Abstract: A system and method of forming an authenticatable integrated circuit comprising altering a material property of a semiconductor layer of the integrated circuit such that the semiconductor layer has physically unclonable functions (PUFs). The semiconductor layer may be subjected to ion implantation to form amorphous regions including the PUFs. The PUFs emit an electromagnetic signature having frequencies in the terahertz range when the PUFs are stimulated or interrogated by an authentication apparatus. The electromagnetic signature corresponds to identifying information of the integrated circuit. The integrated circuit can thus be authenticated without altering the electronic elements of the circuit and without the presence of discernable or discoverable identifying features.

Abstract: A pigment composition comprising an intimate mixture of an organic pigment and fumed silica is prepared which exhibit improved coloristic characteristics including excellent chroma, color strength and enhanced color flop when incorporated into in polymeric systems, such as plastics or surface coatings, for example inks and paints. Also provided are coating compositions and plastic articles that are pigmented with a tinctorially effective amount of the inventive pigment composition. A particular embodiment of the invention relates to pigments useful in automotive coatings.

Abstract: A pigment composition comprising an intimate mixture of an organic pigment and fumed silica is prepared which exhibit improved coloristic characteristics including excellent chroma, color strength and enhanced color flop when incorporated into in polymeric systems, such as plastics or surface coatings, for example inks and paints. Also provided are coating compositions and plastic articles that are pigmented with a tinctorially effective amount of the inventive pigment composition. A particular embodiment of the invention relates to pigments useful in automotive coatings.