6533b7dafe1ef96bd126f562
RESEARCH PRODUCT
Curvature as a Guiding Field for Patterns in Thin Block Copolymer Films
Aldo Daniel PezzuttiGiang Thi VuRichard A. RegisterFriederike SchmidLeopoldo Raimundo GomezAnabella Angela AbateDaniel A. Vegasubject
Materials scienceField (physics)Ciencias FísicasGeneral Physics and AstronomyFOS: Physical sciences02 engineering and technologyCondensed Matter - Soft Condensed Matter010402 general chemistryCurvature01 natural sciencesTopological defect//purl.org/becyt/ford/1 [https]Orientation (geometry)PerpendicularDewettingThin filmCondensed matter physics//purl.org/becyt/ford/1.3 [https]021001 nanoscience & nanotechnologyCOPOLYMERSSymmetry (physics)0104 chemical sciencesBUCKLINGSoft Condensed Matter (cond-mat.soft)TOPOLOGICAL DEFECTS0210 nano-technologyCIENCIAS NATURALES Y EXACTASFísica de los Materiales Condensadosdescription
Experimental data on thin films of cylinder-forming block copolymers (BC)—free-standing BCmembranes as well as supported BC films—strongly suggest that the local orientation of the BC patternsis coupled to the geometry in which the patterns are embedded. We analyze this phenomenon using generalsymmetry considerations and numerical self-consistent field studies of curved BC films in cylindricalgeometry. The stability of the films against curvature-induced dewetting is also analyzed. In goodagreement with experiments, we find that the BC cylinders tend to align along the direction of curvature athigh curvatures. At low curvatures, we identify a transition from perpendicular to parallel alignment insupported films, which is absent in free-standing membranes. Hence both experiments and theory show thatcurvature can be used to manipulate and align BC patterns. Fil: Vu, Giang Thi. Johannes Gutenberg Universitat Mainz; Alemania Fil: Abate, Anabella Angela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Gomez, Leopoldo Raimundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Pezzutti, Aldo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Register, Richard A.. University of Princeton; Estados Unidos Fil: Vega, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina Fil: Schmid, Friederike. Johannes Gutenberg Universitat Mainz; Alemania
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-08-21 |