title: A helical naphthopyran dopant for photoresponsive cholesteric liquid crystals.
abstract: The first photoresponsive cholesteric liquid crystal comprising a photoisomerizable helical naphthopyran derivative dopant and a nematic liquid crystal is reported. An unprecedented helical twisting power switching ratio of over 90% allowed us to demonstrate multi-cycle rotational motion of micro-objects by UV light irradiation.
authors.affiliation: Research Institute for Electronic Science, Hokkaido University, Kita20, Nishi10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan. tamaoki@es.hokudai.ac.jp.
authors.forename: Yuna
authors.initials: Y
authors.lastname: Kim
authors.affiliation: UMR CNRS 8180, UVSQ, Institut Lavoisier de Versailles, Université Paris-Saclay, Versailles, France.
authors.forename: Michel
authors.initials: M
authors.lastname: Frigoli
authors.affiliation: Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Vanthuyne
authors.affiliation: Research Institute for Electronic Science, Hokkaido University, Kita20, Nishi10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan. tamaoki@es.hokudai.ac.jp.
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Tamaoki