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  1. Book ; Article ; Online: Großflächige Plasmavorbehandlung und PECVD bei Atmosphärendruck mittels LARGE-Plasmaquelle ; Large-area plasma pretreatment and atmospheric-pressure PECVD using the LARGE plasma source

    Kotte, Liliana / Mäder, Gerrit / Roch, Julius / Leupolt, Beate / Kaskel, Stefan / Wielant, Jan / Mertens, Tobias / Gammel, Franz J.

    2012  

    Abstract: S.49-60 ... Using the LARGE (Long Arc Generator) plasma source, a long arc, forming a fan-shaped afterglow plasma with a width of 80 to 350 mm is formed at atm. pressure. In contrast to most point-form atm. plasma sources, the method offers an attractive ... ...

    Abstract S.49-60

    Using the LARGE (Long Arc Generator) plasma source, a long arc, forming a fan-shaped afterglow plasma with a width of 80 to 350 mm is formed at atm. pressure. In contrast to most point-form atm. plasma sources, the method offers an attractive means for pre-treatment of large surface areas. The reactive working gas formed by plasmachem. excitation can be used to activate or modify the surfaces of materials ranging from metals to polymers. In this article, the operation of the LARGE plasma source, the means by which coating properties can be modified and its use to deposit SiOx adhesion-promoting layers on metals are described. Of special interest were the optical properties and the morphol. of these deposits as well as their potential as adhesion-promoters in metal-plastic composite structures. Because of its very flexible stand-off distance of up to 60 mm and its compact construction, LARGE technol. is ideal for a wide range of industrial applications. These include coating of 2.5 D components, and formation of nano-structured SiOx layers for mech. and chem. bonding of epoxy adhesives to surfaces.
    Keywords 621 ; 671
    Subject code 660
    Language German
    Publishing country de
    Document type Book ; Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Applications of Surface Enhanced Spectroscopic Techniques to Biosystems

    Steiner, Gerald / Kuhne, Christian / Leupolt, Beate / Fischer, Wolfgang B. / Salzer, Reiner

    1998  , Page(s) S. 106–112

    Abstract: The potential of surface enhanced spectroscopy consists in the detection of very small but specific structures of biomaterials. Surface enhanced infrared absorption (SEIRA) yields fingerprint information on the biomaterials. Electronic interactions ... ...

    Abstract The potential of surface enhanced spectroscopy consists in the detection of very small but specific structures of biomaterials. Surface enhanced infrared absorption (SEIRA) yields fingerprint information on the biomaterials. Electronic interactions between individual groups in the molecule are detected by means of surface enhanced fluorescence (SEF). During the investigation of biomembranes with SEIRA a tenfold intensity enhancement could be obtained. Enhancement factors greater than 100 can be achieved with SEF. Enhancement is considerably influenced by the properties of the metal cluster structure. Biomembranes formed from vesicles containing the nicotinic acetylcholine receptor were spectroscopically characterized. The adsorption of the vesicles on Ge- and Ag surfaces was investigated. The metal cluster structure was optimized in order to obtain high intensity enhancement factors.
    Keywords Biosystem ; Spektralanalyse ; Fluoreszenz ; Membran ; Messtechnik ; Messverfahren ; Messgeraet ; Raman-Effekt ; IR-Spektroskopie ; Wellenlaenge ; Lichtstreuung ; Rezeptor ; Silber ; Germanium ; Protein
    Language English
    Document type Article
    Database OPAC and Environmental database (ULIDAT) of The Federal Environment Agency (UBA)

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