Single step high-speed printing of continuous silver lines by laser-induced forward transfer

Puerto, D.; Biver, Emeric; Alloncle, Anne-Patricia; Delaporte, Ph.

doi:10.1016/j.apsusc.2015.11.017

Cited by 31 publications

(17 citation statements)

References 35 publications

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“…The mildest one corresponds to the tilting of the jet propagation direction induced by the capillary wave generated in the liquid donor film by the preceding neighboring jet . At irradiation conditions leading to the formation of prominent bubbles, though, a second and stronger type of interaction can take place: the collision of the two (or more) adjacent bubbles during their expansion, which results in the total alteration of the jet propagation dynamics and which can lead to completely unpredicted printing outcomes . In consequence, these issues need to be taken into account in the preparation of the printing layout under very high speed operation.…”

Section: Lift From Liquid Donor Filmsmentioning

confidence: 99%

“…Several strategies have been investigated to mitigate this effect, like overlapping sets of droplets with an intermediate drying step, or printing within fluidic guides previously generated by laser ablation . At high laser scan speeds (tens of m s −1 ) and repetition rates (1 MHz), the interaction between jets described in Section can surprisingly also help suppress bulging . After transfer, the inks must be dried and sintered, a step that can be also carried out by laser irradiation …”

Section: Applicationsmentioning

confidence: 99%

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Laser‐Induced Forward Transfer: Fundamentals and Applications

Serra

Piqué

2018

Adv Materials Technologies

271

191

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Laser‐induced forward transfer (LIFT) is a digital printing technique that uses a pulsed laser beam as the driving force to project material from a donor thin film toward the receiving substrate whereon that material will be finally deposited as a voxel. This working principle allows LIFT to operate with both solid and liquid donor films, which provides the technique with an unprecedented broad spectrum of printable materials, and thus makes it very competitive over other digital technologies, like inkjet printing. It is not only that LIFT can access a much wider range of ink viscosities and loading particle sizes; the possibility of printing from solid films allows the single‐step printing of multilayers and entire devices, and even makes possible 3D printing. This versatility translates, in turn, into a broad field of applications, from graphics production to printed electronics, from the fabrication of chemical sensors to tissue engineering. This monograph provides an extensive review of the LIFT technique, from its origins to the most recent achievements, focusing on the fundamental aspects of both its working principle and transfer dynamics, as well as on its broad range of applications.

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Section: Lift From Liquid Donor Filmsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Laser‐Induced Forward Transfer: Fundamentals and Applications

Serra

Piqué

2018

Adv Materials Technologies

271

191

View full text Add to dashboard Cite

show abstract

“…Therefore, there is a temporal limit for printing successive voxels, i.e., the time needed for the fluid to move [18]. This limit can be overcome by using high repetition lasers [11,19]. If the time between pulses is short enough as compared with the beam displacement, the cavitation bubbles generated in the fluid by successive pulses interact and merge, the transferred jets are linked, and a continuous line can be printed.…”

Section: Discussionmentioning

confidence: 99%

“…When using direct LIFT of low viscosity fluids containing metallic nanoparticles, the possible effects of interference between successive laser pulses [10] and the length of time delay needed between pulses should be taken into account proving that a voxel has reached its steady-state shape before the next voxel is transferred. Interference between successive voxels can lead to debris and reduced uniformity of the line, but can also be used for printing lines using multi-jets under certain experimental conditions [11]. Moreover, this effect is more significant in the case of high viscosity metallic pastes [12].…”

Section: Introductionmentioning

confidence: 99%

Overlapping Limitations for ps-Pulsed LIFT Printing of High Viscosity Metallic Pastes

Muñoz-Martín

Chen

Morales

et al. 2020

Metals

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Laser-induced forward transfer (LIFT) technique has been used for printing a high viscosity (250 Pa·s) commercial silver paste with micron-size particles (1–4 µm). Volumetric pixels (voxels) transferred using single ps laser pulses are overlapped in order to obtain continuous metallic lines. However, interference problems between successive voxels is a major issue that must be solved before obtaining lines with good morphologies. The effects of the laser pulse energy, thickness of the donor paste film, and distance between successive voxels on the morphology of single voxels and lines are discussed. Due to the high viscosity of the paste, the void in the donor film after a printing event remains, and it negatively affects the physical transfer mechanism of the next laser pulses. When two laser pulses are fired at a short distance, there is no transfer at all. Only when the pulses are separated by a distance long enough to avoid interference but short enough to allow overlapping (≈100 µm), is it possible to print continuous lines in a single step. Finally, the knowledge obtained has allowed the printing of silver lines at high speeds (up to 60 m/s).

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“…The LIFT process utilizes a pulsed laser beam as a driving force to transfer the material from the donor substrate to the acceptor substrate, which are in proximity [17,18]. The NPs transferred by a single pulse have a circular shape in general [19], and therefore, the single transfer has to be repeated at specific laser parameters and a proper hatch size to integrate each droplet and create continuous features [20,21]. Furthermore, unlike the SLS process, additional heat treatment is essential for these metal NPs to function properly as electrodes [20,22].…”

Section: Introductionmentioning

confidence: 99%

Continuous-Wave Laser-Induced Transfer of Metal Nanoparticles to Arbitrary Polymer Substrates

et al. 2020

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Laser-induced forward transfer (LIFT) and selective laser sintering (SLS) are two distinct laser processes that can be applied to metal nanoparticle (NP) ink for the fabrication of a conductive layer on various substrates. A pulsed laser and a continuous-wave (CW) laser are utilized respectively in the conventional LIFT and SLS processes; however, in this study, CW laser-induced transfer of the metal NP is proposed to achieve simultaneous sintering and transfer of the metal NP to a wide range of polymer substrates. At the optimum laser parameters, it was shown that a high-quality uniform metal conductor was created on the acceptor substrate while the metal NP was sharply detached from the donor substrate, and we anticipate that such an asymmetric transfer phenomenon is related to the difference in the adhesion strengths. The resultant metal electrode exhibits a low resistivity that is comparable to its bulk counterpart, together with strong adhesion to the target polymer substrate. The versatility of the proposed process in terms of the target substrate and applicable metal NPs brightens its prospects as a facile manufacturing scheme for flexible electronics.

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Single step high-speed printing of continuous silver lines by laser-induced forward transfer

Cited by 31 publications

References 35 publications

Laser‐Induced Forward Transfer: Fundamentals and Applications

Laser‐Induced Forward Transfer: Fundamentals and Applications

Overlapping Limitations for ps-Pulsed LIFT Printing of High Viscosity Metallic Pastes

Continuous-Wave Laser-Induced Transfer of Metal Nanoparticles to Arbitrary Polymer Substrates

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