IFISUR   23398
INSTITUTO DE FISICA DEL SUR
Unidad Ejecutora - UE
artículos
Título:
Wrinkles and splay conspire to give positive disclinations negative curvature
Autor/es:
MATSUMOTO ELISABETTA; DANIEL A. VEGA; PEZZUTTI ALDO D; GARCIA NICOLAS; PAUL M. CHAIKIN; RICHARD A. REGISTER
Revista:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Editorial:
NATL ACAD SCIENCES
Referencias:
Lugar: Washington DC, USA; Año: 2015 vol. 112 p. 12639 - 12644
ISSN:
0027-8424
Resumen:
Recently, there has been renewed interest in the coupling between geometry and topological defects in crystalline and striped systems. Standard lore dictates that positive disclinations are associated with positive Gaussian curvature, whereas negative disclinations give rise to negative curvature. Here, we present a diblock copolymer system exhibiting a striped columnar phase that preferentially forms wrinkles perpendicular to the underlying stripes. In free-standing films this wrinkling behavior induces negative Gaussian curvature to form in the vicinity of positive disclinations.