Abstract: The present disclosure relates to compositions, films and devices for sensing gas molecules. More particularly, the present disclosure relates to compositions, films and devices for sensing gas molecules utilizing optical sensing techniques having improved optical properties including a fluorinated protective layer.

Abstract: The present disclosure relates to compositions, films and devices for sensing gas molecules. More particularly, the present disclosure relates to compositions, films and devices for sensing gas molecules utilizing optical sensing techniques having improved optical properties.

Abstract: Methods and systems for efficiently and accurately detecting and identifying concealed materials. The system includes an analysis subsystem configured to process one or more detection outputs, the detection outputs obtained by illuminating regions with a electromagnetic radiation source from the number of electromagnetic radiation sources, each electromagnetic radiation source emitting at a different wavelength, the one or more detection outputs, after processing, constituting a vector of processed data, and the analysis subsystem being also configured to compare the vector of processed data to a predetermined vector corresponding to a predetermined material, presence of the predetermined material being determined by the comparison.