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A single input-single output coupled microresonator array for the detection and identification of multiple analytes
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10.1063/1.2964192
/content/aip/journal/apl/93/5/10.1063/1.2964192
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/5/10.1063/1.2964192

Figures

Image of FIG. 1.
FIG. 1.

Microscope image depicting the sensor with labeled shuttle mass SM, microbeam sensors , , , and , and detection laser location L. The inset depicts the capillary tube method used to functionalize the microbeam sensors.

Image of FIG. 2.
FIG. 2.

The frequency response of the device obtained experimentally by base exciting it with band-limited white noise and sensing the shuttle mass motion with the laser vibrometer in vacuum. The mode shapes, obtained experimentally using a Polytec scanning laser vibrometer, at resonances , , , , and , are also depicted.

Image of FIG. 3.
FIG. 3.

The resonance frequency shift of the localized microbeam modes vs concentration of toluene (left) and methanol (right). Note that the analyte concentration is given by . Also note that in this figure, and in Fig. 4, the device was excited with a swept sine wave. Band-limited white noise excitation yielded similar results.

Image of FIG. 4.
FIG. 4.

The resonance frequency shift of the localized microbeam modes , which are labeled 1–4, respectively, due to the presence of (a) 2.9% toluene, (b) 3.9% methanol, and (c) a mixture of 2.3% methanol and 2.3% toluene. (d) Close-up of the downward resonance shift in the shuttle mass response near comparing pure nitrogen and 5.8% methanol environments.

Tables

Generic image for table
Table I.

Polymers and solvents used for microbeam functionalization. Solution concentrations shown as mg polymer per mL solvent.

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/content/aip/journal/apl/93/5/10.1063/1.2964192
2008-08-04
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A single input-single output coupled microresonator array for the detection and identification of multiple analytes
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/5/10.1063/1.2964192
10.1063/1.2964192
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