Enginyeria Electrònica i Biomèdica: Recent submissions
Now showing items 141-160 of 781
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 ...
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 ...
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 ...
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). ...
A micromachined thermoelectric sensor for natural gas analysis: Multivariate calibration results
The potential use of a micromachined thermopile based sensor device for analyzing natural gas is explored. The sensor consists of a thermally isolated hotplate, which is heated by the application of a sequence of programmed ...
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, ...
The importance of back contact modification in Cu2ZnSnSe4 solar cells: The role of a thin MoO2 layer
Cu2ZnSn(SxSe1−x)4 (CZTSSe) photovoltaic absorbers could be the earth-abundant and low toxicity replacement for the already commercialized CuIn1−xGaxSe2 (CIGS) thin film technology. In order to make this possible, specific ...
Insights into interface and bulk defects in a high efficiency kesterite-based device
This work provides a detailed analysis of a high efficiency Cu2ZnSnSe4 device using a combination of advanced electron microscopy and spectroscopy techniques. In particular, a full picture of the different defects present ...
Ambient intelligence application based on environmental measurements performed with an assistant mobile robot
This paper proposes the use of an autonomous assistant mobile robot in order to monitor the environmental conditions of a large indoor area and develop an ambient intelligence application. The mobile robot uses single high ...
Using enhanced number and brightness to measure protein oligomerization dynamics in live cells
Protein dimerization and oligomerization are essential to most cellular functions, yet measurement of the size of these oligomers in live cells, especially when their size changes over time and space, remains a challenge. ...
Study of quality controls for stability check of the ROIs of a ketones mixture in different GC-IMS measurement campaigns
GC-IMS is a very good complementary technique to traditional GC-MS, that presents some advantages, but also, some disadvantages such as misalignments produced by many parameters affecting the equipment stability. The ...
Modulation of the electroluminescence emission from ZnO/Si NCs/p-Si light-emitting devices via pulsed excitation
In this work, the electroluminescence (EL) emission of zinc oxide (ZnO)/Si nanocrystals (NCs)-based light-emitting devices was studied under pulsed electrical excitation. Both Si NCs and deep-level ZnO defects were found ...
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 ...
Quantitative GC-TCD measurements of major flatus components: a preliminary analysis of the diet effect
The impact of diet and digestive disorders in flatus composition remains largely unexplored. This is partially due to the lack of standardized sampling collection methods, and the easy atmospheric contamination. This paper ...
Observation of B0→¯¯¯D0K+K− and Evidence for B0s→¯¯¯D0K+K−
The first observation of the decay B 0 → ¯¯¯ D 0 K + K − is reported from an analysis of 0.62 fb − 1 of p p collision data collected with the LHCb detector. Its branching fraction is measured relative to that of the ...
Model for the emission of Si+ ions during oxygen bombardment of Si(100) surfaces
The variation in the emission of Si+ ions from ion-beam-induced oxidized silicon surfaces has been studied. The stoichiometry and the electronic structure of the altered layer has been characterized using x-ray photoelectron ...
A novel hybrid nanofibrous strategy to target progenitor cells for cost-effective in situ angiogenesis
Although the impact of composites based on Ti-doped calcium phosphate glasses is low compared with that of bioglass, they have been already shown to possess great potential for bone tissue engineering. Composites made of ...
Conduction mechanisms and charge storage in Si-nanocrystals metal-oxide-semiconductor memory devices studied with conducting atomic force microscopy
In this work, we demonstrate that conductive atomic force microscopy (C-AFM) is a very powerful tool to investigate, at the nanoscale, metal-oxide-semiconductor structures with silicon nanocrystals (Si-nc) embedded in the ...
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, ...
Quantitative parameters for the examination of InGaN QW multilayers by low-loss EELS
We present a detailed examination of a multiple InxGa1−xN quantum well (QW) structure for optoelectronic applications. The characterization is carried out using scanning transmission electron microscopy (STEM), combining ...
