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Träfflista för sökning "WFRF:(Forster J. R.) srt2:(2005-2009)"

Search: WFRF:(Forster J. R.) > (2005-2009)

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1.
  • Welch, J., et al. (author)
  • The Allen Telescope Array: The First Widefield, Panchromatic, Snapshot Radio Camera for Radio Astronomy and SETI
  • 2009
  • In: Proceedings of the IEEE. - 1558-2256 .- 0018-9219. ; 97:8, s. 1438-1447
  • Journal article (peer-reviewed)abstract
    • The first 42 elements of the Allen Telescope Array (ATA-42) are beginning to deliver data at the Hat Creek Radio Observatory in northern California. Scientists and engineers are actively exploiting all of the flexibility designed into this innovative instrument for simultaneously conducting surveys of the astrophysical sky and conducting searches for distant technological civilizations. This paper summarizes the design elements of the ATA, the cost savings made possible by the use of commercial off-the-shelf components, and the cost/performance tradeoffs that eventually enabled this first snapshot radio camera. The fundamental scientific program of this new telescope is varied and exciting; some of the first astronomical results will be discussed.
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2.
  • Hjelm, J., et al. (author)
  • Conducting polymers containing in-chain metal centers : Electropolymerization of oligothienyl-substituted {M(tpy)(2)} complexes and in situ conductivity studies, M = Os(II), Ru(II)
  • 2005
  • In: Inorganic Chemistry. - : American Chemical Society (ACS). - 0020-1669 .- 1520-510X. ; 44:4, s. 1073-1081
  • Journal article (peer-reviewed)abstract
    • The electropolymerization of a series of Ru and Os bis-terpyridine complexes that form rodlike polymers with bithienyl, quaterthienyl, or hexathienyl bridges has been studied. Absorption spectroscopy, scanning electron microscopy, and cyclic voltammetry have been used to characterize the monomers and resulting polymer films. The absolute dc conductivity of the quaterthienyl-bridged {Ru(tpy)(2)} and {Os(tpy)(2)} polymers is unusually large and independent of the identity of the metal center at 1.6 x 10(-3) S cm(-1). The maximum conductivity occurs at the formal potential of each redox process, which typically is observed for systems where redox conduction is the dominant charge transport mechanism. Significantly, the dc conductivity of the metal-based redox couple observed in these polymers is 2 orders of magnitude higher than that of a comparable nonconjugated system.
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  • Result 1-4 of 4

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