On the Nonlinear Dielectric Behavior of Desoxyribonucleic Acid Fibers at Low Frequencies

Autor:	D. M. White, B. Lassier, A. H. Sharbaugh, C. Brot, S. I. Reynolds
Rok vydání:	1965
Předmět:	Chemical Phenomena Condensed matter physics Chemistry Physical Chemistry General Physics and Astronomy Conductance DNA Dielectric Capacitance Nonlinear system Electrode Physical and Theoretical Chemistry Absorption (electromagnetic radiation) Low voltage Voltage
Zdroj:	The Journal of Chemical Physics. 43:3603-3608
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1696527
Popis:	The dielectric behavior of moist desoxyribonucleic acid fibers at low frequencies has been studied, and is explained phenomenologically. This behavior is nonlinear with respect to the thickness of the sample and to the applied voltage. The experimental results can be reproduced if the conductance of the sample is approximated by a constant term plus a term increasing with the applied voltage. Consequently, at low voltage the behavior appears linear with respect to the voltage, but still depends upon the thickness of the sample; the conductance and capacitance per unit area of electrode are the important quantities. Under this condition (low voltage) a region of absorption has been found, with a critical frequency of 0.014 cps at 25°C and very large apparent dielectric constant (e′≈105). This behavior is interpreted as being due to the formation of an ionic double layer at the electrodes. The nonlinear phenomenon is attributed to the fact that with increased voltage the electrodes become less blocking.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c7c30f79ce80faf0f7206ee5b72a569 https://doi.org/10.1063/1.1696527 Zobrazit plný text záznamu