title: Instability-Assisted Direct Writing of Microstructured Fibers Featuring Sacrificial Bonds.
abstract: 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 properties.
authors.affiliation: Laboratory for Multiscale Mechanics, École Polytechnique de Montréal, C.P. 6079, succ. Centre-Ville, Montréal (Québec), H3C 3A7, Canada.
authors.forename: Renaud
authors.initials: R
authors.lastname: Passieux
authors.affiliation: Laboratory for Multiscale Mechanics, École Polytechnique de Montréal, C.P. 6079, succ. Centre-Ville, Montréal (Québec), H3C 3A7, Canada.
authors.forename: Leigh
authors.initials: L
authors.lastname: Guthrie
authors.affiliation: Laboratory for Multiscale Mechanics, École Polytechnique de Montréal, C.P. 6079, succ. Centre-Ville, Montréal (Québec), H3C 3A7, Canada.
authors.forename: Somayeh Hosseini
authors.initials: SH
authors.lastname: Rad
authors.affiliation: Laboratory for Multiscale Mechanics, École Polytechnique de Montréal, C.P. 6079, succ. Centre-Ville, Montréal (Québec), H3C 3A7, Canada.
authors.forename: Martin
authors.initials: M
authors.lastname: Lévesque
authors.affiliation: Laboratory for Multiscale Mechanics, École Polytechnique de Montréal, C.P. 6079, succ. Centre-Ville, Montréal (Québec), H3C 3A7, Canada.
authors.forename: Daniel
authors.initials: D
authors.lastname: Therriault
authors.affiliation: Laboratory for Multiscale Mechanics, École Polytechnique de Montréal, C.P. 6079, succ. Centre-Ville, Montréal (Québec), H3C 3A7, Canada.
authors.forename: Frédérick P
authors.initials: FP
authors.lastname: Gosselin
keywords: 3D printing; instability; microstructure; sacrificial bonds; toughness