title: The fabrication of aligned pairs of gold nanorods in SiO2 films by ion irradiation.
abstract: Pairs of gold nanodisks 40 or 70 nm in diameter were fabricated in silica by electron-beam lithography. On irradiation by 110 MeV Br(10+) ions, the nanodisks elongated to form nanorods; elongation occurred in the direction of propagation of the ions. The aspect ratios of the Au nanorods increased with increasing ion-flux density or fluence and with decreasing diameter of the nanodisks. The elongation mechanism can be explained in terms of a thermal spike model.
authors.affiliation: CAN-FOR, National Institute of Advanced Science and Technology, 1-1-1 Higashi Tsukuba 305-8562, Japan. k.awazu@aist.go.jp
authors.forename: Koichi
authors.initials: K
authors.lastname: Awazu
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Wang
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Komatsubara
authors.forename: Jun
authors.initials: J
authors.lastname: Watanabe
authors.forename: Yuki
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: Shin'ichi
authors.initials: S
authors.lastname: Warisawa
authors.forename: Sunao
authors.initials: S
authors.lastname: Ishihara