| 摘要 |
Devices are described that include a component comprised of a material having a structure of R1 - C(O) - NX - R2, wherein each of R1 and R2 is independently a saturated alkyl having between 7-22 carbon atoms or an aryl, X is H or C(O)-Y, Y together with R1 forms a ring. The material is characterized by a single, sharp melting point, thus making it suitable for use, for example, in thermo~mechanical actuating devices or in temperature-indicating devices. Also described are compositions comprising two or more materials each having a structure of Rn 1 - C(O) - NH - R2 wherein, nis an identifying integer corresponding to a material in the composition; wherein for each material n in the composition, Rn 1 and Rn 2 are a saturated alkyl having between 7-22 carbon atoms, wherein for each material n Rn 1 and Rn 2 differ by one carbon atom, and wherein the number of carbon atoms in Rn 2 of each material ndiffers by four or less. |
