Thermal analog of gimbal lock in a colloidal ferromagnetic Janus rod

We report an entropy-driven orientational hopping transition in a magnetically confined colloidal Janus rod. In a magnetic field, the sedimented rod randomly hops between horizontal and vertical states: the latter state comes at a substantial gravitational cost at no reduction of magnetic potential...

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Bibliographic Details
Main Authors: Yeomans, J, Gao, Y, Balin, A, Dullens, R, Aarts, D
Format: Journal article
Published: American Physical Society 2015