Física Aplicada: Recent submissions
Now showing items 21-40 of 554
Light induced defects in thermal annealed hydrogenated amorphous silicon
The metastable defects of a-Si:H samples annealed at temperatures in the 300-550°C range have been studied by photothermal deflection spectroscopy (PDS). The light-soaked samples show an increase in optical absorption in ...
In situ spectroellipsometric study of the nucleation and growth of amorphous silicon
A detailed in situ spectroellipsometric analysis of the nucleation and growth of hydrogenated amorphous silicon (a:Si:H) is presented. Photoelectronic quality a‐Si:H films are deposited by plasma‐enhanced chemical vapor ...
Thin silicon films ranging from amorphous to nanocrystalline obtained by Hot-Wire CVD
In this paper, we have presented results on silicon thin films deposited by hot-wire CVD at low substrate temperatures (200 °C). Films ranging from amorphous to nanocrystalline were obtained by varying the filament temperature ...
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 ...
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 ...
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 ...
Design strategies for optimizing holographic optical tweezers set-ups
We provide a detailed account of the construction of a system of holographic optical tweezers. While a lot of information is available on the design, alignment and calibration of other optical trapping configurations, those ...
On the conditions for winter lightning at the Eagle Nest Tower (2537 m asl) during the Cerdanya-2017 field experiment
In this paper, we analyze meteorological conditions, thundercloud structure, lightning activity and characteristics of the flashes that strike two towers separated by 1.3 km on Tosa d'Alp (2537 m asl) for two days (March ...
Experimental implementation of tightly focused beams with unpolarized transversal component at any plane
The aim of this paper is to provide a formal framework for designing highly focused fields with specific transversal features when the incoming beam is partially polarized. More specifically, we develop a field with a ...
Up-conversion effect of Er- and Yb-doped ZnO thin films
Visible up-conversion in ZnO:Er and ZnO:Er:Yb thin films deposited by RF magnetron sputtering under different O2-rich atmospheres has been studied. Conventional photoluminescence (325 nm laser source) and up-conversion ...
A simple method for displaying Fresnel holograms on liquid crystal panels
In this paper we present a method for reconstructing Fresnel holograms using two liquid crystal devices, one to display the amplitude information and the other to display the phase. The theoretical approach has been adapted ...
Multiple Characteristics of Precipitation Inferred from Wind Profiler Radar Doppler Spectra
A methodology to process radar wind profiler Doppler spectra is presented and implemented for an UHF Degreane PCL1300 system. First, double peak signal detection is conducted at each height level and, then, vertical ...
Kerr measurements on single-domain SrRuO3 thin films
We report on the magneto-optical measurements of an epitaxial SrRuO3 film grown on SrTiO3 (0 0 1), which previously was determined to be single domain orientated by x-ray diffraction and Raman spectroscopy techniques. Our ...
Anisotropic integral decomposition of depolarizing Mueller matrices
We propose a novel, computationally efficient integral decomposition of depolarizing Mueller matrices allowing for the obtainment of a nondepolarizing estimate, as well as for the determination of the elementary polarization ...
Reduced microwave losses of YBa2Cu3O7_thin films on electro-optic LiNbO3 crystals
We report on the growth of epitaxial YBa2Cu3O7 thin films on X-cut LiNbO3 single crystals. The use of double CeO2/YSZ buffer layers allows a single in-plane orientation of YBa2Cu3O7, and results in superior superconducting ...
