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Periodic versus aperiodic: Enhancing the sensitivity of porous silicon based optical sensors
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10.1063/1.2737391
/content/aip/journal/apl/90/19/10.1063/1.2737391
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/19/10.1063/1.2737391

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Relative variation of PSi refractive index layer with as a function of layer liquid fraction for different refractive indices (a); as a function of for different layer liquid fractions.

Image of FIG. 2.
FIG. 2.

Experimental reflectivity spectra of Bragg mirror (a, solid line) and Thue-Morse sequence (b, solid line) composed by 64 layers. In dashed line are reported the reflectivity spectra after exposure to methanol. and are the wavelength monitor for Bragg and Thue-Morse multilayer, respectively.

Image of FIG. 3.
FIG. 3.

Calculated relative wavelength shift for BM and TMM (dashed line) as a function of layer liquid fraction after exposure of methanol .

Image of FIG. 4.
FIG. 4.

(Color online) Experimental response curve of TMM and BM.

Tables

Generic image for table
Table I.

Chemical organic substances and its refractive index used in the sensing experiment. and are the wavelength shift and the layer liquid fraction for Thue-Morse (Bragg) structures. The reference wavelength is for TMM and for BM.

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/content/aip/journal/apl/90/19/10.1063/1.2737391
2007-05-08
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Periodic versus aperiodic: Enhancing the sensitivity of porous silicon based optical sensors
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/19/10.1063/1.2737391
10.1063/1.2737391
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