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In this paper, we present an improved version of microcavity light-emitting diodes, relying on the use of a low-index material, aluminum oxide. Our work addresses in particular the injection scheme required by the insulating nature of this oxide. The devic ...
Abstract: A short overview of recent work on electroceramic materials relevant to methane-fueled SOFC systems is given. Various fuel feed options are considered, such as pure methane, biogas, and the addition of reforming agents. The principle and implemen ...
The inexpensive fabrication of high-quality probes for nearfield optical applications is still unsolved although several methods for integrated fabrication have been proposed in the past. A further drawback is the intensity loss of the transmitted light in ...
Scanning capacitance microscopy and electrostatic force microscopy have been used to characterize commercial semiconductor devices at various stages of the fabrication process. These methods, combined with conventional atomic force microscopy, allow to vis ...
Nanocryst. titanium oxide films were prepd. by DC magnetron sputtering onto SnO2:F-coated glass substrates kept at temps. in the 50 < τs < 300° range. Dye sensitization in cis-dithiocyanato-bis(2,2'-bipyridyl-4,4'-dicarboxylate) ruthenium(II) yielded solar ...
AIN is a material used in a wide variety of applications such as electroacoustic devices, blue diodes, IR windows, thermal conductors, metal-insulator-semiconductor structures, integrated circuit packaging, etc. In this work thin piezoelectric AIN polycrys ...
Cette étude porte sur le comportement à la rupture à court terme de substrats en alumine, en flexion 3 points. A ce titre, on a étudié différentes nuances (pureté 96% ou 99.6%), différents processus de séparation (rayage + cassage, découpe laser), ainsi qu ...
Small addition of potassium to V/Ti-oxide catalyst (K:V=0.19), consisting of 3.7 monolayer VOx, increased activity and selectivity in partial oxidation of toluene. In order to elucidate the nature of vanadia species formed on the surface of V/Ti-oxide upon ...
Catalytic hydrogenation of NO2- in water to N2 over Pd-supported on different woven fibrous materials was studied. Low porosity C fiber, low porosity D-type glass fiber, and composite (glass covered by g-Al2O3) fiber were used. Pd dispersion was compared f ...
Les propriétés (résistance carrée et coefficient en tempéature) de la pâte résistive 10 kΩ Du Pont 2041 ont été étudiées sur 6 diélectriques: ESL 4924, ESL 4702, ESL 4916, Heraeus IP 065, Heraeus GPA 98–029 et Du Pont QM 42, déposés sur des substrats stand ...