Title of article
Optimization of a NOx gas sensor based on single walled carbon nanotubes
Author/Authors
Lucci، نويسنده , , M. and Reale، نويسنده , , A. and Di Carlo، نويسنده , , A. and Orlanducci، نويسنده , , S. and Tamburri، نويسنده , , E. and Terranova، نويسنده , , M.L. and Davoli، نويسنده , , I. and Di Natale، نويسنده , , C. and D’Amico، نويسنده , , A. and Paolesse، نويسنده , , R.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
6
From page
226
To page
231
Abstract
In the present work it is shown an efficient method for NOx detection in single wall carbon nanotubes (SWCNT) ordered by mean of dielectrophoretical process after dispersion in clorophormium solution over gold interdigitates. The NOx flux induces resistance change with respect of pure N2 flux over the ordered SWCNT. We investigate the efficiency of NOx detection when a control signal is applied to the sensing device through a back side contact, for optimized response time of the sensor. Moreover we studied the effect on absorption/desorption gas processes for NOx and NH3 by applying a gate voltage to the Si substrate beneath the interdigitated electrodes. The results indicate an improvement of the time and that acceleration of the response time of the sensor for the detection of NH3 is proportional to the gate voltage in the range 0–40 V.
Keywords
Desorption , NH3 , NOX , gas sensing , time response , Dielectrophoresis , Carbon nanotubes , Gate voltage , ABSORPTION
Journal title
Sensors and Actuators B: Chemical
Serial Year
2006
Journal title
Sensors and Actuators B: Chemical
Record number
1443234
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