Recherche

Afficher tous les résultats pour

Accueil

Personne

Paul Muralt

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (147)

Key-features in processing and microstructure for achieving giant electrostriction in gadolinium doped ceria thin films

Paul Muralt, Silviu Cosmin Sandu, Mahmoud Hadad, Husnain Ashraf

Gadolinium doped ceria is a well-known oxygen ion conduction material for solid fuel cell electrolytes. With its centrosymmetric average lattice and relatively low bulk dielectric constant it does not look interesting for electromechanical applications. Ho ...

Elsevier2016

Piezoelectric Coefficients of AlScN Thin Films in Comparison

Paul Muralt, Ramin Matloub Aghdam, Mahmoud Hadad

Since the discovery of a high piezoelectric response in AlScN by Akiyama and coworkers in 2009, a number of works of other groups confirmed the large increase of piezoelectricity when partially substituting Al cations by Sc cations, as long as the alloy gr ...

Ieee2016

Fabrication of complex oxide microstructures by combinatorial chemical beam vapour deposition through stencil masks

Paul Muralt, Estelle Wagner, Giacomo Benvenuti, Silviu Cosmin Sandu, Andreea Veronica Savu, Scott Harada

Chemical Beam Vapour Deposition is a gas phase deposition technique, operated under high vacuum conditions, in which evaporated chemical precursors are thermally decomposed on heated substrates to form a film. In the particular equipment used in this work, ...

Elsevier2015

Design and packaging of a highly integrated microreactor system for high-temperature on-board hydrogen production

Thomas Maeder, Paul Muralt, John Richard Thome, Navid Borhani, Dimos Poulikakos, Bo Jiang

Highlights • A “plug-and-play” microreaction system for high-temperature reactions (>500 °C). • Efficient thermal decoupling for using standard electrical/fluidic connections. • Automatic and accurate temperature control for calorimetric measurements. • A ...

Elsevier2015

Characterization and Fatigue of the Converse Piezoelectric Effect in PZT Films for MEMS Applications

Paul Muralt, Nachiappan Chidambaram, Ramin Matloub Aghdam, Andrea Mazzalai, Davide Balma

A measurement setup for the detailed study of the transverse piezoelectric coefficient e(31,f) in the converse (actuator) mode was developed. It allows the assessment of the piezoelectric stress in thin films on silicon cantilevers and provides for a corre ...

Institute of Electrical and Electronics Engineers2015

Converse mode piezoelectric coefficient for lead zirconate titanate thin film with interdigitated electrode

Paul Muralt, Silviu Cosmin Sandu, Nachiappan Chidambaram, Ramin Matloub Aghdam, Andrea Mazzalai, Robin Nigon, Davide Balma

The use of interdigitated electrodes (IDEs) in conjunction with ferroelectric thin films shows many attractive features for piezoelectric MEMS applications. In this work, growth of {1 0 0}-textured lead zirconate titanate (PZT) thin films was achieved on i ...

Institute of Physics2015

Meso-scale ceramic hotplates - A playground for high temperature microsystems

Thomas Maeder, Paul Muralt, Bo Jiang

This paper presents a mesa-scale low-temperature co-fired ceramic (LTCC) hotplate system. Using embedded thick-film platinum heaters, the hotplate has been able to operate at about 600 degrees C in a reliable manner, while its operating temperature can be ...

Elsevier2015

Electrical characterization of a buckling thermal energy harvester

Paul Muralt, Emilie Catherine Sylviane Trioux

This paper presents the electrical characterizations of a novel concept for thermal energy harvesting at micro scale. The devices presented here are based on a two-step transduction combining thermo-mechanical and piezoelectric conversion. The piezoelectri ...

Iop Publishing Ltd2015

A low-temperature co-fired ceramic micro-reactor system for high-efficiency on-site hydrogen production

Thomas Maeder, Paul Muralt, Dimos Poulikakos, Bo Jiang

A ceramic-based, meso-scale fuel processor for on-board production of syngas fuel was demonstrated for applications in micro-scale solid-oxide fuel cells (mu-SOFCs). The processor had a total dimension of 12 mm x 40 mm x 2 mm, the gas reforming micro react ...

Elsevier2015

Nanocrystalline Low-Refractive Magnesium Fluoride Films Deposited by Reactive Magnetron Sputtering: Optical and Structural Properties

Paul Muralt, Jean-Louis Scartezzini, Silviu Cosmin Sandu, Stefan Mertin

In this work, we study MgF2 thin-film synthesis by reactive pulsed DC magnetron sputtering from a metallic magnesium target in a gas mixture of argon, oxygen, and carbon tetrafluoride (CF4). Nanocrystalline films on silicon and glass substrates with excell ...

Wiley-Blackwell2015

Fine structuration of low-temperature co-fired ceramic (LTCC) microreactors

Thomas Maeder, Lioubov Kiwi, Paul Muralt, Albert Renken, Bo Jiang, Julien Haber

The development of microreactors that operate under harsh conditions is always of great interest for many applications. Here we present a microfabrication process based on low-temperature co-fired ceramic (LTCC) technology for producing microreactors which ...

Royal Society of Chemistry2015

Characterization of piezoelectric material for micro thermal harvesters

Paul Muralt, Emilie Catherine Sylviane Trioux

This paper presents the first realizations of a novel concept for thermal energy harvesting at micro scale. The devices proposed here are based on a two-step transduction combining thermo-mechanical and piezoelectric conversion. In this contribution, we pr ...

IOP Publishing Ltd2014

High Piezoelectric Longitudinal Coefficients in Sol-gel PZT Thin Film Multilayers

Paul Muralt, Silviu Cosmin Sandu, Alex Dommann, Nachiappan Chidambaram, Andrea Mazzalai, Antonia Neels, Davide Balma

A five-layer stack of lead zirconate titanate (PZT) thin films with Pt electrodes was fabricated for potential applications in nanoactuator systems. The 1 mu m thick PZT films were deposited by a sol-gel technique, the platinum electrodes by sputtering. Th ...

Wiley-Blackwell2014

A thermally self-sustained micro-power plant with integrated micro-solid oxide fuel cells, micro-reformer and functional micro-fluidic carrier

Thomas Maeder, Claude Muller, Paul Muralt, Dimos Poulikakos, Alex Dommann, Bo Jiang

Low temperature micro-solid oxide fuel cell (micro-SOFC) systems are an attractive alternative power source for small-size portable electronic devices due to their high energy efficiency and density. Here, we report a thermally self-sustainable reformer – ...

Elsevier2014

Preface: Special Issue: Euromat 2011-European Congress and Exhibition on Advanced Materials and Processes: Symposium A53 MEMS/NEMS for Sensorial and Actorial Materials

Paul Muralt, Jürgen Brugger, Nikhil Gupta

SAGE Publications2013

Comparison of Lead Zirconate Titanate Thin Films for Microelectromechanical Energy Harvester With Interdigitated and Parallel Plate Electrodes

Paul Muralt, Nachiappan Chidambaram, Andrea Mazzalai, Davide Balma

Lead zirconate titanate (PZT) thin films on insulator-buffered silicon substrates with interdigitated electrodes (IDEs) have the potential to harvest more energy than parallel plate electrode (PPE) structures because the former exploit the longitudinal pie ...

Ieee-Inst Electrical Electronics Engineers Inc2013

When nothing is constant but change: Adaptive and sensorial materials and their impact on product design

Paul Muralt, Jürgen Brugger, Nikhil Gupta

This article is the preface to the Special Issue of the Journal of Intelligent Material Systems and Structures on occasion of the Symposium A53 MEMS/NEMS for Sensorial and Actorial Materials' held at the Euromat 2011 Conference, Montpellier, France, Septem ...

Sage Publications Ltd2013

A micro heater platform with fluid channels for testing micro-solid oxide fuel cell components

Thomas Maeder, Paul Muralt, Dimos Poulikakos, Bo Jiang

Micro-scale solid oxide fuel cell is a promising power generation technology for portable devices such as laptop, medical devices and personal electronics. One of the key goals in design of μ-SOFC systems is to use common hydrocarbon fuels such as propane/ ...

Elsevier2012

Measurement of effective piezoelectric coefficients of PZT thin films for energy harvesting application with interdigitated electrodes

Paul Muralt, Nachiappan Chidambaram, Andrea Mazzalai

Interdigitated electrode (IDE) systems with lead zirconate titanate (PZT) thin films play an increasingly important role for two reasons: first, such a configuration generates higher voltages than parallel plate capacitor-type electrode (PPE) structures, a ...

Institute of Electrical and Electronics Engineers2012

A nanoparticle bed micro-reactor with high syngas yield for moderate temperature micro-scale SOFC power plants

Thomas Maeder, Paul Muralt, Dimos Poulikakos, Bo Jiang

This work introduces and investigates the a novel compact catalytic nanoparticle bed micro-fabricated reactor suitable for utilization in small-scale intermediate-temperature micro-SOFC systems. It is shown that the presented micro-reactor is able to produ ...

Elsevier2012

Page 3 sur 8