A5086306336- Anodic Oxide Films and Nanostructures
- Ion-surface interactions and analysis
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Magnetic properties of thin films
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Semiconductor materials and devices
- Planetary Science and Exploration
- Nanoporous metals and alloys
- Astro and Planetary Science
- Geomagnetism and Paleomagnetism Studies
- Electronic and Structural Properties of Oxides
- Integrated Circuits and Semiconductor Failure Analysis
- Catalytic Processes in Materials Science
- Advanced biosensing and bioanalysis techniques
- Magnetic Properties and Synthesis of Ferrites
- Laser-Ablation Synthesis of Nanoparticles
- Magnetic Field Sensors Techniques
- Nanopore and Nanochannel Transport Studies
- Magnetic Properties and Applications
- Natural Fiber Reinforced Composites
- Characterization and Applications of Magnetic Nanoparticles
- Quantum Dots Synthesis And Properties
- Ionosphere and magnetosphere dynamics
Instituto Nacional de Técnica Aeroespacial
2011-2025
Centro Tecnológico Lurederra
2024-2025
Institute of Micro and Nanotechnology
2018
Institute for Microelectronics and Microsystems
2014-2017
University of Catania
2014-2015
Agencia Estatal de Meteorología
2015
Rafael Advanced Defense Systems (Israel)
2014
Instituto de Ciencia de Materiales de Madrid
2004-2011
Consejo Superior de Investigaciones Científicas
2004-2010
International Council on Mining and Metals
2010
High-quality densely packed hexagonal arrays of Ni nanowires have been prepared by filling self-ordered nanopores in alumina membranes. Nanowires with different diameter d (18–83 nm) and lattice parameter D (65 105 studied atomic force, high resolution scanning electron microscopies, Rutherford backscattering, vibrating sample magnetometer techniques. Axial loops coercivity remanence decrease increasing ratio to parameter, r, until start interconnect locally. Additionally, hysteresis...
TiO<sub>2</sub> wrapping of Au nanoparticles has a remarkable efficiency in degrading organic compounds without toxicity.
Electrodeposited nanowires are an excellent scenario to study and control magnetic domain wall motion in nanostructures. In particular, the introduction of local changes composition during growth procedure has been proven be very efficient for controlling magnetization dynamics. this work, we show possibility introducing compositional gradients FeNi electrodeposited by gradually changing Fe/Ni ratio along their axis. These produce asymmetrical landscape which is reflected processes under...
Magnetization reversal in three-dimensional nanowire networks is driven by highly localized magnetic states, arising from the interplay of exchange, dipolar interactions and magnetoelastic anisotropy, thereby challenging prevailing understanding.
This work shows the application of metal ion-implantation to realize an efficient second-generation TiO2 photocatalyst. High fluence Fe+ ions were implanted into thin films and subsequently annealed up 550 °C. The process modified pure film, locally lowering its band-gap energy from 3.2 eV 1.6–1.9 eV, making material sensitive visible light. measured optical was associated with presence effective levels in band structure titanium dioxide, due implantation-induced defects. An accurate...
Third-generation TiO2 photocatalysts were prepared by implantation of C+ ions into 110 nm thick films. An accurate structural investigation was performed Rutherford backscattering spectrometry, secondary ion mass X-ray diffraction, Raman-luminescence spectroscopy, and UV/VIS optical characterization. The C doping locally modified the pure films, lowering band-gap energy from 3.3 eV to a value 1.8 eV, making material sensitive visible light. synthesized materials are photocatalytically active...
In this work a successful method for producing high-aspect-ratio nanopatterned single-crystal TiO2 is presented. The used based on nanolithography involving swift heavy ion bombardment through porous anodic alumina mask. Nanopatterning of large areas allows fabrication new devices, example, photonic crystals and electrodes energy storage conversion. Crystalline also presents optimal characteristics optical catalysis applications. Samples were irradiated by MeV Br7+ ions with fluencies...
This work presents an experimental study on the specific quantitative contributions of antireflective and effective surface areas photocatalytic antibacterial properties rutile TiO2 nanospikes. They are studied when continuously distributed over whole integrated into well-defined microstructures. The nanospikes were produced following MeV ion beam irradiation bulk single crystals subsequent chemical etching. generated embedded isolated crystalline nanoparticles inside etchable amorphous...
Abstract Understanding the interactions among magnetic nanostructures is one of key factors to predict and control advanced functionalities 3D integrated nanostructures. In this work, focus on different interconnected Ni nanowires forming an intricate, but controlled, ordered system: Nanowire Networks (3DNNs). These self‐ordered systems present striking anisotropic responses, depending interconnections’ position between nanowires. To understand their collective behavior, magnetization...
Ion track lithography has been applied for transferring the self-ordered nanopattern of porous anodic alumina to single-crystalline rutile TiO2 substrates. As a result, nanometre resolved arrays have fabricated with an aspect ratio ranging from 5 16, over areas several square millimetres. Differences in expected resulting nanopores single crystals are analysed and discussed. Some these differences may be ascribed varying densities mask material.
The magnetic properties of FePt thin films have been modified by exposing the samples to irradiation 4 MeV Cl${}^{2+}$ ions. Patterned films, without topographical profile, were fabricated irradiating through a shadowing micrometric mask. structural changes, ascribed ion-beam-induced amorphization promote modification anisotropy. In particular, out-of-plane component magnetization decreases simultaneously with an enhancement in-plane anisotropy increasing ion fluence. Moreover, nonirradiated...
Abstract The synthesis of flexible photonic materials, by sustainable and scalable methods, is proved to be a difficult task for the materials science industrial communities. Alongside, modern society has also grown strong dependence on polymeric demanding superpolymers that combine functionality cost with superior after‐use properties. path accomplishing this aim made possible mimicking nature through merging self‐ordered nanostructures commodity thermoplastic, resorting basic fabrication...
A limited number of Anisotropic Magnetoresistive (AMR) commercial-off-the-shelf (COTS) magnetic sensors the HMC series by Honeywell, with and without integrated front-end electronics, were irradiated gamma rays up to a total irradiation dose 200 krad (Si), following ESCC Basic Specification No. 22900. Due cleanliness required for these tests special set-up was designed successfully employed. Several parameters monitored during testing results are reported in this paper. The authors conclude...