bullet Sensors & Transducers Journal

    (ISSN 1726- 5479)

Nanotoday journal's logo


25 Top Downloaded Articles

Editorial Calendar 2008

Submit an Article

Editorial Board

Current Issue

S&T journal's cover


Sensors & Transducers Journal 2006

2000-2002 S&T e-Digest Contents

2003 S&T e-Digest Contents

2004 S&T e-Digest Contents

2005 S&T e-Digest Contents


  Best Articles 2006




Vol. 85, Issue 11, November 2007, pp.1708-1713




Focused Ion Beam Nanopatterning for Carbon Nanotube Ropes Based Sensor


Vera LA FERRARA, Ivana NASTI, Brigida ALFANO, Ettore MASSERA and Girolamo DI FRANCIA

ENEA, Portici Research Center, Localitą Granatello 80055 Portici (NA)

E-mail: vera.laferrara@portici.enea.it



Received: 13 March 2007   /Accepted: 20 November 2007   /Published: 26 November 2007


Abstract: Focused Ion Beam (FIB) technology has been used to realize electrode patterns for contacting Single Walled Carbon Nanotubes (SWCNTs) ropes for chemical gas sensor applications. Two types of transducers, based on a single rope and on bundles, have been realized starting from silicon/Si3N4 substrate. Electrical behaviour, at room temperature, in toxic gas environments, has been investigated and compared to evaluate contribution of a single rope based sensor respect to bundles one. For all the devices, upon exposure to NO2 and NH3, the conductance has been found to increase or decrease respectively. Conductance signal is stronger for sensor based on bundles, but it also evident that response time in NO2 is faster for device based on a single rope. FIB technology offers, then, the possibility to contact easily a single sensitive nanowire, as carbon nanotube rope.


Keywords: Focused ion beam, Nanopatterning, Chemical gas sensor, SWCNTs Rope


Acrobat reader logo Click <here> or title of paper to download the full pages article (555 K)





Reed more articles and papers about Nanosensors and Nanodevices



1999 - 2007 Copyright ©, International Frequency Sensor Association (IFSA). All Rights Reserved.

Home - News - Links - Archives - Tools - Standardization - Patents - Marketplace - Projects - Wish List - Subscribe - Search - e-Shop - Membership

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Sensor Jobs - Site Map