12 research outputs found
Highly sensitive SPR response of Au/chitosan/graphene oxide nanostructured thin films toward Pb (II) ions
Optical sensors based on surface plasmon resonance (SPR) are utilized for detecting toxic heavy metals in solutions. To improve the sensitivity of SPR sensors, nanostructured thin films with active layers can be synthesized. In this study, the response to Pb (II) was measured and compared for SPR sensors incorporating gold–chitosan–graphene oxide (Au/CS/GO) nanostructured thin films and Au/CS films. The characterization of Au/CS/GO using FESEM analysis revealed a film composed of nanosheets with wrinkled, rough surfaces. The results from XRD analysis confirmed the successful incorporation of GO in the prepared films. Additionally, AFM analysis determined that the Au/CS/GO films had a root mean square (rms) roughness of 28.38 nm and were considerably rougher than the Au/CS films. Upon exposure to a 5 ppm Pb (II) ion solution, the Au/CS/GO films exhibited higher SPR sensitivity, as much as 1.11200 ppm−1, than Au/CS films, 0.77600 ppm−1. This enhancement of the SPR response was attributed to strong covalent bonding between CS and GO in these films. These results indicated that the Au/CS/GO films show potential for the detection of heavy metal pollution in environmental applications
Numerical investigation into a surface plasmon resonance sensor based on optical fiber microring
Harn- und Plasmasteroide unter Antiandrogen (SH 80881)-Behandlung bei Frauen mit Hirsutismus
Zur Bedeutung von Politischer Bildung, Menschenrechtsbildung und Europabildung für Interkulturelle Bildung
Hybrid Tamm-surface plasmon polariton mode for highly sensitive detection of protein interactions
Highly sensitive SPR response of Au/chitosan/graphene oxide nanostructured thin films toward Pb (II) ions
A Surface Scientist's view on Spectroscopic Ellipsometry
none1noneMaurizio CanepaCanepa, Maurizi