A monoclinic tungsten trioxide nanowire array has been grown on silicon substrates using tungsten powders as source materials by thermal evaporation under specific synthesis conditions (1000 degrees C, 13-15 Torr, 200 sccm air flow). The morphology, chemical composition and crystal structure of the as-prepared tungsten trioxide nanowires were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and transmission electron microscopy. The nanowires were identified as monoclinic in structure, with diameters ranging from 40 to 100 nm and lengths up to 5 mm. It was found that sufficient oxygen and air flow are the major factors to influence the nanowire array growth. The nanowire array was employed directly for gas sensor fabrication using photolithography. The gas sensing experiments revealed that the nanowire array sensors are highly sensitive to NO2 (50 ppb), making the tungsten trioxide nanowire array a competitive candidate for highly sensitive gas sensor fabrication.
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Chi, Lingfei
Xu, Ningsheng
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Xu, Ningsheng
Deng, Shaozhi
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Deng, Shaozhi
Chen, Jun
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Chen, Jun
She, Juncong
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
机构:
Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Hong, Kunquan
Xie, Maohai
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Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Xie, Maohai
Hu, Rong
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Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Hu, Rong
Wu, Huasheng
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Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Chi, Lingfei
Xu, Ningsheng
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h-index: 0
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Xu, Ningsheng
Deng, Shaozhi
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Deng, Shaozhi
Chen, Jun
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Chen, Jun
She, Juncong
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Zhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaZhongshan Univ, Sch Phys & Engn, Guangdong Province Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
机构:
Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Hong, Kunquan
Xie, Maohai
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h-index: 0
机构:
Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Xie, Maohai
Hu, Rong
论文数: 0引用数: 0
h-index: 0
机构:
Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Hu, Rong
Wu, Huasheng
论文数: 0引用数: 0
h-index: 0
机构:
Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
Univ Hong Kong, HKU CAS Joint Lab New Mat, Hong Kong, Hong Kong, Peoples R ChinaUniv Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China