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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Friday, 05 September 2014
(at 14:00 in room 115, Hallwachsstr. 3)
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Self-Assembled Swimmers and Spinners

Igor Aronson


Argonne National Laboratory, U.S.A.
   






Dynamically assembled colloidal materials and structures consume energy from the environment to maintain structural complexity and functional diversity. Energy injection rates and properties of the environment are important control parameters, tailoring the outcome of dynamic self-assembly. We demonstrate that magnetic colloidal dispersions confined at the air-liquid interface and energized by a uniaxial alternating magnetic field, self-assembles into a variety of tunable structures ranging from the pulsating clusters, particle-thin wires to swimmers and dynamic arrays of spinners (self-assembled short chains) rotating in either direction. The spinners emerge via spontaneous breaking of the uniaxial symmetry of the energizing magnetic field. The ability to form, disassemble, fine-tune, and manipulate colloidal assemblies is crucial for the design and development of new micro-scale structures capable of performing predesigned tasks such as transport of cargo, mixing and dynamic wiring of the components.

Brief Bio:



Announcement (pdf)

Invited by D.A. Ryndyk

Within the Nanoscale Modeling Seminar

last modified: 2018.10.24 Mi
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