Física Aplicada: Enviaments recents
Ara mostrant els elements 261-280 de 556
Transverse and longitudinal components of the propagating and evanescent waves associated to radially-polarized nonparaxial fields
A comparison is established between the contributions of transverse and longitudinal components of both the propagating and the evanescent waves associated to freely propagating radially polarized nonparaxial beams. Attention ...
Generalization of the Jared-Ennis method to complex transmitance objects for the generation of Synthetic Discriminant Functions
We present a simple method of constructing synthetic discriminant function filters optimized to take into account the modulation of liquid-crystal devices. This relaxation algorithm, a generalization of the Jared and Ennis ...
Growth and functionalization of carbon nanotubes on quartz filter for environmental applications
Background: Air pollution has become an important issue worldwide due to its adverse health effects. Among the different air contaminants, volatile organic compounds (VOCs) are liquids or solids with a high vapor pressure ...
Analysis by Finite Element Calculations of Light Scattering in Laser-textured AZO Films for PV thin-film Solar Cells
In the thin-film photovoltaic industry, to achieve a high light scattering in one or more of the cell interfaces is one of the strategies that allow an enhancement of light absorption inside the cell and, therefore, a ...
DRIHM (2US): An e-Science environment for hydro-meteorological research on high impact weather events
From 1970 to 2012, about 9,000 high-impact weather events were reported globally, causing the loss of 1.94 million lives and damage of $2.4 trillion (U.S. dollars). The scientific community is called to action to improve ...
Surface passivation of crystalline silicon by Cat-CVD amorphous and nanocrystalline thin silicon films
In this work, we study the electronic surface passivation of crystalline silicon with intrinsic thin silicon films deposited by Catalytic CVD. The contactless method used to determine the effective surface recombination ...
Tunneling magnetoresistance in Co-ZrO2 granular thin films
Granular films composed of well defined nanometric Co particles embedded in an insulating ZrO2 matrix were prepared by pulsed laser depositon in a wide range of Co volume concentrations 0.15 x 0.43. High-resolution ...
Magnetic studies of Fe-Y compositionally modulated thin films
Compositionally modulated thin films of Y/Fe have been studied by using SQUID magnetometry. Samples were grown by electron‐beam evaporation onto Kapton substrates. In the low applied field regime, the samples show irreversible ...
3D Electrophoresis-assisted lithography (3DEAL): 3D molecular printing to create functional patterns and anisotropic hydrogels
The ability to easily generate anisotropic hydrogel environments made from functional molecules with microscale resolution is an exciting possibility for the biomaterials community. This study reports a novel 3D ...
Structure vs. excitonic transitions in self-assembled porphyrin nanotubes and their effect on light absorption and scattering
The optical properties of diprotonated meso-tetrakis(4-sulphonatophenyl)porphyrin (TPPS4) J-aggregates of elongated thin particles (nanotubes in solution and ribbons when deposited on solid interfaces) are studied by ...
On the mechano-chiral effect of vortical flows on the dichroic spectra of 5-phenyl-10,15,20-tris(4-sulfonatophenyl)porphyrin J-aggregates
Phase-modulated ellipsometry of the J-aggregates of the title porphyrin shows that the material gives a true CD signal. This confirms that there is a real chiral transfer by mechanical forces, mediated by shear gradient ...
Computer-Assisted assessment in open-ended activities through the analysis of traces: A Proof of concept in statistics with R Commander
Open-ended tasks are common in Science, Technology, Engineering and Mathematics (STEM) education. However, as far as we know, no tools have been developed to assist in the assessment of the solution process of open-ended ...
Capes primes electrocròmiques de WO3 i conductores iòniques de Ta2O5 obtingudes per polvorització catòdica
Per mitjà de la llum percebem una característica dels objectes molt important: el color. Al llarg de la història s'han investigat mètodes per modificar el color amb què són vistos els materials, ja sigui per motius ...
Relation between 2D/3D chirality and the appearence of chiroptical effects in real nanostructures.
The optical activity of fabricated metallic nanostructures is investigated by complete polarimetry. While lattices decorated with nanoscale gammadia etched in thin metallic films have been described as two dimensional, ...
Pattern detection using a modified composite filter with nonlinear joint transform correlator
A simple method for optical implementation of a composite filter in a joint transform correlator is presented. A composite filter in object space is a real function, but by adding an appropriate constant value, only positive ...
3D Shape Control of Printed Micro-Electrodes with Substrate Reshaping
Additive manufacturing (AM) techniques based on liquid precursors, including inkjet printing or laser-induced forward transfer (LIFT), are emerging as the tool-of-choice for the on-demand fabrication of printed electronic ...
Reduction of the effect of aberrations in a joint transform correlator
We report the study of the influence of optical aberrations in a joint-transform correlator: The wave aberration of the optical system is computed from data obtained by ray tracing. Three situations are explored: We consider ...
SimpliPyTEM: An open-source Python library and app to simplify transmission electron microscopy and TEM image analysis
Introducing SimpliPyTEM, a Python library and accompanying GUI that simplifies the post-acquisition evaluation of transmission electron microscopy (TEM) images, helping streamline the workflow. After an imaging session, a ...
Epitaxial growth of Y-doped SrZrO3 films on MgO by pulsed laser deposition
Epitaxial thin films of Y¿doped SrZrO3 have been grown on MgO(001) by pulsed laser deposition. The deposition process has been performed at temperatures of 1000¿1200¿°C and at an oxygen pressure of 1.5×10¿1 mbar. The samples ...
A methodology to conduct wind damage field surveys for high-impact weather events of convective origin
Post-event damage assessments are of paramount importance to document the effects of high-impact weather-related events such as floods or strong wind events. Moreover, evaluating the damage and characterizing its extent ...
