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Detection of Cd<sup>2+</sup> Ions Using Surface Plasmon Coupled Emission on Engineered Silver-α Nano Alumina Thin Film Hybrids
Department of Physics, Sri SathyaSai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, India;
Department of Physics, Sri SathyaSai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, India;
Department of Physics and Astronomy, 202C Kinard Laboratory, Clemson University, Clemson, USA.
Department of Physics, Sri SathyaSai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, India;
- 1 Department of Physics, Sri SathyaSai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, India;
- 2
- 3
- 4 Department of Physics, Sri SathyaSai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, India;
- 5 Department of Physics and Astronomy, 202C Kinard Laboratory, Clemson University, Clemson, USA.
- 6 Department of Physics, Sri SathyaSai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, India;
Soft Nanoscience Letters·Volume 03 (2013)·Pages 27–31·Published 4 December 2013·DOI10.4236/snl.2013.34A008
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Abstract
We report the first time fabrication of a silver- α nano alumina thin film hybrid and the observation of the Surface Plasmon Coupled Emission (SPCE) phenomenon in these substrates. We report an “ 8 ” fold enhancement in the intensity of the coupled emission signal with respect to the isotropic fluorescence signal. The coupled emission signal displayed a strong p-polarized (92%, p-polarized) output and directionality, which is in accordance with the theory of SPCE. The directionality of emission was found to have strong correlation with the theoretical modeling of minimum reflectivity calculations based on the theory of Surface Plasmon Resonance (SPR). We also report the novel extension of the fabricated substrates towards the economical and sensitive detection of toxic Cd 2+ ions from aqueous solutions, which are of immense social relevance.
KeywordsCd<sup>2+</sup>IonsSurface Plasmon
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