Institut de Nanociència i Nanotecnologia (IN2UB): Recent submissions
Now showing items 281-300 of 375
Transparent and conductive silver nanowires networks printed by laser-induced forward transfer
Networks of silver nanowires (Ag-NWs) can be electrically conductive and optically transparent at the same time. Thus, Ag-NWs are promising candidates for substituting transparent and conductive oxides like indium-tin-oxide. ...
ZIF-8 Films and Surface Plasmon Resonance for Chemical Vapor Detection
In this paper, we present a sensor that employs Zeolitic Imidazolate Frameworks (ZIF-8) on a Surface Plasmon Resonance sensor based on diffraction gratings to detect ethanol vapors via refractive index change in the porous ...
Magnetic droplet solitons
Magnetic droplet solitons are dynamical magnetic textures that form due to an attractive interaction between spin waves in thin films with perpendicular magnetic anisotropy. Spin currents and the spin torques associated ...
Collective hydrodynamic transport of magnetic microrollers
We investigate the collective transport properties of microscopic magnetic rollers that propel close to a surface due to a circularly polarized, rotating magnetic field. The applied field exerts a torque to the particles, ...
The impact of Mn nonstoichiometry on the oxygen mass transport properties of La0.8Sr0.2MnyO3±δ thin films
Oxygen mass transport in perovskite oxides is relevant for a variety of energy and information technologies. In oxide thin films, cation nonstoichiometry is often found but its impact on the oxygen transport properties is ...
Electroforming of Si NCs/p-Si photovoltaic devices: Enhancement of the conversion efficiency through resistive switching
In this work, the relation between the photovoltaic and resistive switching (RS) properties of metal-oxide-semiconductor devices containing Si nanocrystal (Si NC) superlattices is investigated. A first approximation concludes ...
Synergistic enhancement of Raney-Ni catalyst for methane dry reforming viaelectrochemically e ngineered CoNi co-catalyst
Dry reforming of methane (DRM) offers a promising route to convert biogas into syngas while capturing CO₂.However, the harsh reaction conditions (≥700 ◦C) lead to rapid deactivation of conventional Ni-based catalystsdue ...
Reading Dye-Based Colorimetric Inks: Achieving Color Consistency Using Color QR Codes
Color consistency when reading colorimetric sensors is a key factor for this technology. Here, we demonstrate how the usage of machine-readable patterns, like QR codes, can be used to solve the problem. We present our ...
Enhancement of the Elastocaloric Performance of Natural Rubber by Forced Air Convection
We study the enhancement of the elastocaloric effect in natural rubber by using forced air convection to favour heat extraction during the elongation stage of a stretching–unstretching cycle. Elastocaloric performance is ...
Characterizing the Hard and Soft Nanoparticle-Protein Corona with Multilayer Adsorption
Nanoparticles (NPs) in contact with biological fluid adsorb biomolecules into a corona. This corona comprises proteins that strongly bind to the NP (hard corona) and loosely bound proteins (soft corona) that dynamically ...
Superfluid helium droplet-mediated surface-deposition of neutral and charged silver atomic species.
Experimental and theoretical work has delivered evidence of the helium nanodroplet-mediated synthesis and soft-landing of metal nanoparticles, nanowires, clusters, and single atoms on solid sup- ports. Recent experimental ...
Excluded Volume Causes Integer and Fractional Plateaus in Colloidal Ratchet Currents
We study the collective transport of paramagnetic colloids driven above a magnetic bubble lattice by an external rotating magnetic eld. We measure a direct ratchet current which rises in integer and fractional steps with ...
Flavonoid ‐ enriched plant ‐ extract ‐ loaded emulsion : a novel phytocosmetic sunscreen formulation with antioxidant properties. antioxidants
The aim of this study was to develop a phytocosmetic sunscreen emulsion with antioxidant effect, containing a blend of flavonoid-enriched plant extracts. In vitro sun protection factor, antioxidant activity, skin irritation, ...
Sugar-Lowering Drugs for Type 2 Diabetes Mellitus and Metabolic Syndrome Strategies for In Vivo Administration: Part-II
Diabetes is a complex disease characterized by hyperglycemia, together with polyuria, polydipsia, and polyphagia. While Type 1 diabetes mellitus (T1DM) results from genetic, environmental, or immune dysfunction factors ...
Conditions determining the morphology and nanoscale magnetism of Co nanoparticles: Experimental and numerical studies
Co-based nanostructures ranging from core/shell to hollow nanoparticles were prepared by varying the reaction time and the chemical environment during the thermal decomposition of Co2(CO)8. Both structural characterization ...
Parallel illumination for depletion microscopy throughacousto-optic spatial light modulation
State-of-the-art super-resolution microscopy techniques, including Stimulated Emission Depletion (STED), Reversible Saturable Optical Fluorescence Transitions (RESOLFT), and Switching Laser Mode (SLAM) microscopies, implement ...
Extending calibration-free force measurements to optically-trapped rod-shaped samples
Optical trapping has become an optimal choice for biological research at the microscale due to its non-invasive performance and accessibility for quantitative studies, especially on the forces involved in biological ...
Caloric Effects Induced by Uniform and Non-uniform Stress in Shape-Memory Materials
A Ginzburg–Landau model is developed that is adequate to describe a square-to-rectangle martensitic transition with associated shape-memory and superelastic properties. Using this model we study caloric effects in the ...
Breakup of quantum liquid filaments
We investigate how the Rayleigh-Plateau instability of a filament made of a 41 K - 87 Rb self-bound mixture may lead to an array of identical quantum droplets, with typical breaking times which are shorter than the lifetime ...
Silver nanoparticles-composing alginate/gelatine hydrogel improves wound healing in vivo
Polymer hydrogels have been suggested as dressing materials for the treatment of cutaneous wounds and tissue revitalization. In this work, we report the development of a hydrogel composed of natural polymers (sodium alginate ...
