« Previous AbstractThe use of permeation tube device and the development of empirical formula for accurate permeation rate    Next Abstract"Unobtrusive Monitoring the Daily Activity Routine of Elderly People Living Alone, with Low-Cost Binary Sensors" »

MRS Bull

Title:		An optoelectronic nose: 'seeing' smells by means of colorimetric sensor arrays
Author(s):		Suslick KS;
Address:
Journal Title:		MRS Bull
Year:		2004
Volume:		29
Issue:		10
Page Number:		720 - 725
DOI:		10.1557/mrs2004.209
ISSN/ISBN:		0883-7694 (Print) 0883-7694 (Linking)
Abstract:		"A new approach to general sensors for odors and volatile organic compounds (VOCs) using thin films of chemically responsive dyes as a colorimetric sensor array is described. This optoelectronic 'nose,' by using an array of multiple dyes whose colors change based on the full range of intermolecular interactions, provides enormous discriminatory power among odorants in a simple device that can be easily digitally imaged. High sensitivities (ppb) have been demonstrated for the detection of biologically important analytes such as amines, carboxylic acids, and thiols. By the proper choice of dyes and substrate, the array can be made essentially nonresponsive to changes in humidity"
Keywords:		*Biosensing Techniques Colorimetry/*instrumentation/*methods Coloring Agents/analysis Humidity Metalloporphyrins Odorants/*analysis Organic Chemicals/*analysis Sensitivity and Specificity Volatilization;
Notes:		"MedlineSuslick, Kenneth S eng HL 25934/HL/NHLBI NIH HHS/ Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. England 2005/07/05 MRS Bull. 2004 Oct; 29(10):720-5. doi: 10.1557/mrs2004.209"