Most SPR applications are in the field of biological sensing and I was wondering if it has been used to sense any environmental factors related to pollution or detecting specific particles in the air?
Dear Nirmal Pol ,
For specific gas sensing applications of SPR, an ‘‘active sensing layer’’ is needed onto the Au transducing substrate. Its active role consists of the change of its optical constants upon the interaction with the analyte gas which can be sensitively detected as a change in the reflectivity SPR curve. For instance, in this work, a nanoporous columnar TiO2 layer has been chosen as sensing material to detect the presence of different alcohol vapours:
Article Enhanced gas sensing performance of TiO2 functionalized magn...
In fact, the transducing substrate is not only Au but a multilayer Au/Co/Au, so besides the SPR curve, also a Magneto-Optical SPR signal can be measured.
A similar approach has been used to detect amines in vapour phase, in this case with zinc porphyrin dimers as sensing layer:
Data Enhanced magneto-optical SPR platform for amine sensing base...
Dear Nirmal Pol
Adding to already shared articles above do take a look at:
Article On the application of gold based SPR sensors for the detecti...
Article A potable surface plasmon resonance sensor system for real-t...
Article Mobile Phone-Based Picomolar Detection of Tannic Acid on Nd ...
Article Kretschmann-Based Optical Sensor via Thermally Tunable Refra...
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