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  • 1.
    D'Humières, Benoit
    et al.
    TEMATYS, France.
    Esmiller, Bruno
    Airbus Safran Launchers SAS, France.
    Gouy, Yann
    Airbus Safran Launchers SAS, France.
    Steck, Emilie
    Airbus Safran Launchers SAS, France.
    Quintana, Crisanto
    University of Oxford, UK.
    Faulkner, Graham
    University of Oxford, UK.
    O'Brien, Dominic
    University of Oxford, UK.
    Sproll, Fabian
    Deutsches Zentrum für Luft- und Raumfahrt e.V., Germany.
    Wagner, Paul
    Deutsches Zentrum für Luft- und Raumfahrt e.V., Germany.
    Hampf, Daniel
    Deutsches Zentrum für Luft- und Raumfahrt e.V., Germany.
    Riede, Wolfgang
    Deutsches Zentrum für Luft- und Raumfahrt e.V., Germany.
    Salter, Michael
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Wang, Qin
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Platt, Duncan
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Jakonis, Darius
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Piao, Xiaoyu
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Karlsson, Mikael
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Oberg, Olof
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Petermann, Ingemar
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Michalkiewicz, Aneta
    Astri Polska Sp., Poland.
    Krezel, Jerzy
    Astri Polska Sp., Poland.
    Debowska, Anna
    Astri Polska Sp., Poland.
    Thueux, Yoann
    Airbus Group Innovations, UK.
    The C3PO project: A laser communication system concept for small satellites2017In: Proceedings of SPIE - The International Society for Optical Engineering, 2017Conference paper (Refereed)
    Abstract [en]

    The satellite market is shifting towards smaller (micro and nanosatellites), lowered mass and increased performance platforms. Nanosatellites and picosatellites have been used for a number of new, innovative and unique payloads and missions. This trend requires new concepts for a reduced size, a better performance/weight ratio and a reduction of onboard power consumption. In this context, disruptive technologies, such as laser-optical communication systems, are opening new possibilities. This paper presents the C3PO1 system, "advanced Concept for laser uplink/ downlink CommuniCation with sPace Objects", and the first results of the development of its key technologies. This project targets the design of a communications system that uses a ground-based laser to illuminate a satellite, and a Modulating Retro-Reflector (MRR) to return a beam of light modulated by data to the ground. This enables a downlink, without a laser source on the satellite. This architecture suits well to small satellite applications so as high data rates are potentially provided with very low board mass. C3PO project aims to achieve data rates of 1Gbit/s between LEO satellites and Earth with a communication payload mass of less than 1kilogram. In this paper, results of the initial experiments and demonstration of the key technologies will be shown.

  • 2.
    Karlsson, Mikael
    et al.
    RISE - Research Institutes of Sweden, ICT, Acreo. Pamitus AB, Sweden.
    Strandqvist, Carl
    Swedish National Forensic Centre, Sweden.
    Jussi, Johnny
    RISE - Research Institutes of Sweden, ICT, Acreo. KTH Royal Institute of Technology, Sweden.
    Öberg, Olof
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Petermann, Ingemar
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Elmlund, Louise
    Swedish National Forensic Centre, Sweden.
    Dunne, Simon
    Swedish National Forensic Centre, Sweden.
    Fu, Ying
    KTH Royal Institute of Technology, Sweden.
    Wang, Qin
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Chemical Sensors Generated on Wafer-Scale Epitaxial Graphene for Application to Front-Line Drug Detection2019In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 19, no 10, article id 2214Article in journal (Refereed)
    Abstract [en]

    Generation of large areas of graphene possessing high quality and uniformity will be a critical factor if graphene-based devices/sensors are to be commercialized. In this work, epitaxial graphene on a 2" SiC wafer was used to fabricate sensors for the detection of illicit drugs (amphetamine or cocaine). The main target application is on-site forensic detection where there is a high demand for reliable and cost-efficient tools. The sensors were designed and processed with specially configured metal electrodes on the graphene surface by utilizing a series of anchors where the metal contacts are directly connected on the SiC substrate. This has been shown to improve adhesion of the electrodes and decrease the contact resistance. A microfluidic system was constructed to pump solutions over the defined graphene surface that could then act as a sensor area and react with the target drugs. Several prototypic systems were tested where non-covalent interactions were used to localize the sensing components (antibodies) within the measurement cell. The serendipitous discovery of a wavelength-dependent photoactivity for amphetamine and a range of its chemical analogs, however, limited the general application of these prototypic systems. The experimental results reveal that the drug molecules interact with the graphene in a molecule dependent manner based upon a balance of π -stacking interaction of the phenyl ring with graphene (p-doping) and the donation of the amine nitrogens lone pair electrons into the π - π *-system of graphene (n-doping).

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