Mostrar el registro sencillo del ítem

dc.contributor.author
Schneider, Ludwig  
dc.contributor.author
Lichtenberg, Georg  
dc.contributor.author
Vega, Daniel Alberto  
dc.contributor.author
Müller, Marcus  
dc.date.available
2021-09-22T18:32:44Z  
dc.date.issued
2020-10-20  
dc.identifier.citation
Schneider, Ludwig; Lichtenberg, Georg; Vega, Daniel Alberto; Müller, Marcus; Symmetric diblock copolymers in cylindrical confinement: A way to chiral morphologies?; American Chemical Society; ACS Applied Materials & Interfaces; 12; 44; 20-10-2020; 50077-50095  
dc.identifier.issn
1944-8244  
dc.identifier.uri
http://hdl.handle.net/11336/141212  
dc.description.abstract
We investigate the confinement-induced formation and stability of helix morphologies in lamella-forming AB diblock copolymers via large-scale, particle-based, single-chain-in-mean-field simulations. Such helix structures are rarely observed in bulk or thin films. Structure formation is induced by quenching incompatibility, χN, from a disordered morphology. If the surfaces of the cylindrical confinement do not prefer one component over the other, we observe that stacked lamellae, with their normals along the cylinder axis, are the preferred morphology. Kinetically, this morphology initially forms close to the cylinder surface, whereas the spontaneous, spinodal microphase separation in the cylinder?s interior gives rise to a microemulsion-like morphology, riddled with defects and no directional order. Subsequently, the ordered morphology on the cylinder surface progresses inward, pervading the entire volume. In case that the cylindrical pore is only partially filled, the additional confinement along the cylinder axis generally gives rise to incommensurability between the equilibrium spacing of stacked lamellae and the cylinder height. To accommodate this mismatch, the lamella normals will tilt away from the cylinder axis and generate helices of lamellae on the surface of the cylinder. Again, this order progresses from the cylinder surface inward, generating a chiral morphology. Because the spacing between the internal AB interfaces decreases upon approaching the helix center, the concomitant stress results in a decrease in the number of lamellae and the formation of unique dislocation defects. This type of chiral defect morphology is reproducibly formed by the kinetics of structure formation in partly filled cylindrical pores with nonpreferential surfaces and may find applications in photonic applications.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Chemical Society  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
CHIRALITY  
dc.subject
CONFINEMENT  
dc.subject
DIBLOCK COPOLYMERS  
dc.subject
KINETICS  
dc.subject
MICROPHASE SEPARATION  
dc.subject
SIMULATION  
dc.subject.classification
Nano-materiales  
dc.subject.classification
Nanotecnología  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Symmetric diblock copolymers in cylindrical confinement: A way to chiral morphologies?  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-01-18T14:11:47Z  
dc.journal.volume
12  
dc.journal.number
44  
dc.journal.pagination
50077-50095  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Washington D. C.  
dc.description.fil
Fil: Schneider, Ludwig. Universität Göttingen; Alemania  
dc.description.fil
Fil: Lichtenberg, Georg. Universität Göttingen; Alemania  
dc.description.fil
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  
dc.description.fil
Fil: Müller, Marcus. Universität Göttingen; Alemania  
dc.journal.title
ACS Applied Materials & Interfaces  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acsami.0c16987  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acsami.0c16987