hydrogenated amorphous (a-Si:H) was investigated. Several samples, deposited by the plasma-enhanced chemical vapor deposition technique, were exposed to different ambients for times allow growth layers thicknesses. Then, aluminum used crystallize samples using at temperatures far below solid-phase temperature a-Si. In this study, we focused effects oxide and rates as determined X-ray diffraction. Following...
The plasma parameters and ion energy distributions (IED) of the dominant species in an Ar-H2 discharge are investigated with resolved mass spectrometer a Langmuir probe. plasmas generated conventional magnetron chamber powered at 150 W, 13.56 MHz hydrogen flow rates ranging from 0 to 25 sccm fixed argon gas rate 15 sccm. Various Hn+, SiHn+, SiHn fragments (with n = 1, 2, 3) together Ar+ ArH+ detected discharge. most important for film deposition is 0, 2). H affect content material. flux...
The multiconversion processes in optical parametric oscillators based on periodically poled LiNbO3 are investigated. Interpretations simultaneous quasi- and birefringent phase matching presented. Three three harmonic generation a multigrating crystal were observed. Two of the two harmonics quasi-phase matched, other conversion matched through birefringence crystal. primary process (omegap --> omegas + omegai) was obtained first-order matching. quasi-phase-matched occurred within higher...
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The oxidation levels of low-density lipoprotein (LDL) using the z-scan method was investigated. LDL samples were oxidized copper sulfate. amplitude signal modeled changes in oxidization levels.
Difference frequency mixing of strongly focused Gaussian beams in periodically poled LiNbO3 was investigated. The were inside the crystal without damage. Mixing cw and pulsed laser systems employed to minimize thermal lensing effects this crystal. A low-power 1.064-μm Nd:YAG beam used as pump, whereas signal came from a picosecond optical parametric oscillator. two independently made overlap focusing parameters about same. function developed by Boyd Kleinman for tightly extended crystals...
Aluminum-nickel nano-alloys were prepared by successive evaporation of nickel and aluminum ultra-thin films on silicon glass substrates at room temperature. Alloying was obtained through the spontaneous intermixing layers The shift in X-ray photoelectron spectroscopy (XPS) peaks pure metals indicated alloying process films. Using spectroscopic ellipsometry from UV to near infrared spectral range, optical properties these investigated. effective pseudo-dielectric functions direct inversion...
Appears in: ICERI2019 Proceedings Publication year: 2019Pages: 9668-9678ISBN: 978-84-09-14755-7ISSN: 2340-1095doi: 10.21125/iceri.2019.2357Conference name: 12th annual International Conference of Education, Research and InnovationDates: 11-13 November, 2019Location: Seville, Spain