Electrohydrodynamic "drop-and-place" particle deployment

Published

Journal Article

The "drop-and-place" paradigm aims at delivering and positioning liquid drops using a pulsed electrohydrodynamic jet. On-demand drops much smaller than the diameter of the delivery nozzle may also contain particles. We report proof-of-concept experiments on the delivery of single 2 μm diameter particles using a 50 μm nozzle and identify the control parameters for dosing and positioning accuracies. A positioning accuracy at the micrometer level is achieved by eliminating contact line pinning on a hydrophobic surface and minimizing impingement-induced motion. The dosing statistics follow the random Poisson distribution, indicating that single-particle accuracy can be achieved using a gating mechanism. © 2006 American Institute of Physics.

Full Text

Duke Authors

Cited Authors

  • Chen, CH; Saville, DA; Aksay, IA

Published Date

  • April 10, 2006

Published In

Volume / Issue

  • 88 / 15

International Standard Serial Number (ISSN)

  • 0003-6951

Digital Object Identifier (DOI)

  • 10.1063/1.2191733

Citation Source

  • Scopus