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Self-assembling fluidic machines

Appl. Phys. Lett. 84, 1798 (2004); doi:10.1063/1.1664019

Issue Date: 8 March 2004

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Bartosz A. Grzybowski
Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208

Michal Radkowski
ProChimia Poland, ul. Zacisze 2, 80-823, Sopot, Poland

Christopher J. Campbell
Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208

Jessamine Ng Lee and George M. Whitesides
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
This letter describes dynamic self-assembly of two-component rotors floating at the interface between liquid and air into simple, reconfigurable mechanical systems ("machines"). The rotors are powered by an external, rotating magnetic field, and their positions within the interface are controlled by: (i) repulsive hydrodynamic interactions between them and (ii) by localized magnetic fields produced by an array of small electromagnets located below the plane of the interface. The mechanical functions of the machines depend on the spatiotemporal sequence of activation of the electromagnets. ©2004 American Institute of Physics.
History: Received 27 October 2003; accepted 15 December 2003
Permalink: http://link.aip.org/link/?APPLAB/84/1798/1
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KEYWORDS and PACS

Keywords
PACS
  • 84.50.+d
    Electric motors
  • 85.85.+j
    Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
  • 47.65.+a
    Magnetohydrodynamics and electrohydrodynamics
  • 68.18.-g
    Langmuir-Blodgett films on liquids
  • YEAR: 2004

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
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REFERENCES (9)
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  2. B. A. Grzybowski and G. M. Whitesides, Science 296, 718 (2002).
  3. B. A. Grzybowski, J. A. Wiles, and G. M. Whitesides, Phys. Rev. Lett. 90, 083903 (2003).
  4. W. D. Ristenpart, I. A. Aksay, I. A. , and D. A. Saville, Phys. Rev. Lett. 90, 128303 (2003).
  5. A. Koschmieder, Benard Cells and Taylor Vortices (Cabridge University Press, New York, 1993).
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  7. Y. N. Xia and G. M. Whitesides, Chem. Int. Ed. 37, 551 (1998).
  8. B. A. Grzybowski, N. Bowden, F. Arias, H. Yang, and G. M. Whitesides, J. Phys. Chem. B 105, 404 (2001).
  9. B. A. Grzybowski and G. M. Whitesides, J. Phys. Chem. B 105, 8870 (2001).

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