Title :
Nitrophenol detection using suspended SWNT films for environmental monitoring
Author :
An, Taechang ; Kim, In-tae ; Lim, Geunbae
Author_Institution :
Dept. of Mech. Eng., Pohang Univ. of Sci. & Technol. (POSTECH), Pohang, South Korea
Abstract :
Suspended addressable SWNT film arrays between cantilever electrodes were successfully developed for environmental monitoring. Structurally suspended SWNT films from substrate floor made possible rapid and highly sensitive detection of target molecules with increased convectional and diffusional fluxes of the molecules and with a large binding surface area. SWNT film FET resulted in a real-time, label-free, and electrical detection of nitrophenol to the concentration of ca. 1μM with a step-wise rapid response time of several seconds.
Keywords :
cantilevers; carbon nanotubes; chemical sensors; electrochemical electrodes; field effect transistors; nanosensors; nanotube devices; substrates; thin film sensors; FET; cantilever electrode; diffusional flux; electrical detection; environmental monitoring; highly sensitive detection; label free detection; large binding surface area; nitrophenol detection; step-wise rapid response time; substrate floor; suspended SWNT film array; target molecule;
Conference_Titel :
Sensors, 2010 IEEE
Conference_Location :
Kona, HI
Print_ISBN :
978-1-4244-8170-5
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2010.5690334
