FR – Page 11 – TechConnect Briefs

Sensitive detection of nonlinear nanomechanical motion using capacitive signal down-mixing for resonant NEMS-based sensors

Kacem N., Sworowski M., Hentz S., Baguet S., Dufour R., FEMTO-ST, FR

Nanoelectromechanical systems (NEMS) are emerging as strong candidates for a host of important applications in semiconductor-based technology and fundamental science. At this level of miniaturization, the electric characterization of capacitive NEMS is a challenge. In [...]

MEMS Based AC Voltage References Toward Metrological Applications

Camon H., Bounouh A., Blard F., Bélières D., LAAS/CNRS, FR

In electrical references, if primary references define the international standards, secondary references are the key points for precision measurement or electrical conversion. The principle of secondary AC voltage references based on MEMS using the pull-in [...]

Electrical Nerve Agents Sensors Based on Chemically Functionalized Nanomaterials

Simonato J-P, CEA, FR

The threat of a chemical attack continues to grow and recent examples such as the terrorist attack of the Metro of Tokyo have shown that organophosphorus agents (OPs) are powerful neurotoxic weapons. There is still [...]

Thermal-managed sputtered micro machined gas chromatography columns for oilfield applications

Haudebourg R., Vial J., Thiébaut D., Sassiat P., Azzouz I., Danaie K., Bourlon B., Schlumberger, FR

Since the late 70s, new approaches have been proposed to replace conventional gas chromatograph apparatus by silicon based micro fabricated separation systems. The main challenge in miniaturized gas chromatography consists in the reproducible and collective [...]

Highly Flexible Transparent Thin Film Heaters based on Metallic Nanowires

Simonato J-P, CEA, FR

We demonstrate that flexible transparent film heaters (TFHs) with excellent performances can be fabricated from solution-processible metallic nanowire thin films. The TFHs were first deposited on glass and heating performances were monitored at different applied [...]

Role of the carbon nanocoating on the electronic conductivity of LiFePO4 based electrodes for lithium ion batteries

Badot J.C., Seid K.A., Dubrunfaut O., Levasseur S., Lestriez B., Guyomard D., CNRS, FR

Recently, we used the broadband dielectric spectroscopy (BDS), from low (a few Hz) to microwave (a few GHz) frequencies. This technique is very sensitive to the different scales of the electrode architecture involved in the [...]

Plasmonic nanoparticles ordered in self-assembled materials

Tallet C., Vieaud J., Merchiers O., Sivasankaran P.C., Nallet F., Aradian A., Ponsinet V., Centre de Recherche Paul Pascal, FR

Bottom-up approaches, and among them nanochemistry and self-assembly, have recently appeared as promising tools for the fabrication of plasmonic nanostructured materials. We study nanocomposites of polymers and gold nanoparticles presenting plasmonic resonance at a visible [...]

Luminescent Terbium/Europium chelates-based Silica Nanoparticles : Stability and Incorporation Efficiency measured by Radioactive Probe

Wartenberg N., Raccurt O., Mazzanti M., Imbert D., Bourgeat-Lami E., Commissariat à l’Energie Atomique, FR

We describe an original method based on europium-chelated radioactive measurements to investigate and compare the incorporation (by a reverse microemulsion-mediated sol-gel process without covalent bond) and the stability of two different organolanthanides into silica nanoparticles. [...]

Unusual thermal diffusion of carbon nanotubes in a thermoplastic polymer

Tishkova V., Pavlenko E., Puechmont P., Flahaut E., Bacsa W.S., CEMES, Univ. Toulouse, FR

The dispersion of carbon nanotubes in polymer composites is a major challenge. Although nanotubes have a high aspect ratio, their tendency to agglomerate limit percolation at low loading. We find that thermal diffusion is reducing [...]

CNTFETs fabricated using an Original Dynamic Air-Brush technique for SWCNTs deposition : application to gas sensing

Bondavalli P., Gorintin L., Feugnet G., Thales Research and Technology, FR

This contribution deals with Carbon Nanotubes Field Effect transistors (CNTFETs) based gas sensors fabricated using a completely new dynamic air-brush technique for SWCNTs deposition. More precisely, we have developed a machine which allows us the [...]