Engineers from the National University of Singapore, in collaboration with Cambodian heritage authorities, have unveiled a revolutionary preservation technology: the Graphene Nano-Tattoo. These transparent, ultra-thin sensors are applied directly to the surface of ancient stone carvings to monitor microscopic vibrations and structural shifts caused by tourism, climate change, and seismic activity.
The sensors are virtually invisible to the naked eye and provide real-time data to a centralized AI system that can predict potential collapses or erosive damage before it occurs. This non-invasive method marks a major shift in heritage tech, replacing bulky traditional monitoring equipment that often damaged the very surfaces it was meant to protect. The technology is currently being piloted on the famous 'Churning of the Ocean of Milk' bas-relief at Angkor Wat.