Enginyeria Electrònica i Biomèdica: Envíos recientes
Mostrando ítems 201-220 de 781
Immuno-μSARS2 Chip: A Peptide-Based Microarray to Assess COVID-19 Prognosis Based on Immunological Fingerprints
A multiplexed microarray chip (Immuno-μSARS2) aiming at providing information on the prognosis of the COVID-19 has been developed. The diagnostic technology records information related to the profile of the immunological ...
Anomalous crossover between thermal and shot noise in macroscopic diffusive conductors
We predict the existence of an anomalous crossover between thermal and shot noise in macroscopic diffusive conductors. We first show that, besides thermal noise, these systems may also exhibit shot noise due to fluctuations ...
Simulation of STEM-HAADF image contrast of Ruddlesden-Popper faulted LaNiO<sub>3</sub> thin films
LaNiO3 (LNO) thin films are widely used as electrode materials. Yet, their properties greatly depend on such parameters as strain state and defect density. In this work we present a detailed structural characterization of ...
Tuning branching in ceria nanocrystals
Branched nanocrystals (NCs) enable high atomic surface exposure within a crystalline network that provides avenues for charge transport. This combination of properties makes branched NCs particularly suitable for a range ...
A Novel Approach for a Chip-Sized Scanning Optical Microscope
The recent advances in chip-size microscopy based on optical scanning with spatially resolved nano-illumination light sources are presented. This new straightforward technique takes advantage of the currently achieved ...
Partial and perfect dislocation nucleation at the onset of stress relaxation in In0.60Ga0.40As active layers of high mobility transistors grown on InP
The morphology of compressive InxGa1−xAs/In0.52Al0.48As layers grown on (100)‐InP substrates by molecular beam epitaxy was observed by transmission electron microscopy. A preliminary analysis of the network of misfit ...
An Instantaneous low-cost point-of-care anemia detection device
We present a small, compact and portable device for point-of-care instantaneous early detection of anemia. The method used is based on direct hematocrit measurement from whole blood samples by means of impedance analysis. ...
Experimental study of the structural and magnetic properties of gamma-Fe2O3 nanoparticles.
Structural and magnetic properties of -Fe2O3 nanoparticles annealed at 200 and 250 °C have been studied by using high resolution transmission electron microscopy TEM, electron energy loss spectroscopy, x-ray diffraction, ...
Sintesis por implantacion ionica de nanocristales semiconductores para dispositivos en tecnologia de Si
En este artículo se estudia la síntesis de nanocristales semiconductores elementales y compuestos elaborados por implantación iónica en SiO2. En el caso de los nanocristales de Si, se ha desarrollado un estudio sistemático ...
Effects of thickness on the cation segregation in epitaxial (001) and (110) La2/3Ca1/3MnO3 thin films
Electron-energy-loss spectroscopy is used to map composition and electronic states in epitaxial La2/3Ca1/3MnO3 LCMO films of various thicknesses grown on SrTiO3 001 and 110 substrates. For relatively thick films 20 nm ...
Raman microprobe characterization of electrodeposited S-rich CuIn(S,Se)2 for photovoltaic applications: Microstructural analysis
This article reports a detailed Raman scattering and microstructural characterization of S-rich CuIn(S,Se)2 absorbers produced by electrodeposition of nanocrystalline CuInSe2 precursors and subsequent reactive annealing ...
Resolving material-specific structures within Fe₃O₄|γ-Mn₂O₃ core|shell nanoparticles using anomalous small-angle X-ray scattering
Here it is demonstrated that multiple-energy, anomalous small-angle X-ray scattering (ASAXS) provides significant enhancement in sensitivity to internal material boundaries of layered nanoparticles compared with the ...
A parts per billion (ppb) sensor for NO2 with microwatt (μW) power requirements based on micro light plates
A film of gas sensitive ZnO nanoparticles has been coupled with a low-power micro light plate (μLP) to achieve a NO2-parts-per-billion conductometric gas sensor operating at room temperature. In this μLP configuration, an ...
Biophysical evaluation of antiparallel triplexes for biosensing and biomedical applications
Polypyrimidine sequences can be targeted by antiparallel clamps forming triplex structures either for biosensing or therapeutic purposes. Despite its successful implementation, their biophysical properties remain to be ...
Direct evidence for an interdiffused intermediate layer in bi-magnetic core-shell nanoparticles
Core-shell nanoparticles attract continuously growing interest due to their numerous applications, which are driven by the possibility of tuning their functionalities by adjusting structural and morphological parameters. ...
Quasi real-time Raman studies on the growth of Cu-In-S thin films
In this work annealing and growth of CuInS2 thin films is investigated with quasireal-time in situ Raman spectroscopy. During the annealing a shift of the Raman A1 mode towards lower wave numbers with increasing temperature ...
Sensitization of Er3+ emission at 1.5m (mu)m by Yb3+ in KYb(WO4)2 single crystals
We present our recent achievements in the growth and spectroscopic characterization of KYb(WO4)2 crystals doped with erbium ions ~hereafter KYbW:Er!. We grew single crystals of KYbW:Er at several erbium concentrations ...
Surface roughness in InGaAs Channels of HEMT devices depending on the growth temperature: strain induced or due to alloy decomposition
InAlAs/InGaAs/InP based high electron mobility transistor devices have been structurally and electrically characterized, using transmission electron microscopy and Raman spectroscopy and measuring Hall mobilities. The ...
Copper (II) oxide nanowires for p-type conductometric NH3 sensing
Copper (II) oxide (CuO) is a metal oxide suitable for developing solid state gas sensors. Nevertheless, a detailed insight into the chemical-to-electrical transduction mechanisms between gas molecules and this metal oxide ...
Structural and functional characterization of (110)-oriented epitaxial La2/3Ca1/3MnO3 electrodes and SrTiO3 tunnel barriers
La2/3Ca1/3MnO3 (LCMO) films have been deposited on (110)-oriented SrTiO3 (STO) substrates. X-ray diffraction and high-resolution electron microscopy reveal that the (110) LCMO films are epitaxial and anisotropically in-plane ...
