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Title: Dual-transduction-mode sensing approach for chemical detection

Abstract

Smart devices such as electronic nose have been developed for application in many fields like national security, defense, environmental regulation, health care, pipeline monitoring and food analysis. Despite a large array of individual sensors, these devices still lack the ability to identify a target at a very low concentration out of a mixture of odors, limited by a single type of transduction as the sensing response to distinguish one odor from another. Here, we propose a new sensor architecture empowering each individual sensor with multi-dimensional transduction signals. The resolving power of our proposed electronic nose is thereby multiplied by a set of different and independent variables which synergistically will provide a unique combined fingerprint for each analyte. We demonstrate this concept using a Light Emitting Organic Field-Effect Transistor (LEOFET). Sensing response has been observed on both electrical and optical output signals from a green LEOFET upon exposure to an explosive taggant, with optical signal exhibiting much higher sensitivity. This new sensor architecture opens a field of devices for smart detection of chemical and biological targets.

Authors:
 [1];
  1. (Frank)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1059202
Report Number(s):
PNNL-SA-86165
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Sensors and Actuators. B, Chemical, 174:366-372
Additional Journal Information:
Journal Name: Sensors and Actuators. B, Chemical, 174:366-372
Country of Publication:
United States
Language:
English

Citation Formats

Wang, Liang, and Swensen, James S. Dual-transduction-mode sensing approach for chemical detection. United States: N. p., 2012. Web. doi:10.1016/j.snb.2012.08.036.
Wang, Liang, & Swensen, James S. Dual-transduction-mode sensing approach for chemical detection. United States. doi:10.1016/j.snb.2012.08.036.
Wang, Liang, and Swensen, James S. Thu . "Dual-transduction-mode sensing approach for chemical detection". United States. doi:10.1016/j.snb.2012.08.036.
@article{osti_1059202,
title = {Dual-transduction-mode sensing approach for chemical detection},
author = {Wang, Liang and Swensen, James S.},
abstractNote = {Smart devices such as electronic nose have been developed for application in many fields like national security, defense, environmental regulation, health care, pipeline monitoring and food analysis. Despite a large array of individual sensors, these devices still lack the ability to identify a target at a very low concentration out of a mixture of odors, limited by a single type of transduction as the sensing response to distinguish one odor from another. Here, we propose a new sensor architecture empowering each individual sensor with multi-dimensional transduction signals. The resolving power of our proposed electronic nose is thereby multiplied by a set of different and independent variables which synergistically will provide a unique combined fingerprint for each analyte. We demonstrate this concept using a Light Emitting Organic Field-Effect Transistor (LEOFET). Sensing response has been observed on both electrical and optical output signals from a green LEOFET upon exposure to an explosive taggant, with optical signal exhibiting much higher sensitivity. This new sensor architecture opens a field of devices for smart detection of chemical and biological targets.},
doi = {10.1016/j.snb.2012.08.036},
journal = {Sensors and Actuators. B, Chemical, 174:366-372},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {11}
}