Selective metallic coating of 3D-printed microstructures on flexible substrates

Huang, Kuan-Chieh; Tsai, Shang-Chen; Lee, Yu-Kuan; Yuan, Cheng-Kai; Chang, Yu-Ching; Chiu, Hsien-Lung; Chung, Tien-Tung; Liao, Ying‐Chih

doi:10.1039/c7ra11171a

Cited by 14 publications

(11 citation statements)

References 40 publications

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“…These resins, called IP Photoresins, can be used to fabricate several technological devices, such as optical elements for the biological scaffolds. Other commercial matrices, such as Ormocer ® and Ormocomp ® , have been used to sculpt devices for photonics, optoelectronics, and biological areas [ 48 , 64 , 65 ]. However, many groups have developed their own samples, directing it to the desired application.…”

Section: Two-photon Polymerization (Tpp) Fundamentalsmentioning

confidence: 99%

“…The device functionalization also can be performed after the complete laser fabrication procedure [ 65 , 90 ]. Figure 8 shows 3D metallic structures fabricated in a large area by TPP, using for this purpose a microlenses array that allows the fabrication of hundreds of devices simultaneously [ 90 ].…”

Section: Devices Fabricated Via Tpp: General Applicationsmentioning

confidence: 99%

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Two-Photon Polymerization: Functionalized Microstructures, Micro-Resonators, and Bio-Scaffolds

et al. 2021

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The direct laser writing technique based on two-photon polymerization (TPP) has evolved considerably over the past two decades. Its remarkable characteristics, such as 3D capability, sub-diffraction resolution, material flexibility, and gentle processing conditions, have made it suitable for several applications in photonics and biosciences. In this review, we present an overview of the progress of TPP towards the fabrication of functionalized microstructures, whispering gallery mode (WGM) microresonators, and microenvironments for culturing microorganisms. We also describe the key physical-chemical fundamentals underlying the technique, the typical experimental setups, and the different materials employed for TPP.

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Section: Two-photon Polymerization (Tpp) Fundamentalsmentioning

confidence: 99%

Section: Devices Fabricated Via Tpp: General Applicationsmentioning

confidence: 99%

Two-Photon Polymerization: Functionalized Microstructures, Micro-Resonators, and Bio-Scaffolds

et al. 2021

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“…An activation-sensitization pretreatment is required prior to performing ELP, and the necessity has been exploited to achieve patterned plating. The most straightforward approach is to coarsen specific regions on the material surface by creating microstructures. , It takes advantage of the change in the capacity of the roughened surfaces to adsorb activating/sensitizing Pd catalyst, which induces subsequent ELP reaction. Although selective metallization can be achieved in this manner, the resulting accuracy and resolution are still not satisfactory.…”

Section: Introductionmentioning

confidence: 99%

New Metal–Plastic Hybrid Additive Manufacturing for Precise Fabrication of Arbitrary Metal Patterns on External and Even Internal Surfaces of 3D Plastic Structures

Song

Cui

Tao

et al. 2022

ACS Appl. Mater. Interfaces

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Constructing precise metal patterns on complex three-dimensional (3D) plastic parts allows the fabrication of functional devices for advanced applications. However, it is currently expensive and requires complex processes. This study demonstrates a process for the fabrication of 3D metal–plastic composite structures with arbitrarily complex shapes. A light-cured resin is modified to prepare the active precursor allowing subsequent electroless plating (ELP). A multimaterial digital light processing 3D printer was newly developed to fabricate the parts containing regions made of either standard resin or active precursor nested within each other. Selective 3D ELP processing of such parts provided various metal–plastic composite parts having complicated hollow structures with specific topological relationships with the resolution of 40 μm. Using this technique, 3D devices that cannot be manufactured by traditional methods are possible, and metal patterns can be produced inside plastic parts as a means of further miniaturizing electronics. The proposed method can also generate metal coatings exhibiting improved adhesion of metal to substrate. Finally, several sensors composed of different functional materials and specific metal patterns were designed and fabricated. The present results demonstrate the viability of the proposed method and suggest potential applications in the fields of 3D electronics, wearable devices, and sensors.

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“…Thus, ELP is a cost-effective and scalable approach for metal deposition onto 3D printed objects. Previous studies have demonstrated the fabrication of conductive metal patterns or layers on 3D printed objects using ELP. ,,− For example, Yang et al fabricated various metallic structures via polyelectrolyte brush-integrated 3D printed structures and a subsequent ELP process . Magdassi et al utilized a unique copper complex ink as a catalytic seed for ELP and fabricated antennas on 3D printed commercial polymers .…”

Section: Introductionmentioning

confidence: 99%

Photocurable Three-Dimensional Printing Resin to Enable Laser-Assisted Selective Electroless Metallization for Customized Electronics

Lee

Kim

Park

et al. 2021

ACS Appl. Polym. Mater.

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Integrating conductive metal patterns directly on three-dimensional (3D) printed polymers is crucial for realizing diverse 3D printing applications. In this study, we developed photocurable 3D printing resins incorporating ZnO nanoparticles (3DP-ZnO) for 3D printed structures, which enabled subsequent copper (Cu) electroless plating (ELP). ZnO nanoparticles (NPs) were incorporated in the resin as catalytic seeds for ELP, and Cu patterns were precisely fabricated on 3DP-ZnO after 355 nm UV laser activation and Cu ELP. The amount of ZnO NPs within 3DP-ZnO was precisely controlled to balance the photocuring behavior and ELP efficiency. The patterned Cu showed good electrical performance with an electrical resistivity of 6.47 ± 0.22 × 10 −6 Ω•cm. Furthermore, the strong adhesion between the Cu layers and surface of the 3D printed structure was confirmed via an adhesion test. This study offers a universal and cost-effective approach for extending 3D printing applications and using 3D printing technology to create practical tools for customized electronic devices.

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Selective metallic coating of 3D-printed microstructures on flexible substrates

Abstract: In this work, a simple method was developed to fabricate micron scale three-dimensional (3D) conductive objects on a flexible PDMS substrate.

Cited by 14 publications

References 40 publications

Two-Photon Polymerization: Functionalized Microstructures, Micro-Resonators, and Bio-Scaffolds

Two-Photon Polymerization: Functionalized Microstructures, Micro-Resonators, and Bio-Scaffolds

New Metal–Plastic Hybrid Additive Manufacturing for Precise Fabrication of Arbitrary Metal Patterns on External and Even Internal Surfaces of 3D Plastic Structures

Photocurable Three-Dimensional Printing Resin to Enable Laser-Assisted Selective Electroless Metallization for Customized Electronics

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