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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 2262-2265 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The hardware and software designs for fast measurement of dielectric properties of different substances over a wide range of characteristic times (10−5–10−10 s) by means of time domain dielectric spectroscopy (TDS) are presented. The characteristic feature of the described installation is the nonuniform time sampling of measured signals, which enables one to cover a wide range of characteristic times with a single measurement. Comparative results for an aqueous solution of lysozyme obtained on the traditional apparatus and on the described one are presented.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-1536
    Keywords: Dielectricspectroscopy ; dielectricrelaxation ; proteins ; biologicalmaterials ; solutions ; microemulsions ; polymers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The general principles of time domain dielectric spectroscopy (TDS) are summarized. The methods of data treatment and presentation, and different TDS methods which enable one to obtain the permanent spectrum of ε* (ω) in the frequency range of 105–1010 are given. The examples of TDS application for the investigation of dielectric properties in samples of different nature and structure are considered in this review.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: An Lösungen von Vinylchlorid-Vinylidenchlorid-Copolymeren wurden im Frequenzbereich von 1 bis 104 MHz Messungen mit Hilfe der dielektrische Absorption und Dispersion bei Temperaturen von -20°C bis +20°C durchgeführt. Die Ergebnisse wurden unter Verwendung der Havriliak-Negami-Gleichung analysiert und in Beziehung zum Bewegungsverhalten der Copolymere gesetzt. Die dielektrische Korrelationsfunktion wurde mit Korrelationsfunktionen unterschiedlicher Modelle verglichen, die bei NMR-Untersuchungen verwendet werden.
    Notes: Dielectric time domain spectroscopy measurements were performed on vinyl chloride/vinylidene chloride copolymers in solution over a frequency range of 1 to 104 MHz. The dielectric absorption and dispersion have been studied at temperatures from -20°C to +20°C. The data were analyzed by using the Havriliak-Negami equation and related to the motional behaviour. The dielectric correlation function was compared with those from different motional models used in NMR experiments.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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