| abstract |
The present invention generally pertains to the field of measurement and indicating technology, and relates to a time-temperature indicator and a method of making and using the same. More specifically, the time-temperature indicator of the present invention includes one or more metal layers or metal-containing layers and at least one doped polymeric layer in direct contact with the metal or metal-containing layers, wherein the dopant added to the polymer is an acid, A photothermographic acid or phototactic base) and / or one or more polymeric layers wherein the polymer is functionalized with an acidic or latent acidic group, or a basic or latent basic group, Or one or more polymeric layers containing metal particles and a photopotential acid or photolabile base, or one or more polymeric layers containing metal particles, wherein the polymer is functionalized with a latent acidic or latent basic group, And a time temperature indicator. |