By vertical sedimentation and oblique titration, silica microspheres were grown in different shapes of concave microzones that were etched on a (100) p-silicon substrate. Through scanning electron microscope observation and optical reflective spectra measurement, sedimentation of microspheres in those microzones was compared. An index was introduced to judge the efficiency of sedimentation. The comparison demonstrates that regular hexagons and triangles facilitate the growth of photonic crystals the most.
© 2006 Optical Society of America
Original Manuscript: October 14, 2005
Revised Manuscript: June 23, 2006
Manuscript Accepted: July 13, 2006
Zhicheng Ye, Peide Han, Chunhua Zhao, Yujun Quan, Xiaodong Lu, and Li Wu, "Self-assembling of submicrometer three-dimensional photonic crystals in concave microzones etched on silicon substrates," J. Opt. Soc. Am. A 24, 231-235 (2007)