DARYOOSH SAEEDKIA, TETECHS INC.Conducting accurate thickness measurements is essential for ensuring consistent quality of products such as plastic bottles and containers; however, measurement techniques are often invasive, destructive, time-consuming and wasteful. Unlike traditional methods, terahertz (THz) technology offers a nondestructive solution when it comes to thickness measurement. Terahertz photoconductive antennas (THz-PCAs) allow for quick, noncontact thickness measurements of both opaque and translucent materials such as plastics, coatings, rubbers and glass. 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