Park, Hyung Goo Hwang, Sukju Lim, Juhwan Kim, Duck-Hwan Song, In Sang Kim, Jae Hun Woo, Deok Ha Lee, Seok Jun, Seong Chan 2024-01-20T15:03:59Z 2024-01-20T15:03:59Z 2021-09-04 2012-04 0021-4922 https://pubs.kist.re.kr/handle/201004/129405 We demonstrated the chemical-vapor sensing properties of graphene and carbon nanotubes (CNTs) by comparing their performances based on the two-dimensional exposure ratio. In order to implement the gas sensing, two kinds of sensors were properly prepared via the highly oriented pyrolytic graphite (HOPG) and CNT-dispersing methods, which cover different sensing area each other. Although the area of graphene is three times smaller than that of CNTs, the excellent sensing performance of graphene in the various concentration of the target gas is shown in terms of the sensitivity, the reactivity, and response time. We concluded this experimental result by focusing on the surface to volume ratio. (C) 2012 The Japan Society of Applied Physics English IOP PUBLISHING LTD GAS-DETECTION SENSORS NO2 NETWORK FILMS PPM Comparison of Chemical Vapor Sensing Properties between Graphene and Carbon Nanotubes Article 10.1143/JJAP.51.045101 1 JAPANESE JOURNAL OF APPLIED PHYSICS, v.51, no.4 JAPANESE JOURNAL OF APPLIED PHYSICS 51 4 scie scopus 000302413100049 2-s2.0-84860480099 Physics, Applied Physics Article GAS-DETECTION SENSORS NO2 NETWORK FILMS PPM Graphene Carbon Nanotubes Chemical vapor sensing