F. Courtade

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This paper deals with digital archiving of cemetery heritage. A built cemetery is a tangible evidence of historical and cultural periods through the style and the shape of tombs. It gives quantitative information on the local population, about its history (by reading birth and death dates), its culture (by analysing name typology) and its temporal evolution(More)
At the present time the insertion of RF MEMS switches into real architecture requires reduced actuation voltage, reduced dimensions and a better control of the electrical and electromechanical behavior that gives more importance to surface effects, their understanding and modeling. The use of such devices needs the development of methods for estimating the(More)
This paper addresses the topics of energy harvesting for powering autonomous wireless sensors on board of geostationary broadcasting satellites. The feasibility of energy harvesting by using thermoelectric modules or rectennas is firstly discussed then the design and the implementation of a rectenna is presented. Experimental results in Ka band demonstrate(More)
Combining conductive micro and nanofillers is a newway to improve electrical conductivity. Micrometric silver flakes and nanometric carbon nanotubes (CNTs) exhibit high electrical conductivity. A new type of hybrid conductive adhesives filled with silver flakes and carbon nanotubes (DWCNTs or MWCNTs) were investigated. High electrical conductivity is(More)
Research on contact characterization for microelectromechanical system (MEMS) switches has been driven by the necessity to reach a high-reliability level for micro-switch applications. One of the main failures observed during cycling of the devices is the increase of the electrical contact resistance. The key issue is the electromechanical behaviour of the(More)
This paper describes the influence of different base plate materials on the electrical behavior of a RF GaN power device. Three different materials are tested and measured, first with a smaller device, then with a 36mm gate periphery AlGaN/GaN HEMT on SiC device, with an output power of 130W at L-band. The influence of the thermal conductance of each base(More)
Although molecular metals have been known for decades, their insolubility, low vapor pressure, and synthesis routes have prevented them from being integrated into electronic devices. We have prepared stable colloidal solutions of the organic metal TTF-TCNQ that overcome such difficulties. The solutions contain well-dispersed nanoparticles stabilized by long(More)
Accelerated life tests on microelectronic devices are needed to estimate their degradation under severe environment. THB (Temperature Humidity Bias) [1] at 85°C and 85%RH (relative humidity) is commonly used for reliability studies. Empirical acceleration laws, used for THB test take into account the temperature change (from 22°C to(More)
The testing and development of contact material or topology can be addressed with a dedicated experimental set up for monitoring test structures. However, it is difficult to perform the tests under realistic conditions. Moreover several works have already been published about the different theories describing rough mechanical contact. But they often ignore(More)
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