New technique to prevent rust

    A newly developed method of ensuring paint layers have been properly applied could help prevent rust as well as diagnose the early signs of skin cancer.
    The system will emit a beam of terahertz-frequency radiation into the paint, where it will penetrate the paint layers without causing damage. As the beam moves through the layers, it will be reflected back at different intensities of light, which will reveal the thickness of the paint layers and allow the technician to determine if the coats have been properly applied--a key step preventing rust.
    The method could also be configured in a way that would allow it to analyze the skin's structure and help to diagnose the early signs of cancer.