Periodic ZnO nanorod arrays defined by polystyrene microsphere self-assembled monolayers.
We demonstrate a low-cost and effective method to fabricate hexagonally patterned, vertically aligned ZnO nanorod arrays. Selective wet-etching is used to develop the catalyzing gold particle hexagonal pattern with the aid of a polystyrene microsphere self-assembled monolayer. The gold particles have tunable sizes independent of the polystyrene microsphere's diameter and are inherently round in shape. Each ZnO rod is grown individually from a catalyzing site via catalyst-initiated epitaxy, and the original hexagonal periodicity is well-preserved. The rods have flat ends, and the diameters of the rods can be controlled well by the amount of source materials. This method provides a promising way to create ZnO one-dimensional nanostructures for applications as two-dimensional photonic crystal, sensor arrays, nanolaser arrays, and optoelectronic devices.
Liu
D F
DF
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Graduate School of the Chinese Academy of Sciences, Beijing 100080, P R China.
Xiang
Y J
YJ
Wu
X C
XC
Zhang
Z X
ZX
Liu
L F
LF
Song
L
L
Zhao
X W
XW
Luo
S D
SD
Ma
W J
WJ
Shen
J
J
Zhou
W Y
WY
Wang
G
G
Wang
C Y
CY
Xie
S S
SS
D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D008863:Microspheres; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011137:Polystyrenes / Q000737:chemistry*; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry*
D011137:Polystyrenes; D015034:Zinc Oxide