title: Double-helical silicon microtubes.
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan. morito@tagen.tohoku.ac.jp
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Morito
authors.forename: Hisanori
authors.initials: H
authors.lastname: Yamane