Title :
Subwavelength sensing elements from film-coupled silver nanocubes
Author :
Powell, A.W. ; Watt, A.A.R. ; Assender, H.E. ; Smith, J.M.
Author_Institution :
Dept. of Mater., Univ. of Oxford, Oxford, UK
Abstract :
The extreme sensitivity of the plasmon resonance excited between a silver nanocube and an Ag film to spacer layer thickness is utilised to create a novel sub-wavelength sensing element. Using the highly moisture-sensitive polymer Nafion we have created a sensor that responds to changes in humidity though a shift of the plasmon resonance. This architecture could be easily adapted to detect a variety of other gases.
Keywords :
humidity sensors; metallic thin films; nanophotonics; nanosensors; nanostructured materials; optical polymers; optical sensors; silver; surface plasmon resonance; Ag-Ag; film-coupled silver nanocubes; gas detection; highly moisture-sensitive polymer Nafion; humidity sensor; plasmon resonance; spacer layer thickness; subwavelength sensing elements; Films; Humidity; Optical sensors; Plasmons; Sensitivity; Silver;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
