A5069742305- Silicon Nanostructures and Photoluminescence
- Nanowire Synthesis and Applications
- Semiconductor materials and devices
- Quantum Dots Synthesis And Properties
- ZnO doping and properties
- Anodic Oxide Films and Nanostructures
- 3D Printing in Biomedical Research
- Bone Tissue Engineering Materials
- Microfluidic and Bio-sensing Technologies
- Analytical Chemistry and Sensors
- Advanced biosensing and bioanalysis techniques
- Dielectric properties of ceramics
- Gold and Silver Nanoparticles Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Laser-Ablation Synthesis of Nanoparticles
- Viral Infectious Diseases and Gene Expression in Insects
- Modular Robots and Swarm Intelligence
- Pluripotent Stem Cells Research
- Ga2O3 and related materials
- Cellular Mechanics and Interactions
- Silicone and Siloxane Chemistry
Universidad Autónoma de Madrid
2009-2020
Universidad Europea
2020
Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine
2009-2010
Centro de Investigación Biomédica en Red
2009-2010
Porous silicon (PSi) is widely used in biological experiments, owing to its biocompatibility and well-established fabrication methods that allow tailoring surface. Nevertheless, there are some unresolved issues such as deciding whether the stabilization of PSi necessary for applications evaluating effects on surface biofunctionalization with proteins. In this work we demonstrate non-stabilized prone detachment stress induced upon biomolecular adsorption. Biofunctionalized loses interference...
Abstract The surface properties of porous silicon (PSi) evolve rapidly in phosphate‐buffered saline. X‐ray photoelectron spectra indicate the formation a Si–OH and C–O enriched surface, which becomes increasingly hydrophilic with aging time. Multiscale stripe micropatterns Si PSi have been fabricated by means high‐energy ion‐beam irradiation process. These aged physiological conditions used to analyze human mesenchymal stem cell (hMSC) adhesion. actin cytoskeleton hMSCs orients following...
This work describes a novel process for the fabrication of hybrid nanostructured particles showing intense tunable photoluminescence and simultaneous ferromagnetic behavior. The involves synthesis porous silicon (NPSi) by chemical anodization crystalline subsequent in pore growth Co nanoparticles electrochemically-assisted infiltration. Final are obtained sonication Co-infiltrated NPSi layers conjugation with poly(ethylene glycol) aiming at enhancing their hydrophilic character. These...
The typical large specific surface area and high reactivity of nanostructured porous silicon (nanoPS) make this material very suitable for the development sensors. Moreover, its biocompatibility biodegradability opens way to biosensors. As such, in work use nanoPS field electrical biosensing is explored. More specifically, nanoPS-based devices with Al/nanoPS/Al Au-NiCr/nanoPS/Au-NiCr structures were fabricated detection glucose Escherichia Coli bacteria at different concentrations....
Nanocomposites formed by porous silicon (PS) and zinc oxide (ZnO) have potential for applications in optoelectronic devices. However, understanding the distribution of both materials nanocomposite, especially fine structure synthesized ZnO crystals, is key future device fabrication. This study focuses on advanced characterization a range PS-ZnO nanocomposites using photon- ion-based techniques, such as X-ray absorption spectroscopy (XAS) elastic backscattering (EBS), respectively. PS...
Cu–porous silicon (Cu–PS) composite materials consisting of nanosized Cu clusters preferentially grown on the surface PS were fabricated by photoassisted deposition nanoparticles onto PS. Structural and chemical characterization particles in matrix has been carried out synchrotron X-ray absorption spectroscopy, from which different reaction stages have identified within reaction. In particular, it was found that reduction occurs three main phases: (a) nucleates homogeneously a few seconds...
Silicon-based porous nanoparticles showing at the same time intense visible luminescence and magnetic response were fabricated. The hybrid luminescent/magnetic (hLMNPs) fabricated by electrodeposition of cobalt iron into nanostructured silicon. These subsequently functionalized internalized cells. behavior hLMNPs is a relevant feature for development research tools as nontoxic cellular tracker progenitor cells consequently able to be used in many strategies therapy. Additionally, can with...
Abstract In the present work, characterization of cobalt-porous silicon (Co-PSi) hybrid systems is performed by a combination magnetic, spectroscopic, and structural techniques. The Co-PSi structures are composed columnar matrix PSi with Co nanoparticles embedded inside, as determined Transmission Electron Microscopy (TEM). oxidation state, crystalline structure, magnetic behavior X-Ray Absorption Spectroscopy (XAS) Alternating Gradient Field Magnetometry (AGFM). Additionally, concentration...
Sequential plasma processes combined with specific lithographic methods allow for the fabrication of advanced material structures. In present work, we used self-assembled colloidal monolayers as structures conformation ordered Si submicrometer pillars by reactive ion etching. We explored different discharge conditions to optimize pillar geometry. Selected were further decorated gold conventional sputtering, prior monolayer lift-off. The resulting consist a crown, that is, cylindrical coating...
ZnO composites with porous silicon (PSi) are increasingly used in advanced optical and electronic structures. ZnO/PSi nanocomposites have been prepared by permeating anodized PSi sols based on zinc acetate. Upon thermal annealing the form surface wurzite nanocrystals, as indicated XRD from temperatures of 400 °C. By increasing up to 800 °C, electron microscopies evidence that diffuses through columnar PSi, while void crystallites decorate surface. Angular dependent x-ray photoelectron...
Nanostructured porous silicon (nanoPS) can be described as a network of crystals with sizes in the range few nanometers. The typical large specific surface area and high reactivity nanoPS make this material very suitable for many different applications field sensing. Moreover, its biocompatibility biodegradability opens way to development biosensors. Within context, present work use electrical biosensing is explored. More specifically, nanoPS-based devices structure Al/nanoPS/silicon/Al...
Nanostructured porous silicon (nanoPS) particles with dual luminescent and magnetic properties have been fabricated biofunctionalized aiming at cellular applications in both progenitor cell research therapy. The luminescent/magnetic nanoparticles (DLMNPs) by the electrodeposition of cobalt iron into nanoPS. DLMNPs show luminescence as illustrated photoluminescence measurements direct fluorescence microscopy, simultaneously exhibit properties. resulting subsequently functionalized...