Pico- to nanosecond pulsed laser-induced forward transfer (LIFT) of silver nanoparticle inks: a comparative study
article
Silver nanoparticle inks are among the key functional materials used in printed electronics. Depositing it by laser-induced forward transfer remains a challenging task because the non-linear rheological nature of these inks narrows the range of the laser processing parameters. Understanding, therefore, the influence of the laser parameters on the ejection dynamics and deposition quality is of critical importance. The influence of the laser pulse duration from pico- to nanosecond-laser-induced jet dynamics was investigated using time-resolved shadowgraphy imaging. Jet speed and surface area analyses showed that in the lower laser fluence level range, picosecond pulses induce higher surface area ejections which propagate at higher velocities. As the laser fluence levels were increased, the difference in jet velocity and surface area evolutions narrows. Deposition analysis showed a similar behavior with lower transfer thresholds and larger depositions at lower fluence range when picosecond-laser pulses were used.
Topics
DepositionFunctional materialsLaser beam effectsLaser pulsesMass transferMetal nanoparticlesSilver nanoparticlesUltrafast lasersComparative studiesLaser induced forward transferLaser processing parametersLaser pulse durationNanosecond lasersNanosecond pulsed laserPrinted electronicsSurface area analysisPulsed lasers
TNO Identifier
870198
ISSN
09478396
Source
Applied Physics A: Materials Science and Processing, 125(12)
Publisher
Springer Verlag
Article nr.
814