Enginyeria Electrònica i Biomèdica: Recent submissions
Now showing items 161-180 of 781
Sliding window multi-curve resolution: application to gas chromatography - ion mobility spectrometry
Blind source separation (BSS) techniques aim to extract a set of source signals from a measured mixture in an unsupervised manner. In the chemical instrumentation domain source signals typically refer to time-varying analyte ...
Measurements of B+c Production and Mass with the B+c→J/ψπ+ Decay
Measurements of B + c production and mass are performed with the decay mode B + c → J / ψ π + using 0.37 fb − 1 of data collected in p p collisions at √ s = 7 TeV by the LHCb experiment. The ratio of the production ...
1.84 micron emission of Tm3+ sensitized by Yb3+ ions in monoclinic KGd(WO4)2 single crystals
By exciting at 940 nm, we have characterized the 1.84 m near infrared emission of trivalent thulium ions in Yb3+, Tm3+:KGd WO4 2 single crystals as a function of the dopant concentration and temperature, from 10 K to room ...
Measurement of charged particle multiplicities in pp collisions at t √s =7 TeV in the forward region
Charged particle production in proton-proton collisions is studied with the LHCb detector at a centre-of-mass energy of √s = 7 TeV in different intervals of pseudorapidity η. Charged particles are reconstructed close to ...
Nanocrystalline SnO2 by liquid pyrolisis
Liquid pyrolysis is presented as a new production method of SnO2 nanocrystalline powders suitable for gas sensor devices. The method is based on a pyrolytic reaction of high tensioned stressed drops of an organic solution ...
Locally grown SnO2 NWs as low power ammonia sensor
Localized growth of SnO2 nanowires on top of CMOS compatible micromembranes that incorporate a buried heater and prepatterned interdigitated electrodes has been achieved that presents the advantage that it allows to easily ...
Vibrational and crystalline properties of polymorphic CuInC2 (C=Se,S) chalcogenides
This paper deals with the analysis of the vibrational and crystallographic properties of CuInC2 sC=S,Sed chalcogenides. Experimentally, evidence on the coexistence in epitaxial layers of domains with different crystalline ...
Cells as active particles in asymmetric potentials: Motility under external gradients
Cell migration is a crucial event during development and in disease. Mechanical constraints and chemical gradients can contribute to the establishment of cell direction, but their respective roles remain poorly understood. ...
A low-cost approach to low-power gas sensors based on self-heating effects in large arrays of nanostructures
The usual operation of a conductometric sensor device requires of an external energy source (i.e. an embedded heater). In the last years, the Joule effect in the sensing material, the so called self-heating effect, offered ...
Precision Measurement of CP Violation in B0S→J/ΨK+K− Decays
The time-dependent C P asymmetry in B 0 s → J / ψ K + K − decays is measured using p p collision data, corresponding to an integrated luminosity of 3.0 fb − 1 , collected with the LHCb detector at center-of-mass energies ...
Time resolution and radiation tolerance of depleted CMOS sensors
Depleted Monolithic Active Pixel Sensors (DMAPS), also known as depleted CMOS sensors, are extremely attractive for particle physics experiments. As the sensing diode and readout electronics can be integrated on the same ...
Site-specific growth and in situ integration of different nanowire material networks on a single chip: towards a nanowire-based electronic nose for gas detection
A new method for the site-selective synthesis of nanowires has been developed to enable material growth with defined morphology and at the same time different composition on the same chip surface. The chemical vapour ...
Analytical Physical Model for Electrolyte Gated Organic Field Effect Transistors in the Helmholtz Approximation
The analytical physical modeling of undoped electrolyte gated organic field effect transistors (EGOFETs) in the Helmholtz approximation is presented. A compact analytical model for the current–voltage (I–V) characteristics, ...
SiC-Based MIS gas sensor for high water vapor environments
In this work we will prove that SiC-based MIS capacitors can work in environments with extremely high concentrations of water vapor and still be sensitive to hydrogen, CO and hydrocarbons, making these devices suitable for ...
MicroLED arrays—A perspective beyond displays
MicroLEDs, particularly when integrated with CMOS microelectronics, represent a significant advancement in nitride technology. While large-area, high-power LEDs for solid-state lighting have seen extensive optimization, ...
Analysis by optical absorption and transmission electron microscopy of the strain inhomogeneities in InGaAs/InP strained layers
Optical absorption spectra and transmission electron microscopy (TEM) observations on InGaAs/InP layers under compressive strain are reported. From the band¿gap energy dispersion, the magnitude of the strain inhomogeneities. ...
Silicon quantum dots embedded in a SiO2 matrix: From structural study to carrier transport properties
We study the details of electronic transport related to the atomistic structure of silicon quantum dots embedded in a silicon dioxide matrix using ab initio calculations of the density of states. Several structural and ...
Silicon nanocrystals as an enabling material for silicon Ppotonics
Silicon nanocrystals (Si-nc) is an enabling material for silicon photonics, which is no longer an emerging field of research but an available technology with the first commercial products available on the market. In this ...
Spectroscopic ellipsometry study of Cu2ZnSnSe4 bulk crystals
Using spectroscopic ellipsometry we investigated and analyzed the pseudo-optical constants of Cu2ZnSnSe4 bulk crystals, grown by the Bridgman method, over 0.8-4.5 eV photon energy range. The structures found in the spectra ...
Observation of D0−¯¯¯D0 Oscillations
We report a measurement of the time-dependent ratio of D 0 → K + π − to D 0 → K − π + decay rates in D * + -tagged events using 1.0 fb − 1 of integrated luminosity recorded by the LHCb experiment. We measure the mixing ...
