title: Hidden chirality in superficially racemic patchy silver films.
abstract: Chiral patchy particle films where morphological enantiomers exist in equal proportion are found to have significant circular dichroism. It is determined that the rotation direction during glancing angle deposition breaks the racemic symmetry, resulting in a distribution of material which enhances the chirality of one set of enantiomers relative to the other. Microscopic analysis and geometric chirality calculations reveal that the chirality of the bulk film results from incomplete cancellations of even stronger local chiralities.
authors.affiliation: Department of Physics and Astronomy, and Nanoscale Science and Engineering Center, University of Georgia , Athens, Georgia 30602, United States.
authors.forename: George K
authors.initials: GK
authors.lastname: Larsen
authors.forename: Yizhuo
authors.initials: Y
authors.lastname: He
authors.forename: Whitney
authors.initials: W
authors.lastname: Ingram
authors.forename: Yiping
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D002942:Circular Dichroism; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology; D012834:Silver / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D012834:Silver