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Article

Spatio-Temporal Proximity Characteristics in 3D μ-Printing via Multi-Photon Absorption

1
Physics Department and Research Center OPTIMAS, University of Kaiserslautern, 67663 Kaiserslautern, Germany
2
Fraunhofer-Institute for Physical Measurement Techniques (IPM), 67663 Kaiserslautern, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Shin-ichi Yusa
Polymers 2016, 8(8), 297; https://doi.org/10.3390/polym8080297
Received: 15 June 2016 / Revised: 29 July 2016 / Accepted: 3 August 2016 / Published: 10 August 2016
(This article belongs to the Special Issue Three-Dimensional Structures: Fabrication and Application)
One of the major challenges in high-resolution μ-printing is the cross-talk between features written in close proximity—the proximity effect. This effect prevents, e.g., gratings with periods below a few hundred nanometers. Surprisingly, the dependence of this effect on space and time has not thoroughly been investigated. Here, we present a spatial-light-modulator based method to dynamically measure the strength of the proximity effect on length and timescales typical to μ-printing. The proximity strength is compared in various photo resists. The results indicate that molecular diffusion strongly contributes to the proximity effect. View Full-Text
Keywords: 3D μ-printing; direct-laser-writing; photo resist; polymerization 3D μ-printing; direct-laser-writing; photo resist; polymerization
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MDPI and ACS Style

Waller, E.H.; Von Freymann, G. Spatio-Temporal Proximity Characteristics in 3D μ-Printing via Multi-Photon Absorption. Polymers 2016, 8, 297. https://doi.org/10.3390/polym8080297

AMA Style

Waller EH, Von Freymann G. Spatio-Temporal Proximity Characteristics in 3D μ-Printing via Multi-Photon Absorption. Polymers. 2016; 8(8):297. https://doi.org/10.3390/polym8080297

Chicago/Turabian Style

Waller, Erik H., and Georg Von Freymann. 2016. "Spatio-Temporal Proximity Characteristics in 3D μ-Printing via Multi-Photon Absorption" Polymers 8, no. 8: 297. https://doi.org/10.3390/polym8080297

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