Picosecond dynamic heterogeneity, hopping, and Johari-Goldstein relaxation in glass-forming liquids

We show that incoherent quasielastic neutron scattering from molecular liquids reveals a two-state dynamic heterogeneity on a 1 ps time scale, where molecules are either highly confined or are free to undergo relatively large excursions. Data ranging from deep in the glassy state to well above the m...

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Veröffentlicht in:	Physical review letters 2014-09, Vol.113 (11), p.117801-117801, Article 117801
Hauptverfasser:	Cicerone, Marcus T, Zhong, Qin, Tyagi, Madhusudan
Format:	Artikel
Sprache:	eng
Schlagworte:	Dynamics Exchange Glass - chemistry Glass formation Heterogeneity Liquids Mathematical analysis Models, Chemical Neutron Diffraction Neutron scattering Phase Transition Thermodynamics Time
Online-Zugang:	Volltext
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