Growth of ZnO Nanorods and Their Applications for Liquid Crystal Devices

Mu-Zhe Chen; Sheng-Hsiung Yang; Shie-Chang Jeng

doi:10.1021/acsanm.8b00202

Growth of ZnO Nanorods and Their Applications for Liquid Crystal Devices

Mu-Zhe Chen, Sheng-Hsiung Yang, Shie-Chang Jeng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Different morphologies of ZnO nanorods were synthesized by using the two-step hydrothermal method, and they were applied to liquid crystal (LC) alignment films. The morphology of the ZnO nanorods, including length, diameter, and density, were controlled by the growth time, which ranged from 16 to 26 min. The morphology and the chemical features both contributed to the surface wettability of the ZnO nanorods. The LC pretilt angle on the ZnO nanorods was successfully controlled from homeotropic (â¼89.0°) to homogeneous (â¼1.7°) alignments, as the contact angle of water on ZnO nanorods was changed from 93 to 28° with the growth time. The analysis of X-ray diffraction and X-ray photoelectron spectroscopy showed that the crystallite size of ZnO nanorods increased with the growth time, while the oxygen vacancy decreased. The ZnO nanorods grown on the ITO glass substrate also improve the transmission of LCDs due to the antireflection effect.

Original language	American English
Pages (from-to)	1879-1885
Number of pages	7
Journal	ACS Applied Nano Materials
Volume	1
Issue number	4
DOIs	https://doi.org/10.1021/acsanm.8b00202
State	Published - 5 Apr 2018

Keywords

liquid crystal alignment
liquid crystal devices
pretilt angle
surface wettability
ZnO nanorods

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title = "Growth of ZnO Nanorods and Their Applications for Liquid Crystal Devices",

abstract = "Different morphologies of ZnO nanorods were synthesized by using the two-step hydrothermal method, and they were applied to liquid crystal (LC) alignment films. The morphology of the ZnO nanorods, including length, diameter, and density, were controlled by the growth time, which ranged from 16 to 26 min. The morphology and the chemical features both contributed to the surface wettability of the ZnO nanorods. The LC pretilt angle on the ZnO nanorods was successfully controlled from homeotropic ({\^a}¼89.0°) to homogeneous ({\^a}¼1.7°) alignments, as the contact angle of water on ZnO nanorods was changed from 93 to 28° with the growth time. The analysis of X-ray diffraction and X-ray photoelectron spectroscopy showed that the crystallite size of ZnO nanorods increased with the growth time, while the oxygen vacancy decreased. The ZnO nanorods grown on the ITO glass substrate also improve the transmission of LCDs due to the antireflection effect.",

keywords = "liquid crystal alignment, liquid crystal devices, pretilt angle, surface wettability, ZnO nanorods",

author = "Mu-Zhe Chen and Sheng-Hsiung Yang and Shie-Chang Jeng",

year = "2018",

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doi = "10.1021/acsanm.8b00202",

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T1 - Growth of ZnO Nanorods and Their Applications for Liquid Crystal Devices

AU - Chen, Mu-Zhe

AU - Yang, Sheng-Hsiung

AU - Jeng, Shie-Chang

PY - 2018/4/5

Y1 - 2018/4/5

N2 - Different morphologies of ZnO nanorods were synthesized by using the two-step hydrothermal method, and they were applied to liquid crystal (LC) alignment films. The morphology of the ZnO nanorods, including length, diameter, and density, were controlled by the growth time, which ranged from 16 to 26 min. The morphology and the chemical features both contributed to the surface wettability of the ZnO nanorods. The LC pretilt angle on the ZnO nanorods was successfully controlled from homeotropic (â¼89.0°) to homogeneous (â¼1.7°) alignments, as the contact angle of water on ZnO nanorods was changed from 93 to 28° with the growth time. The analysis of X-ray diffraction and X-ray photoelectron spectroscopy showed that the crystallite size of ZnO nanorods increased with the growth time, while the oxygen vacancy decreased. The ZnO nanorods grown on the ITO glass substrate also improve the transmission of LCDs due to the antireflection effect.

AB - Different morphologies of ZnO nanorods were synthesized by using the two-step hydrothermal method, and they were applied to liquid crystal (LC) alignment films. The morphology of the ZnO nanorods, including length, diameter, and density, were controlled by the growth time, which ranged from 16 to 26 min. The morphology and the chemical features both contributed to the surface wettability of the ZnO nanorods. The LC pretilt angle on the ZnO nanorods was successfully controlled from homeotropic (â¼89.0°) to homogeneous (â¼1.7°) alignments, as the contact angle of water on ZnO nanorods was changed from 93 to 28° with the growth time. The analysis of X-ray diffraction and X-ray photoelectron spectroscopy showed that the crystallite size of ZnO nanorods increased with the growth time, while the oxygen vacancy decreased. The ZnO nanorods grown on the ITO glass substrate also improve the transmission of LCDs due to the antireflection effect.

KW - liquid crystal alignment

KW - liquid crystal devices

KW - pretilt angle

KW - surface wettability

KW - ZnO nanorods

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DO - 10.1021/acsanm.8b00202

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JO - ACS Applied Nano Materials

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ER -

Growth of ZnO Nanorods and Their Applications for Liquid Crystal Devices

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Keywords

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