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Multi-scale, multi-depth lithography using optical fibers for microfluidic applications

  • Taichi Ibi
  • Eisuke Komada
  • Taichi Furukawa
  • Shoji MaruoEmail author
Research Paper

Abstract

This paper proposes and demonstrates a method for multi-scale, multi-depth three-dimensional (3D) lithography. In this method, 3D molds for replicating microchannels are fabricated by passing a non-focused laser beam through an optical fiber, whose tip is immersed in a droplet of photopolymer. Line width is adjustable from 1 to 980 µm using eight kinds of optical fibers with different core diameters. The height of line drawing can be controlled by adjusting the distance between the tip of the optical fiber and a substrate. The surface roughness (Ra, Rz) of a single line and plane was evaluated. The method was employed to fabricate a 3D mold of a microchannel containing tandem chambers, which was then successfully replicated in PDMS. Multi-scale, multi-depth 3D lithography can provide a simple, flexible tool for producing PDMS microfluidic devices.

Keywords

3D printing Multi-scale Optical fiber Micro channel PDMS Molding 

Notes

Acknowledgements

This work was supported by the Cross-Ministerial Strategic Innovation Promotion Program (SIP). The liquid photopolymer (TSR-883) used in this research was provided by CMET Inc.

Compliance with ethical standards

Conflict of interest

There are no conflicts of interest to declare.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Graduate School of EngineeringYokohama National UniversityYokohamaJapan
  2. 2.Faculty of EngineeringYokohama National UniversityYokohamaJapan

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