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Thomas Maeder

Cette personne n’est plus à l’EPFL

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Publications associées (96)

Influence of processing and conduction materials on properties of co-fired resistors in LTCC structures

Thomas Maeder, Peter Ryser, Hansu Birol

The motivation of this study is the need for fundamental understanding of the effects of processing conditions on the electrical properties of low- temperature co-fired ceramic (LTCC) tapes, those screen printed with commercial thick-film pastes of electro ...

2006

Laser soldered packaging hermeticity measurement using metallic conductor resistance

Thomas Maeder, Jacques Jacot, Frank Seigneur

Packaging is the last step of the manufacturing process of Microsystems. The LPM is working on the development of a two-part soldered packaging. One part of the package is metallic; the other part is made of glass. The goal of the project is to solder the ...

2006

Structuration and Fabrication of Sensors Based on LTCC (Low Temperature Co-fired Ceramic) Technology

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

The purpose of this paper is to demonstrate sensors and structures fabricated using the LTCC technology, which has been addressed and employed increasingly as a smart packaging approach for several applications. The focus will be on inclination and cantile ...

Trans Tech Publications2006

Design and processing of low-range piezoresistive LTCC force sensors

Thomas Maeder, Peter Ryser, Giancarlo Corradini, Hansu Birol

Low-temperature cofired ceramic (LTCC) combines many advantageous features for low-range (force & pressure) piezoresistive sensors: ease of 3D structuration, availability of very thin sheets, low elastic modulus and yet reasonable mechanical strength. This ...

2005

Fabrication of low-temperature co-fired ceramics micro-fluidic devices using sacrificial carbon layers

Thomas Maeder, Peter Ryser, Sigfrid Straessler, Hansu Birol, Caroline Jacq

Ease of fabrication and design flexibility are two attractive features of low temperature co-fired ceramics (LTCC) technology for fabrication of complex micro-fluidic devices. Such structures are designed and processed using different shaping methods, the ...

2005

Low temperature co-fired ceramic (LTCC) technology: general processing aspects and fabrication of 3-D structures for micro-fluidic devices

Thomas Maeder, Peter Ryser, Hansu Birol

LTCC technology is based on sintering of multi-layered thick-film sheets (50-250 µm) or so-called green tapes, which are screen-printed with thick-film pastes such as conductors, resistors, etc. The terms low temperature and co-fired originate from the rel ...

2005

Development of a force amplitude- and location-sensing device designed to improve the ligament balancing procedure in TKA

Thomas Maeder, Hannes Bleuler, Denis Crottet

A force-sensing device to intraoperatively measure knee joint forces and moments to improve the ligament balancing procedure during total knee arthroplasty has been developed. It consists of two sensitive plates, one for each condyle, a tibial base plate a ...

2005

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

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

Integrated LTCC micro-fluidic modules - an SMT flow sensor

Thomas Maeder, Peter Ryser, Yannick Sébastien Fournier, Raphael Willigens

This paper presents a thermal flow sensor based on the calorimetric principle realized by using low temperature co-fired ceramic (LTCC) technology, where the tapes and flow channel have been structured by laser machining. A standard configuration of a calo ...

2005

Tunneling-percolation origin of nonuniversality: Theory and experiments

Thomas Maeder, Peter Ryser, Claudio Grimaldi, Sonia Vionnet Menot

A vast class of disordered conducting-insulating compounds close to the percolation threshold is characterized by nonuniversal values of transport critical exponent t, in disagreement with the standard theory of percolation which predicts t ...

2005

Investigation of Interactions Between Co-fired LTCC Components

Thomas Maeder, Peter Ryser, Hansu Birol, Caroline Jacq

In spite of many advantages it offers for micro-electronic packaging, the low temperature co-fired ceramic (LTCC) technology has yet certain issues to be solved. Physical and chemical reactions, for instance, within and between the passive electronic compo ...

2005

Study of electrical properties of piezoresistive pastes and determination of the electrical transport

Thomas Maeder, Peter Ryser, Claudio Grimaldi, Sonia Vionnet Menot

A vast class of disordered conducting-insulating compounds close to the percolation threshold is characterized by nonuniversal values of transport critical exponents. The lack of universality implies that critical indexes may depend on material properties ...

2005

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, Vincent Fahrny

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

Low-temperature thick-film dielectrics and resistors for metal substrates

Thomas Maeder, Peter Ryser, Sonia Vionnet Menot, Caroline Jacq

In this work, a set of low-temperature thick-film dielectrics consisting of two high-lead low-temperature glasses, stabilised by various amounts of alumina filler, is characterised on alumina and aluminium metal, as a function of firing temperature. Corres ...

2005

Pb(Zr,Ti)O3 thin films by in-situ reactive sputtering on micromachined membranes for micromechanical applications

Thomas Maeder, Paul Muralt, Nava Setter

For micromechanical applications, piezoelectric PbZrTO3 (PZT) thin films have been deposited on metallised Si3N4/SiO2 layers on Si wafers. Films with compositions near the morphotropic phase boundary (x=0.53) were prepared at 600°C using a multitarget, in- ...

The Institute of Materials / Maney Publishing1995

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