Nanometer Scale Dielectric Fluctuations at the Glass Transition

by: Vidal E Russell, NE Israeloff, LE Walther, Alvarez

Physical Review Letters, Vol. 81, No. 7. (1998), 1461.

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Abstract

Using noncontact scanning probe microscopy techniques; dielectric properties were studied on 50 nm length scales in polyvinyl-acetate films in the vicinity of the glass transition. Low frequency (1/ f ) noise observed in the measurements was shown to arise from thermal fluctuations of the electric polarization. Anomalous variations observed in the noise spectrum provide direct evidence for cooperative nanoregions with heterogeneous kinetics. The cooperative length scale was determined. Heterogeneity was long lived only well below the glass transition for faster than average processes.

@article{citeulike:2453697, abstract = {Using noncontact scanning probe microscopy techniques; dielectric properties were studied on 50 nm length scales in polyvinyl-acetate films in the vicinity of the glass transition. Low frequency (1/ f ) noise observed in the measurements was shown to arise from thermal fluctuations of the electric polarization. Anomalous variations observed in the noise spectrum provide direct evidence for cooperative nanoregions with heterogeneous kinetics. The cooperative length scale was determined. Heterogeneity was long lived only well below the glass transition for faster than average processes.}, author = {Russell, Vidal E. and Israeloff, N. E. and Walther, L. E. and Alvarez}, citeulike-article-id = {2453697}, doi = {10.1103/PhysRevLett.81.1461}, journal = {Physical Review Letters}, keywords = {glass, systemtools, transition}, number = {7}, pages = {1461+}, posted-at = {2008-03-01 20:29:03}, priority = {2}, publisher = {American Physical Society}, title = {Nanometer Scale Dielectric Fluctuations at the Glass Transition}, url = {http://dx.doi.org/10.1103/PhysRevLett.81.1461}, volume = {81}, year = {1998} }

RIS record

TY - JOUR ID - citeulike:2453697 L3 - citeulike-article-id:2453697 TI - Nanometer Scale Dielectric Fluctuations at the Glass Transition JF - Physical Review Letters VL - 81 IS - 7 SP - 1461 PB - American Physical Society N2 - Using noncontact scanning probe microscopy techniques; dielectric properties were studied on 50 nm length scales in polyvinyl-acetate films in the vicinity of the glass transition. Low frequency (1/ f ) noise observed in the measurements was shown to arise from thermal fluctuations of the electric polarization. Anomalous variations observed in the noise spectrum provide direct evidence for cooperative nanoregions with heterogeneous kinetics. The cooperative length scale was determined. Heterogeneity was long lived only well below the glass transition for faster than average processes. KW - glass KW - systemtools KW - transition AU - Russell, Vidal AU - Israeloff, NE AU - Walther, LE AU - Alvarez PY - 1998//17/ UR - http://dx.doi.org/10.1103/PhysRevLett.81.1461 ER -

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