Scanning two-photon continuous flow lithography for synthesis of high-resolution 3D microparticles

Published on 2018-05-10T22:41:21Z (GMT) by
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 in a microchannel 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.

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Hopkins, Jonathan; Shaw, Lucas; Chizari, Samira; Shusteff, Maxim; Naghsh-Nilchi, Hamed; Carlo, Dino Di (2018): Scanning two-photon continuous flow lithography for synthesis of high-resolution 3D microparticles. The Optical Society. Collection.