Title

Dynamics of Penta-Hepta Defect in a Hexagonal Pattern

Authors

Tammy Tam

Document Type

Article

Publication Date

1999

Abstract

The spatial and temporal dynamics of penta-hepta defects (PHD) and line defects in hexagonal patterns are studied. The hexagonal pattern is formed by a layer of soap bubbles (~1 mm in diameter) floating on a glass plate. We have found that the defect consistently moves in the direction perpendicular to the wavevector of nonsingular mode [1]. Our findings differ with the theoretical prediction for a different system with the same pattern by 90 degrees. Experimental apparatus includes: CCD camera, video image grabbing computer, and SVHS recorder. 1. Lev Tsimring, Phys. Rev. Lett., 74, 4201 (1995)

Advisor

M. Wu

Department

physics

Support

Research Corporation

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