期刊
ACS NANO
卷 6, 期 4, 页码 3171-3178出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn205036e
关键词
chemical sensor; nanocoax; nanotube array
类别
资金
- National Cancer Institute [CA137681]
- Department of the Navy
- National Science Foundation [PHY-0804718]
- Seaver Institute
We report on the design, fabrication, and performance of a nanoporous, coaxial array capacitive detector for highly sensitive chemical detection. Composed of an array of vertically aligned nanoscale coaxial electrodes constructed with porous dielectric coax annuli around carbon nanotube cores, this sensor is shown to achieve parts per billion level detection sensitivity, at room temperature, to a broad class of organic molecules. The nanoscale, 3D architecture and microscale array,pitch of the sensor enable rapid access of target molecules and chip-based multiplexing capabilities, respectively.
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