Fig. 2: Fabrication and integration process of the printed PUF core into the PCB.
From: Hybrid low-voltage physical unclonable function based on inkjet-printed metal-oxide transistors
a Structuring by laser ablation of the PUF core circuit including routing strips, resistors, I/O and transistor terminals. b Inkjet-printing of the EGT layers, such as In2O3 (channel), electrolyte (gate insulation), and top gate (PEDOT:PSS). c Flip-chip adopted mounting process of the inkjet-printed PUF core onto the adapter PCB using conductive adhesive.
