Search results for " electronics"

showing 10 items of 580 documents

Development and characterization of xyloglucan-poly(vinyl alcohol) hydrogel membrane for Wireless Smart wound dressings

2018

Abstract Hydrogel-based smart wound dressings that combine the traditional favourable properties of hydrogels as skin care materials with sensing functions of relevant biological parameters for the remote monitoring of wound healing are under development. In particular, lightweight, ultra-high frequency radiofrequency identification (UHF RFID) sensor are adjoined to xyloglucan-poly(vinyl alcohol) hydrogel films to battery-less monitor moisture level of the bandage in contact with the skin, as well as wireless transmit the measured data to an off-body reader. This study investigates the swelling behavior of the hydrogels in contact with simulated biological fluids, and the modification of th…

PermittivityVinyl alcoholMaterials sciencePolymers and PlasticsGeneral Physics and Astronomy02 engineering and technologyDielectricPhysics and Astronomy (all)030207 dermatology & venereal diseases03 medical and health scienceschemistry.chemical_compound0302 clinical medicineHydrogels; Wound dressings; Dielectric properties; Swelling; RFID sensors; Epidermal electronicsMaterials ChemistrymedicineHydrogel membraneEpidermal electronicSwellingRFID sensorsPolymers and PlasticRFID sensorOrganic Chemistrytechnology industry and agricultureHydrogelsSettore ING-INF/02 - Campi Elettromagnetici021001 nanoscience & nanotechnologySettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Characterization (materials science)Dielectric propertieXyloglucanHydrogelSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiWound dressingschemistryWound dressingDielectric propertiesSelf-healing hydrogelsSettore CHIM/07 - Fondamenti Chimici Delle TecnologieSwellingmedicine.symptomSettore ICAR/08 - Scienza Delle Costruzioni0210 nano-technologyBiomedical engineeringEpidermal electronics
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Optical, Structural and Paramagnetic Properties of Eu-Doped Ternary Sulfides ALnS2 (A = Na, K, Rb; Ln = La, Gd, Lu, Y)

2015

Eu-doped ternary sulfides of general formula ALnS2 (A = Na, K, Rb; Ln = La, Gd, Lu, Y) are presented as a novel interesting material family which may find usage as X-ray phosphors or solid state white light emitting diode (LED) lighting. Samples were synthesized in the form of transparent crystalline hexagonal platelets by chemical reaction under the flow of hydrogen sulfide. Their physical properties were investigated by means of X-ray diffraction, time-resolved photoluminescence spectroscopy, electron paramagnetic resonance, and X-ray excited fluorescence. Corresponding characteristics, including absorption, radioluminescence, photoluminescence excitation and emission spectra, and decay k…

PhotoluminescenceAnalytical chemistrywhite light emitting diodelcsh:Technologylaw.inventionParamagnetismlawluminescenceGeneral Materials SciencePhotoluminescence excitationElectron paramagnetic resonanceSpectroscopylcsh:Microscopyluminescence; white light emitting diode; Eu<sup>2+</sup>; ternary sulfide; EPRlcsh:QC120-168.85Eu2+lcsh:QH201-278.5Chemistrylcsh:TRadioluminescencelcsh:TA1-2040Excited statelcsh:Descriptive and experimental mechanicslcsh:Electrical engineering. Electronics. Nuclear engineeringternary sulfideEPRTernary operationlcsh:Engineering (General). Civil engineering (General)lcsh:TK1-9971Materials; Volume 8; Issue 10; Pages: 6978-6998
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A laser-based system for a fast and accurate measurement of gain and linearity of photomultipliers

2018

This paper describes a method for the measurement of gain and linearity of photomultipliers (PMTs). Gain and linearity are two fundamental parameters to use properly a PMT in several physics experiments. In the developed system light is laser generated and adressed to the PMT through a set of optical fibers. The data acquisition system consists in a commercial 16 channel digitizer coupled to a custom front-end board. With the chosen digitizer the system is scalable to test up to 16 PMTs, with the aid of a light distribution system and a multi-channel version of the front-end board. Data analysis is performed by a custom acquisition software. A 1.5» Hamamatsu PMT is used to validate the syst…

PhotomultiplierOptical fiberMaterials scienceDistribution (number theory)Fiber Laservisible and IR photons (vacuum) (photomultipliers01 natural sciencesAnalogue electronic circuit030218 nuclear medicine & medical imaginglaw.invention03 medical and health sciences0302 clinical medicineData acquisitionOpticslawFront-end electronics for detector readout0103 physical sciencesPhoton detectors for UV visible and IR photons (vacuum) (photomultipliers HPDs others); Front-end electronics for detector readout; Analogue electronic circuits; Fiber LasersPhoton detectors for UVInstrumentationMathematical PhysicsFiber LasersData processing010308 nuclear & particles physicsbusiness.industrySettore FIS/01 - Fisica SperimentaleLinearityLaserPhoton detectors for UV visible and IR photons (vacuum) (photomultipliers HPDs others)HPDsAnalogue electronic circuitsothers)businessJournal of Instrumentation
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Comprehensive Analytical Investigation for PV Plants and Their Control System with Reduced Power Electronics Equipments

2012

This paper presents a comprehensive analysis of a power generation system from PV source and it control system with a reduced power equipments connected with a power AC grid. The absence of the boost chopper as an actuator for Maximum Power Point Tracking concurs to make the system more reliable, affordable and moreover cheaper respect to a traditional one in which the boost chopper is used. The mathematical analysis exposed in the paper shows as a three phase inverter has two degrees of freedom allowing the simultaneous MPPT control and the synchronization with the power grid. The analysis also shows the way to determine the duty cycle of the inverter to deliver active power, and eventuall…

Photovoltaic systems MPPT control Power Electronics PWM invertersSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettrici
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The upgrade of the ALICE TPC with GEMs and continuous readout

2020

Journal of Instrumentation 16(03), P03022 (2021). doi:10.1088/1748-0221/16/03/P03022

Physics - Instrumentation and DetectorsComputer sciencePhysics::Instrumentation and DetectorsFOS: Physical sciences61001 natural sciences114 Physical sciences030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicine0103 physical sciencesMicropattern gaseous detectors (MSGC GEM THGEM RETHGEM MHSP MICROPIC MICROMEGAS InGrid etc)Electronicsddc:610Detectors and Experimental TechniquesInstrumentationphysics.ins-detMathematical PhysicsCMOS readout of gaseous detectorsLarge Hadron Collider010308 nuclear & particles physicsbusiness.industryDetectorTime projection Chambers (TPC)Readout electronicsInstrumentation and Detectors (physics.ins-det)ChipUpgradeGaseous imaging and tracking detectorsGas electron multiplierALICE (propellant)businessComputer hardware
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Design, upgrade and characterization of the silicon photomultiplier front-end for the AMIGA detector at the Pierre Auger Observatory

2021

The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargue. We are very grateful to the following agencies and organizations for financial support: Argentina -Comision Nacional de Energia Atomica; Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargue; NDM Holdings and Valle Las Lenas; in gratitude for their continuing cooperation over land access; Australia -the Australian Research Council; Braz…

Physics - Instrumentation and DetectorsPhysics::Instrumentation and DetectorsAstronomyPerformance of High Energy Physics Detector01 natural sciences7. Clean energyEtc)030218 nuclear medicine & medical imaging0302 clinical medicineFront-end electronics for detector readoutAPDsInstrumentationphysics.ins-detPhoton detectors for UVMathematical PhysicsInstrumentation et méthodes en physiqueEBCCDsVisible and IR photons (solid-state) (PIN diodes APDs Si-PMTs G-APDs CCDs EBCCDs EMCCDs CMOS imagers etc)electronicsSettore FIS/01 - Fisica SperimentaleCalibration and fitting methods; Performance of High Energy Physics Detectors; Photon detectors for UVPhoton detectors for UV visible and IR photons (solid-state) (PIN diodes APDs Si-PMTs G-APDs CCDs EBCCDs EMCCDs CMOS imagers etc)Astrophysics::Instrumentation and Methods for AstrophysicsSi-PMTsInstrumentation and Detectors (physics.ins-det)charged particleAPDs; Calibration and fitting methods; Performance of High Energy Physics Detectors; Photon detectors for UV; CCDs; Cluster finding; CMOS imagers; EBCCDs; EMCCDs; Etc); Front-end electronics for detector readout; Pattern recognition; G-APDs; Si-PMTs; Visible and IR photons (solid-state) (PIN diodesAugerobservatorydensity [muon]Pattern recognition cluster finding calibration and fitting methodG-APDsChristian ministryupgradeddc:620Astrophysics - Instrumentation and Methods for Astrophysicsperformanceatmosphere [showers]Land accessCherenkov counter: waterairAstrophysics::High Energy Astrophysical PhenomenaUHE [cosmic radiation]FOS: Physical sciencesVisible and IR photons (solid-state) (PIN diodes03 medical and health sciencesPolitical sciencePattern recognition0103 physical sciencesmuon: densityFront-end electronics for detector readout; Pattern recognitionphotomultiplier: siliconHigh Energy Physicscosmic radiation: UHE[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]ddc:610CMOS imagersInstrumentation and Methods for Astrophysics (astro-ph.IM)Engineering & allied operationsscintillation counterCalibration and fitting methodsshowers: atmosphere010308 nuclear & particles physicswater [Cherenkov counter]Cluster findingAutres mathématiquesCCDsEMCCDsResearch councilefficiencyExperimental High Energy Physicssilicon [photomultiplier]Performance of High Energy Physics DetectorsHigh Energy Physics::ExperimentHumanitiesRAIOS CÓSMICOSastro-ph.IM
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Mini-MALTA: Radiation hard pixel designs for small-electrode monolithic CMOS sensors for the High Luminosity LHC

2020

Journal of Instrumentation 15(02), P02005 (2020). doi:10.1088/1748-0221/15/02/P02005

Physics - Instrumentation and DetectorsPhysics::Instrumentation and Detectorsirradiation [n]measurement methods01 natural sciencesdamage [radiation]High Energy Physics - Experimentdesign [semiconductor detector]High Energy Physics - Experiment (hep-ex)n: irradiationupgrade [ATLAS][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Detectors and Experimental TechniquesInstrumentationRadiation hardeningphysics.ins-detMathematical PhysicsFront-end electronics for detector readout ; Particle tracking detectors (Solid-state detectors) ; Radiation-hard detectors ; Solid state detectorsradiation: damageSolid State DetectorsCMOS sensorLarge Hadron Colliderpixel: sizeInstrumentation and Detectors (physics.ins-det)CMOSOptoelectronicsParticle Physics - ExperimentperformancenoiseMaterials science610FOS: Physical sciencesContext (language use)Radiation-hard DetectorsNovel high voltage and resistive CMOS sensors [6]Front-end Electronics for Detector ReadoutRadiationCapacitanceRadiation-hard detectorsemiconductor detector: pixelsize [pixel]electrode: design0103 physical sciencesParticle Tracking Detectors (Solid-state Detectors)ddc:610[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010306 general physicsdesign [electrode]pixel [semiconductor detector]Pixel010308 nuclear & particles physicsbusiness.industryhep-exATLAS: upgradeefficiencyelectronics: readoutbusinessreadout [electronics]semiconductor detector: design
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Evaluation of a commercial APD array (Avalanche PhotoDiode) for a readout detector in a hadrontherapy beam characterization application

2010

The aim of the present work is the characterization of the S8898–128–02 Avalanche PhotoDiode array (APDs) from Hamamatsu Photonics. This work includes the implementation of a readout system as well as electronic noise estimation in APDs under several conditions varying integration times and clock frequencies.

PhysicsAPDSPhysics::Instrumentation and Detectorsbusiness.industryPhysics::Medical PhysicsDetectorAstrophysics::Instrumentation and Methods for AstrophysicsAvalanche photodiodeNoise (electronics)law.inventionlawNuclear electronicsOptoelectronicsPhotonicsbusinessField-programmable gate arrayBeam (structure)IEEE Nuclear Science Symposuim &amp; Medical Imaging Conference
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MALTA: a CMOS pixel sensor with asynchronous readout for the ATLAS High-Luminosity upgrade

2018

Radiation hard silicon sensors are required for the upgrade of the ATLAS tracking detector for the High- Luminosity Large Hadron Collider (HL-LHC) at CERN. A process modification in a standard 0.18 μm CMOS imaging technology combines small, low-capacitance electrodes (∼2 fF for the sensor) with a fully depleted active sensor volume. This results in a radiation hardness promising to meet the requirements of the ATLAS ITk outer pixel layers (1.5 × 1015 neq /cm2 ), and allows to achieve a high signal-to-noise ratio and fast signal response, as required by the HL-LHC 25 ns bunch crossing structure. The radiation hardness of the charge collection to Non-Ionizing Energy Loss (NIEL) has been previ…

PhysicsActive pixel sensors ; CMOS integrated circuits ; position sensitive particle detectors ; radiation effects ; radiation hardening (electronics) ; semiconductor detectors ; solid state circuit designPixelPhysics::Instrumentation and Detectors010308 nuclear & particles physicsbusiness.industryDetectorHigh Luminosity Large Hadron Collider01 natural sciencesCapacitance030218 nuclear medicine & medical imagingSemiconductor detector03 medical and health sciences0302 clinical medicineCMOSNuclear electronics0103 physical sciencesbusinessRadiation hardeningComputer hardware
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Optimal filtering algorithm implementation in FPGAs for the ATLAS TileCal Read-Out drivers

2011

TileCal is the hadronic calorimeter of the ATLAS experiment in the LHC (CERN). Its Read-Out Drivers (RODs) process, in real time, the digitized information coming from the front-end electronics and send it to the Read-Out System. Data processing in the ROD boards is performed in Processing Unit Mezzanine Cards that use commercial DSPs to run the Optimal Filtering (OF) algorithms.

PhysicsData processingLarge Hadron ColliderCalorimeter (particle physics)Physics::Instrumentation and DetectorsATLAS experimentmedicine.anatomical_structureAtlas (anatomy)Nuclear electronicsmedicineElectronicsField-programmable gate arrayAlgorithmComputingMethodologies_COMPUTERGRAPHICS2011 IEEE Nuclear Science Symposium Conference Record
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