Small clusters of colloidal rods formed during the initial stage of spinodal decomposition in the isotropic fluid phase. They indicate a phase transition to an orientationally ordered nematic phase.
From the article:
Kinetic Pathways for the Isotropic-Nematic Phase Transition in a System of Colloidal Hard Rods: A Simulation StudyAlejandro Cuetos and Marjolein Dijkstra
Phys. Rev. Lett. 98, 095701 (2007)
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