Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1785707 | Current Applied Physics | 2015 | 6 Pages |
Abstract
Semiconducting single-walled carbon nanotubes (s-SWCNTs) with lower absorption energy of NO2 gas exhibited higher sensitivity than metallic SWCNTs. The result originated from quantum capacitance of s-SWCNTs, which was readily affected by charge transfer, whereas that of m-SWCNTs showed no change with even more transferred charges. However, m-SWCNT that were aligned polarize adsorbed gases on the surface by a local field that contributed the capacitance changes of m-SWCNT networks. This is a newly introduced detection mechanism of gas sensing using m-SWCNTs.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Seong Chu Lim, Jung Hyun Yoon, Dinh Loc Duong, Young Woo Cho, Tae Hyung Kim, Soo Min Kim, Ha Ryong Hwang, Young Hee Lee,