Solvent-triggered reconfiguration of optical physical unclonable functions (opens in new tab)

Optical physical unclonable functions provide artificial fingerprints through randomized light–matter interactions, but are limited by static architectures that lack adaptive defense capabilities. Although reconfigurable optical physical unclonable functions based on phase-change materials have been proposed to overcome this constraint, their reliance on light or heat makes them susceptible to unintended environmental activation. Here, we propose a solvent-triggered reconfiguration strategy f...