Patterning of Aluminium thin film on polyethylene terephthalate by multi-beam picosecond laser

Yang, Jin; Perrie, Walter; Harris, Paul G.; Allegre, Olivier; Abrams, Kerry J.; Dearden, Geoff

doi:10.1016/j.optlaseng.2015.04.006

Cited by 14 publications

(3 citation statements)

References 16 publications

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“…Our observations of the directed deposition at low fluence and jets during high-fluence, multi-spot ultrafast laser ablation of stainless steel in air constitute a potentially interesting new area of research, providing a basis for further investigations to build a thorough understanding of these complex phenomena. Our study and its findings are considered important for a deeper understanding of the interaction of multi-spot arrays in laser patterning [ 71 , 72 ] and enhanced laser deposition of thin films [ 53 , 55 ]. The phenomena of plasma collisions and shocks observed and explored here should also be relevant to astrophysics and physics research, such as in magnetic re-connection [ 73 ] and phenomena such as bi-directional jet formation and particle acceleration [ 74 , 75 ] observed at ultrahigh laser intensities (10 14 –10 15 W cm −2 ) in two spot ablation with high transient B fields.…”

Section: Discussionmentioning

confidence: 99%

Backward Flux Re-Deposition Patterns during Multi-Spot Laser Ablation of Stainless Steel with Picosecond and Femtosecond Pulses in Air

et al. 2021

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We report on novel observations of directed re-deposition of ablation debris during the ultrafast laser micro-structuring of stainless steel in the air with multi-beams in close proximity on the surface. This interesting phenomenon is observed with both 10 ps and 600 fs NIR laser pulses at 5 kHz repetition rate. Ablation spot geometries could be altered with the use of beam splitting optics or a phase-only Spatial Light modulator. At low fluence (F ~ 1.0 J cm−2) and pulse exposure of a few hundred pulses, the debris appears as concentrated narrow “filaments” connecting the ablation spots, while at higher fluence, (F ~ 5.0 J cm−2) energetic jets of material emanated symmetrically along the axes of symmetry, depositing debris well beyond the typical re-deposition radius with a single spot. Patterns of backward re-deposition of debris to the surface are likely connected with the colliding shock waves and plasma plumes with the ambient air causing stagnation when the spots are in close proximity. The 2D surface debris patterns are indicative of the complex 3D interactions involved over wide timescales during ablation from picoseconds to microseconds.

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Section: Discussionmentioning

confidence: 99%

Backward Flux Re-Deposition Patterns during Multi-Spot Laser Ablation of Stainless Steel with Picosecond and Femtosecond Pulses in Air

et al. 2021

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“…The patterning of thin metal films using laser ablation has been known for some time now [1][2][3]. More recently it has been used by the present authors to produce electrode structures for a.c. electroluminescent lamps [4,5].…”

Section: Background and Objectivesmentioning

confidence: 99%

26.3: High Resolution Laser Etched Circuitry for ACEL Lamps

Silver

Harris

Fern

et al. 2015

Symp Digest of Tech Papers

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“…It has been experimentally verified that grooves with a depth over 5 μm on the surface of stainless steel [13] and patterns with an average depth about 125 μm on the surface of copper (Cu) [14] could be obtained by direct laser ablation from the front side. Jin et al [15] studied the ablation of an aluminum (Al) thin film on a flexible polyethylene terephthalate (PET) substrate by a picosecond pulsed laser. Their results indicated that the 30-nm-thick Al thin film could be successfully removed from the substrate through both the front and rear side ablation, and the front side ablation showed better edge quality than the rear side ablation that was featured by significant Al film delamination.…”

Section: Introductionmentioning

confidence: 99%

Selective laser ablation and patterning on Ag thin films with width and depth control

Huang

Zhang

et al. 2020

J Mater Sci: Mater Electron

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Silver (Ag) films were deposited on glass substrates by radio frequency (RF) magnetron sputtering and then ablated by a 532 nm nanosecond pulsed laser. The effects of laser fluence and defocusing amount on the width and depth of laser-ablated grooves on 100-and 600-nm-thick Ag films were systematically investigated under single-and multi-scan ablation. The results suggested that the Ag films could be successfully removed from the substrate owing to laser-induced thermoelastic force or vaporization. It was confirmed that laser fluence and defocusing amount played very important roles in controlling the width and depth of the laser-ablated grooves. In the present work, grooves with widths ranging from 53 to 196 μm and depths ranging from 56 to 196 nm were obtained on 100-nm-thick Ag films by single-scan laser ablation, and laser ablation or removal with controllable depths was realized on 600-nm-thick Ag films by adopting single-or multi-scan (i.e., scanning numbers of 1-6). Furthermore, square spiral Ag patterns were successfully obtained by single-and multi-scan laser ablation and showed good electrical conductivity in a simple circuit. This work may have great potential applications in various fields that demand width and depth control of laser ablation/removal.

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Patterning of Aluminium thin film on polyethylene terephthalate by multi-beam picosecond laser

Cited by 14 publications

References 16 publications

Backward Flux Re-Deposition Patterns during Multi-Spot Laser Ablation of Stainless Steel with Picosecond and Femtosecond Pulses in Air

Backward Flux Re-Deposition Patterns during Multi-Spot Laser Ablation of Stainless Steel with Picosecond and Femtosecond Pulses in Air

26.3: High Resolution Laser Etched Circuitry for ACEL Lamps

Selective laser ablation and patterning on Ag thin films with width and depth control

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