FR – Page 9 – TechConnect Briefs

Impact of Ink Synthesis on Processing and Properties of Inkjet-Printed Silicon Thin Films

Drahi E., Gupta A., Blayac S., Lombez L., Jubault M., Benaben P., Ecole Nationale Supérieure des Mines de Saint Etienne, FR

Inkjet printing has a high potential for cost reduction in solar cell and thermoelectric industry. This study demonstrates that silicon thin films can be produced by inkjet-printing of a silicon ink followed by consequent drying [...]

Inkjet printing of 200 nm monodisperse carbon nanoparticles: from smart ink formulation to thin film sensor properties

Vié R., Berthon-Fabry S., Blayac S., Drahi E., Jacomet S., EMSE, FR

In this work, resorcinol / formaldehyde copolymers are pyrolyzed in order to obtain spherical monodisperse carbon nanoparticles. These particles are used to create thin films using inkjet deposition. Electrical properties of these films are, then, [...]

New Powerful Method Based on Electrical Harmonic Distortion Analysis for Electromechanical Characterizations of MEMS Devices

Bounouh A., Bélières D., LNE, FR

This paper presents a new, cheap and accurate experimental method based on electrical harmonic distortion analysis to determine mechanical characteristics (resonant frequency) of MEMS devices used in widespread applications as in energy scavenging, cantilever-based microsystems [...]

Determination of different metals using new microsensors diamond doped with boron (BDD) in wastewater

Sbartai A., Namour P., Errachid A., Krejči J., Šejnohová R., Renaud L., Hamlaoui M-L., Loir A-S., Garrelie F., Donnet C., Soder H., Audouard E., Granier J., Jaffrezic-Renaul N., Universite de Lyon, FR

Different methods of analysis and speciation of heavy metals can be used alone or in combination, including the techniques of anodic stripping voltametry (DPASV) and the square wave (SWV). The Principe of these methods, there [...]

Breaking the symmetry of micro- and nanoobjects by bipolar electrochemistry

Roche J., Loget G., Fattah Z., Zigah D., Bouffier L., Kuhn A., Université de Bordeaux, ISM, UMR 5255, FR

Referring to the roman god Janus, depicted with two heads, Janus particles are defined as micro- or nano- particles owning two sides of different chemistry. They can be used as key-components in applications such as [...]

Physical properties of silver nanowire networks

Giusti G., Lagrange M., Langley D.P., Collins R., Jiménez C., Anikin M., Bréchet Y., Bellet D., Laboratoire des Matériaux et du Génie Physique (LMGP), FR

Silver nanowires were formed into random networks by using spin coating and spray deposition techniques. As a first step, electro-optical properties were optimized using an optimal nanowire density. The latter also depended on the nanowire [...]

Highly Stable and Oppositely Charged Hybrid Nanoparticles/Tubes. Fine Tuning of Electro-steric interactions To Fabricate Functional Surfaces

Sekar S., Feltrin E., Giermanska J., Berret J.-F., Chapel J.-P., Centre de Recherche Paul Pascal, FR

Hybrid Functional Surfaces were generated via the novel surface functionalization pathway named Surface Grown Layers (SgL),where the hybrid layers are generated in a single step at a fluid/solid interface via fine tuning of electrostatic complexation [...]

Flexible fluorine-doped tin oxide based composite electrodes for photovoltaic applications

Giusti G., Puyoo E., Langley D.P., Consonni V., Bellet D., Laboratoire des Matériaux et du Génie Physique (LMGP), FR

Fluorine-doped tin dioxide (FTO) thin films were deposited via ultrasonic spray pyrolysis directly on preheated polyimide (PI) - DuPont™ Kapton® polyimide flexible film substrates. All the FTO films deposited on PI substrates exhibited polycrystalline cassiterite [...]

Nano-Organocatalysts: new magnetically retrievable tools for enantioselective synthesis

Nehlig E., Motte L., Guénin E., Université Paris, FR

We report the elaboration of new organocatalyst functionalized superparamagnetic iron oxide nanoparticles that can act as a new enantioselective organocatalyst. Differents organocatalysts are grafted using two different methodologies on a nanoplateform constituted of 10 nm [...]

Microwave irradiation and Click chemistry for highly efficient and chemoselective multivalent iron oxide nanoparticle surface modification

Guénin E., Nehlig E., Demay Drouard P., Benyettou F., Motte L., Université Paris, FR

Magnetic nanoparticles (mNPs) are attractive candidates for numerous applications due to their unique properties. For all these applications mNPs surfaces must be tailored to improve biocompatibility properties or reduce aggregation but also to insert molecules [...]