A5023577194- Solid State Laser Technologies
- Glass properties and applications
- Luminescence Properties of Advanced Materials
- Nonlinear Optical Materials Studies
- Carbon Nanotubes in Composites
- Heat Transfer and Boiling Studies
- Thermal properties of materials
- Magnetic Properties and Synthesis of Ferrites
- Carbon and Quantum Dots Applications
- Thermography and Photoacoustic Techniques
- Graphene research and applications
- Nanofluid Flow and Heat Transfer
- Maternal and Neonatal Healthcare
- Nanopore and Nanochannel Transport Studies
- Iron oxide chemistry and applications
- Nanoparticle-Based Drug Delivery
- Graphene and Nanomaterials Applications
- Advanced Fiber Laser Technologies
- Photorefractive and Nonlinear Optics
- Laser Design and Applications
Universidade Federal de Juiz de Fora
2013-2022
Polish Academy of Sciences
2022
Institute of Physical Chemistry
2022
Universidade Federal do Espírito Santo
2022
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2014
Centre de Recherche sur les Ions, les Matériaux et la Photonique
2014
Centre National de la Recherche Scientifique
2014
The present work reports the luminescence properties and laser operation of a Nd3+-doped (TeO2-ZnO) bulk tellurite glass. spectroscopic data are analyzed within framework Judd–Ofelt formalism results used in conjunction with fluorescence lifetime emission measurements to derive values for quantum efficiency stimulated cross section considered F43/2→I411/2 infrared transition around 1062.5 μm. Continuous-wave action is achieved first time this glass by pumping sample inside standard...
Graphene quantum dots (GQDs) are nanosized systems that combine beneficial properties typical of graphenic materials (such as chemical stability, biocompatibility and ease preparation from low-cost precursors) with remarkable photoluminescent features. GQDs well-known for their low cytotoxicity being promising candidates in applications, such bioimaging, optoelectronics, electrochemical energy storage, sensing catalysis, among others. This work describes a simple synthesis GQDs, starting an...
In this study, structural and thermal properties of dispersed carbon nanomaterials such as single-wall nanotubes graphene in water are investigated. Carbon nanostructures the fluid through surfactant ultrasonication treatment. Structural studies samples carried out by Raman spectroscopy which show that dispersion process leads to formation two kind nanofluids: nanostructured based ones. The first form dots. diffusivities measured lens technique. Contrary what is normally expected our...
Preliminary CW laser results with a 5%Yb:2%Tm:CaF2 single crystal are obtained at 1.85μm 140mW output power and 17% slope efficiency by pumping 980 nm high brightness fiber laser.
Here, we report CA Z-Scan results for 80TeO 2 .20ZnO: x Dy 3+ glasses ( =1 . 0,2 0mol%). Both samples presented a self-focusing lens like behavior, with nonlinear refractive index varying from (5 87 ± 0 04)10 − 15 cm /W to (20 37 09)10 /W.