Time and ensemble averaged dynamic light scattering in orthoterphenyl above and below the glass transition

D. L. Sidebottom; C. M. Sorensen

Time and ensemble averaged dynamic light scattering in orthoterphenyl above and below the glass transition

D. L. Sidebottom, C. M. Sorensen

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

The way useful information regarding structural relaxation can be assessed from light scattering in the glass is shown using a novel ensemble-average technique. Dynamic light scattering (DLS) measurements performed on glass forming orthoterphenyl reveal an inequality between time and ensemble average correlation functions near and below the calorimetric glass transition temperature, and hence demonstrate ergodicity breaking. The ensemble averaged measurements provide a measure of the so-called non-ergocity parameter below glass transition temperature. The DLS results for orthoterphenyl indicate that the function form for non-ergodicity parameter is consistent with Mode Coupling theory predictions.

Original language	English (US)
Pages (from-to)	189-194
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	455
State	Published - Jan 1 1997
Event	Proceedings of the 1996 MRS Fall Meeting - Boston, MA, USA Duration: Dec 2 1996 → Dec 6 1996

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Time and ensemble averaged dynamic light scattering in orthoterphenyl above and below the glass transition",

abstract = "The way useful information regarding structural relaxation can be assessed from light scattering in the glass is shown using a novel ensemble-average technique. Dynamic light scattering (DLS) measurements performed on glass forming orthoterphenyl reveal an inequality between time and ensemble average correlation functions near and below the calorimetric glass transition temperature, and hence demonstrate ergodicity breaking. The ensemble averaged measurements provide a measure of the so-called non-ergocity parameter below glass transition temperature. The DLS results for orthoterphenyl indicate that the function form for non-ergodicity parameter is consistent with Mode Coupling theory predictions.",

author = "Sidebottom, {D. L.} and Sorensen, {C. M.}",

year = "1997",

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language = "English (US)",

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pages = "189--194",

journal = "Materials Research Society Symposium - Proceedings",

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note = "Proceedings of the 1996 MRS Fall Meeting ; Conference date: 02-12-1996 Through 06-12-1996",

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T1 - Time and ensemble averaged dynamic light scattering in orthoterphenyl above and below the glass transition

AU - Sidebottom, D. L.

AU - Sorensen, C. M.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The way useful information regarding structural relaxation can be assessed from light scattering in the glass is shown using a novel ensemble-average technique. Dynamic light scattering (DLS) measurements performed on glass forming orthoterphenyl reveal an inequality between time and ensemble average correlation functions near and below the calorimetric glass transition temperature, and hence demonstrate ergodicity breaking. The ensemble averaged measurements provide a measure of the so-called non-ergocity parameter below glass transition temperature. The DLS results for orthoterphenyl indicate that the function form for non-ergodicity parameter is consistent with Mode Coupling theory predictions.

AB - The way useful information regarding structural relaxation can be assessed from light scattering in the glass is shown using a novel ensemble-average technique. Dynamic light scattering (DLS) measurements performed on glass forming orthoterphenyl reveal an inequality between time and ensemble average correlation functions near and below the calorimetric glass transition temperature, and hence demonstrate ergodicity breaking. The ensemble averaged measurements provide a measure of the so-called non-ergocity parameter below glass transition temperature. The DLS results for orthoterphenyl indicate that the function form for non-ergodicity parameter is consistent with Mode Coupling theory predictions.

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M3 - Conference article

AN - SCOPUS:0030706933

VL - 455

SP - 189

EP - 194

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

T2 - Proceedings of the 1996 MRS Fall Meeting

Y2 - 2 December 1996 through 6 December 1996

ER -