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Sökning: WFRF:(Williams S) > RISE

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1.
  • Janssen, Tjbm, et al. (författare)
  • Towards a cryogen-free table-top primary resistance standard
  • 2016
  • Ingår i: 2016 Conference on Precision Electromagnetic Measurements (Cpem 2016). - : Institute of Electrical and Electronics Engineers Inc.. - 9781467391344
  • Konferensbidrag (refereegranskat)abstract
    • We demonstrate quantum Hall resistance measurements with metrological accuracy in a small cryogen-free system operating at a temperature of around 3.8 K and magnetic fields below 5 T. We use this system to investigate the optimisation of graphene/SiC devices for maximum breakdown current. In addition we report the first characterisation of a cryogen-free cryogenic current comparator which enables entirely cryogen-free primary resistance metrology.
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2.
  • Janssen, Tjbm, et al. (författare)
  • Operation of graphene quantum Hall resistance standard in a cryogen-free table-top system
  • 2015
  • Ingår i: 2D Materials. - : IOP Publishing. - 2053-1583. ; 2:3, s. 035015-
  • Tidskriftsartikel (refereegranskat)abstract
    • Wedemonstrate quantum Hall resistance measurements with metrological accuracy in a small cryogen-free system operating at a temperature of around 3.8Kand magnetic fields below 5 T. Operating this system requires little experimental knowledge or laboratory infrastructure, thereby greatly advancing the proliferation of primary quantum standards for precision electrical metrology. This significant advance in technology has come about as a result of the unique properties of epitaxial graphene on SiC.
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3.
  • Treu, A., et al. (författare)
  • Durability and protection of timber structures in marine environments in Europe : An overview
  • 2019
  • Ingår i: BioResources. - : North Carolina State University. - 1930-2126 .- 1930-2126. ; 14:4, s. 10161-10184
  • Tidskriftsartikel (refereegranskat)abstract
    • Timber structures in marine applications are often exposed to severe degradation conditions caused by mechanical loads and wood-degrading organisms. This paper presents the use of timber in marine environments in Europe from a wood protection perspective. It discusses the use of wood in coastline protection and archeological marine wood, reviews the marine borer taxa in European waters, and gives an overview of potential solutions for protection of timber in marine environments. Information was compiled from the most relevant literature sources with an emphasis on new wood protection methods; the need for research and potential solutions are discussed. Traditionally, timber has been extensively utilized in a variety of marine applications. Although there is a strong need for developing new protection systems for timber in marine applications, the research in this field has been scarce for many years. New attempts to protect timber used in marine environments in Europe have mainly focused on wood modification and the use of mechanical barriers to prevent colonization of marine wood borers. The importance of understanding the mechanisms of settlement, migration, boring, and digestion of the degrading organisms is key for developing effective systems for protecting timber in marine environments
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  • Resultat 1-3 av 3

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