A research team from the Shandong University (China), University of California at Riverside and the National Laboratory Lawrence (USA) has developed a new type of multy times reusable paper on which you can write with the help of light waves. In this paper of  a "new type" special nanoparticles that can change color under the influence of the ultraviolet part of the light spectrum are used. The finest coating containing these nanoparticles can be applied to almost any surface materials. Besides, the erase process of such "paper" occurs during the heating its temperature till 120 degrees Celsius.