A5088311588- Bone Tissue Engineering Materials
- Orthopaedic implants and arthroplasty
- Calcium Carbonate Crystallization and Inhibition
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetic and transport properties of perovskites and related materials
- Dental materials and restorations
- Titanium Alloys Microstructure and Properties
- Marine Sponges and Natural Products
- Paleontology and Stratigraphy of Fossils
- Catalytic Processes in Materials Science
- Nanoparticles: synthesis and applications
- Complementary and Alternative Medicine Studies
- Multiferroics and related materials
- Marine Biology and Environmental Chemistry
- Laser-Ablation Synthesis of Nanoparticles
- Dental Implant Techniques and Outcomes
- Advanced Condensed Matter Physics
- Coral and Marine Ecosystems Studies
- Catalysis and Oxidation Reactions
- Metal and Thin Film Mechanics
- Bone health and osteoporosis research
- Magnetic properties of thin films
- Nanoparticle-Based Drug Delivery
- Cephalopods and Marine Biology
Brazilian Center for Research in Energy and Materials
2013-2025
Centro Brasileiro de Pesquisas Físicas
2016-2025
Universidade Federal do Rio de Janeiro
2007-2018
Institut de Physique et Chimie des Matériaux de Strasbourg
2013
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
2013
University of Modena and Reggio Emilia
2009
Instituto di Biofisica
1993
Nanocomposite films prepared from starch (ST) in the presence of cellulose nanocrystals (CNCs) was performed using grape pomace as raw material. CNCs were obtained by acid hydrolysis and added to filmogenic solutions (1, 2, 5, 10 15 g/100 g ST). Cellulose, Nanocomposites characterized. Amorphous non-cellulosic materials removed presented values for CrI 64% 71% yield 12 70% Cellulose CNCs, respectively. showed smaller permeability addition 5 15% formed more opaque had improved tensile...
Despite the enormous economic, scientific and strategic value of Brazilian oceanic mid-shelf islands (BOMIs), biological communities these are still poorly known. An example is their fauna calcareous sponges (Porifera: Calcarea), with only six species described up to date. In present study, we analysed Calcinean from Abrolhos Archipelago four five (São Pedro e São Paulo Archipelago, Fernando de Noronha Rocas Atoll, Trindade Island), using both morphological molecular approaches for taxonomy....
Abstract Dentistry and orthopedics are undergoing a revolution in order to provide more reliable, comfortable long-lasting implants patients. Titanium (Ti) titanium alloys have been used dental total hip arthroplasty due their excellent biocompatibility. However, Ti-based human body suffer surface degradation (corrosion wear) resulting the release of metallic ions solid wear debris (mainly dioxide) leading peri-implant inflammatory reactions. Unfortunately, our current understanding...
A radio-frequency magnetron sputtering technique operating in right-angle geometry (RAMS) with high plasma confinement was revised to produce thin films (15–570 nm) of fluorine-substituted hydroxyapatite, FHA, adapted be used as nano-coatings for biomedical implants. An electron temperature Teff ≈ 9.0 eV and a density 1.2 × 1015 m− 3 assured the nucleation an amorphous hydroxyapatite phase on Si Ti surfaces. With aid Langmuir probe, RAMS energy tuned control coating stoichiometry ratio...
Bamboo, like wood, is a promising natural template for biobased devices that takes advantage of its hierarchical architecture, microarray channels, anisotropic mechanical and electrical properties. Herein we report low heat thermal treatment (HTT, 700-1000 °C) bamboo specimens to obtain bamboo-based graphitic with thermoelectric electrochemical The preservation the highly architecture three-dimensional carbon material (3D-CM) allowed adding specific properties depending on HTT pristine...
Right angle radio frequency magnetron sputtering technique (RAMS) was redesigned to favor the production of high-quality hydroxyapatite (HA) thin coatings for biomedical applications. Stoichiometric HA films with controlled crystallinity, thickness varying from 254 540 nm, crystallite mean size 73 and RMS roughness 1.7 ± 0.9 were obtained at room temperature by tuning thermodynamic properties plasma sheath energy. The energies adjusted using a suitable high magnetic field confinement 143 mT...
This work explores a new class of vortex/magnetite/iron oxide nanoparticles designed for magnetic hyperthermia applications. These nanoparticles, named Vortex Iron Particles (VIPs), are an alternative to the traditional Superparamagnetic Oxide Nanoparticles (SPIONs), since VIPs present superior heating power while fulfilling main requirements biomedical applications (low cytotoxicity and nonremanent state). In addition, demonstrates that synthesized also promote internalization aggregation...
Titanium (Ti) and its alloys are widely used in dental implants hip-prostheses due to their excellent biocompatibility. Growing evidence support that surface degradation corrosion wear processes, contribute implant failure, since the release of metallic ions particles generate local tissue reactions (peri-implant inflammatory reactions). The generated debris (particles at micron nanoscale) stay, a first moment, interface implant-bone. However, depending on size, they can enter blood...
There is no consensus as to the level of intraspecific morphological plasticity in calcareous sponges, and so many species described nineteenth century were lumped into a few supposedly very polymorphic during 20th century. Leucetta floridana was originally from Florida, but subsequently considered junior synonym Pacific microraphis, spite presence, L. only, two size classes tetractine spicules. We have compared, through DNA sequencing (ribosomal internal transcribed spacers, ITS1 ITS2)...
Background: Zinc-doped hydroxyapatite has been proposed as a graft biomaterial for bone regeneration. However, the effect of zinc on osteoconductivity is still controversial, since release and resorption calcium, phosphorus, in graft-implanted defects have rarely studied. Methods: Microspheres containing alginate either non-doped carbonated (cHA) or nanocrystalline 3.2 wt% zinc-doped cHA (Zn-cHA) were implanted critical-sized calvarial Wistar rats 1, 3, 6 months. Histological...
Abstract Precambrian cellular remains frequently have simple morphologies, micrometric dimensions and are poorly preserved, imposing severe analytical interpretational challenges, especially for irrefutable attestations of biogenicity. The 1.88 Ga Gunflint biota is a microfossil assemblage with different types qualities preservation across its numerous geological localities provides important insights into the Proterozoic biosphere taphonomic processes. Here we use synchrotron-based...
The experimental use of poly (alcohol-vinyl) (PVA) as a skin curative is increasing widely. However, the this hydrogel challenging due to its favorable properties for microbiota growth. association with silver nanoparticles (AgNPs) an antimicrobial agent turns match PVA dressing, it focuses on creating physical barrier avoid wound dehydration. When associated extracellular components, such collagen matrix, device obtained can create desired biological conditions act substitute. This study...