Publications associées à Mechanical equivalent of heat

Synthesis of Novel Integrated Actuators Powered by Shape Memory Alloys

In the modern age of miniaturisation, Smart Materials, a type of material that reacts mechanically to a certain stimulus, have become an integral part of this revolution. Among these materials, Shape Memory Alloys (SMAs), which have the highest volumetric ...

EPFL2022

Designing compliant mechanisms composed of shape memory alloy and actuated by induction heating

Yves Perriard, Paolo Germano, Thomas Guillaume Martinez, Adrien Jean-Michel Thabuis, Sean Thomas

Shape Memory Alloys (SMAs) are a type of smart materials that reacts mechanically to heat. Due to their complex behavior, they are often used in a simple geometry such as wires. This constrains the output displacement of the alloy to a simple linear contra ...

2021

Autonomous oil flow generated by self-oscillating polymer gels

Vito Cacucciolo

The previously reported gel and polymer actuators require external inputs, such as batteries, circuits, electronic circuits, etc., compared with autonomous motions produced by the living organisms. To realize the spontaneous motions, here, we propose to in ...

Nature Research2020

Influence of thermo-mechanical history on the ordering kinetics in 18 carat Au alloys

Nadine Baluc, Helena Van Swygenhoven, Steven Van Petegem, Marina Garcia Gonzalez

Precious alloys are subjected to a series of mechanical and thermal operations during manufacturing. For 18 carat gold alloys the processing operations can induce L1(0) ordered nanodomains, known to lead to the buildup of residual stresses, which are the p ...

PERGAMON-ELSEVIER SCIENCE LTD2020

Efficient conversion of chemical energy into mechanical work by Hsp70 chaperones

Paolo De Los Rios, Alessandro Barducci, Alberto Stefano Sassi, Salvatore Assenza

Hsp70 molecular chaperones are abundant ATP-dependent nanomachines that actively reshape non-native, misfolded proteins and assist a wide variety of essential cellular processes. Here, we combine complementary theoretical approaches to elucidate the struct ...

2019

J1-J2 square lattice antiferromagnetism in the orbitally quenched insulator MoOPO4

Helmuth Berger, László Forró, Henrik Moodysson Rønnow, Lin Yang, Arnaud Magrez, Peter Babkevich, Oleg Yazyev, Noore Elahi Shaik, Ivica Zivkovic, Bálint Náfrádi

We report magnetic and thermodynamic properties of a 4d1 (Mo5+) magnetic insulator MoOPO4 single crystal, which realizes a J1−J2 Heisenberg spin-1/2 model on a stacked square lattice. The specific-heat measurements show a magnetic transition at 16 K which ...

Amer Physical Soc2017

Quo vadis thermodynamics and the city: a critical review of applications of thermodynamic methods to urban systems

Jean-Louis Scartezzini, Darren Robinson, Nataliya Filchakova

Cities are complex dynamic entities. From a thermodynamic perspective, they represent open systems, constantly importing and exporting energy and matter across their boundaries; the output invariably being less ordered due to irreversible internal processe ...

2007

Scale-down approach : chemical process optimisation using reaction calorimetry for the experimental simulation of industrial reactors dynamics

This thesis deals with the combined utilisation of a reaction calorimeter, the RC1® commercialised by Mettler Toledo and equipped with a 2 L glass reactor, and the heat transfer dynamics modelling of industrial reactors. By doing so, the temperature evolut ...

EPFL2006

Stress controlled gas-barrier oxide coatings on semi-crystalline polymers

Yves Leterrier, Gil Rochat

Thin silicon oxide (SiOx) barrier coatings formed by plasma enhanced chemical vapor deposition on poly(ethylene terephthalate) (PET) substrates were subjected to post-deposition annealing treatments in the temperature range for orientation relaxation of th ...

2005