Journal
OPTICS EXPRESS
Volume 26, Issue 10, Pages 13543-13548Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.013543
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Funding
- Air Force Office of Scientific Research (AFOSR) [FA9550-15-1-0321]
- Department of Energy (DOE) [B620630]
- National Science Foundation Graduate Research Fellowship [DGE-1650604]
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Demand continues to rise for custom-fabricated and engineered colloidal microparticles across a breadth of application areas. This paper demonstrates an improvement in the fabrication rate of high-resolution 3D colloidal particles by using two-photon scanning lithography within a microfluidic channel. To accomplish this, we present (1) an experimental setup that supports fast, 3D scanning by synchronizing a galvanometer, piezoelectric stage, and an acousto-optic switch, and (2) a new technique for modifying the laser's scan path to compensate for the relative motion of the rapidly-flowing photopolymer medium. The result is an instrument that allows for rapid conveyor-belt-like fabrication of colloidal objects with arbitrary 3D shapes and micron-resolution features. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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