When illuminated with coherent light, optical scattering media will produce an interference pattern called speckle. The details of a speckle pattern strongly depend on the incident illumination, position and shape of the scatterers in the medium. This sensitivity makes scattering media excellent physical unclonable functions (PUFs) that can be utilized as security tokens [1,2] . The unclonability of such media depends on technological constraints. We investigate to what extent state-of-the art direct laser writing (DLW) can falsify the assumption of unclonability. We present out fabrication results and analyse the unclonability through optical response .
|Publication status||Published - 23 Jan 2018|
|Event||Physics@Veldhoven 2018 - NH Conference Center Koningshof, Velhoven, Netherlands|
Duration: 23 Jan 2018 → 24 Jan 2018
|Period||23/01/18 → 24/01/18|