Enginyeria Electrònica i Biomèdica: Enviaments recents
Ara mostrant els elements 461-480 de 787
Mejora de la implicación del alumnado en “Diseño y síntesis de sistemas digitales” usando e-learning colaborativo, gamificación y aprendizaje basado en problemas
[eng] During the last 3 years, it has been observed that the students do not have a solid base to understand the concepts that are introduced in the subject. In addition, the attitude of the students, in general, is ...
Online decorrelation of humidity and temperature in chemical sensors for continuous monitoring
A method for online decorrelation of chemical sensor signals from the effects of environmental humidity and temperature variations is proposed. The goal is to improve the accuracy of electronic nose measurements for ...
Structural and optical properties of high quality zinc-blende/wurtzite GaAs nanowire heterostructures
The structural and optical properties of three different kinds of GaAs nanowires with 100% zinc-blende structure and with an average of 30% and 70% wurtzite are presented. A variety of shorter and longer segments of ...
Challenges and future prospects on 3D in-vitro modeling of the neuromuscular circuit
Movement of skeletal-muscle fibers is generated by the coordinated action of several cells taking part within the locomotion circuit (motoneurons, sensory-neurons, Schwann cells, astrocytes, microglia, and muscle-cells). ...
On the artificial creation of the EL2 center by means of boron implantation in gallium arsenide
In the present work, an analysis of the dark and optical capacitance transients obtained from Schottky Au:GaAs barriers implanted with boron has been carried out by means of the isothermal transient spectroscopy (ITS) and ...
Color QR Codes for Smartphone-Based Analysis of Free Chlorine in Drinking Water
Free chlorine (FC) plays a crucial role in ensuring the safety of drinking water by effectively inactivating pathogenic microorganisms. However, traditional methods for measuring FC levels often require specialized equipment ...
Spatial mapping of exciton lifetimes in single ZnO nanowires
We investigate the spatial dependence of the exciton lifetimes in single ZnO nanowires. We have found that the free exciton and bound exciton lifetimes exhibit a maximum at the center of nanowires, while they decrease by ...
Avoiding sensor blindness in Geiger mode avalanche photodiode arrays fabricated in a conventional CMOS process
The need to move forward in the knowledge of the subatomic world has stimulated the development of new particle colliders. However, the objectives of the next generation of colliders sets unprecedented challenges to the ...
Fuzzy k-NN applied to mould detection
The possibility to detect Aspergillus versicolor growing on different building materials by a metal oxide sensor array is studied. Results show that an accurate classification rate of 89 ± 3% can be obtained combining an ...
Intense green-yellow electroluminescence from Tb+-implanted silicon-rich silicon nitride/oxide light emitting devices
High optical power density of 0.5 mW/cm2, external quantum efficiency of 0.1%, and population inversion of 7% are reported from Tb+-implanted silicon-rich silicon nitride/oxide light emitting devices. Electrical and ...
Modified Bis-pyrimidine Clamps for Triplex Formation and Their Usein SARS-CoV‑2 Detection
The formation of nucleic acid triple helices (“triplexes”) is an area of great interest due to their potential role in thenatural and artificial regulation of gene expression or for use in analytical, diagnostic, or synthetic ...
Double stent-retriever as the first-line approach in mechanical thrombectomy: a randomized in vitro evaluation
Background A repeated number of passes during mechanical thrombectomy leads to worse clinical outcomes in acute ischemic stroke. Initial experiences with the simultaneous double stent-retriever (double-SR) technique as the ...
Anomalous optical and electrical recovery process of photoquenched EL2 defect produced by oxygen and boron ion implantation in gallium arsenide
The optical and electrical recovery processes of the metastable state of the EL2 defect artificially created in n‐type GaAs by boron or oxygen implantation are analyzed at 80 K using optical isothermal transient spectroscopy. ...
Lighteligence. Second prototype report
Projecte LIGHTELLIGENCE (AGAUR 2010) dut a terme a la Fundació Institut de Recerca en Energia de Catalunya (IREC)
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 ...
Copropagating pump and probe experiments on Si-nc in SiO2 rib waveguides doped with Er: The optical role of non-emitting ions
We present a study that demonstrates the limits for achieving net optical gain in an optimized waveguide where Si nanoclusters in SiO2 codoped with Er3+ are the active material. By cross correlating absorption losses ...
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 ...
AMADEUS: advanced manipulation for deep underwater sampling
AMADEUS is a dexterous subsea robot hand incorporating force and slip contact sensing, using fluid filled tentacles for fingers. Hydraulic pressure variations in each of three flexible tubes (bellows) in each finger create ...
Energetics and carrier transport in doped Si/SiO2 quantum dots
In the present theoretical work we have considered impurities, either boron or phosphorous, located at different substitutional sites in silicon quantum dots (Si-QDs) with diameters around 1.5 nm, embedded in a SiO2 matrix. ...
Self-heating effects in large arrangements of randomly oriented carbon nanofibers: Application to gas sensors
Herein, we prove that self-heating effects occur in sensor films made of randomly oriented nanoparticles (electro-sprayed, drop-casted and paint-brushed films of carbon nanofibers). A 2-point calibration method, reliable ...
