Enginyeria Electrònica i Biomèdica: Envíos recientes
Mostrando ítems 21-40 de 787
Self-Powered Portable Electronic Reader for Point-of-Care Amperometric Measurements
In this work, we present a self-powered electronic reader (e-reader) for point-of-care diagnostics based on the use of a fuel cell (FC) which works as a power source and as a sensor. The self-powered e-reader extracts the ...
Field Enhancement of Multiphoton Induced Luminescence Processes in ZnO Nanorods
The near-ultraviolet photoluminescence of ZnO nanorods induced by multiphoton absorption of unamplified Ti:sapphire pulses is investigated. Power dependence measurements have been conducted with an adaptation of the ...
Multi-compartmentalized electrochemical sensing platforms for monitoring cascade enzymatic reactions
Designing an electrochemical biosensor with the required features is a complex process involving multiple factors. For instance, nanocomposite materials used ensure the adaptation of the sensor to specific parameters on ...
Metal oxide aerogels with controlled crystallinity and faceting from the epoxide-driven cross-linking of colloidal nanocrystals
We present a novel method to produce crystalline oxide aerogels which is based on the cross linking of preformed colloidal nanocrystals (NCs) triggered by propylene oxide (PO). Ceria and titania were used to illustrate ...
Influence of the (111) twinning on the formation of diamond cubic/diamond hexagonal heterostructures in Cu-catalyzed Si nanowires
The occurrence of heterostructures of cubic silicon/hexagonal silicon as disks defined along the nanowire (111) growth direction is reviewed in detail for Si nanowires obtained using Cu as catalyst. Detailed measurements ...
The Structural, Electronic, and Optical Properties of Ge/Si Quantum Wells: Lasing at a Wavelength of 1550 nm
The realization of a fully integrated group IV electrically driven laser at room temperature is an essential issue to be solved. We introduced a novel group IV side-emitting laser at a wavelength of 1550 nm based on a ...
Unidirectional Synchronization of Silicon Optomechanical Nanobeam Oscillators by External Feedback
The remote synchronization of oscillators is essential for improving the performance, efficiency, and reliability of various systems and technologies, ranging from everyday telecommunications to cutting-edge scientific ...
Spectroscopic characterization of phases formed by high-dose carbon ion implantation in silicon
High-dose carbon-ion-implanted Si samples have been analyzed by infrared spectroscopy, Raman scattering, and x-ray photoelectron spectroscopy (XPS) correlated with transmission electron microscopy. Samples were implanted ...
MoxC heterostructures as efficient co-catalysts in robust MoxC/g-C3N4 nanocomposites for photocatalytic H2 production from ethanol
In this work, we studied new materials free of noble metals that are active in photocatalytic H2 generation from ethanol aqueous solutions (EtOHaq), which can be obtained from biomass. MoxC/g-C3N4 photocatalysts containing ...
Control of microenvironmental cues with a smart biomaterial composite promotes endothelial progenitor cell angiogenesis
Abstract: Smart biomaterials play a key role when aiming at successful tissue repair by means of regenerative medicine approaches, and are expected to contain chemical as well as mechanical cues that will guide the ...
Transport in quantum dot stacks using the transfer Hamiltonian method in self-consistent field regime
The non-coherent rate equation approach to the electrical transport in a serial quantum dot system is presented. The charge density in each quantum dot is obtained using the transfer Hamiltonian formalism for the current ...
Corridor Gas-leak localization using a mobile robot with a Photo Ionization Detector Sensor
The use of an autonomous mobile robot to locate gas-leaks and air quality monitoring in indoor environments are promising tasks that will avoid risky human operations. However, these are challenging tasks due to the chaotic ...
Fine speckle contrast in InGaAs/InP systems: Influence of layer thickness, missmatch, and growing temperature
This work is focused on the study of the fine speckle contrast present in planar view observations of matched and mismatched InGaAs layers grown by molecular beam epitaxy on InP substrates. Our results provide experimental ...
The research-teaching nexus and its influence on student learning
The relationship between teaching and research in universities has been widely studied in the higher education literature, but no clear relationship between the two has been identified. Nevertheless, in recent years, ...
Towards nanostructured ITO-based electrochemical sensors: Fabrication, characterization and functionalization
The need for miniaturized, low-cost and ultrasensitive electrochemical sensors has motivated the search and study of new nanostructured materials. We propose nanostructured indium tin oxide (ITO) electrodes as a promising ...
Simultaneous para-ferrimagnetic, metal-insulator, and orthorhombic-monoclinic transitions in YBaCo2O5.50
Ultrahigh resolution synchrotron x-ray powder diffraction shows up two structural transitions in the layered cobaltite YBaCo2O5.50. The room-temperature orthorhombic structure transforms, on cooling below TMI≃295 K, to ...
Development of high voltage-CMOS sensors within the CERN-RD50 collaboration
This paper presents work done by the CERN-RD50 collaboration to develop and study monolithic CMOS sensors for future hadron colliders, especially in terms of radiation tolerance, time resolution and granularity. Currently ...
Fabrication, Performances and Aging of Flexible Gas Sensor Platforms
Flexible electronics are attracting much interest in gas sensor field on on-site monitoring applications due to their wear ability, lightweight and low-cost production. These performances are fully accomplished by silver-based ...
Alpsnmr: an r package for signal processing of fully untargeted nmr-based metabolomics
Nuclear magnetic resonance (NMR)-based metabolomics is widely used to obtain metabolic fingerprints of biological systems. While targeted workflows require previous knowledge of metabolites, prior to statistical analysis, ...
An ultra-low power wake-Up timer compatible with n-FET based flexible technologies
Flexible integrated circuits (FlexICs) have drawn increasing attention, particularly in remote sensors and wearables operating in a limited power budget. Here, we present an ultra-low power timer designed to wake-up an ...
