Abstract: The present invention provides a system and method for detecting a target in a sample. In one aspect, a collection device includes a collection chamber, a test chamber, a passageway between the collection chamber and the test chamber, and a detection system positioned within the test chamber. The detection system includes at least one of a spiropyran, a molecularly imprinted polymer and a nonimprinted polymer.

Abstract: An article is provided for the detection of a drug in a liquid medium. The article includes a polymer having pores specifically imprinted to provide for capture of a drug in the pores, nanoparticles, and photochromic optical switch molecules. Capture of the drug in the pores of the polymer results in a change in the spatial relation of the nanoparticles in the polymer, causing the photochromic optical switch molecules to undergo a change in energy state which corresponds to a change in spectra of the photochromic optical switch molecules, thereby providing for detection of the drug.

Abstract: An explosive device is described which employs a particular titanium hydride-potassium perchlorate composition directly ignitible by an electrical bridgewire.