Terahertz Computed Tomography Helps ID Chemical Substances
As radiation sources become more efficient, detectors become more sensitive, and acquisition speeds up, terahertz computed tomography holds promise for nondestructively finding and distinguishing between different materials by visualizing spatial information and distribution within a sample. Working in the range of 1011 to 1013 Hz and 30 µm to 3 mm, terahertz radiation penetrates paper, clothing, plastics, ceramics and dry wood. It also is highly sensitive to water and to many organic s...
Photonics Spectra, December 2011