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Physically unclonable functions (PUF) are designed on integrated circuits (IC) to generate unique signatures that can be used for chip authentication. PUFs primarily rely on manufacturing process variations to create distinction between chips. In this paper, we present novel PUF circuits designed to exploit inherent fluctuations in physical layout due to photolithography process. Variations arising...
Lithographic variability and its impact on printability is a major concern in today's semiconductor manufacturing process. To address sub-wavelength printability, a number of resolution enhancement techniques (RET) have been used. While RET techniques allow printing of sub-wavelength features, the feature width itself becomes highly sensitive to process parameters, which in turn detracts from yield...
Photolithography is at the heart of semiconductor manufacturing process. To support continued scaling of transistors, lithographic resolution must continue to improve. At today's volume manufacturing process, a light source of 193 nm wavelength is used to print devices with 45 nm feature size. To address sub-wavelength printability, a number of resolution enhancement techniques (RET) have been used...
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