Verification of low dimensional Debye theory by specific heat capacity measurement of nano-particles

为了从实验上验证低维德拜理论，在脉冲管制冷机上用绝热量热计测量了纳米金颗粒的比热容。在相同条件下，测定了块状金的比热容，并与纳米金的结果进行了比较。结果发现，纳米颗粒的结果与块体中的结果不同。尤其是随着温度的升高，这种差异也会增大。这表明，纳米颗粒具有与块体不同的热特性。

To verify low dimensional Debye theory experimentally, specific heat capacity of gold nano-particles was measured by adiabatic calorimeter applying a pulse-tube refrigerator. Specific heat capacity of bulk of gold was also measured in the same condition and compared with the result of the nano-particles. It is found that the result in the nano-particles was different from that of the bulk. As temperature in particular rises, the difference increased. This suggests that the nano-particles have thermal characteristics unlike the bulk.