Our paper on the developpement of an instability-assisted microfabrication technique base on the liquid rope coiling instability was accepted for publication in Advanced Materials.
In the figure above, featured on the back cover of Advanced Materials, a 30 μm diameter thread of poly(lactic acid) (PLA) dissolved in dichloromethane is deposited on top of the eye of a sewing needle. The deposition robot traces a straight line; the helical shape of the thread is due to the liquid rope coiling instability. This instability is used to fabricate microstructured fibers with tailored mechanical.
Preprint available here: Passieux2015-InstabilityAssistedDirectWrite-AdvMat