TY - JOUR
T1 - Mechanism of elongation of gold or silver nanoparticles in silica by irradiation with swift heavy ions
AU - Awazu, Koichi
AU - Wang, Xiamin
AU - Fujimaki, Makoto
AU - Tominaga, Junji
AU - Fujii, Shinji
AU - Aiba, Hirohiko
AU - Ohki, Yoshimichi
AU - Komatsubara, Tetsuro
N1 - Funding Information:
This study was financially supported by the Budget for Nuclear Research of the Ministry of Education, Culture, Sports, Science, and Technology, based on screening and counseling by the Atomic Energy Commission.
PY - 2009/3
Y1 - 2009/3
N2 - It has been reported that elongated Au nanoparticles oriented parallel to one another can be synthesized in SiO2 by ion irradiation. Our aim was to elucidate the mechanism of this elongation. We prepared Au and Ag nanoparticles with a diameter of 20 nm in an SiO2 matrix. It was found that Au nanoparticles showed greater elongated with a higher flux of ion beam and with thicker SiO2 films. In contrast, Ag nanoparticles split into two or more shorter nanorods aligned end to end in the direction parallel to the ion beam. These experimental results are discussed in the framework of a thermal spike model of Au and Ag nanorods embedded in SiO2. The lattice temperature exceeds the melting temperatures of SiO2, Au and Ag for 100 ns after one 110 MeV Br10+ ion has passed through the middle of an Au or Ag nanorod. Crown
AB - It has been reported that elongated Au nanoparticles oriented parallel to one another can be synthesized in SiO2 by ion irradiation. Our aim was to elucidate the mechanism of this elongation. We prepared Au and Ag nanoparticles with a diameter of 20 nm in an SiO2 matrix. It was found that Au nanoparticles showed greater elongated with a higher flux of ion beam and with thicker SiO2 films. In contrast, Ag nanoparticles split into two or more shorter nanorods aligned end to end in the direction parallel to the ion beam. These experimental results are discussed in the framework of a thermal spike model of Au and Ag nanorods embedded in SiO2. The lattice temperature exceeds the melting temperatures of SiO2, Au and Ag for 100 ns after one 110 MeV Br10+ ion has passed through the middle of an Au or Ag nanorod. Crown
KW - Au nanoparticles
KW - Nanofabrication
KW - Silica glass
KW - Swift heavy ion
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U2 - 10.1016/j.nimb.2009.02.027
DO - 10.1016/j.nimb.2009.02.027
M3 - Article
AN - SCOPUS:69749118283
SN - 0168-583X
VL - 267
SP - 941
EP - 943
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 6
ER -