Publications by Peter Ryser | EPFL Graph Search

Related publications (68)

Size-Selective Diffusion in Nanoporous but Flexible Membranes for Glucose Sensors

A series of nanoporous membranes prepared from polyethylene-block-polystyrene were applied for size-selective diffusion of glucose and albumin molecules. Millimeter-sized test cells for characterization of such molecular diffusions were designed assuming a ...

American Chemical Society2009

Percolative properties of hard oblate ellipsoids of revolution with a soft shell

Peter Ryser, Claudio Grimaldi, Niklaus Johner, Gianluca Ambrosetti

We present an in-depth analysis of the geometrical percolation behavior in the continuum of random assemblies of hard oblate ellipsoids of revolution. Simulations were carried out by considering a broad range of aspect-ratios, from spheres up to aspect-rat ...

2008

Fabrication of Polymer-Based Micro Devices: Formulation and Study of the Paste

Thomas Maeder, Peter Ryser, Nathalie Sophie Adeline Serra

We investigate in the present work the fabrication of polymer-based micro-fluidic and micro-mechanical devices using sacrificial, resistive/conductive pastes, through a screen-printing process. An organic sacrificial paste is first screen-printed onto a su ...

Elsevier2011

Transport exponent in a three-dimensional continuum tunneling-percolation model

Peter Ryser, Claudio Grimaldi, Niklaus Johner

The tunneling-percolation mechanism of conduction in disordered conductor-insulator composites is studied for a realistic continuum model where conducting and impenetrable spherical particles are dispersed in a three-dimensional continuum insulating materi ...

2008

A viscosity-dependent affinity sensor for continuous monitoring of glucose in biological fluids

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

We present a viscometric affinity biosensor for continuous monitoring of glucose in biological fluids such as blood and plasma. The sensing principle of this chemico-mechanical sensor is based upon the viscosity variation of a sensitive fluid with glucose ...

Elsevier2011

3D structuration of LTCC and related technologies for thermal management and microfluidic structures

Thomas Maeder, Peter Ryser, Caroline Marguerite Jacq, Bo Jiang, Conor Joseph Slater, Fabrizio Vecchio

Ceramic technologies such as LTCC (Low Temperature Co-fired Ceramic) and thick-film are used widely in electronic circuits exposed to harsh environments, for applications in fields such as aerospace, automotive and energy exploration, where, owing to their ...

Soc Microelectronics, Electron Components Materials-Midem2012

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

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

Solution of the tunneling-percolation problem in the nanocomposite regime

Thomas Maeder, Peter Ryser, Claudio Grimaldi, Gianluca Ambrosetti

We noted that the tunneling-percolation framework is quite well understood at the extreme cases of percolation-like and hopping-like behaviors but that the intermediate regime has not been previously discussed, in spite of its relevance to the intensively ...

2010

Investigation of Interactions Between Co-fired LTCC Components

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

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

Piezoresistive effect in epoxy–graphite composites

Thomas Maeder, Peter Ryser

In this work, we investigate the piezoresistive response of epoxy–graphite composites. A resistive thick-film Wheatstone bridge is deposited by screen-printing onto a beam, a weight is then applied on the tip of the beam and the resulting electrical signal ...

Elsevier2012

Long-term mechanical reliability of ceramic thick-film circuits and mechanical sensors under static load

Thomas Maeder, Peter Ryser, Caroline Marguerite Jacq

In this work, we study the long-term mechanical strength under static load - i.e. static fatigue performance or resistance to subcritical crack growth - of ceramic thick-film circuits, namely how the static fatigue of the substrate is affected by the prese ...

Elsevier2012

Automated characterization of dextran/concanavalin A mixtures-A study of sensitivity and temperature dependence at low viscosity as basis for an implantable glucose sensor

Peter Ryser, Eric Meurville

Mixtures of aqueous solutions of dextran and concanavalin A have a potential use as glucose sensing substances. We investigate these mixtures at low viscosities which are especially advantageous for miniature mechanical glucose sensing devices. The glucose ...

Elsevier2010

Fabrication and Test of High-Temperature Ceramic Transformer

Thomas Maeder, Peter Ryser, Conor Joseph Slater

This work describes the fabrication and test of a high temperature (+200°C) capable high frequency transformer. It was manufactured using Low Temperature Co-fired Ceramic (LTCC) technology, which allowed the complex multilayer structure of ceramic and meta ...

2014

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

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

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 Publications2012

Contactless rotational concentric microviscometer

Peter Ryser, Eric Meurville, Sigfried Strässler

We investigated the feasibility of a concentric rotational microviscometer which is actuated remotely. This type of sensor might find application in vivo as a passive implant. The heart of the sensor is a cylindrical rotor, actuated from a distance of up t ...

Elsevier2011

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

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

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

Depletion-interaction effects on the tunneling conductivity of nanorod suspensions

Peter Ryser, Claudio Grimaldi, Biagio Nigro

We study by simulation and theory how the addition of insulating spherical particles affects the conductivity of fluids of conducting rods, modeled by spherocylinders. The electrical connections are implemented as tunneling processes, leading to a more det ...

American Physical Society2013

Load sensing surgical instruments

Thomas Maeder, Peter Ryser, Caroline Marguerite Jacq

Force and pressure sensing technology applied to smart surgical instruments as well as implants allow to give a direct feedback of loads to the surgeon lead to better reliability and success of surgical operations. A common technology used for sensors is l ...

Springer Verlag2009

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