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In recent years, tremendous advances have been made in the choice of materials used in the industry. With weight reduction as the goal, composite and polymer materials are more and more popular but they are almost transparent to X-ray. Because of this, interest has grown in other wavelengths like terahertz (THz). Due to a difference in how X-ray and THz propagate, X-ray CT algorithms cannot be directly...
We have evaluated the performance of the InP double heterojunction bipolar transistor and InP-based varactors as a room temperature sensitive detectors for THz computed tomography applications. They were used in transmission mode for the 350 GHz and 650 GHz atmospheric windows.
The aim of this report is to present potential interest of a new technology of sensor for measuring terahertz radiation at room temperature and its application in imaging systems as a volumetric, safe, contact free and real-time Non-Destructive Testing systems. These imaging systems could be easily integrated in industrial facilities allowing the detection of surface, subsurface and in-depth defects...
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