Selective Laser Pyrolytic Micropatterning of Stretched Elastomeric Polymer Surfaces

Hwang, Eunseung; Lee, Young‐Geun; Lim, Jong Hyun; Kim, Young-Chan; Qu, Weihao; Min, Koungjun; Lee, Won Chul; Hong, Sukjoon

doi:10.1007/s40684-020-00292-6

Cited by 4 publications

(1 citation statement)

References 60 publications

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“…Although research on microdevice fabrication has been continued for a few decades [ 23 ], there are several limitations in fabricating G-P-G structures through the conventional PDMS patterning techniques. First, the most widely used photolithography-based mold replica method is not suitable for frequent design modification for fast prototyping, essential at the laboratory scale because it is a complicated, time-consuming, and expensive process [ 24 ]. For the elimination of transferring PDMS film process, the main drawback of the mold-replica-based method, caramel sacrificial mold has been proposed.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Perforated PDMS Microchannel by Successive Laser Pyrolysis

Min

Lim

et al. 2021

Materials

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Poly(dimethylsiloxane) has attracted much attention in soft lithography and has also been preferred as a platform for a photochemical reaction, thanks to its outstanding characteristics including ease of use, nontoxicity, and high optical transmittance. However, the low stiffness of PDMS, an obvious advantage for soft lithography, is often treated as an obstacle in conducting precise handling or maintaining its structural integrity. For these reasons, a Glass-PDMS-Glass structure has emerged as a straightforward alternative. Nevertheless, several challenges are remaining in fabricating Glass-PDMS-Glass structure through the conventional PDMS patterning techniques such as photolithography and etching processes for master mold. The complicated techniques are not suitable for frequent design modifications in research-oriented fields, and fabrication of perforated PDMS is hard to achieve using mold replication. Herein, we utilize the successive laser pyrolysis technique to pattern thin-film PDMS for microfluidic applications. The direct use of thin film at the glass surface prevents the difficulties of thin-film handling. Through the precise control of photothermal pyrolysis phenomena, we provide a facile fabrication process for perforated PDMS microchannels. In the final demonstration, the laminar flow has been successfully created owing to the smooth surface profile. We envision further applications using rapid prototyping of the perforated PDMS microchannel.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Perforated PDMS Microchannel by Successive Laser Pyrolysis

Min

Lim

et al. 2021

Materials

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Producing Micro-Power with Microfluidic Enzymatic Biofuel Cells: A Comprehensive Review

Khan

Tanveer²,

Park³

et al. 2022

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Green Manufacturing of Electrically-Tunable Smart Light-Weight Planar Optics: A Review

Yang,

Lee,

Kang

et al. 2024

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Evolving demands for compact, light-weight, and versatile optical systems across various industries require the facile integration of planar diffractive optics. For the manufacturing of diffractive optics, green manufacturing becomes the prerequisite with timely considerations of Environmental, Social, and Governance (ESG). Conventional manufacturing processes such as semiconductor lithography or nano /micro imprinting utilize a large amount of harmful chemicals. Meanwhile, direct laser writing emerges as one of the key solution candidates, offering clear advantages over others, especially in terms of eco-friendliness due to the simple manufacturing process with less chemical usage. In this comprehensive review, we present recent advances in the analytical design, green manufacturing of electrically tunable smart light-weight planar optics, and their promising applications in space optics, photovoltaics, and optical imaging, highlighting the necessity for tunability in focal length, aberration, transparency, and beam propagation direction. Various types of electrically tunable diffractive optical elements utilizing active modulation of refractive index, geometrical shape, and bandgap have been discussed. Finally, this review concludes by proposing the integration of ultra-thin and light-weight diffractive optics presenting potential applications in micro-electronics, biomedical imaging, space exploration, and extended reality.

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Selective Laser Pyrolytic Micropatterning of Stretched Elastomeric Polymer Surfaces

Cited by 4 publications

References 60 publications

Fabrication of Perforated PDMS Microchannel by Successive Laser Pyrolysis

Fabrication of Perforated PDMS Microchannel by Successive Laser Pyrolysis

Producing Micro-Power with Microfluidic Enzymatic Biofuel Cells: A Comprehensive Review

Green Manufacturing of Electrically-Tunable Smart Light-Weight Planar Optics: A Review

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