High selectivity boolean olfaction using hollow-core wavelength-scalable Bragg fibers

Mecit Yaman, Adem Yildirim, Mehmet Kanik, Tugrul C. Cinkara, Mehmet Bayindir

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A new odorant detection scheme, based on infrared absorption of volatile organics inside an optofluidic channel array, is discussed in terms of its selectivity. The sensor unit of the array is a hollow core Bragg fiber that selectively (spectrally) guides an incident continuum radiation. The presence of infrared absorbing molecules in the channel results in the quenching of the otherwise transmitted signal. Each fiber unit in the array is designed and fabricated so that it is sensitive to specific chemical bonds and the bond environment, but at the same time, each fiber is also broadly sensitive to a large number of chemicals due to their infrared absorbance spectra. The cumulative array response data, using an appropriate threshold, enable selective binary sampling of the infrared fingerprint of hundreds of molecules. The selectivity of the system is quantitatively investigated with computer simulations and found to be exponentially increasing with the number of fibers in the array. Relatively simple data analysis using binary logic combined with the high selectivity of the novel scheme paves the way for ubiquitous application of electronic noses in toxic gas detection, food quality control, environmental monitoring, and breath analysis for disease diagnostics.

Original languageEnglish (US)
Pages (from-to)83-90
Number of pages8
JournalAnalytical Chemistry
Volume84
Issue number1
DOIs
StatePublished - Jan 3 2012
Externally publishedYes

Fingerprint

Wavelength
Fibers
Infrared radiation
Molecules
Poisons
Chemical bonds
Infrared absorption
Quality control
Quenching
Gases
Sampling
Radiation
Monitoring
Sensors
Computer simulation
Electronic nose

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

High selectivity boolean olfaction using hollow-core wavelength-scalable Bragg fibers. / Yaman, Mecit; Yildirim, Adem; Kanik, Mehmet; Cinkara, Tugrul C.; Bayindir, Mehmet.

In: Analytical Chemistry, Vol. 84, No. 1, 03.01.2012, p. 83-90.

Research output: Contribution to journalArticle

Yaman, Mecit ; Yildirim, Adem ; Kanik, Mehmet ; Cinkara, Tugrul C. ; Bayindir, Mehmet. / High selectivity boolean olfaction using hollow-core wavelength-scalable Bragg fibers. In: Analytical Chemistry. 2012 ; Vol. 84, No. 1. pp. 83-90.
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