Low-temperature heat capacity and dynamic properties of DNA as a quasi-one-dimensional system
B. I. VerkinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRV. Ya. SukharevskiPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRYu. V. TelezhenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRA. V. AlapinaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRN. Yu. VorobyovaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
ABI
Abstract
The heat capacity of DNA films was measured in the temperature range 4.2−400°K. The linear dependence it is observed to have in the range 4.2−180°K makes it possible to treat the dynamic properties of DNA within the framework of the theory of low-dimensional crystals. Experimental data are used to determine the “one-dimensional” Debye temperature θ1 = 560°K(ω0 = 7.6·1013 Hz) and the propagation velocity of elastic oscillations, u = 124 m/sec. A model is suggested for a qualitative analysis of the results.
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