Thomas Maeder

Cette personne a quitté l’EPFL

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Publications associées (92)

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Optimisation of a Thick-Film 10...400 N Force Sensor

Thomas Maeder, Peter Ryser, Giancarlo Corradini, Niklaus Johner

The ring-on-ring bending principle allows the fabrication of simple, low-cost thick-film piezoresistive sensors for compressive forces in the 10 to 400 N range. However some imperfections are encountered in its basic embodiment, such as relatively high for ...

Elsevier2008

Subsolidus phase equilibria in the RuO2 - Bi2O3 - SiO2 system

Thomas Maeder

Subsolidus equilibria in the RuO2–Bi2O3–SiO2 diagram were studied with the aim of investigating possible interactions between the bismuth-ruthenate- based conductive phase and the silica-rich glasses in thick-film resistors. The tie lines are between Bi2Ru ...

2008

High-Voltage Sensitivity Studies of Model Thick-Film Resistors

Thomas Maeder, Peter Ryser, Claudio Grimaldi, Niklaus Johner, Caroline Marguerite Jacq

In this work we seek to better understand the mechanisms governing pulse voltage trimming in disordered conductor-insulator composites. Therefore, we investigate the effect of the composition of thick-film resistors (TFRs) on sensitivity to high voltage pu ...

2006

Design and characterisation of low-cost thick-film piezoresistive force sensors for the 100 mN to 100 N range

Thomas Maeder, Sven Nico Stauss, Peter Ryser, Giancarlo Corradini

Two simple low-cost thick-film force sensor designs are optimised, characterised and tested in this work, combining calculations of sensor element and joint stresses, joint strength characterisation and measurement of complete sensors. All sensors are base ...

2005

Milinewton force sensor based on low temperature co-fired ceramic (LTCC) technology

Thomas Maeder, Peter Ryser, Giancarlo Corradini, Hansu Birol, Caroline Marguerite Jacq

Fabrication of a millinewton force sensor, which is based on LTCC technology as an alternative to the widely used alumina (Al2O3) is described. The new sensor, integrated with piezoresistor thick-film, has shown an increase in the sensitivity by two times ...

2005

Device for measuring tibio-femoral force amplitudes and force locations in total knee arthroplasty

Thomas Maeder, Hannes Bleuler, Denis Crottet, Caroline Marguerite Jacq

Probe (1) used during a total knee arthroplasty for measuring forces and locations of their points of application and thereby moments comprising A) two load sensitive plates (2 3) apt to be inserted in one joint-compartment of a knee joint each and each be ...

2005

Inkjet-printing polymer nanocomposite for detecting VOCs

Thomas Maeder, Jürgen Brugger, Mohammadmahdi Kiaee

Eurosensors2018

LTCC magnetic sensors at EPFL and TCV: Lessons learnt for ITER

Thomas Maeder, Pierre Lavanchy, Jonathan Bryan Lister, Xavier Llobet, Blaise Marlétaz, Philippe Marmillod, Ugo Siravo, Caroline Marguerite Jacq, Christian Moura, Duccio Testa, Frédéric Dolizy, Severino Antonioni, Matthieu Toussaint, Steve Couturier, Adrien Aymeric Thibault Corne, Aylwin Iantchenko, Lorenzo Stipani

Innovative 3D high-frequency magnetic sensors have been designed and manufactured in-house for installation on the Tokamak a Configuration Variable (TCV), and are currently routinely operational. These sensors combine the Low Temperature Co-fired Ceramic ( ...

2019

The Magnetic Diagnostic Set for ITER

Thomas Maeder, René Chavan, Jonathan Bryan Lister, Jean-Marc Moret, Albert Perez, Gilbert Tonetti, Yannick Sébastien Fournier, Duccio Testa, Francisco Sanchez, Benoît Schaller, Matthieu Toussaint

This paper presents the multiple set of requirements for the ITER magnetic diagnostic systems and the current status of the various R&D activities performed by the EU partners. ...

2010

Sensors and packages based on LTCC and thick-film technology for severe conditions

Thomas Maeder, Peter Ryser, Caroline Marguerite Jacq

Reliable operation in harsh environments such as high temperatures, high pressures, aggressive media and space, poses special requirements for sensors and packages, which usually cannot be met using polymer-based technologies. Ceramic technologies, especia ...

2009

Film Morphology Effect on VOC Sensor Performance Fabricated by Drop-On-Demand Inkjet-Printing

Thomas Maeder, Jürgen Brugger, Mohammadmahdi Kiaee

This paper presents a sensor for detecting volatile organic compounds with an inkjet-printed composite. The sensing material is composed of polystyrene (35 kg/mol molecular weight) and a high structure carbon black, Ketjenblack EC-600JD. We used a dual-sol ...

IEEE2019

Application of graphite-based sacrificial layers for fabrication of LTCC (low temperature co-fired ceramic) membranes and micro-channels

Thomas Maeder, Peter Ryser, Hansu Birol

Fabrication of sensors and micro-fluidic structures from low temperature co- fired ceramic (LTCC) sheets is a growing interest in the micro-packaging community. Such devices usually have inner cavities, whose production is quite complicated. The most elega ...

Institute of Physics2007