A5076394255- Carbon Nanotubes in Composites
- Electrospun Nanofibers in Biomedical Applications
- Liquid Crystal Research Advancements
- Advanced Materials and Mechanics
- Mechanical and Optical Resonators
- Graphene research and applications
- Photonic Crystals and Applications
- Graphene and Nanomaterials Applications
- Nanopore and Nanochannel Transport Studies
- Conducting polymers and applications
- Molecular Junctions and Nanostructures
- Advanced Sensor and Energy Harvesting Materials
- Microfluidic and Bio-sensing Technologies
- Wound Healing and Treatments
- Bone Tissue Engineering Materials
- Nanotechnology research and applications
- Microplastics and Plastic Pollution
- Silk-based biomaterials and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced ceramic materials synthesis
- Pickering emulsions and particle stabilization
- 3D Printing in Biomedical Research
- Membrane Separation Technologies
- Copper-based nanomaterials and applications
- Climate Change and Geoengineering
Universidad Católica San Antonio de Murcia
2021-2025
Universidad Alfonso X el Sabio
2024-2025
Universidad Yachay Tech
2018-2021
Instituto Venezolano de Investigaciones Científicas
2008-2020
Laboratoire Charles Coulomb
2013-2018
Université de Montpellier
2008-2017
Centre National de la Recherche Scientifique
2008-2017
University of the Andes
2014
Paul Pascal Research Center
2009-2013
Université de Bordeaux
2011-2013
Lyotropic nematic aqueous suspensions of single-wall carbon nanotubes can be uniformly aligned in thin cells by shearing. Homogeneous anisotropic films prepared drying the nematic. Optical transmission between parallel or crossed polarizers is measured and described order to estimate dichroic ratio. The parameter using polarized Raman spectroscopy found quite weak due entanglement and/or an intrinsic viscoelastic behavior nanotube suspensions.
Liquid crystal ordering is an opportunity to develop novel materials and applications with carbon nanotubes spontaneously aligned on macroscopic scales. Nevertheless, achievement of large orientational order parameter extended monodomains remains challenging. In this work, we show that shortening allows the formation liquid crystals can easily be oriented under form monodomains. The single-wall nanotube measured by polarized Raman spectroscopy at isotropic−nematic transition exceeds far...
Liquid crystal ordering is an opportunity to develop novel materials and applications with spontaneously aligned nanotubes or graphene particles. Nevertheless, achieving high orientational order parameter large monodomains remains a challenge. In addition, our restricted knowledge of the structure currently available limitation for fundamental studies future applications. This paper presents recent methodologies that have been developed achieve nematic liquid crystals. These allow...
VAT photopolymerization technology was applied to fabricate three-dimensional (3D) porous β-Ca 2 SiO 4 ceramic scaffolds functionalized with graphene oxide (GO) sheets decorated silver nanoparticles (AgNPs).
Graphene oxide (GO) flakes dissolved in water can spontaneously form liquid crystals. Liquid crystallinity presents an opportunity to process graphene materials into macroscopic assemblies with long-range ordering, but most electronic functionalities are lost oxidation treatments. Reduction of GO allows recovering and makes reduced (RGO) greater interest. Unfortunately, chemical reduction generally results the aggregation flakes, no observed. We report present work crystals made RGO. The...
A post-synthesis alignment of individual single-walled carbon nanotubes (SWCNTs) is desirable for translating their unique anisotropic properties to a macroscopic scale. Here, we demonstrate excellent dispersion, orientation and concomitant-polarised photoluminescence SWCNTs in nematic chromonic liquid crystal. The methods obtain stable suspension are described, order parameters the crystal matrix measured independently.
Hydrogels are promising candidates for wound healing bandages because they can mimic the native skin microenvironment. Additionally, there is increasing growth in use of naturally derived materials and plant-based biomaterials to produce healthcare products with purposes their biocompatibility biodegradation properties. In this study, cellulose extracted from biodiverse sources Ecuador was used as raw material fabrication hydrogels enhanced antifouling Fourier-transform infrared (FTIR)...
Early exposure to research methodology through review articles represents a promising approach fostering interest among undergraduate students during their initial academic years. In the present work, implementation and impact of incorporating article analysis in first second-year curricula is examined as strategy promote engagement. The involved systematic integration study within regular coursework, focusing on developing critical skills comprehension. Students participated guided...
Modern research has evolved several approaches toward skin regeneration and one of the novel concerns is use polymer-based systems due to their excellent beneficial properties skin. Several polymers, such as cellulose, hyaluronan, alginate, chitosan, collagen, fibrin fibroin, have been tested proven benefits for regeneration, most them are derived from either polysaccharide- or protein-based materials. In order understand mode action, researchers investigated cell–matrix interaction possible...
A new procedure for the bioactivation of alumina-based porous ceramic constructs was introduced. The were built with aim mimicking structural and mechanical properties human cortical bone. Bioactivation achieved by adding wollastonite acidic surface treatment (piranha solution). Structural studies (SEM, CAT) confirmed that adequate pore size interconnectivity obtained. Uniaxial compression tests showed values Young's moduli compressive strength reduced, from 5 to 1 GPa, 45 15 MPa,...
The development of hydrogels has a significant impact in fields such as tissue engineering and biomedical devices. present study tests different cellulose particles extracted from plants to produce identify if these have antimicrobial properties. Nine Ecuadoran biodiversity were obtained using an established chemical extraction protocol, characterized known techniques, evaluated for bacterial growth in-vitro . In addition, two nine selected perform rates adhesion assays. with F1 F53 similar...
An assembly of packed and oriented rodlike particles exhibit anisotropic physical properties. We investigate in the present work conductivity films made intrinsically conducting rods. These are obtained from more or less ordered carbon nanotube liquid crystals. Their orientational order parameter is measured by polarized Raman spectroscopy. A relationship between anisotropy surface determined. The experimental results accounted for a model that takes into account number intertube contacts...
Polyvinyl alcohol (PVA) hydrogels are well-known biomimetic 3D systems for mammalian cell cultures to mimic native tissues. Recently, several biomolecules were intended use in PVA improve their biological properties. However, retinol, an important biomolecule, has not been combined with a hydrogel culturing bone marrow mesenchymal stem (BMMS) cells. Thus, the first time, effect of retinol on physicochemical, antimicrobial, and proliferative properties was investigated. The ability protein...