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Optical Engineering

Augmentation of direct laser writing fabrication throughput for three-dimensional structures by varying focusing conditions
Author(s): Linas Jonušauskas; Sima Rekštytė; Mangirdas Malinauskas
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Paper Abstract

We propose a laser fabrication approach for single monolith structure by varying beam focusing lenses (NA1=1.4 and NA2=0.45). With this, we show great improvement of the manufacturing throughput while keeping the desired spatial resolution and feature definition. To quantitatively evaluate its efficiency, we theoretically calculate and experimentally measure the polymerized volume using different focusing conditions and show that the augmentation can reach more than sevenfold. Based on this, sample structures of hybrid organic-inorganic SZ2080 and hydrogel polyethylene (glycol) diacrylate photopolymers were successfully manufactured. These three-dimensional structures included prototype scaffolds for cell growth and microfluidic components. Their quality was assessed and possible difficulties as well as limitations that arose were discussed. The new structures were compared to alternative direct laser writing throughput increasing techniques. Finally, we discussed potential applications in manufacturing various elements for regenerative medicine and microfluidics.

Paper Details

Date Published: 17 December 2014
PDF: 10 pages
Opt. Eng. 53(12) 125102 doi: 10.1117/1.OE.53.12.125102
Published in: Optical Engineering Volume 53, Issue 12
Show Author Affiliations
Linas Jonušauskas, Vilnius Univ. (Lithuania)
Sima Rekštytė, Vilnius Univ. (Lithuania)
Mangirdas Malinauskas, Vilnius Univ. (Lithuania)

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