Enginyeria Electrònica i Biomèdica: Recent submissions
Now showing items 421-440 of 787
BPSK to ASK signal conversion using injection-locked oscillators-Part I: theory
This paper presents a new method and circuit for the conversion of binary phase-shift keying (BPSK) signals into amplitude shift keying signals. The basic principles of the conversion method are the superharmonic injection ...
Long-range order of Ni2+ and Mn4+ and ferromagnetism in multiferroic (Bi0.9La0.1)2NiMnO6 thin films
Epitaxial thin films of biferroic Bi1−xLax 2NiMnO6 have been grown on SrTiO3 001 substrates. High resolution electron microscopy, energy-loss spectroscopy and synchrotron radiation have been used to demonstrate that, under ...
Alloy inhomogeneities in InAlAs strained layers grown by MBE
Transmission electron microscopy studies have been performed to characterize InxAl1−xAs layers grown by molecular beam epitaxy on (100) InP substrates. The first observations of compositional nonuniformities in strained ...
Teragnosis in vivo: Innovación nanomédica fomentada por la convergencia de tecnologías emergentes
El creciente desarrollo y la mejora en cuanto a innovación de dispositivos basados en la convergencia de tecnologías emergentes ha dado lugar a un uso cada vez mayor de los nanosensores en la comunidad biomédica. Sin ...
Sensor-integrated microfluidic approaches for liquid biopsies applications in early detection of cancer
Cancer represents one of the conditions with the most causes of death worldwide. Common methods for its diagnosis are based on tissue biopsies the extraction of tissue from the primary tumor, which is used for its histological ...
Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation
The Cherenkov Telescope Array (CTA), the new-generation ground-based observatory for gamma-ray astronomy, provides unique capabilities to address significant open questions in astrophysics, cosmology, and fundamental ...
Compatibility Study of 3D Printing and PCB Technologies for RF Components and Circuits
This paper explores the potential of combining additive manufacturing with printed circuit board technology to fabricate radio frequency components and circuits. This combination aims to leverage the design freedom of ...
Gated Geiger mode avalanche photodiode pixels with integrated readout electronics for low noise photon detection
Avalanche photodiodes operated in the Geiger mode offer a high intrinsic gain as well as an excellent timing accuracy. These qualities make the sensor specially suitable for those applications where detectors with high ...
Design, Additive Manufacturing, and Characterization of a Symmetric 3-Way Wilkinson Power Divider/Combiner
This work presents the design, manufacturing and electromagnetic characterization of compact 3-way Wilkinson power divider/combiner prototypes intended to work in the sub-GHz frequency band. The primary objective is to ...
Characterization of the electrical properties of individual tin-oxide nanowires contacted to platinum nanoelectrodes
A simple and useful experimental alternative to field-effect transistors for measuring electrical properties free electron concentration nd, electrical mobility , and conductivity in individual nanowires has been developed. ...
3D Visualization of the Iron Oxidation State in FeO/Fe3O4 Core-Shell Nanocubes from Electron Energy Loss Tomography.
Left panel shows the explained variance ratio of the principal component analysis (PCA) decomposition. The six first components, which are enough to explain the whole data set, are plotted in the right panel. Components ...
Enhanced low field magnetoresistive response in (La2/3Sr1/3MnO3)x/(CeO2)1-x composite thick films prepared by screen printing
The magnetoresistance and magnetization of (La2/3Sr1/3MnO3)x(LSMO)/(CeO2)1−x (0.64⩽x⩽1) composite thick films have been studied as a function of the manganite concentration. It is found that for high LSMO content, when the ...
Correlation between charge transport and electroluminescence properties of Si-rich oxide/nitride/oxide-based light emitting capacitors.
The electrical and electroluminescence (EL) properties at room and high temperatures of oxide/ nitride/oxide (ONO)-based light emitting capacitors are studied. The ONO multidielectric layer is enriched with silicon by means ...
Catheter design primer for neurointerventionalists
Neurovascular catheter technology has rapidly evolved over the past decade. While performance characteristics are well known to the practitioner, the design features of these new-generation catheters and their implications ...
Boron-incorporating silicon nanocrystals embedded in SiO2: absende of free carriers vs. B-induced defects
Boron (B) doping of silicon nanocrystals requires the incorporation of a B-atom on a lattice site of the quantum dot and its ionization at room temperature. In case of successful B-doping the majority carriers (holes) ...
Crystal growth and spectroscopic characterization of Tm3+-doped KYb(WO4)2 single crystals.
In this paper we present the crystal growth and optical characterization of thulium-doped KYb(WO4)2 ~hereafter KYbW!. We grew thulium-doped KYbW monoclinic single crystals with optimal crystalline quality by the ...
3D-Printed UHF-RFID Tag for Embedded Applications
This paper presents the design, manufacture and characterization of a novel 3D passive UHF-RFID tag for embedded applications. The prototype is fabricated using additive manufacturing techniques: 3D printing and copper ...
Coverage effects on the magnetism of Fe/MgO(001) ultrathin films
Different aspects of the structure-magnetism and morphology-magnetism correlation in the ultrathin limit are studied in epitaxial Fe films grown on MgO(001). In the initial stages of growth the presence of substrate steps, ...
Structure and magnetic properties of Co-doped ZnO nanoparticles
In this work we carefully analyze the role of the microstructure on the magnetic properties of Co-doped ZnO nanoparticles prepared by the vaporization-condensation method in a solar reactor. We show that a close correlation ...
Multiwavelength excitation Raman scattering study of polycrystalline kesterite Cu2ZnSnS4 thin films
This work presents a complete analysis of all Raman active modes of Cu 2ZnSnS4 measuring with six different excitation wavelengths from near infrared to ultraviolet. Simultaneous fitting of spectra allowed identification ...
