EurekAlert  March 6, 2024 Optical properties of afterglow luminescent particles (ALPs) in mechanoluminescence (ML) and mechanical quenching (MQ) have diverse technological applications. An international team of researchers (South Korea, USA – Stanford University) designed ALPs for the development of a wearable and rewritable photonic display system as a communication toolbox under dark conditions or underwater environments with limited communication. The system demonstrated long-lasting MQ after short ML along the handwritten trajectories with mechanical pressure and the written content could be easily erased by short UV light irradiation, preserving the system integrity with the high reproducibility of ML and MQ responses. […]