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3D microfabrication of thermoset polymer PDMS using laser-induced bubble

Wednesday (24.06.2020)
11:23 - 11:26 Room 1
Part of:
- Poster Processing of Functional Texturing on Micro-fibers by Laser Induced Periodic Surface Structures 1 Prof. Masaki Yamaguchi
- Poster 3D microfabrication of thermoset polymer PDMS using laser-induced bubble 1 Prof. Yasutaka Hanada
- Poster *student* Laser-Peening with solid state medium as plasma confinement layer 1 Yuki Sugimoto
- Poster *student* Numerical Simulation and Test Experiments of Selective Laser Thermoregulation for Accelerated Degradation Test of SiC/SiC CMC 1 Hayato Koshiji
- Poster *student* Laser peening of sprayed ceramics film 1 Yuya Yasuyoshi
- Poster *student* Influence of thickness of plasma confinement layer on laser peening using near infrared laser 1 Hikaru Hirata
- Poster *student* Green femtosecond laser direct writing using reduction of glyoxylic acid Co/Ni complexes 1 Hikaru Nakatani
- Poster Ultrafast pulse GHz burst mode laser ablation for efficient surface microprocessing 1 Ph.D. Francesc Caballero Lucas
- Poster *student* Development of hybrid laser system with blue diode laser and single mode fiber laser for welding of pure copper 1 Shumpei Fujio
- Poster *student* High stability of frequency and robustness of noise-like pulse fiber laser 1 Hitoshi Nakano
- Poster *student* Broadband pulsed fiber laser for suppression of stimulated Brillouin scattering 1 Tetsuya Yamazaki
- Poster Aligned growth of ZnO nanowires on diamond by nanoparticle-assisted pulsed laser deposition 1 Dr. Daisuke Nakamura
- Poster *student* Spectrometer-based Ultrashort Pulsed Laser Selective Microstructuring of Ni/NiCr Multi-layer Coatings 1 Chao He
- Poster *student* Femto- and nanosecond laser surface modification of stainless steel 1 Dipl.-Volkswirt Paulina Dzienny
- Poster Laser writing of waveguides in porous glass for small molecules detection 1 Dr. Roman Zakoldaev
- Poster *student* Homogeneous intensity within the Rayleigh length and enhanced depth of focus for Gaussian beams 1 Christian Bischoff
Session Chair

Session PS: Poster Session 01
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Topic PS: Poster Session

Polydimethylsiloxane (PDMS) is a versatile material that has been widely used in the fields of biology and tissue engineering. This polymer has numerous useful characteristics including a high degree of transparency, resistance to various chemicals and minimal cost. For these reasons, PDMS has been employed in the construction of microfluidic devices since Whitesides et al. first used PDMS as a microfluidic chip material in 1998. A soft-lithography technique originally developed by the semiconductor industry has been used to pattern the surfaces of substrates in order to fabricate complex microfluidic devices made of PDMS. However, this process involves multiple steps and requires access to advanced clean room facilities, which are typically costly. On the other hand, the direct laser writing of PDMS using conventional nanosecond lasers via single-photon absorption is an attractive alternative method that allows rapid prototyping. However, the majority of conventional laser processing techniques allow only low fabrication rates (typically less than a few μm/pulse) due to the use of solid transparent polymers as substrates.

In the meanwhile, we have developed the surface microfabrication technique of PDMS using laser-induced bubbles generated by the conventional ns laser, referred to as microFLIB (microFabrication using Laser-Induced Bubble). In the previous study, we demonstrated the high-quality and high-speed microfluidic fabrication of the PDMS using the microFLIB and additionally, conducted the selective metal plating only on the fabricated areas, whereas the technique was limited to the surface micromachining. Therefore, in this presentation, we attempted the 3D microfabrication of the PDMS using the microFLIB.

Prof. Yasutaka Hanada
Hirosaki University


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