Fundamentals of Laser‐Polymer Interactions and their Relevance to Polymer Metallization

Rytlewski, Piotr

doi:10.1002/9781118831670.ch6

Cited by 3 publications

(2 citation statements)

References 138 publications

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“…Laser irradiation can promote photo-and thermochemical reactions such as degradation and/or cross-linking of molecular chains as well as surface amorphization. [42] These complex reactions, in turn, might modify the polymer surface by incorporating new functional groups yielding an activated surface that promotes the reduction of Pd(II) species to Pd. Although the surface ablation is not homogeneous for this particular set of laser parameters, the presence of Pd could be detected and, therefore, ascribed to occur via direct ablation or indirect modification (presence of activated debris).…”

Section: Morphology Of Pbt After Patterning With Picosecond Laser Pulsesmentioning

confidence: 99%

Selective Metallization of Polymers: Surface Activation of Polybutylene Terephthalate (PBT) Assisted by Picosecond Laser Pulses

et al. 2021

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The selective metallization of nonconductive polymer materials has broad applications in the fields of integrated circuit technology and metallized patterns. This work discusses a methodology to pattern metal tracks on polybutylene terephthalate substrates. The process consists of three steps: 1) surface patterning with picosecond laser pulses (1030 nm) in air, 2) Pd seeding via treatment in PdCl2 solution, and 3) selective metallization via electroless copper deposition. Picosecond laser irradiation promotes not only surface roughening but also chemical modification to enable Pd seeding as the polymer surface acquires the ability to reduce Pd(II)‐chloride species to metallic Pd. The laser parameters, as well as the PdCl2 concentration and seeding temperature, have an influence on the polymer surface morphology, the concentration and distribution of metallic Pd, and the copper layer properties. Homogeneous copper layers with well‐defined geometries, good coating‐substrate adhesion, and high electrical conductivity can be obtained. This is ascribed to the synergistic effect of the chemical surface activation and roughness development (from 0.13 to ≈1.6 μm). As the patterning and surface activation are performed in air, directly on the as‐received polymer substrate, this methodology shows great potential for metallization of electronic devices with 3D complex geometries.

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Section: Morphology Of Pbt After Patterning With Picosecond Laser Pulsesmentioning

confidence: 99%

Selective Metallization of Polymers: Surface Activation of Polybutylene Terephthalate (PBT) Assisted by Picosecond Laser Pulses

et al. 2021

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“…Basically, the bulk properties do not change in the laser treatment of the polymer surface. But Laser surface treatment of polymers allows change in laser-induced surface amorphization, surface geometrical deformation, crosslinking of molecular chains, and modification of the surface layer properties [2]. Although laser processing has many advantages, laser processing of materials such as polycarbonate which has high transmittance in the visible and near-infrared spectral range, has some difficulties.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling and CFD Analysis with Experimental Investigation of the Geometry of the Grooves Created with CO2 Laser on the Polycarbonate Plate

Canel,

Baglan,

Karabas

2024

Preprint

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Mathematical modeling of micro-scale grooves was made on the polycarbonate plate. The micro-scale groove's surface and cross-section structure, created by scanning at a constant speed using a 30 W beam with a CO2 laser, was examined with a high-resolution optical microscope and the groove geometry was precisely measured. Using the data obtained from the measurements and the physical constants of the polycarbonate, mathematical modeling was made for the temperature distribution in two different directions. The Fourier Finite difference method was used to model the temperature distribution along the line on the polycarbonate surface. The experimental studies with 5 different laser beam powers were carried out again to prove the accuracy and validity of the model. Lateral temperature distribution on the surface of the material and vertical temperature distribution towards the depths of the material were investigated separately. The error rates between the proposed mathematical model and the experimental results are between 3.24 % and 8.44 %. Since the experimental results are in good agreement with the proposed model, it can be said that the proposed mathematical model is a reliable model. Moreover, the temperature distributions both in the lateral direction and vertically into the material were modeled with CFD-Computational Fluid Dynamics. The sources of the differences between the ignition, melting and glass transition temperature obtained from the CFD analysis and the actual temperature values were discussed.

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Effect of talc on the metal adhesion of laser-structured polymer parts

Fischer

Drummer

Kuhn

et al. 2018

2018 13th International Congress Molded Interconnect Devices (MID)

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Fundamentals of Laser‐Polymer Interactions and their Relevance to Polymer Metallization

Cited by 3 publications

References 138 publications

Selective Metallization of Polymers: Surface Activation of Polybutylene Terephthalate (PBT) Assisted by Picosecond Laser Pulses

Selective Metallization of Polymers: Surface Activation of Polybutylene Terephthalate (PBT) Assisted by Picosecond Laser Pulses

Mathematical Modeling and CFD Analysis with Experimental Investigation of the Geometry of the Grooves Created with CO2 Laser on the Polycarbonate Plate

Effect of talc on the metal adhesion of laser-structured polymer parts

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