Direct experimental evidence of a growing length scale accompanying the glass transition

被引:697
作者
Berthier, L [1 ]
Biroli, G
Bouchaud, JP
Cipelletti, L
El Masri, D
L'Hôte, D
Ladieu, F
Pierno, M
机构
[1] Univ Montpellier 2, Lab Colloides Verres & Nanomat, UMR 5587, F-34095 Montpellier, France
[2] CNRS, F-34095 Montpellier, France
[3] CEA Saclay, Serv Phys Theor Orme Merisiers, F-91191 Gif Sur Yvette, France
[4] Capital Fund Management, Sci & Finance, F-75009 Paris, France
关键词
D O I
10.1126/science.1120714
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Understanding glass formation is a challenge, because the existence of a true glass state, distinct from liquid and solid, remains elusive: Glasses are liquids that have become too viscous to flow. An old idea, as yet unproven experimentally, is that the dynamics becomes sluggish as the glass transition approaches, because increasingly larger regions of the material have to move simultaneously to allow flow. We introduce new multipoint dynamical susceptibilities to estimate quantitatively the size of these regions and provide direct experimental evidence that the glass formation of molecular liquids and colloidal suspensions is accompanied by growing dynamic correlation length scales.
引用
收藏
页码:1797 / 1800
页数:4
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