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Opt Express. 2008 Mar 3;16(5):3249-54.

Ballistic laser-assisted solid transfer (BLAST) from a thin film precursor.

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  • 1Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ,UK.


A novel technique for the laser-induced forward transfer (LIFT) of material in solid phase from a thin film precursor is presented. Multiple, sub-threshold energy femtosecond pulses are used to lessen the adhesion of a donor film to a support substrate to facilitate forward transfer of solid 'pellets' of donor material to a receiver. A relatively higher intensity outer ring is added to the transfer laser pulses, by means of the near-field diffraction pattern of a circular aperture, to define the area for transfer in the donor film and allow for more reproducible pellet shapes. This technique has been termed Ballistic Laser-Assisted Solid Transfer (BLAST).

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