Fluid jets and their breakup or stabilization. A) Photograph and schematic of a water jet that undergoes perturbations (red arrow) as part of Plateau–Rayleigh instabilities and prior to jet breakup. B) Photograph of 49 jets at different stages of Plateau–Rayleigh instabilities. Photographs of “liquid rope” coiling of C) honey and D) molten glass landing on a static collector with E) showing a render of how such fluid columns buckle and land when direct‐written. Photograph of F) a floating water bridge, where deionized water is suspended between two beakers using the application of a voltage, and G) from an infrared camera of a PCL MEW jet landing on a stationary collector and H) a photograph of a MEW jet, showing how the applied voltage can prevent this jet from undergoing Plateau–Rayleigh instabilities, even at low flow rates. A,B) Reproduced with permission.[
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] Copyright 2010, AIP Publishing. C) Reproduced under the terms of the Creative Commons Agreement 4.0 (CC BY).[
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] Copyright 2018, the Authors. Published by MDPI. D) Reproduced with permission.[
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] Copyright 2017, The Royal Society. E) Reprinted figure with permission.[
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] Copyright 2015, American Physical Society. F) Reproduced with permission.[
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] Copyright 2010, AIP Publishing. G) Previously unpublished image provided by Mr. Andrei Hrynevich. H) Reproduced with permission.[
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] Copyright 2019, IOP Publishing.