An analysis of boundary-effects in obtaining the frequency dependent specific heat by effusivity measurements

Tage Emil Christensen; Claus Behrens

An analysis of boundary-effects in obtaining the frequency dependent specific heat by effusivity measurements

Publikation: Konferencebidrag › Poster › Forskning

Abstract

The frequency dependent specific heat is a significant response function characterizing the glass transition. Contrary to the dielectric response it is not easily measured over many decades. The introduction of the 3-omega method, where the temperature oscillations at a planar oscillatoric heat generator is measured, made this possible. The method relied on a 1-d solution to the heat diffusion equation. There have been attempts to invoke the boundary effects to first order. However we present the fully 3-d solution to the problem including these effects. The frequency range can hereby be considerably enhanced.

Originalsprog	Engelsk
Publikationsdato	2004
Status	Udgivet - 2004
Begivenhed	International Workshop on Dynamics in Viscous Liquids - München, Tyskland Varighed: 14 mar. 2004 → 17 mar. 2004 Konferencens nummer: 1

Konference

Konference	International Workshop on Dynamics in Viscous Liquids
Nummer	1
Land	Tyskland
By	München
Periode	14/03/2004 → 17/03/2004

Citer dette

Christensen, T. E., & Behrens, C. (2004). An analysis of boundary-effects in obtaining the frequency dependent specific heat by effusivity measurements. Poster session præsenteret på International Workshop on Dynamics in Viscous Liquids, München, Tyskland.

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abstract = "The frequency dependent specific heat is a significant response function characterizing the glass transition. Contrary to the dielectric response it is not easily measured over many decades. The introduction of the 3-omega method, where the temperature oscillations at a planar oscillatoric heat generator is measured, made this possible. The method relied on a 1-d solution to the heat diffusion equation. There have been attempts to invoke the boundary effects to first order. However we present the fully 3-d solution to the problem including these effects. The frequency range can hereby be considerably enhanced.",

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AU - Christensen, Tage Emil

AU - Behrens, Claus

N1 - Conference code: 1

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N2 - The frequency dependent specific heat is a significant response function characterizing the glass transition. Contrary to the dielectric response it is not easily measured over many decades. The introduction of the 3-omega method, where the temperature oscillations at a planar oscillatoric heat generator is measured, made this possible. The method relied on a 1-d solution to the heat diffusion equation. There have been attempts to invoke the boundary effects to first order. However we present the fully 3-d solution to the problem including these effects. The frequency range can hereby be considerably enhanced.

AB - The frequency dependent specific heat is a significant response function characterizing the glass transition. Contrary to the dielectric response it is not easily measured over many decades. The introduction of the 3-omega method, where the temperature oscillations at a planar oscillatoric heat generator is measured, made this possible. The method relied on a 1-d solution to the heat diffusion equation. There have been attempts to invoke the boundary effects to first order. However we present the fully 3-d solution to the problem including these effects. The frequency range can hereby be considerably enhanced.

M3 - Poster

Y2 - 14 March 2004 through 17 March 2004

ER -