The fabrication of aligned pairs of gold nanorods in SiO2 films by ion irradiation.
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.
Awazu
Koichi
K
CAN-FOR, National Institute of Advanced Science and Technology, 1-1-1 Higashi Tsukuba 305-8562, Japan. k.awazu@aist.go.jp
Wang
Xiaomin
X
Komatsubara
Tetsuro
T
Watanabe
Jun
J
Matsumoto
Yuki
Y
Warisawa
Shin'ichi
S
Ishihara
Sunao
S