| abstract |
Disclosed herein are monitors that can be used to detect and / or monitor the presence of organic analytes and can be used for personal surveillance and / or for zone surveillance. The monitor includes at least one optically irradiable sensing element that responds to the presence of the analyte of interest. The monitor may include various features, components, and functionality that enhance the performance of the sensing element, including, for example, protective layers, spacer elements, viewing angle control features, and barrier layers. |