optode
Sign in to saveAlso known as optrode, optical electrode
An optode or optrode is an optical sensor device that optically measures a specific substance usually with the aid of a chemical transducer.
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An optode or optrode is an optical sensor device that optically measures a specific substance usually with the aid of a chemical transducer.
==Construction== An optode requires three components to function: a chemical that responds to an analyte, a polymer to immobilise the chemical transducer and instrumentation (optical fibre, light source, detector and other electronics). Optodes usually have the polymer matrix coated onto the tip of an optical fibre, but in the case of evanescent wave optodes the polymer is coated on a section of fibre that has been unsheathed.