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Responses of nanostructured sensing array to mixed VOCs: Feature extraction and pattern recognition analysis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper investigates the response characteristics of a sensing array constructed from nanostructured thin Alms on interdigitated microelectrodes (IMEs). It also demonstrates the array's capability to identify and quantify gas mixtures. The films were prepared from dithiol (PRDT, PDT, ODT, NDT, and DDT) and mercaptoundecanoic acid (MUA) linked assemblies of 2-nm sized gold nanoparticles. These films exhibit sensitive responses to volatile organic compounds (VOCs). The characteristics of the stationary response signals are studied. The static responses are extracted as the features for identifying VOCs by pattern recognition. The Principal Component Analysis (PCA) shows the patterns of binary mixture presented in the static features are linear combinations of the individual analytes' patterns. Pattern classification based on the selected features is performed with Artificial Neural Network (ANN), which shows satisfied detection and quantification performance.

Original languageEnglish
Title of host publication2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings
Pages1058-1061
Number of pages4
DOIs
StatePublished - 2007
Event2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007 - Hong Kong, China
Duration: Aug 2 2007Aug 5 2007

Publication series

Name2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings

Conference

Conference2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007
Country/TerritoryChina
CityHong Kong
Period08/2/0708/5/07

Keywords

  • Nanoparticle
  • Pattern recognition
  • Sensor array
  • VOC detection

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