Learning to write with the fluid rope trick

Learning to write with the fluid rope trick. Gaurav Chaudhary, Stephanie Christ, A. John Hart and L. Mahadevan, Soft Matter. 23 October 2023
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Abstract

The rapid evolution of three-dimensional (3D) printing technology has enabled new manufacturing capabilities1,2 and allowed for the creation of complex patterns via the additive deposition of complex materials through a computer-controlled nozzle. However, the ultimate limits on print quality are imposed by the rheodynamics of the printed material that is a function of material rheology and the ability to design robust print paths for the nozzle. Defects in printing typically arise in non-uniformly extruded/deposited material and instabilities such as folding and coiling of fluid jets.3 A simple protocol to prevent these defects follows by forcing the nozzle trajectory to exactly mimic the target print pattern from a very small height offset.