Figure 8
From: Optofluidic vapor sensing with free-space coupled 2D photonic crystal slabs
Measured sensorgrams of hexane and ethanol vapors for the PCS coated with two polymer thicknesses: (a) 1.74 × 103 ppm hexane vapor with 5 nm polymer; (b) 9.4 × 103 ppm ethanol vapor with 5 nm polymer; (c) 4.34 × 103 ppm hexane vapor with 20 nm polymer; and (d) 1.17 × 104 ppm ethanol vapor with 20 nm polymer.
