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

David L. Sidebottom, C. M. Sorensen

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish
Pages (from-to)189-194
Number of pages6
JournalUnknown Journal
Volume455
StatePublished - 1997

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Dynamic light scattering
Glass transition
light scattering
Signal filtering and prediction
Glass
glass transition temperature
Structural relaxation
glass
Light scattering
coupled modes
predictions
Glass transition temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Time and ensemble averaged dynamic light scattering in orthoterphenyl above and below the glass transition. / Sidebottom, David L.; Sorensen, C. M.

In: Unknown Journal, Vol. 455, 1997, p. 189-194.

Research output: Contribution to journalArticle

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