Study on ice construction of normal saline under alternated electric field by dielectric method

In this paper, experiments were carried out to clarify the effects of an electrostatic field on ice structure. 0.9% NaCl solution is used as the test sample. During experiment, the test sample is frozen in two different conditions, one is in non-field, the other is in different frequencies alternated electric field (the frequencies range from 50 Hz to 20 MHz). The experiment´s results showed that alternated electric field could affect the ice permittivity, in alternated electric field the ice permittivity is significant more than that in non-field. According to the results, the ice structure was studied by the method of dielectric physics. A kind of composite ice structure model is supposed, and assumes it to be composed of salty ice and pure ice. The analysis indicated that the alternated electric field can be capable of affecting the ice structure significantly. Under the alternated electric field, the percent of salty ice increases significantly, on the contrary, the pure ice decreases. For biological materials cryopreservation, The Experiment results have very positive implications.