title: Coherent kinetic control over crystal orientation in macroscopic ensembles of polymer nanorods and nanotubes.
abstract: We show that the crystal orientation in polymer nanotubes and nanorods inside porous templates is controlled by the kinetics of nucleation and growth under 2D confinement. Two clear limiting cases are identified: In separated nanostructures, any crystal orientation allowing the growth of lamellar crystals along the pores appears statistically. If a bulklike surface film connects the nanostructures, macroscopic arrays with uniform crystal orientation are obtained, in which the dominant growth direction of the crystals is aligned with the long axes of the pores of the template.
authors.affiliation: Max Planck Institute of Microstructure Physics, Weinberg 2, D-6120 Halle, Germany. steinhart@mpi-halle.de
authors.forename: Martin
authors.initials: M
authors.lastname: Steinhart
authors.forename: Petra
authors.initials: P
authors.lastname: Göring
authors.forename: Haissam
authors.initials: H
authors.lastname: Dernaika
authors.forename: Munusamy
authors.initials: M
authors.lastname: Prabhukaran
authors.forename: Ulrich
authors.initials: U
authors.lastname: Gösele
authors.forename: Elke
authors.initials: E
authors.lastname: Hempel
authors.forename: Thomas
authors.initials: T
authors.lastname: Thurn-Albrecht
mesh_terms: D003460:Crystallization; D007700:Kinetics; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology; D043942:Nanotubes / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011145:Polyvinyls / Q000737:chemistry; D005465:Fluorocarbon Polymers
chemical_list: D011108:Polymers; D011145:Polyvinyls; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers