Room-temperature hydrogen gas sensor with ZnO nanorod arrays grown on a quartz substrate

2012 ◽  
Vol 46 ◽  
pp. 254-258 ◽  
Author(s):  
J.J. Hassan ◽  
M.A. Mahdi ◽  
C.W. Chin ◽  
H. Abu-Hassan ◽  
Z. Hassan
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Quartz Substrate ◽  
Hydrogen Gas ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays

A high-sensitivity room-temperature hydrogen gas sensor based on oblique and vertical ZnO nanorod arrays

2013 ◽  
Vol 176 ◽  
pp. 360-367 ◽  
Author(s):  
J.J. Hassan ◽  
M.A. Mahdi ◽  
C.W. Chin ◽  
H. Abu-Hassan ◽  
Z. Hassan
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
High Sensitivity ◽  
Hydrogen Gas ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays

scholarly journals Room temperature electrically pumped ultraviolet random lasing from ZnO nanorod arrays on Si

2009 ◽  
Vol 17 (16) ◽  
pp. 14426 ◽  
Author(s):  
Xiangyang Ma ◽  
Jingwei Pan ◽  
Peiliang Chen ◽  
Dongsheng Li ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Random Lasing ◽  
Electrically Pumped

Low-Temperature Synthesis and Optical Property of ZnO Nanorod Arrays

2011 ◽  
Vol 183-185 ◽  
pp. 1605-1610
Author(s):  
Feng Feng Li ◽  
Chao Ling Li ◽  
Ming Xi Zhang ◽  
Yi Shen
Keyword(s):  
Low Temperature ◽  
Quartz Substrate ◽  
Bath Temperature ◽  
Sem Analysis ◽  
Molar Ratio ◽  
Growth Time ◽  
Reactant Ratio ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays

Well-aligned ZnO nanorod arrays with 100-200nm diameter and about 1μm length were vertically grown on quartz substrate at relatively low temperature by a solution deposition method. The effects of reactant ratio, water-bath temperature, growth time on crystal structure were discussed. Microstructure of the arrays was investigated using X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM), optical properties were examined using fluorescence spectrophotometer. The results show that a Zn/C6H12N4 molar ratio of 1:1, bath temprature 70°C, growth time of 24h are the optimal condition for the preparation of densely distributed ZnO arrays. XRD and FE-SEM analysis confirmed that the ZnO nanorod is a single crystal with a wurtzite structure and the photoluminescence (PL) spectra exhibit coexistence properties of ultraviolet (UV), blue and green emissions.

Large-Scale Fabrication of Sub-20-nm-Diameter ZnO Nanorod Arrays at Room Temperature and Their Photocatalytic Activity

2009 ◽  
Vol 113 (24) ◽  
pp. 10452-10458 ◽  
Author(s):  
Seungho Cho ◽  
Semi Kim ◽  
Ji-Wook Jang ◽  
Seung-Ho Jung ◽  
Eugene Oh ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Large Scale ◽  
Room Temperature ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
20 Nm

Highly sensitive, temperature-dependent gas sensor based on hierarchical ZnO nanorod arrays

2015 ◽  
Vol 3 (43) ◽  
pp. 11397-11405 ◽  
Author(s):  
Xiaomei Wang ◽  
Fazhe Sun ◽  
Yongqing Duan ◽  
Zhouping Yin ◽  
Wei Luo ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Process Parameters ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Optimal Process ◽  
Temperature Dependent ◽  
Measuring Range ◽  
Highly Sensitive ◽  
Gas Response

The hierarchical ZnO-NAs sensor shows highly sensitive, repeatable on–off cycles and temperature dependent response to NO2. The optimal process parameters of the MES-CHSM are presented to achieve optimal morphology, enlarge gas response and measuring range.

scholarly journals Magnetic Properties of Well-Aligned ZnO Nanorod Arrays Grown by a Simple Hydrothermal Reaction

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Jiangni Yun ◽  
Rui Qu ◽  
Zhiyong Zhang ◽  
Jun Li
Keyword(s):  
Room Temperature ◽  
Hydrothermal Reaction ◽  
Substrate Surface ◽  
Room Temperature Ferromagnetism ◽  
Zno Nanorods ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
X Ray Diffraction ◽  
Half Metallic

Well-aligned ZnO nanorod arrays with room temperature ferromagnetism were prepared on glass substrate through hydrothermal method. The as-prepared nanorod arrays were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), photoluminescence (PL) spectrum, and magnetization measurements. The XRD and SEM results indicated that the ZnO nanorods are with the wurtzite structure and exhibit preferential (002) orientation withc-axis perpendicular to the substrate surface. The PL results suggested that the possible defect in the as-prepared ZnO nanorod arrays might beVZn,Oi, orOZn. The first-principles calculations reveal that the room temperature ferromagnetism may result from theVZndefects present in the ZnO nanorod and the hybridization of the Zn 3d states with O 2p states is responsible for the half-metallic ferromagnetism in ZnO nanorod.

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