Fig. 1.

Key temperatures of TPP and a special temperature protocol used in our experiments. The melting point $T_{\mathrm{m}}$ of TPP is located at 295 K. LLT takes place below the binodal temperature $T_{\mathrm{B}\mathrm{N}}=230$ K. The transformation kinetics of LLT from liquid I to liquid II can be classified into 2 types: NG and SD type. NG-type transformation takes place between $T_{\mathrm{B}\mathrm{N}}=230$ K and the spinodal temperature $T_{\text{SD}}=215.5$ K, whereas SD-type one takes place below $T_{\text{SD}}=215.5$ K. Since $T_{\mathrm{B}\mathrm{N}}\left(=230\hspace{0.17em}\mathrm{K}\right)$ is located below $T_{\mathrm{m}}$ ($=$295 K), LLT always takes place in a metastable supercooled state. We anneal TPP for $t_w$ at $T_{\mathrm{a}}$ in order to create $S$ fluctuations near but above $T_{SD}$. Then we heat it to $T_{\mathrm{x}}$ for crystallization under influence of $S$ fluctuations. The glass transition temperature $T_{\mathrm{g}}$ is located at 205 K slightly below $T_{\text{SD}}$.