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  • azooxide gel  (1)
  • dynamical system with singularity  (1)
  • 1
    Electronic Resource
    Electronic Resource
    A note on Sinaï and Bunimovich's Markov partition for billiards (1986)
    Springer
    Journal of statistical physics 45 (1986), S. 63-68 
    Details
    ISSN: 1572-9613
    Keywords: Billiards ; Markov partition ; Markov process ; dynamical system with singularity ; hyperbolic mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract I present a construction of Markov partitions related to a statistical description of a class of hyperbolic dynamical systems of ℝ2 with singularities, through a general algorithm. This construction, correct, in contrast to previous attempts, applies in particular to billiards problems, yielding an easy-to-handle Markov partition; as an application, the incorrectness of a lemma of Bunimovich and Sinai (which was known to need improvement) is made clear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01033077
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  • 2
    Electronic Resource
    Electronic Resource
    Modified sol-gel films for optical storage (1994)
    Springer
    Journal of sol gel science and technology 2 (1994), S. 779-782 
    Details
    ISSN: 1573-4846
    Keywords: azooxide gel ; photoisomerization ; birefringence ; functionalized alkoxide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Substituted azobenzene molecules (DR1, DO3, DR17, DY7, Magneson1, DR19C1 and DR19CICI) are grafted onto a silicon alkoxide precursor. Films are prepared by the sol-gel process. We have conducted preliminary optical experiments with DR1 and DO3 functionalized oxide gels. Optical information is written on the sol-gel film via the trans-cis-trans photoisomerization process with a polarized argon laser beam and read with a low power He-Ne laser. A stable signal (up to 60% of the maximum birefringence) is read a long time after the writing beam had been turned off. This shows the ability of the azo oxide gels to store optical information.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00486349
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    Paper (German National Licenses)
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