Enginyeria Electrònica i Biomèdica: Envíos recientes
Mostrando ítems 41-60 de 779
Atomic diffusion induced by stress relaxation in InGaAs/GaAs epitaxial layers
The origin of the microscopic inhomogeneities in InxGa12xAs layers grown on GaAs by molecular beam epitaxy is analyzed through the optical absorption spectra near the band gap. It is seen that, for relaxed thick layers of ...
Encapsulated UHF antenna for early and long-term concrete monitoring
This paper introduces a novel encapsulated 3D-printed UHF antenna system for early-stage and long-term concrete monitoring. Our goal is to leverage the capacities of additive manufacturing techniques to enhance antenna ...
X-ray photoelectron spectroscopy analysis of ion¿beam¿induced oxidation of GaAs and AlGaAs
The oxidation of GaAs and AlGaAs targets subjected to O2+ bombardment has been analyzed, using in situ x¿ray photoelectron spectroscopy, as a function of time until steady state is reached. The oxides formed by the O2+ ...
Statistical analysis of coding for molecular properties in the olfactory bulb
The relationship between molecular properties of odorants and neural activities is arguably one of the most important issues in olfaction and the rules governing this relationship are still not clear. In the olfactory bulb ...
Low-cost 3D printed inertial flow microfluidic devices for cellular isolation in liquid biopsies
Microfluidic devices for biomedical applications manufactured by conventional lithography often lack flexibility in design integration. Limitations in aspect ratio or in the ability to integrate microfluidic elements located ...
Pulsed-temperature metal oxide gas sensors for microwatt power consumption
Metal Oxide (MOX) gas sensors rely on chemical reactions that occur efficiently at high temperatures, resulting in too-demanding power requirements for certain applications. Operating the sensor under a Pulsed-Temperature ...
Biosensors Integration in blood-brain barrier-on-a-chip: emerging platform for monitoring neurodegenerative diseases
Over the most recent decades, the development of new biological platforms to study disease progression and drug efficacy has been of great interest due to the high increase in the rate of neurodegenerative diseases (NDDs). ...
Residual thermomechanical stresses in thinned-chip assemblies
A new technology for the three-dimensional (3-D) stacking of very thin chips on a substrate is currently under development within the ultrathin chip stacking (UTCS) Esprit Project 24910. In this work, we present the ...
The Ariel payload design post-PDR
The Ariel space mission will characterize spectroscopically the atmospheres of a large and diverse sample of hundreds of exoplanets. Through the study of targets with a wide range of planetary parameters (mass, density, ...
From ethanolamine precursor towards ZnO - How N is released from the experimental and theoretical points of view
This work presents experimental and computational studies on ZnO formation after decomposition of a sol-gel precursor containing ethanolamine and Zn(II) acetate. The structural modifications suffered during decomposition ...
Impedance field and transition from thermal to shot noise in Cd1-xZnxTe semi-insulating Ohmic detectors
Within a drift-diffusion model we investigate the role of the self-consistent electric field in determining the impedance field of a macroscopic Ohmic (linear) resistor made by a compensated semi-insulating semiconductor ...
Learning of chunking sequences in cognition and behavior
We often learn and recall long sequences in smaller segments, such as a phone number 858 534 22 30 memorized as four segments. Behavioral experiments suggest that humans and some animals employ this strategy of breaking ...
Erbium emission in MOS light emitting devices: from energy transfer to direct impact excitation
The electroluminescence (EL) at 1.54 µm of metal-oxide-semiconductor (MOS) devices with Er3+ ions embedded in the silicon-rich silicon oxide (SRSO) layer has been investigated under different polarization conditions and ...
Suboptimal filtering and nonlinear time scale transformation for the analysis of multiexponential decays
Multiexponential decays may contain time-constants differing in several orders of magnitudes. In such cases, uniform sampling results in very long records featuring a high degree of oversampling at the final part of 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 ...
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 ...
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 ...
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 ...
Finite Element Analysis of Electrically Excited Quartz Tuning Fork Devices
Quartz Tuning Fork (QTF)-based Scanning Probe Microscopy (SPM) is an important field of research. A suitable model for the QTF is important to obtain quantitative measurements with these devices. Analytical models have the ...
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 ...
