Abstract
The droplet velocity and the incubation time of pure aluminum micro-droplets, printed using the method of sub-nanosecond laser induced forward transfer, have been measured indicating the formation of supersonic laser-induced jetting. The incubation time and the droplet velocity were extracted by measuring a transient electrical signal associated with droplet landing on the surface of the acceptor substrate. This technique has been exploited for studying small volume droplets, in the range of 10-100 femto-litters for which supersonic velocities were measured. The results suggest elastic propagation of the droplets across the donor-to-acceptor gap, a nonlinear deposition dynamics on the surface of the acceptor and overall efficient energy transfer from the laser beam to the droplets.
Original language | English |
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Article number | 181905 |
Journal | Applied Physics Letters |
Volume | 106 |
Issue number | 18 |
DOIs | |
State | Published - 4 May 2015 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)