Enginyeria Electrònica i Biomèdica: Envíos recientes
Mostrando ítems 261-280 de 781
Femtosecond Laser Lift-Off with Sub-Bandgap Excitation for Production of Free-Standing GaN Light-Emitting Diode Chips
Laser lift‐off (LLO) is commonly applied to separate functional thin films from the underlying substrate, in particular light‐emitting diodes (LEDs) on a gallium nitride (GaN) basis from sapphire. By transferring the LED ...
DNA-origami-driven lithography for patterning on gold surfaces with sub-10 nm resolution
Sub-10 nm lithography of DNA patterns is achieved using the DNA-origami stamping method. This new strategy utilizes DNA origami to bind a preprogrammed DNA ink pattern composed of thiol-modified oligonucleotides on gold ...
BPSK to ASK signal conversion using injection-locked oscillators-Part I: theory
This paper presents a new method and circuit for the conversion of binary phase-shift keying (BPSK) signals into amplitude shift keying signals. The basic principles of the conversion method are the superharmonic injection ...
Alloy inhomogeneities in InAlAs strained layers grown by MBE
Transmission electron microscopy studies have been performed to characterize InxAl1−xAs layers grown by molecular beam epitaxy on (100) InP substrates. The first observations of compositional nonuniformities in strained ...
Active gating as a method to inhibit the crosstalk of Single Photon Avalanche Diodes in a shared well
This work presents low noise readout circuits for silicon pixel detectors based on Geiger mode avalanche photodiodes. Geiger mode avalanche photodiodes offer a high intrinsic gain as well as an excellent timing accuracy. ...
Long-range order of Ni2+ and Mn4+ and ferromagnetism in multiferroic (Bi0.9La0.1)2NiMnO6 thin films
Epitaxial thin films of biferroic Bi1−xLax 2NiMnO6 have been grown on SrTiO3 001 substrates. High resolution electron microscopy, energy-loss spectroscopy and synchrotron radiation have been used to demonstrate that, under ...
The complete Raman spectrum of nanometric SnO2 particles
The complete Raman spectrum of SnO2 nanoparticles in presented and analyzed. In addition to the "classical" modes observed in the rutile structure, two other regions shown Raman activity for nanoparticles. The Raman bands ...
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. ...
Photoelectrical reading in ZnO/Si NCs/p-Si resistive switching devices
The increasing need for efficient memories with integrated functionalities in a single device has led the electronics community to investigate and develop different materials for resistive switching (RS) applications. Among ...
Activation of visible up-conversion luminescence in transparent and conducting ZnO:Er:Yb films by laser annealing
Transparent and conducting ZnO:Er:Yb thin films with visible up-conversion (660-nm emission under 980-nm excitation) were fabricated by RF magnetron sputtering. The as-deposited films were found to be transparent and ...
Gas collisions and pressure quenching of the photoluminescence of silicon nanopowder grown by plasma-enhanced chemical vapor deposition
The quenching of the photoluminescence of Si nanopowder grown by plasma-enhanced chemical vapor deposition due to pressure was measured for various gases ( H2, O2, N2, He, Ne, Ar, and Kr) and at different temperatures. The ...
Suspended Planar-Array Chips for Molecular Multiplexing at the Microscale
Suspended planar-array (SPA) chips embody millions of individual miniaturized arrays to work in extremely small volumes. Here, the basis of a robust methodology for the fabrication of SPA silicon chips with on-demand ...
Suspended planar-array chips for molecular multiplexing at the microscale
A novel suspended planar-array chips technology is described, which effectively allows molecular multiplexing using a single suspended chip to analyze extraordinarily small volumes. The suspended chips are fabricated by ...
Observation of two new Ξb- Baryon resonances
Two structures are observed close to the kinematic threshold in the Ξ 0 b π − mass spectrum in a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb − 1 , recorded by the LHCb ...
Amplitude Analysis of the Decay B 0 → KS0 π+π- and First Observation of the CP Asymmetry in B 0 →k∗ (892)-π+
The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay ¯ B 0 → K 0 S π + π − is studied using a p p collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity ...
Measurement of Antiproton Production in p-He Collisions at sNN =110 GeV
The cross section for prompt antiproton production in collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest is measured with the LHCb experiment from a data set corresponding to an integrated ...
First Observation of the Decay B∗s2(5840)0→B*+K− and Studies of Excited B0s Mesons
The properties of the orbitally excited ( L = 1 ) B 0 s states are studied by using 1.0 fb − 1 of p p collisions at √ s = 7 TeV collected with the LHCb detector. The first observation of the B ∗ s 2 ( 5840 ) 0 meson ...
Measurement of the CP Violation Parameter AΓ in D0→K+K− and D0→π+π− Decays
Asymmetries in the time-dependent rates of D-0 -> K+K- and D-0 -> pi(+)pi(-)decays are measured in a pp collision data sample collected with the LHCb detector during LHC Run 1, corresponding to an integrated luminosity of ...
Observation of B+c→D0K+ Decays
Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb-1, recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the Bc+→D0K+ decay is observed with a statistical significance ...
Observation of a New Ξb- Resonance
From samples of p p collision data collected by the LHCb experiment at √ s = 7 , 8 and 13 TeV, corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb − 1 , respectively, a peak in both the Λ 0 b K − and Ξ 0 b ...
