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A 0.21-ps FOM Capacitor-Less Analog LDO with Dual-Range Load Current for Biomedical Applications

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Exploration of Negative Capacitance Devices and Technologies

Ali Saeidi

Conventional device scaling has been the main guiding principle of the MOS device engineering over these past years. However, this aggressive scaling would be eventually limited due to the inability to remove the heat generated by MOSFET devices. The power ...

EPFL2019

Electrical energy generated by silicone elastomers filled with nanospring- carbon- nanotubes

Frank Nüesch

Dielectric elastomer generators (DEGs) are flexible capacitors that convert mechanical into electrical energy. They rely on an external voltage source to charge the capacitor during each operation cycle. An alternative to this is an autonomous DEG which op ...

2019

Design of an Energy-Efficient Current-to-Frequency Converter for a Wearable Sensor Platform

Maher Kayal, Evgenia Voulgari, François Krummenacher

This paper presents the design of the ANTIGONE ASIC in AMS 0.35 mu m technology that interfaces with ion-sensitive field effect transistors (ISFETs) to detect biomarkers like pH, Na+ and K+ in human sweat. The ISFET sensors generate a low current dc signal ...

IEEE2019

Yttrium zinc tin oxide high voltage thin film transistors

Danick Briand, Herbert Shea, Alexis Pierre Henri Marette

We demonstrate that doping the semiconductor zinc tin oxide (ZTO) with yttrium leads to a high-voltage thin film transistor (HVTFT) with enhanced switching performance. Adding 5% yttrium leads to an increase in the on-off ratio from 40 to 1000 at an operat ...

2018

High voltage metal oxide thin film transistors to drive arrays of dielectric elastomer actuators

Alexis Pierre Henri Marette

This thesis advances the field of high-voltage thin film transistors (HVTFTs) and dielectric elastomer actuators (DEAs) by demonstrating a strategy for low-voltage addressing of an array of high voltage soft actuators suspended on a flexible substrate. Fi ...

EPFL2018

Design techniques for a stable operation of cryogenic field-programmable gate arrays

Edoardo Charbon, Harald Arjan Robert Homulle

In this paper, we show how a deep-submicron field-programmable gate array (FPGA) can be operated more stably at extremely low temperatures through special firmware design techniques. Stability at low temperatures is limited through long power supply wires ...

2018

Galvanically Isolated Modular Converter

Alexandre François Christe

The ever increasing penetration of renewable energy systems in the distribution grids will inevitably require profound changes in the grid infrastructure. One emerging direction, the medium voltage dc (MVdc) grids, is the cornerstone of this work. They are ...

EPFL2018

A Reliability and Efficiency Optimization System for Hard-Switching DC/DC Converters

Maher Kayal, Adil Koukab, Giacomo Ripamonti, Stefano Michelis, Federico Faccio

The Large Hadron Collider experiments at CERN will use power distribution schemes relying on integrated buck DC/DC converters. Due to the radiation-hardness requirements, the devices used for the development of such converters will have a voltage rating wh ...

IEEE2018

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In this article, we inspected the bipolar resistive switching behavior of W-based ReRAMs, using HfO2 as switching layer. We have shown that the switching properties can be significantly enhanced by incorporating an Al2O3 layer as a barrier layer. It stabil ...

IEEE2018

The decoupling of the capacitor voltage and inductor current has been shown to improve significantly the dynamic performance of voltage source inverters in standalone applications. However, the computation and pulse width modulation delays still limit the ...

Ieee-Inst Electrical Electronics Engineers Inc2017