Dielectric behaviour of frozen DNA in solution

In this article, measurements are reported on ice and frozen DNA solutions between 100 Hz-10 MHz. Pure ice is shown to exhibit: single relaxation beha viour, which confirms previous work taken over a more restricted frequency range. The frozen DNA solution displays double-dispersion behaviour. One di spersion centred around 3 kHz is due to a defect mechanism while the other, centred around 2 MHz, may be attributed to counterion flour through the wa ter immediately adjacent to the DNA molecule. Bioelectro-magnetics 20:40-45 , 1999. (C) 1999 Wiley-Liss, Inc.