TY - JOUR
T1 - The influence of the thermal diffusivity of the substrates on fabrication of metal nanostructures by femtosecond laser irradiation
AU - Takami, Akihiro
AU - Nakajima, Yasutaka
AU - Nedyalkov, Nikolay
AU - Terakawa, Mitsuhiro
N1 - Funding Information:
Y. Nakajima is grateful for a Grant-in-Aid for Research Fellow of the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2017, Springer-Verlag Berlin Heidelberg.
PY - 2017/2/1
Y1 - 2017/2/1
N2 - We demonstrate the fabrication of nanowire gratings by irradiation of femtosecond laser pulses to platinum thin films on various substrates: silicon carbide, aluminum nitride, silicon and fused silica. Scanning electron microscopy showed that many cracks were formed on the nanowire surfaces formed on silicon carbide, aluminum nitride and silicon substrates, while few cracks were formed on a fused silica substrate. Elemental analysis by energy-dispersive X-ray spectroscopy indicated that melting or evaporation of the platinum thin film could hardly occur in the case of the silicon carbide and aluminum nitride substrates. Calculated results by two temperature models revealed that the lattice temperature within the platinum thin films after laser irradiation depends on the thermal diffusivity of the substrates, which could influence the melting phase existence time. From the experimental and the calculated results, melting of the metal thin film could have influenced metal nanowire grating formation.
AB - We demonstrate the fabrication of nanowire gratings by irradiation of femtosecond laser pulses to platinum thin films on various substrates: silicon carbide, aluminum nitride, silicon and fused silica. Scanning electron microscopy showed that many cracks were formed on the nanowire surfaces formed on silicon carbide, aluminum nitride and silicon substrates, while few cracks were formed on a fused silica substrate. Elemental analysis by energy-dispersive X-ray spectroscopy indicated that melting or evaporation of the platinum thin film could hardly occur in the case of the silicon carbide and aluminum nitride substrates. Calculated results by two temperature models revealed that the lattice temperature within the platinum thin films after laser irradiation depends on the thermal diffusivity of the substrates, which could influence the melting phase existence time. From the experimental and the calculated results, melting of the metal thin film could have influenced metal nanowire grating formation.
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U2 - 10.1007/s00339-017-0771-2
DO - 10.1007/s00339-017-0771-2
M3 - Article
AN - SCOPUS:85010886885
SN - 0947-8396
VL - 123
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 2
M1 - 126
ER -