| abstract |
A kind of article is described, the article includes the colloid of iron oxide nanocrystal chain being configured in chain, and wherein the insertion of nanocrystal chain is used to form in the material of article or is embedded in the conversion medium for converting item color.Material or conversion medium include elastic characteristic, the elastic characteristic allows nanocrystal to show the temporary color determined by the external force intensity being applied on article, material or conversion medium include memory characteristic, the memory characteristic causes the temporary color shown when external force is removed to dissipate, wherein, being dissipated in ultraviolet light for shown temporary color can be observed. |