Full text loading...
(Color online) (a) Schematic representation of the MPC optical sensor with receptor layer. (b) Scanning electron micrograph of the grating region of the sensor. (c) PR versus cover index for a series of liquid analytes.
(Color online) Measured transmittance (for air cover) and PR of PPy deposited PC before and after exposure to (a) aq. NH3, with polarization transduction signal ∼50° for different samples. (b) MeOH, polarization transduction signal ∼10°, for different samples, showing consistently sensitive and easily measurable response. PR angles for both θ (solid squares), and 180° + θ (open squares) are shown for wavelengths below 1550 nm for Figure 2(a) and below 1525 nm for Figure 2(b). The insets show the degree of polarization and ellipticity for when PPy cover exposed to aq. NH3 and MeOH, respectively.
(Color online) PR for fundamental to third-order backscattered mode stop bands with air, GNP and thiolated GNP as covers. In our measurements, the angle and its 180° complement are indistinguishable. The inset plots 1, 2, and 3 show degree of polarization, transmittance, and ellipticity for air cover, respectively.
Article metrics loading...