Abstract

We have developed a new method to intelligently sample analytes and introduce the analytes to sensors. The method automatically adjusts sampling duration according to the sensors' response to the analytes and converts the amplitude of the sensor output to a frequency output, giving us another opportunity to reduce noise in the signal. It also addresses some of the common sensor issues such as response time, saturation, chemical dynamic range, and sensor protection, saving precious detection time, protecting sensors, and enabling sensitive sensors built for low-concentration detection to be used for high-concentration detection as well. We have put together a system using a tuning fork chemical sensor as a sample sensor to demonstrate the feasibility and benefits of the new sensing technique.

Original languageEnglish (US)
Pages (from-to)606-611
Number of pages6
JournalAnalytical Chemistry
Volume80
Issue number3
DOIs
StatePublished - Feb 1 2008

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Chemical sensors
Sensors
Tuning
Sampling

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Frequency-coded chemical sensors. / Tsow, Francis; Forzani, Erica; Tao, Nongjian.

In: Analytical Chemistry, Vol. 80, No. 3, 01.02.2008, p. 606-611.

Research output: Contribution to journalArticle

Tsow, Francis ; Forzani, Erica ; Tao, Nongjian. / Frequency-coded chemical sensors. In: Analytical Chemistry. 2008 ; Vol. 80, No. 3. pp. 606-611.
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