Browsing by Author "Ho, MS"

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Fabrication of vertical ZnO nanowires on silicon(100) with epitaxial ZnO buffer layer
(2004-11-01)
Li, SY
;
Lin, P
;
Lee, CY
;
Ho, MS
;
Tseng, TY
Vertical ZnO nanowires were successfully grown on epitaxial ZnO (002) buffer layer/Si (100) substrate. The nanowire growth process was controlled by surface morphology and orientation of the epitaxial ZnO buffer layer, which was deposited by radio-frequency (rf) sputtering. The copper catalyzed the vapor-liquid-solid growth of ZnO nanowires with diameter of similar to30 nm and length of similar to5.0 mum. The perfect wurtzite epitaxial structure (HCP structure) of the ZnO (0002) nanowires synthesized on ZnO (002) buffer layer/Si (100) substrate results in excellent optical characteristics such as strong UV emission at 380 nm with potential use in nano-optical and nano-electronic devices.
High birefringent liquid crystals
(1995)
Wu, ST
;
Margerum, JD
;
Ho, MS
;
Fung, BM
;
Hsu, CS
Several liquid crystal dyes and fluorinated compounds with high birefringence are synthesized and their properties evaluated. These polar compounds are useful dopants for enhancing the dielectric anisotropy of the dialkyl diphenyl-diacetylene host.