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Coimbra, Portugal

Maia R.,Critical Software | Serra P.,IPN Instituto Pedro Nunes | Neves P.,CEIIA Centro para a Excelencia e Inovacao na Industria Automovel
Advanced Microsystems for Automotive Applications 2012: Smart Systems for Safe, Sustainable and Networked Vehicles | Year: 2012

The MobiCarin Vehicle Infotainment System addresses the key elements that give OEM systems an advantage over portable devices: seamless integration with the vehicle, hardware control interfaces, and vehicle configuration. The Visteon-based system, currently being developed by the MobicarInfo Consortium, is tailored to the needs of electric vehicle owners, offering access to a set of resources under a single umbrella. These resources include: battery status; upto- date charging station map and station reservation; route planning; real-time information on public transport, and car-sharing. Vehicle configuration and control features include: remote access, in-vehicle and remote AC control, driving mode, power window control, speed and seatbelt notifications, information from temperature and parking sensors, and onboard diagnostics. The system is being developed by the members of the consortium, namely, Critical Software, INTELI, IPN and CEIIA. A functional prototype will be available in late 2012.

Duraes L.,University of Coimbra | Ochoa M.,University of Coimbra | Rocha N.,IPN Instituto Pedro Nunes | Patricio R.,IPN Instituto Pedro Nunes | And 3 more authors.
Journal of Nanoscience and Nanotechnology | Year: 2012

Nanostructured silica based xerogels and aerogels are prepared by sol-gel technology, using methyltrimethoxysilane as precursor. The influence of the drying method and conditions on the microstructure of the obtained materials is investigated, since the drying stage has a critical influence on their porosity. Two types of drying methods were used: atmospheric pressure drying (evaporative), to produce xerogels, and supercritical fluids drying, to obtain aerogels. Although the supercritical fluids drying technique is more expensive and hazardous than the atmospheric pressure drying, it is well known that aerogels are less dense than the xerogels due to less pore shrinkage. However, the ideal situation would be to use atmospheric pressure drying in conditions that minimize the pore collapse. Therefore, in this work, different temperature cycles for atmospheric pressure drying and two heating rates for the supercritical fluids drying are tested to study the gels' shrinkage by analyzing the density and porosity properties of the final materials. The best materials obtained are aerogels dried with the lower heating rate (∼80°C/h), since they exhibit very low bulk density (∼50 kg/m3, high porosity (95%)-mainly micro and mesopores, high surface area (∼500 m2/g), moderate flexibility and a remarkable hydrophobic character (>140°. It was proved that the temperature cycles of atmospheric pressure drying can be tuned to obtain xerogels with properties comparable to those of aerogels, having a bulk density only ∼15 kg/m3 higher. All the synthesized materials fulfill the requirements for application as insulators in Space environments. Copyright © 2012 American Scientific Publishers.

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