Enginyeria Electrònica i Biomèdica: Recent submissions
Now showing items 221-240 of 781
Electron capture and emission by the Ti acceptor level in GaP
Previously reported results on deep level optical spectroscopy, optical absorption, deep level transient spectroscopy, photoluminescence excitation, and time resolved photoluminescence are reviewed and discussed in order ...
Continuous Live-Cell Culture Imaging and Single-Cell Tracking by Computational Lensfree LED Microscopy
Continuous cell culture monitoring as a way of investigating growth, proliferation, and kinetics of biological experiments is in high demand. However, commercially available solutions are typically expensive and large ...
Effects of Nb doping on the TiO2 anatase-to-rutile phase transition
We study the influence of Nb doping on the TiO2 anatase-to-rutile phase transition, using combined transmission electron microscopy, Raman spectroscopy, x-ray diffraction and selected area electron diffraction analysis. ...
Sphericity and Roundness Computation for Particles using the Extreme Vertices Model
Shape is a property studied for many kinds of particles. Among shape parameters, sphericity and roundness indices had been largely studied to understand several processes. Some of these indices are based on length measurements ...
Transport properties across the La2/3Ca1/3MnO3/SrTiO3 heterointerface
The transport properties across La2/3Ca1/3MnO3/SrTiO3 (LCMO/STO) heterostructures with different thicknesses of the STO insulating barrier have been studied by using atomic force microscopy measurements in the current ...
Nanostructure ITO and get more of it. Better performance at lower cost
In this paper, we investigated how different growth conditions (i.e., temperature, growth time, and composition) allows for trading off cost (i.e., In content) and performance of nanostructured indium tin oxide (ITO) for ...
Strain, alloy composition, and lattice relaxation measured by optical-absorption spectroscopy
The validity of optical absorption (OA) as a technique for the measurement of strain e11, alloy composition x, and relaxation in InxGa1−xAs epilayers on InP has been examined by comparison with similar measurements by ...
Influence of porosity on the critical currents of trifluoroacetate-MOD YBa2Cu3O7 films
The influence of porosity on the superconducting properties have been investigated on YBa/sub 2/Cu/sub 3/O/sub 7/ thin films deposited on LaAlO/sub 3/ [100] substrates by the so-called Trifluoroacetate (TFA) route. Micro-Raman ...
Gamification for Teaching Integrated Circuit Processing in an Introductory VLSI Design Course
Gamification is being incorporated into university classrooms due to its educational benefits for students learning, including encouraging student behavior and engagement, and consequently improving learning outcomes. ...
Competitive USB-Powered Hand-Held Potentiostat for POC Applications: An HRP Detection Case
Considerable efforts are made to develop Point-of-Care (POC) diagnostic tests. POC devices have the potential to match or surpass conventional systems regarding time, accuracy, and cost, and they are significantly easier ...
Ab initio study of NOx compounds adsorption on SnO2 surface
An ab initio study of the adsorption processes on NOx compounds on (1 1 0) SnO2 surface is presented with the aim of providing theoretical hints for the development of improved NOx gas sensors. From first principles ...
Strain-induced stabilization of new magnetic spinel structures in epitaxial oxide heterostructures.
We report here on the growth of NiFe2O4 epitaxial thin films of different thickness (3 nm ¿ t ¿ 32 nm) on single crystalline substrates having spinel (MgAl2O4) or perovskite (SrTiO3) structure. Ultrathin films, grown on ...
Shot noise in linear macroscopic resistors
We report on direct experimental evidence of shot noise in a linear macroscopic resistor. The origin of the shot noise comes from the fluctuation of the total number of charge carriers inside the resistor associated with ...
The effects of electron-hole separation on the photoconductivity of individual metal oxide nanowires
The responses of individual ZnO nanowires to UV light demonstrate that the persistent photoconductivity (PPC) state is directly related to the electron¿hole separation near the surface. Our results demonstrate that the ...
Fluorescence Multi-Detection Device Using a Lensless Matrix Addressable microLED Array
A Point-of-Care system for molecular diagnosis (PoC-MD) is described, combining GaN and CMOS chips. The device is a micro-system for fluorescence measurements, capable of analyzing both intensity and lifetime. It consists ...
Estudio de la reaccion de sulfurizacion de precursores Cu/In para la formacion de capas delgadas policristalinas de CuInS2 para celulas solares
En este trabajo se presenta un estudio detallado de los procesos implicados en la sulfurización de capas metálicas de Cu-In para la fabricación de células solares de CuInS2. Con este objeto, se ha desarrollado un experimento ...
Microstrip-fed 3D-printed H-sectorial horn phased array
3D-printed phased array consisting of four H-Sectorial horn antennas of 200 g weightwith an ultra-wideband rectangular-waveguide-to-microstrip-line transition operating over the wholeLMDS and K bands (24.25–29.5 GHz) is ...
Structural and gas-sensing properties of WO3 nanocrystalline powders obtained by a sol-gel method from tungstic acid
WO3 nanocrystalline powders were obtained from tungstic acid following a sol-gel process. Evolution of structural properties with annealing temperature was studied by X-ray diffraction and Raman spectroscopy. These structural ...
Readout electronics for LGAD sensors
In this paper, an ASIC fabricated in 180 nm CMOS technology from AMS with the very front-end electronics used to readout LGAD sensors is presented as well as its experimental results. The front-end has the typical architecture ...
Time-resolved measurements on 2T2 -> 2E photoluminescence of Ti3+ in GaP
The time dependence of the 2 T 2 → 2 E photoluminescence transition of Ti 3 + Ga in GaP has been measured on semi-insulating, p-type conducting, and n-type conducting samples. A decay time τ 0 =2.0 μs was ...
