Abstract
This study was carried out to study the mechanisms of freezing-point depression and re-crystallization in the freezing and thawing of living tissues. We used a capillary tube and micro-channel chip as the tissue models, and the experiments were conducted by directional solidification method. The experiments of the freezing process showed the relationship between the parition coefficeint and the initial concentration of NaCl solution. From the observation of the melting process, there is a possibility that re-crystallization occurs depending on the solute concentration and the injected volume of water.