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Laser Patterning of ZnO Crystals on the Surface of Borosilicate Glass
Author(s) -
Nagai Reo,
Honma Tsuyoshi,
Komatsu Takayuki
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03486.x
Subject(s) - borosilicate glass , materials science , crystallization , laser , raman spectroscopy , diffraction , porous glass , optics , composite material , chemical engineering , physics , porosity , engineering
The laser‐induced crystallization technique has been applied to a borosilicate glass with a high ZnO content in order to pattern ZnO crystals on the glass surface. A glass with the composition of 65.5ZnO–19B 2 O 3 –9.5SiO 2 –6Sm 2 O 3 is developed, in which Sm 2 O 3 is added to transfer laser energy to thermal energy, and it is found that usual heat treatments in an electric furnace results in the formation of ZnO crystals with a hexagonal wurztite structure not only at the surface but also inside the glass. It is confirmed from X‐ray diffraction analyses and micro‐Raman scattering spectra that ZnO crystals are formed at the glass surface by irradiations of Yb:YVO 4 fiber laser (wavelength: 1080 nm, power: 1.3 W, scanning speed: S =7 μm/s). The present study is a first step for spatially selected patterning and design of functional ZnO crystals by laser‐induced crystallization in glasses.