title: Chiral transformation: from single nanowire to double helix.
abstract: We report a new type of water-soluble ultrathin Au-Ag alloy nanowire (NW), which exhibits unprecedented behavior in a colloidal solution. Upon growth of a thin metal (Pd, Pt, or Au) layer, the NW winds around itself to give a metallic double helix. We propose that the winding originates from the chirality within the as-synthesized Au-Ag NWs, which were induced to untwist upon metal deposition.
authors.affiliation: Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 637371.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Qingxiao
authors.initials: Q
authors.lastname: Wang
authors.forename: Hang
authors.initials: H
authors.lastname: Sun
authors.forename: Weiqing
authors.initials: W
authors.lastname: Zhang
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.forename: Yawen
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiaoshuang
authors.initials: X
authors.lastname: Shen
authors.forename: Yu
authors.initials: Y
authors.lastname: Han
authors.forename: Xianmao
authors.initials: X
authors.lastname: Lu
authors.forename: Hongyu
authors.initials: H
authors.lastname: Chen