Enginyeria Electrònica i Biomèdica: Recent submissions
Now showing items 401-420 of 781
Hydrogen-induced changes in the breakdown voltage of InP HEMTs
In this work, electrical measurements show that the breakdown voltage,BVDG, of InP HEMTs increases following exposure to H2. This BVDG shift is nonrecoverable. The increase in BVDG is found to be due to a decrease in the ...
Làsers d"upconversion: llum làser visible a partir de llum infraroja.
Els làsers aporten solucions a una gran varietat de problemes de la vida diària ...
H2 generation from aqueous ethanol over ZnO nanowires, the photo-transformation of surface species
ZnO nanowires (NWs) with wurzite structure and a very high [0001] preferred orientation were grown on a ZnO thin film, from a gas-solid process, in the absence of catalyst. ZnO NWs were characterized by FESEM, XRD, HRTEM, ...
Luminescence properties of Ce3+ and Tb3+ co-doped SiOxNy thin films: prospects for color tunability in silicon-based hosts
In this work, the role of the nitrogen content, the annealing temperature, and the sample morphology on the luminescence properties of Ce3+ and Tb3+ co-doped SiOxNy thin films has been investigated. An increasing nitrogen ...
Influence of In and Ga additives onto SnO2 inkjet-printed semiconductor
Tin oxide is a multifunctional semiconductor that offers excellent capabilities in a variety of applications such as solar cells, catalysis and chemical sensors. In this work, tin-based semiconductors have been obtained ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
Green electroluminescence of Al/Tb/Al/SiO2 devices fabricated by electron beam evaporation
In this work, the fabrication and the structural, optical and electrical properties of Al-Tb/SiO2 nanomultilayers have been studied. The nanomultilayers were deposited by means of electron beam evaporation on top of p-type ...
Structure of 60° dislocations at the GaAs/Si interface
High‐resolution electron microscopy technique has been applied to a detailed study of the 60° dislocations at the atomic layer molecular‐beam‐epitaxial GaAs/Si interface. Their deformation fields strongly interact with ...
Bipolar pulsed excitation of erbium-doped nanosilicon light emitting diodes
High quantum efficiency erbium doped silicon nanocluster (Si-NC:Er) light emitting diodes (LEDs) were grown by low-pressure chemical vapor deposition (LPCVD) in a complementary metal-oxide-semiconductor (CMOS) line. Erbium ...
CSRR chemical sensing in uncontrolled environments by PLS regression
Complementary Split Ring Resonators (CSRRs) have been widely researched as planar sensors, but their use in routine chemical analysis is limited due to dependence on high-end equipment, controlled conditions, and susceptibility ...
Lunar occultations events from the Earth-Moon equilateral Lagrangian point: Simulations and scientific potential
Recently, a novel idea has been proposed to use a spacecraft orbiting closely around the L4 or L5 Lagrangian points of the Earth–Moon system as a vantage location for astronomical observations under unique and advantageous ...
Understanding odor information segregation in the olfactory bulb by means of mitral and tufted cells
Odor identification is one of the main tasks of the olfactory system. It is performed almost independently from the concentration of the odor providing a robust recognition. This capacity to ignore concentration information ...
Multilayered broadband antenna for compact embedded implantable medical devices: design and characterization
Design and characterization of a multilayered compact implantable broadband antenna for wireless biotelemetry applications is presented in this paper. The main features of this novel design are miniaturized size, structure ...
A microphysiological system combining electrospun fibers and electrical stimulation for the maturation of highly anisotropic cardiac tissue
The creation of cardiac tissue models for preclinical testing is still a non-solved problem in drug discovery, due to the limitations related to the in vitro replication of cardiac tissue complexity. Among these limitations, ...
