Chemiresistive sensor based on polythiophene-modified single-walled carbon nanotubes for detection of 2.

Autor: Gaikwad, Sumedh, Bodkhe, Gajanan, Deshmukh, Megha, Patil, Harshada, Rushi, Arti, Shirsat, Mahendra D., Koinkar, Pankaj, Kim, Yun-Hae, Mulchandani, Ashok
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Zdroj: Modern Physics Letters B; Mar2015, Vol. 29 Issue 6/7, p-1, 5p
Abstrakt: In the present investigation, a chemiresistive sensor based on conducting polythiophene-modified single-walled carbon nanotubes (SWNTs) for 2 detection has been reported. The SWNTs were aligned across 3 μm gap between two gold microelectrodes on /2 substrate. Alignment of SWNTs was carried out by using AC dielectrophoretic technique and it was confirmed by current-voltage (I-V) measurement. Aligned SWNTs were modified by conducting polythiophene using charge controlled potentiostatic deposition and it was confirmed by field-effect transistor (FET) and electrochemical measurements. Polythiophene-modified SWNT devices were used for the 2 detection in chemiresistive modality. This sensor exhibited very good linear response range from 10 ppb to 10 ppm. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index