Cover Picture

Microfluidics: Controlling Liquid Drops with Texture Ratchets (Adv. Mater. 12/2012)

  1. Todd A. Duncombe1,†,‡,
  2. E. Yegân Erdem2,†,§,
  3. Ashutosh Shastry3,†,¶,
  4. Rajashree Baskaran4,
  5. Karl F. Böhringer5,*

Article first published online: 15 MAR 2012

DOI: 10.1002/adma.201290067

Issue

Advanced Materials

Advanced Materials

Volume 24, Issue 12, page 1497, March 22, 2012

Additional Information

How to Cite

Duncombe, T. A., Erdem, E. Y., Shastry, A., Baskaran, R. and Böhringer, K. F. (2012), Microfluidics: Controlling Liquid Drops with Texture Ratchets (Adv. Mater. 12/2012). Adv. Mater., 24: 1497. doi: 10.1002/adma.201290067

Author Information

  1. 1

    Department of Electrical Engineering, University of Washington, Box 352500, Seattle, WA 98195-2500, USA

  2. 2

    Department of Mechanical Engineering, University of Washington, Box 352500, Seattle, WA 98195-2500, USA

  3. 3

    Department of Electrical Engineering, University of Washington, Box 352500, Seattle, WA 98195-2500, USA

  4. 4

    Components Research, Intel Corporation, Hillsboro, OR, USA

  5. 5

    University of Washington, Departments of Electrical Engineering and Bioengineering, Box 352500, Seattle, WA 98195-2500, USA

  1. †

    T.A.D, E.Y.E., and A.S. contributed equally to this work; they are listed in alphabetical order.

  2. ‡

    UC Berkeley, UCB-UCSF Graduate Program in Bioengineering, Berkeley, CA, USA

  3. §

    UC Berkeley, Department of Mechanical Engineering, Berkeley, CA, USA

  4. Corium International, Menlo Park, CA, USA

*University of Washington, Departments of Electrical Engineering and Bioengineering, Box 352500, Seattle, WA 98195-2500, USA.

  1. †

    T.A.D, E.Y.E., and A.S. contributed equally to this work; they are listed in alphabetical order.

  2. ‡

    UC Berkeley, UCB-UCSF Graduate Program in Bioengineering, Berkeley, CA, USA

  3. §

    UC Berkeley, Department of Mechanical Engineering, Berkeley, CA, USA

  4. Corium International, Menlo Park, CA, USA

Publication History

  1. Issue published online: 15 MAR 2012
  2. Article first published online: 15 MAR 2012

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

Get PDF (1519K)

Keywords:

  • drops;
  • superhydrophobicity;
  • microfluidics;
  • vibratory transport;
  • ratchets
Thumbnail image of graphical abstract

Controlled vibration selectively propels multiple microliter-sized drops along texture ratchets: microstructured tracks that rectify oscillations of the three-phase contact line into asymmetric pinning forces that propel each drop in the direction of higher pinning, as investigated by K. F. Böhringer and co-workers on page 1545. This superimposed time-lapse image depicts two pairs of 5 μL dyed water drops traveling and finally merging simultaneously on regular and upside-down texture ratchets molded in polydimethylsiloxane elastomer.

Get PDF (1519K)