Stmicroelectronics (crolles 2) Sas

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Stmicroelectronics S.a.

Stmicroelectronics (rousset) Sas

Christophe Maitre

Thomas Skotnicki

Stephane Monfray

Stéphane Monfray

Olga Kokshagina

Onoriu Puscasu

Philippe Coronel

Sandrine Lhostis

Ulrich Soupremanien

A power conversion device includes an enclosure containing one or more drops of a liquid. A capacitive electret transducer is coupled to the enclosure. In response to applied heat at a heating surface, the liquid vaporizes and then condenses on a flexible membrane of the capacitive electret transducer. The flexible membrane is displaced in response to the vaporization-condensation and the capacitive electret transducer generates an output current.

Device for converting thermal energy into electrical energy

A detector of an event includes an electrical energy generator formed by a flexible piezoelectric element with a weight fastened to the flexible piezoelectric element that is biased with the weight in a position with the piezoelectric element flexed. In response to detection of the event, a trigger releases the weight so as to cause a vibration of the piezoelectric element. This vibration is converted by the flexible piezoelectric element into electrical energy. An electronic system is power by the electrical energy and is operable to generate an electrical signal indicative of the detected event.

Event detector

An integrated circuit chip cooling device includes a network of micropipes. A first pipe portion and a second pipe portion of the network are connected by at least one valve. The valve is formed of a bilayer strip. In response to change in temperature, the shape of the bilayer strip changes to move the valve from a substantially closed position to an open position. In one configuration, the change is irreversible. In another configuration, the change is reversible in response to an opposite change in temperature.

Integrated circuit chip cooling device

An energy harvester including first and second sheets; and a plurality of walls, each wall being sandwiched between the first and second sheets and surrounding a cavity, wherein each cavity houses at least one curved plate adapted to change from a first shape to a second shape when its temperature reaches a first threshold and to return to the first shape when its temperature falls to a second threshold lower than said first threshold.

Energy harvesting device

A method of forming at least one curved plate having first and second layers, the first layer being formed of a first material and the second layer being formed of a second material, the method including forming one or more blocks of a fusible material on a surface of a substrate; baking the one or more blocks to deform their shape; and depositing the first and second materials over the one or more deformed blocks to form the first and second layers.

Growing community of inventors

Barraux, France

Christophe Maitre