Frequency-dependent heat capacity

experimental work to improve and understand planar heater experiments using the 3[omega] detection technique

Claus Flensted Behrens

    Publikation: Bog/antologi/afhandling/rapportPh.d.-afhandlingForskning

    Resumé

    The frequency–dependent heat capacity of super-cooled glycerol near the glass transition is measured using the 3w detection technique. An electrical conducting thin film with a temperature–dependent electrical resistance is deposited on a substrate. The thin film is used simultaneously as a heater and as a thermometer. The aim of the work is to improve and understand this planar heater experiment. I find: • Carbon has advantages as heater material over the traditionally used metal (nickel) heaters. • The thermal coupling to the surrounding temperature bath should not be made through the liquid but through the substrate. • Edge effects, as a result of the finite size of the heater, play an important role. The traditionally way of dealing with these effects are not entirely correct. • The Cole–Davidson function with bCD
    OriginalsprogEngelsk
    Udgivelses stedRoskilde
    ForlagRoskilde Universitet
    Antal sider176
    StatusUdgivet - 2004

    Citer dette

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    title = "Frequency-dependent heat capacity: experimental work to improve and understand planar heater experiments using the 3[omega] detection technique",
    abstract = "The frequency–dependent heat capacity of super-cooled glycerol near the glass transition is measured using the 3w detection technique. An electrical conducting thin film with a temperature–dependent electrical resistance is deposited on a substrate. The thin film is used simultaneously as a heater and as a thermometer. The aim of the work is to improve and understand this planar heater experiment. I find: • Carbon has advantages as heater material over the traditionally used metal (nickel) heaters. • The thermal coupling to the surrounding temperature bath should not be made through the liquid but through the substrate. • Edge effects, as a result of the finite size of the heater, play an important role. The traditionally way of dealing with these effects are not entirely correct. • The Cole–Davidson function with bCD",
    author = "Behrens, {Claus Flensted}",
    year = "2004",
    language = "English",
    publisher = "Roskilde Universitet",

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    Frequency-dependent heat capacity : experimental work to improve and understand planar heater experiments using the 3[omega] detection technique. / Behrens, Claus Flensted.

    Roskilde : Roskilde Universitet, 2004. 176 s.

    Publikation: Bog/antologi/afhandling/rapportPh.d.-afhandlingForskning

    TY - BOOK

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    T2 - experimental work to improve and understand planar heater experiments using the 3[omega] detection technique

    AU - Behrens, Claus Flensted

    PY - 2004

    Y1 - 2004

    N2 - The frequency–dependent heat capacity of super-cooled glycerol near the glass transition is measured using the 3w detection technique. An electrical conducting thin film with a temperature–dependent electrical resistance is deposited on a substrate. The thin film is used simultaneously as a heater and as a thermometer. The aim of the work is to improve and understand this planar heater experiment. I find: • Carbon has advantages as heater material over the traditionally used metal (nickel) heaters. • The thermal coupling to the surrounding temperature bath should not be made through the liquid but through the substrate. • Edge effects, as a result of the finite size of the heater, play an important role. The traditionally way of dealing with these effects are not entirely correct. • The Cole–Davidson function with bCD

    AB - The frequency–dependent heat capacity of super-cooled glycerol near the glass transition is measured using the 3w detection technique. An electrical conducting thin film with a temperature–dependent electrical resistance is deposited on a substrate. The thin film is used simultaneously as a heater and as a thermometer. The aim of the work is to improve and understand this planar heater experiment. I find: • Carbon has advantages as heater material over the traditionally used metal (nickel) heaters. • The thermal coupling to the surrounding temperature bath should not be made through the liquid but through the substrate. • Edge effects, as a result of the finite size of the heater, play an important role. The traditionally way of dealing with these effects are not entirely correct. • The Cole–Davidson function with bCD

    M3 - Ph.D. thesis

    BT - Frequency-dependent heat capacity

    PB - Roskilde Universitet

    CY - Roskilde

    ER -