赤铁矿
材料科学
纳米管
纳米技术
基质(水族馆)
丙酮
氧化物
传感器阵列
金属
光电子学
碳纳米管
有机化学
化学
冶金
地质学
海洋学
统计
数学
作者
Do Hong Kim,Young-Seok Shim,Jong-Myeong Jeon,Hu Young Jeong,Sung Soo Park,Young Woon Kim,Jin-Sang Kim,Jong‐Heun Lee,Ho Won Jang
摘要
Vertically ordered nanotube array is a desirable configuration to improve gas sensing properties of the hematite which is the most abundant and cheapest metal oxide semiconductor on earth but has low and sluggish chemiresistive responses. We have synthesized a vertically aligned, highly ordered hematite nanotube array directly on a patterned SiO2/Si substrate and then it used as a gas sensor without additional processing. The nanotube array sensor shows unprecedentedly ultrahigh and selective responses to acetone with detection limits down to a few parts per billion and response time shorter than 3 s.
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