Augmentation of direct laser writing fabrication throughput for three-dimensional structures by varying focusing conditions

Linas Jonušauskas; Sima Rekštytė; Mangirdas Malinauskas

doi:10.1117/1.OE.53.12.125102

17 December 2014 Augmentation of direct laser writing fabrication throughput for three-dimensional structures by varying focusing conditions

Linas Jonušauskas, Sima Rekštytė, Mangirdas Malinauskas

Author Affiliations +

Optical Engineering, Vol. 53, Issue 12, 125102 (December 2014). https://doi.org/10.1117/1.OE.53.12.125102

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.

Citation Download Citation

Linas Jonušauskas, Sima Rekštytė, and Mangirdas Malinauskas "Augmentation of direct laser writing fabrication throughput for three-dimensional structures by varying focusing conditions," Optical Engineering 53(12), 125102 (17 December 2014). https://doi.org/10.1117/1.OE.53.12.125102

Published: 17 December 2014

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