Local fluctuations and FDR violations in aging glass

• Published in: Journal of non-crystalline solids Vol. 352; no. 42-49; pp. 4915 - 4919
• Main Authors: Israeloff, N.E., Oukris, H., Crider, P.S.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 15.11.2006; Elsevier
• Subjects: Applied sciences; Atomic force and scanning tunneling microscopy; Condensed matter: structure, mechanical and thermal properties; Dielectric properties; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Fluctuations; Glass transition; Organic polymers; Physicochemistry of polymers; Physics; Properties and characterization; Relaxation, electric modulus; Solid-solid transitions; Specific phase transitions; Structure, morphology and analysis; Relaxation, electric modulus; Glass transition; Fluctuations; Atomic force and scanning tunneling microscopy; Dielectric properties; Time dependence; Dielectric properties; Relaxation; Fluctuation dissipation theorem; Glassy polymer; Scanning force microscopy; Glass; Aging; electric modulus; Glass transition; Atomic force and scanning tunneling microscopy; Fluctuations; Permittivity
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2006.01.150

Dipolar fluctuations were measured in both macroscopic samples, and locally in mesoscopic volumes of polymer glass. Following a temperature quench, the macroscopic measurements revealed fluctuation–dissipation-relation (FDR) violations with a complex dependence on aging time and measurement frequency. New results on imaging mesoscopic spatio-temporal fluctuations, and the possibility of using this technique to study the heterogeneity of aging and local FDR violations will be discussed.