A5102885126- Advancements in Semiconductor Devices and Circuit Design
- Particle Detector Development and Performance
- Semiconductor materials and devices
- Silicon Carbide Semiconductor Technologies
- Particle physics theoretical and experimental studies
- Integrated Circuits and Semiconductor Failure Analysis
- Silicon and Solar Cell Technologies
- Radiation Detection and Scintillator Technologies
- Semiconductor materials and interfaces
- Induction Heating and Inverter Technology
- Advanced MEMS and NEMS Technologies
- Superconducting Materials and Applications
- Electric Motor Design and Analysis
- High-Energy Particle Collisions Research
- Muon and positron interactions and applications
- Particle Accelerators and Free-Electron Lasers
- Mechanical and Optical Resonators
- Power Quality and Harmonics
- Robotic Mechanisms and Dynamics
- Advanced DC-DC Converters
- Frequency Control in Power Systems
- Analog and Mixed-Signal Circuit Design
- Power Systems and Technologies
- Digital Storytelling and Education
- Electric Power Systems and Control
University of Manchester
2023-2025
Oak Ridge National Laboratory
2023-2024
Human Computer Interaction (Switzerland)
2024
École Polytechnique Fédérale de Lausanne
2008-2024
European Organization for Nuclear Research
2007-2023
University of Bergen
2023
University of Koblenz and Landau
2023
University of Kaiserslautern
2023
European Council
2023
Universitatea Națională de Știință și Tehnologie Politehnica București
2001-2013
The deep-depletion breakdown voltage of silicon-dioxide/ silicon MOS capacitors is determined by the ionization-integral method, with potential distributions computed two-dimensional relaxation techniques. Calculations cover range substrate doping between 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">14</sup> and xmlns:xlink="http://www.w3.org/1999/xlink">18</sup> cm xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> oxide thickness 0.01...
Abstract We present the performance of a full-length prototype ALICE Forward Calorimeter (FoCal). The detector is composed silicon-tungsten electromagnetic sampling calorimeter with longitudinal and transverse segmentation (FoCal-E) about 20 X 0 hadronic copper-scintillating-fiber (FoCal-H) 5 λ int . data were taken in various test beam campaigns between 2021 2023 at CERN PS SPS lines hadron beams up to energies 350 GeV, electron 300 GeV. Regarding FoCal-E, we report comprehensive analysis...
We demonstrate the room-temperature operation of a silicon nanoelectromechanical resonant-body field effect transistor (RB-FET) embedded into phase-locked loop (PLL). The very-high frequency resonator uses on-chip electrostatic actuation and transistor-based displacement detection. heterodyne down-conversion based on resistive FET mixing provides feedback signal with high signal-to-noise ratio. identify key parameters for PLL operation, analyze performance RB-FET at system level. Used as...
Nanoelectromechanical systems (NEMS) offer the potential to revolutionize fundamental methods employed for signal processing in today's telecommunication systems, owing their spectral purity and prospect of integration with existing technology. In this work we present a novel, front-end receiver topology based on single device silicon nanoelectromechanical mixer-filter. The operation is demonstrated by using amplification field effect transistor (FET) merged into tuning fork resonator....
Cryogenic electric machines (CEMs) offer significant potential for highly power-dense and ultra-efficient net-zero aircraft. Aluminum (Al) displays superior conductivity to copper (Cu) at cryo-temperatures, making Al Litz wires an attractive option CEM windings minimize DC eddy losses. However, accurately quantifying wire losses remains challenging, particularly considering their unknown electromagnetic behavior different cryo-temperatures frequencies when embedded in iron cores. To address...
This paper presents an advanced numerical analysis of novel hybrid silicon/SiC multiple cascode configuration. The approach is exemplified through a three device Configuration, whereby 5-20V silicon MOSFET blocks lateral medium voltage 60-100V SiC JFET, which in turn reverse biases the gate vertical high (/spl ges/1.2kV) JFET. Furthermore, elegant solution for part also presented. A fully integrated cascoded JFETs chip proposed and numerically demonstrated. results obtained mixed mode...
Low power n-channel fully depleted local-SOI FinFET integrated sensors have been developed and validated for the amplification of pH sensing signals. A simple architecture with one connected as depletion-mode load another driving sensor, provides a maximum readout gain 6.6 V/V sensitivity 185 mV/pH, at 2 V operation. By comparing proposed amplifier single threshold voltage shift is shown to be 4.4 times larger. High-k dielectric HfO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...
A significant percent of all global deaths are caused by cardiovascular diseases (CVD). The diagnostic the electrocardiogram (ECG) is a clinical practice widely adopted to evaluate ...
The breakdown-voltage-limiting edge effects of Schottky diodes are analysed, with special emphasis on the planar Schottky-diode structure. numerical two-dimensional calculation field distribution in this structure shows that breakdown voltage can be increased by appropriate design ; cannot, however, reach its bulk value because it is limited and dependent shape oxide cut resulting from photolithographic processes. Computer-calculated normalized plots given which used diodes.
A computer programme is presented which calculates the field distribution and critical in a gate-controlled diode structure. The procedure consists of an over-relaxation potential/field calculation with boundary conditions (junction breakdown voltage at given gate voltage) resulting from experimental measurements on specially processed diodes. eliminates idealization infinite doping highly doped side junction (as encountered previous works) gives magnitude angle distributions silicon-silicon...
This paper investigates a novel flux-trapping technique in Type II High-Temperature Superconducting (HTS) rotor coils. method can be implemented superconducting electrical machines to take advantage of situ magnetisation by using the stator coils energise HTS study feasibility energizing coil winding. The methodology includes modelling and test-rig development aims improve practical system implementation for aerospace propulsion applications. Experimental results show that design is feasible...
We present the performance of a full-length prototype ALICE Forward Calorimeter (FoCal). The detector is composed silicon-tungsten electromagnetic sampling calorimeter with longitudinal and transverse segmentation (FoCal-E) about 20$X_0$ hadronic copper-scintillating-fiber (FoCal-H) 5$λ_{\rm int}$. data were taken between 2021 2023 at CERN PS SPS beam lines hadron (electron) beams up to energies 350 (300) GeV. Regarding FoCal-E, we report comprehensive analysis its response minimum ionizing...
The avalanche injection in silicon gate-controlled diodes is analysed terms of the physical theory hot electrons as developed by Bartelink, Moll and Meyer. Numerically computed universal plots are given for calculation hot-carrier ratio ηi (gate current over junction current) at maximum interface electric field breakdown, \mathscrE. \mathscrE=1.4×106 V/cm experimentally determined, which substantially higher than previously reported values. ηi≈2×10-3 measured, good agreement with calculated value.
The ATLAS muon spectrometer, currently in the installation phase, uses dedicated detectors to be able trigger on high transverse momentum muons range 6-20 GeV/c resistive plate chambers (RPC) are equipping barrel region middle and outer station, while precision (monitored drift tubes, MDT) present also inner layer. RPCs have required timing spatial resolution of about 2 ns times 1 cm, associate correct bunch crossing provide second coordinate measurements MDTs. In order successfully...
Abstract The electrical submersible pump (ESP) is a key artificial lift enabler within the oil industry. Since their launch in late 1920s, induction motors have been main motor technology used ESPs. Recent advancements opened opportunities for development of higher performance and more efficient topologies machines. This paper aims to provide review different technologies well water fluid lifting analysis this constructed around comparison between several machine when exposed harsh downhole...
This paper presents a complex set of electrical measurements used for the characterization solar cells spatial application. The goal this is to predict active p layer boron optimum concentration and find type defects that are responsible decreasing minority carrier lifetime both in nonirradiated irradiated cells.