<p>Recently, Prof. Wei Zheng and colleagues from Sun Yat-sen University have developed a novel nano-polycrystalline hexagonal boron nitride film material, featuring both large-area preparation capability and high luminescence efficiency. This is the first reported pure boron nitride neutron imaging material, which is capable of overcoming the limitations of traditional materials in spatial resolution and gamma-ray suppression. This advancement provides a pioneering impetus for the development of neutron imaging technology toward cutting-edge applications such as microscopic structural observation and radioactive substance detection.</p>