Journal
NANO LETTERS
Volume 10, Issue 2, Pages 380-384Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl902382s
Keywords
Nanosensors; explosive detection; nanowires; conducting polymers; hybrid sensors
Categories
Funding
- NSF
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0925496] Funding Source: National Science Foundation
Ask authors/readers for more resources
Real-time detection of trace chemicals, such as explosives, in a complex environment containing various interferents has been a difficult challenge. We describe here a hybrid nanosensor based on the electrochemical reduction of TNT and the interaction of the reduction products with conducting polymer nanojunctions in an ionic liquid. The sensor simultaneously measures the electrochemical current from the reduction of TNT and the conductance change of the polymer nanojunction caused from the reduction product. The hybrid detection mechanism, together with the unique selective preconcentration capability of the ionic liquid, provides a selective, fast, and sensitive detection of TNT. The sensor, in its current form, is capable of detecting parts-per-trillion level TNT in the presence of various interferents within a few minutes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available