ArticleProgress in additive manufacturing2026
Embedding of taggants in the vat photo-polymerisation additive manufacturing process for anti-counterfeiting measures.
Article in Progress in additive manufacturing, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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4 authors.
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Abstract
The rapid expansion of the additive manufacturing (AM) industry has attracted significant global attention. However, the inherent nature of AM, specifically the direct translation of CAD data into physical components, makes the supply chain highly vulnerable to fraudulent and counterfeit activities. As scanning and reverse-engineering technologies advance, existing authentication methods have become increasingly susceptible to replication, and consequently, unreliable. This article investigates a novel authentication method for the vat photo-polymerisation process (VPP) by introducing a "double-lock" system. This system embeds both a physical hash (randomly distributed taggants acting as physically unclonable functions) and a digital hash (derived from X-ray computed tomography scans) into each component. Several digital hashing methods are proposed, including a combination of taggant spatial coordinates, colour codes, and quadrat counts, creating a signature that demonstrates substantial spatial complexity and resistance to physical replication. The chi-square (χ
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