Concept

Nitride

Related publications (170)

Direct access to macroporous chromium nitride and chromium titanium nitride with inverse opal structure

We report a facile synthesis of single-phase, nanocrystalline macroporous chromium nitride and chromium titanium nitride with an inverse opal morphology. The material is characterized using XRD, SEM, HR-TEM/STEM, TGA and XPS. Interconversion of macroporous ...

Royal Society of Chemistry2015

High-Temperature Ammonolysis of Thin Film Ta2O5 Photoanodes: Evolution of Structural, Optical, and Photoelectrochemical Properties

Ali Dabirian

Tantalum nitride (Ta3N5) and oxynitride (TaON) are promising materials for photoelectrochemical (PEC) water splitting due to near-ideal band gaps and band edge positions. However, the high-temperature ammonolysis process that is usually used to make these ...

Amer Chemical Soc2015

Micromachined Calibration Chip with Heat Source and Temperature Sensors for Scanning Thermal Metrology (SThM)

Danick Briand, Herbert Shea, Etienne Pierre Lemaire, Thi-Vong Nguyen

The monitoring of heat flux is becoming more and more critical for many technologies approaching nanometric dimensions. Scanning Thermal Microscopy (SThM) is one of the tools available for thermal measurement at the nanoscale. This measurement technics nee ...

Elsevier2015

Advanced power electronic devices based on Gallium Nitride (GaN)

Elison de Nazareth Matioli, Bin Lu, Feng Gao

It is the most exciting time for power electronics in decades. The combination of new applications, such as microinverters, electric vehicles and solid state lighting, with the new opportunities brought by wide bandgap semiconductors is expected to signifi ...

IEEE2015

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

22.5% efficient silicon heterojunction solar cell with molybdenum oxide hole collector

Christophe Ballif, Aïcha Hessler-Wyser, Matthieu Despeisse, Stefaan De Wolf, Sylvain Nicolay, Björn Niesen, Loris Barraud, Jérémie Werner, Andrea Tomasi

Substituting the doped amorphous silicon films at the front of silicon heterojunction solar cells with wide-bandgap transition metal oxides can mitigate parasitic light absorption losses. This was recently proven by replacing p-type amorphous silicon with ...

American Institute of Physics2015

Interface Losses In Multimaterial Resonators

Luis Guillermo Villanueva Torrijo, Tom Larsen

We present an extensive study shedding light on the role of surface and bulk losses in micromechanical resonators. We fabricate thin silicon nitride membranes of different sizes and we coat them with different thicknesses of metal. We later characterize th ...

Ieee2014

Dynamic indentation induced damage in silicon nitride

Jean-François Molinari, Seyedeh Mohadeseh Taheri Mousavi

This poster shows simulation results of trasngranular fracture percentage in the ceramic microstructure under tensile loading. Moreover, the crack face roughness was investigated for microstructures with different grain sizes. ...

2014

Process optimisation of a MEMS based PZT actuated microswitch

Davide Balma

In this work the fabrication of a piezoelectrically actuated microswitch for high current applications is proposed. The device was obtained by assembling two silicon substrates: one containing the signal lines and the other enclosing a silicon nitride (Si3 ...

Elsevier Science Bv2014

On the influence of transgranular and intergranular failure mechanisms during dynamic loading of silicon nitride

Jean-François Molinari

Plane-strain tensile loading numerical simulations of dynamic crack propagation in silicon nitride microstructures are conducted. The strength and toughness are evaluated as a function of strain rate and microstructural parameters, including grain size and ...

Elsevier2014

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