A5076773179- Luminescence Properties of Advanced Materials
- Radiation Detection and Scintillator Technologies
- Diamond and Carbon-based Materials Research
- Ion-surface interactions and analysis
- High-pressure geophysics and materials
- Solid-state spectroscopy and crystallography
- Perovskite Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Semiconductor materials and devices
- Glass properties and applications
- Nuclear materials and radiation effects
- Metal and Thin Film Mechanics
- Optical properties and cooling technologies in crystalline materials
- ZnO doping and properties
- Terahertz technology and applications
- Ga2O3 and related materials
- Nuclear Materials and Properties
- Radiation Effects and Dosimetry
- Thermography and Photoacoustic Techniques
- Nuclear Physics and Applications
- Infrared Thermography in Medicine
- Catalytic Processes in Materials Science
- GaN-based semiconductor devices and materials
- Atomic and Subatomic Physics Research
- Laser-Ablation Synthesis of Nanoparticles
Universidad de Sonora
2015-2024
Universidad de Hermosillo
2016
Universidad Nacional Autónoma de México
2011
New York University
1985-1987
Effects of Ag doping on the crystallinity and optical properties zinc oxide (ZnO) nanoparticles have been studied by x-ray diffraction, diffuse reflectance spectroscopy, micro-Raman, photoluminescence spectroscopy. It has observed that while Ag-doping at low concentration improves optoelectronic ZnO nanostructures, high concentrations drastically modify emission behavior lattice vibrational characteristics nanostructures. High content in nanostructures causes deformation, induces silent...
An improved synthetic method has been designed and demonstrated to reproducibly generate hollow gold nanospheres (HGNs) with strong surface plasmon resonance (SPR) absorption in the near infrared (NIR). The HGNs have synthesized via galvanic replacement of cobalt while utilizing different amounts poly(vinylpyrrolidone) (PVP) as a template stabilizing agent. Ninety percent syntheses performed by this modified resulted an SPR 800 nm, which is highly desirable for biomedical applications such...
Facile and reproducible SERS signals from Shewanella oneidensis were obtained utilizing silver nanoparticles (AgNPs) nanowires (AgNWs). Additionally, images identify the distribution of hot-spots. One important observation is synergistically enhanced signal when AgNPs AgNWs are used in conjunction, due to constructively electromagnetic field.
We report the synthesis of hollow Au–Ag bimetallic nanoparticles with high photothermal stability under NIR irradiation.
Hydrothermally grown SnO2 and SnO2:Eu nanoparticles of 4–11 nm size range were analyzed by photoluminescence (PL) therrmoluminescence (TL) spectroscopy to study the effect Eu-doping on their emission behaviors. It has been observed that most incorporated Eu3+ ions remain at interstitial sites lattice. High Eu-contents in generate lattice deformation, formation Eu3+/Eu0 clusters sites, or segregation surfaces. Formation Eu enhances electronic defect density crystal lattice, reorganizes...
ZnO and ZnO:Yb thermoluminescence nanophosphors have been developed tested under beta radiation. Spherical nanoparticles of sizes ranging from 130to1200nm were prepared through a glycol mediated chemical synthesis. The Yb doping had quenching effect compared to undoped ZnO. 5% concentration produced low fading, single glow peak structure, dose linearity behavior adequate for dosimetry applications. nanophosphor has great potential as dosimeter monitoring in ionizing radiation fields.
Nanostructured ZnO was deposited on different substrates (Si, SiO 2 , and Au/SiO ) by an enhanced physical vapor deposition technique that presents excellent luminescent properties. This consists in a horizontal quartz tube reactor uses ultra-high purity Zn UHP oxygen as precursors. The morphology structure of grown this work were studied electron microscopy X-ray diffraction. XRD patterns revealed the highly crystalline phase wurtzite polycrystalline structure, with preferred (10 1 1)...