Title :
Low Frequency Dielectric Properties of Human Blood
Author_Institution :
Phys. Dept., King Abdulaziz Univ. Jeddah, Jeddah, Saudi Arabia
fDate :
6/1/2011 12:00:00 AM
Abstract :
Nano- and microparticles in human blood affect drastically the charge transfer CT through the viable fluid. Low-frequency dielectric properties of the blood, characterized by CT of β-dispersion type, are widely investigated with special stress on physical mechanisms. However, no publication in the literature deals with the presence of α-dispersion in human blood. In the present study, a mechanism associated with α-, β-, and γ-dispersions is presented. The dielectric losses (electrical conduction) phenomenon is also discussed with special emphasis on the distribution of relaxation times. These losses cause problems with low-frequency dielectric measurements, thus, they are correlated with the famous empirical Col-Cole factor, (1-α). A Gaussian distribution of relaxation times is suggested and found to be exponentially related with (1-α). The results suggest new diagnostic and therapeutic methods for blood disorders.
Keywords :
Gaussian distribution; bioelectric phenomena; biomedical measurement; blood; dielectric losses; dielectric relaxation; electrical conductivity; medical disorders; permittivity; α-dispersions; β-dispersion; γ-dispersions; Gaussian distribution; blood disorders; charge transfer CT; diagnostic methods; dielectric losses; electrical conduction phenomenon; empirical Col-Cole factor; human blood; low frequency dielectric properties; low-frequency dielectric measurements; microparticles; nanoparticles; relaxation times; therapeutic methods; Blood; Dielectric constant; Dielectric measurements; Dispersion; Humans; Nanobioscience; $alpha, beta$ and $gamma$-dispersions; Cole-Cole factor; dielectric properties; human blood; relaxation times; Algorithms; Blood; Blood Platelets; Dielectric Spectroscopy; Electric Conductivity; Erythrocytes; Humans; Leukocytes; Models, Biological; Normal Distribution;
Journal_Title :
NanoBioscience, IEEE Transactions on
DOI :
10.1109/TNB.2011.2159734