TY - JOUR
T1 - Elongation of gold nanoparticles in silica glass by irradiation with swift heavy ions
AU - Awazu, Koichi
AU - Wang, Xiaomin
AU - Fijimaki, Makoto
AU - Tominaga, Junji
AU - Aiba, Hirohiko
AU - Ohki, Yoshimichi
AU - Komatsubara, Tetsuro
PY - 2008/8/6
Y1 - 2008/8/6
N2 - We examined the mechanism whereby nanoparticles of gold embedded in silica become elongated and oriented parallel to each other on ion irradiation. Elongation occurred for gold particles with radii smaller than 25 nm. The process was simulated by using a thermal spike model. For small-radius nanoparticles, ion irradiation raises the temperature above the melting points of both gold and silica, whereas for larger nanoparticles neither the gold nanoparticle nor the surrounding silica matrix is melted.
AB - We examined the mechanism whereby nanoparticles of gold embedded in silica become elongated and oriented parallel to each other on ion irradiation. Elongation occurred for gold particles with radii smaller than 25 nm. The process was simulated by using a thermal spike model. For small-radius nanoparticles, ion irradiation raises the temperature above the melting points of both gold and silica, whereas for larger nanoparticles neither the gold nanoparticle nor the surrounding silica matrix is melted.
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U2 - 10.1103/PhysRevB.78.054102
DO - 10.1103/PhysRevB.78.054102
M3 - Article
AN - SCOPUS:49249126126
SN - 1098-0121
VL - 78
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 5
M1 - 054102
ER -