Mechanochromic paper] Paper that changes color when pressed and can be restored to its original color. In the world of cutting-edge science, materials that change color when subjected to pressure have been observed. In the world of elements and molecules, many people may think that such a phenomenon is possible, but in this research, we have succeeded in creating such a phenomenon using paper materials. It would be fun to see how paper, which we use in our daily lives, can change color just by pressing it, but it could also cause problems when the color changes in various ways. Now
