Abstract
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.
Original language | English (US) |
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Article number | 154104 |
Journal | Applied Physics Letters |
Volume | 88 |
Issue number | 15 |
DOIs | |
State | Published - Apr 10 2006 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)