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A study of imprint mold materials suited for B 2 O 3 ‐La 2 O 3 ‐based glass
Author(s) -
Yasui Manabu,
Omata Yukiko,
Sugimoto Kohichi,
Kaneko Satoru,
Hirabayashi Yasuo,
Takahashi Masaharu,
Maeda Ryutaro
Publication year - 2011
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.10301
Subject(s) - materials science , contact angle , mold , alloy , softening point , composite material , phase (matter) , thermal , softening , thermodynamics , chemistry , physics , organic chemistry
Abstract The reactivity between nanoimprint mold materials and optical glass has been investigated by measuring the contact angle between these materials in a nitrogen atmosphere at high temperatures up to 1000 °C. Since low‐softening‐temperature optical glass was chosen in this study, the thermal upper limit of the contact angle measurement was set as 800 °C. As mold materials, electrodeposited Ni‐W alloy containing 40 wt‐% W and glasslike carbon (GC) were chosen. In the case of GC, the contact angle did not change greatly at temperatures up to 800 °C, and an obvious reactant phase in the interface layer between the GC and the molten glass was observed. In the case of the Ni‐W alloy, the contact angle decreased with increasing temperature, and no reactant phase was observed at the interface. This indicates that the Ni‐W alloy is suitable as a mold material for B 2 O 3 ‐La 2 O 3 ‐based optical glass. © 2011 Wiley Periodicals, Inc. Electron Comm Jpn, 94(2): 17–22, 2011; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/ecj.10301