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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 9 — Sep. 1, 2013
  • pp: 1428–1437

Molding topologically-complex 3D polymer microstructures from femtosecond laser machined glass

Allison Schaap and Yves Bellouard  »View Author Affiliations

Optical Materials Express, Vol. 3, Issue 9, pp. 1428-1437 (2013)

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The fabrication of complex, three-dimensional microscale shapes that can be replicated over large surfaces is an ongoing challenge, albeit one with a wide range of possible applications such as engineered surfaces with tuned wetting properties, scaffolds for cell studies, or surfaces with tailored optical properties. In this work, we use a two-step femtosecond laser direct-write technique and wet-etching process to fabricate monolithic glass micromolds with complex three-dimensional surface topologies, and demonstrate the replication of these structures in a soft polymer (polydimethylsiloxane, PDMS). To estimate the forces experienced during the demolding for one representative structure, we use a combination of two models – a simple linear elastic model and a numerical hyperelastic model. These models are used to support the high experimental success rates of the demolding process observed, despite the high strain induced in the material during demolding. Since the process used is scalable, this work opens new avenues for low-cost fabrication of surfaces having complex microscale patterns with three-dimensional geometries.

© 2013 OSA

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(140.7090) Lasers and laser optics : Ultrafast lasers
(160.2750) Materials : Glass and other amorphous materials
(160.5470) Materials : Polymers
(220.4000) Optical design and fabrication : Microstructure fabrication
(220.4610) Optical design and fabrication : Optical fabrication

ToC Category:
Laser Materials Processing

Original Manuscript: June 25, 2013
Revised Manuscript: July 20, 2013
Manuscript Accepted: August 3, 2013
Published: August 14, 2013

Virtual Issues
Ultrafast Laser Modification of Materials (2013) Optical Materials Express

Allison Schaap and Yves Bellouard, "Molding topologically-complex 3D polymer microstructures from femtosecond laser machined glass," Opt. Mater. Express 3, 1428-1437 (2013)

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