Printing of metallic 3D micro-objects by laser induced forward transfer

Zenou, Michael; Kotler, Zvi

doi:10.1364/oe.24.001431

Cited by 78 publications

(53 citation statements)

References 76 publications

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“…Furthermore, using fs laser pulses with LIFT operating under the conditions described in Sections and enables the printing of very small metallic features in 2D and 3D configurations for applications such as planar interconnects and vertical vias. Finally, conducting lines of Cu, Al, and Au with minimum widths down to 2 µm and with good electrical properties were successfully printed through this approach …”

Section: Applicationsmentioning

confidence: 99%

Laser‐Induced Forward Transfer: Fundamentals and Applications

Serra

Piqué

2018

Adv Materials Technologies

256

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: Applicationsmentioning

confidence: 99%

Laser‐Induced Forward Transfer: Fundamentals and Applications

Serra

Piqué

2018

Adv Materials Technologies

256

191

View full text Add to dashboard Cite

show abstract

“…Because the droplets melt together upon deposition, structures fabricated with LIFT are relative inhomogeneous. The droplet size depends on the size of the focal point of the laser, and thus the exposed area on the donor layer . Layers with a thickness of 3.5 µm have been fabricated .…”

Section: Fabrication Methods For 3d Structures With Areas Of Variousmentioning

confidence: 99%

“…The droplet size depends on the size of the focal point of the laser, and thus the exposed area on the donor layer . Layers with a thickness of 3.5 µm have been fabricated . Moreover, high aspect‐ratio pillars (5 µm in diameter, 860 µm in height) have been fabricated by stacking of droplets ( Figure ) .…”

Section: Fabrication Methods For 3d Structures With Areas Of Variousmentioning

confidence: 99%

“…[143] Layers with a thickness of 3.5 µm have been fabricated. [143] Moreover, high aspect-ratio pillars (5 µm in diameter, 860 µm in height) have been fabricated by stacking of droplets (Figure 6). [142] Since droplets are deposited in vertical direction, overhanging structures cannot be printed in principle, although some metallic droplets, when molten together, do provide sufficient mechanical strength to realize overhanging structures.…”

Section: Laser-induced Forward Transfermentioning

confidence: 99%

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Nanostructure and Microstructure Fabrication: From Desired Properties to Suitable Processes

Assenbergh

Meinders²,

Geraedts

et al. 2018

Small

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When designing a new nanostructure or microstructure, one can follow a processing-based manufacturing pathway, in which the structure properties are defined based on the processing capabilities of the fabrication method at hand. Alternatively, a performance-based pathway can be followed, where the envisioned performance is first defined, and then suitable fabrication methods are sought. To support the latter pathway, fabrication methods are here reviewed based on the geometric and material complexity, resolution, total size, geometric and material diversity, and throughput they can achieve, independently from processing capabilities. Ten groups of fabrication methods are identified and compared in terms of these seven moderators. The highest resolution is obtained with electron beam lithography, with feature sizes below 5 nm. The highest geometric complexity is attained with vat photopolymerization. For high throughput, parallel methods, such as photolithography (≈10 m h ), are needed. This review offers a decision-making tool for identifying which method to use for fabricating a structure with predefined properties.

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“…A handful of metals, such as gold212, silver13, copper2, aluminum14, and chromium1516, have been deposited using this LIFT method. Various types of applications including emerging energy devices and advanced 3D structures have also been utilized using the LIFT techniques17181920212223. Using vacuum deposition methods, such as sputtering24 and thermal evaporation25, pure thin metal films were first grown on transparent carrier substrates.…”

mentioning

confidence: 99%

Additive and Photochemical Manufacturing of Copper

Yung

Sun

Meng

et al. 2016

Sci Rep

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In recent years, 3D printing technologies have been extensively developed, enabling rapid prototyping from a conceptual design to an actual product. However, additive manufacturing of metals in the existing technologies is still cost-intensive and time-consuming. Herein a novel platform for low-cost additive manufacturing is introduced by simultaneously combining the laser-induced forward transfer (LIFT) method with photochemical reaction. Using acrylonitrile butadiene styrene (ABS) polymer as the sacrificial layer, sufficient ejection momentum can be generated in the LIFT method. A low-cost continuous wave (CW) laser diode at 405 nm was utilized and proved to be able to transfer the photochemically synthesized copper onto the target substrate. The wavelength-dependent photochemical behaviour in the LIFT method was verified and characterized by both theoretical and experimental studies compared to 1064 nm fiber laser. The conductivity of the synthesized copper patterns could be enhanced using post electroless plating while retaining the designed pattern shapes. Prototypes of electronic circuits were accordingly built and demonstrated for powering up LEDs. Apart from pristine PDMS materials with low surface energies, the proposed method can simultaneously perform laser-induced forward transfer and photochemical synthesis of metals, starting from their metal oxide forms, onto various target substrates such as polyimide, glass and thermoplastics.

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Printing of metallic 3D micro-objects by laser induced forward transfer

Cited by 78 publications

References 76 publications

Laser‐Induced Forward Transfer: Fundamentals and Applications

Laser‐Induced Forward Transfer: Fundamentals and Applications

Nanostructure and Microstructure Fabrication: From Desired Properties to Suitable Processes

Additive and Photochemical Manufacturing of Copper

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