Acetone Sensing Using Graphene Quantum Capacitance Varactors

被引：0
|
作者：
Ma, Rui [1 ]
Su, Qun [1 ]
Li, Jing [1 ]
Koester, Steven J. [1 ]
机构：
[1] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA
来源：
2016 IEEE SENSORS | 2016年
关键词：
graphene; acetone; quantum capacitance; varactor; SENSOR;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Sensing of acetone using the quantum capacitance in graphene is demonstrated. The sensor was constructed by using graphene as the top electrode in a metal-oxide-graphene variable capacitor (varactor) structure. The relative capacitance change was found to vary with acetone concentration with a relative capacitance sensitivity, Delta C/C of 1.29 +/- 0.04 x 10(-4) % / ppmv. The sensor was also found to have 3x enhanced sensitivity in dry air compared to N-2 and showed excellent reversibility. The results represent the first step toward the realization of passive, wireless acetone sensors using graphene varactors.
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页数：3
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