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Peter Ryser

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Publications associées (68)

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

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

Processing of Graphite-Based Sacrificial Layer for Microfabrication of Low Temperature Co-fired Ceramics (LTCC)

Thomas Maeder, Peter Ryser, Hansu Birol

The processing and application of graphite powder-based sacrificial layer for fabrication of microfluidic structures in LTCC is described. Such layers are produced as pastes, which are screen-printed in LTCC sheets to avoid sagging, by supporting closed, t ...

2006

Apparent nonuniversality in finite segregated tunneling-percolaiton models

Peter Ryser, Claudio Grimaldi, Niklaus Johner

We investigate the tunneling-percolation mechanism of DC transport nonuniversality for conducting particles of diameter Φ placed in series within the bonds of length Lof a regular lattice model. When L/Φ→∞ the resulting bond conductance distribution functi ...

2007

Formulation and processing of screen-printing vehicles for sacrificial layers on thick-film and LTCC substrates

Thomas Maeder, Peter Ryser, Yannick Sébastien Fournier, Caroline Marguerite Jacq

Ceramic technologies such as thick-film and LTCC (Low Temperature Cofired Ceramic) are excellent platforms for the fabrication of mesoscale devices such as sensors, actuators, microreactors and MEMS packaging. This work presents two alternative screen-prin ...

2008

Novel chemico-mechanical approach towards long-term implantable glucose sensing

Jean-Michel Sallese, Peter Ryser, Eric Meurville, Christophe Boss

The proof of concept of a continuously sensing affinity device based on the glucose-dependent viscosity of a sensitive solution containing dextran and Concanavalin A has been successfully demonstrated. The biosensor incorporates a piezoelectric diaphragm a ...

Elsevier2009

Individual particle handling in a microfluidic system based on parallel laser trapping

René Salathé, Horst Arthur Vogel, Peter Ryser, Michael Werner, Bastien Rachet

We present an optical trapping system combining individually addressable multiple laser traps with fluorescence spectroscopy. An in-line set of 64 near-IR laser diodes is used to create a line of individually addressable traps inside a microfluidic chip. T ...

Optical Society of America2011

Enclosed Electronic System for Force Measurements in Knee Implants

Kamiar Aminian, Philippe Renaud, Arnaud Bertsch, Peter Ryser, Eric Meurville, David Forchelet, Arash Arami, Matteo Simoncini

Total knee arthroplasty is a widely performed surgical technique. Soft tissue force balancing during the operation relies strongly on the experience of the surgeon in equilibrating tension in the collateral ligaments. Little information on the forces in th ...

Mdpi Ag2014

Instrumented Prosthesis for Knee Implants Monitoring

Steve Tanner, Kamiar Aminian, Philippe Renaud, Catherine Dehollain, Arnaud Bertsch, Peter Ryser, Eric Meurville, Hooman Dejnabadi, Pierre-André Farine, Oguz Atasoy, Brigitte Jolles-Haeberli, Arash Arami, Willyan Hasenkamp Carreira, Shafqat Ali, Matteo Simoncini

In this work we present an instrumented smart knee prosthesis for in-vivo measurement of forces and kinematics. Studying the constraints, we designed minimal sensory systems to be placed in the polyethylene part of the prosthesis. The magnetic sensors and ...

IEEE2011

Integrated LTCC micro-fluidic modules - an SMT flow sensor

Thomas Maeder, Peter Ryser, Yannick Sébastien Fournier

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

Gas viscosity sensor

Peter Ryser, Sigfried Strässler

A gas viscosity sensor comprises a signal processing circuit and a sensor element, including a gas pressure generating system and a differential pressure measuring system in fluid communication therewith, the differential pressure measuring system comprisi ...

2006

Fabrication of a Millinewton Force Sensor Using Low Temperature Co-fired Ceramic (LTCC) Technology

Thomas Maeder, Peter Ryser, Hansu Birol

This study is aimed at outlining the fabrication of a novel piezoresistive force sensor using LTCC technology, which operates at millinewton range, yet is compatible with low cost thick-film fabrication process. Mechanical and electrical characterization o ...

Elsevier2007

Low-firing thick-film piezoresistive sensors for medical instruments

Thomas Maeder, Peter Ryser, Caroline Marguerite Jacq

In this work, a low-firing thick-film materials system allowing fabrication of piezoresistive sensors on surgical alloys is presented in detail, with application to a force-sensing surgical instrument. The system comprises a series of individual thick-film ...

Elsevier2011

MULTI-ANALYTE DETECTION FOR BIOLOGICAL FLUIDS Towards Continous Monitoring of Glucose, Ionized Calcium and pH using a Viscometric Affinity Biosensor

Peter Ryser, Eric Meurville, Christophe Boss, Frédéric Schmitt

We present a viscometric affinity biosensor that can potentially allow continuous multi-analyte monitoring in biological fluids like blood or plasma. The sensing principle is based on the detection of viscosity changes of a polymeric solution which has a s ...

SciTePress2011

Study of the impact of high-voltage trimming on several characteristics of model TFRs and their stability

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

In this work we study in more details the impact of voltage trimming on different characteristics of model thick-film resistors (TFRs). Two series of RuO2-based TFRs with different conducting grain sizes are studied. As the composition of model pastes is c ...

2007

Effects of Thermal Losses on the Heating of a Multifunctional LTCC Module for Atomic Clock Packaging

Thomas Maeder, Peter Ryser, Fabrizio Vecchio, Conor Joseph Slater

An innovative multifunctional LTCC module has been designed for miniature atomic clock packaging. The components of miniature atomic clocks need to be efficiently packaged and connected to each other, and a precise temperature control is required for them. ...

Trans Tech Publications Ltd2012

Modification of Thick-film Conductors Used in IP Technology for Reduction of Warpage during Co-firing of LTCC (Low Temperature Co-fired Ceramic) Modules

Thomas Maeder, Peter Ryser, Hansu Birol

LTCC technology offers low temperature firing (

Trans Tech Publications2006

Low-cost thick-film force sensors for the 100 N force range

Thomas Maeder, Peter Ryser, Giancarlo Corradini

This work presents calculations and measurements on a novel low-cost thick-film force sensor design for the 100 N force range. The mechanical concept of these force sensors is based on a double ring biaxial load, which allows the fabrication of simple sens ...

2006

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

Thomas Maeder, Peter Ryser, Sigfried Strässler, Hansu Birol, Caroline Marguerite 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

Liquid drug delivery micropump

Peter Ryser, Sigfried Strässler

A pump system for the subcutaneous delivery of a liquid medicament, having a pump module (10) comprising a stator housing (28) with a chamber (30), a rotor (32) rotatably and axially slidably received in the chamber and comprising a first axial extension ( ...

2005

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