Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7139249 | Sensors and Actuators B: Chemical | 2018 | 8 Pages |
Abstract
Characteristics of electrical parameters (characteristic frequency fc, shape factor α, resistance at zero frequency R0 and resistance at infinite frequency Râ) in swine flowing blood have been clarified under various flow rates by multiple-frequency electrical impedance measurement to obtain the physical interpretations for the influence of blood flow rate. In order to quantitatively evaluate the experimental results, the conventional Hanai mixture formula for static colloids has been modified from the viewpoint of blood flow-dependent factors which are RBC (red blood cell) orientation, RBC deformation and EDL (electrical double layer) thickness around RBCs. The experimental results are compared with the theoretical evaluations by the modified Hanai mixture formula. This formula is applicable to evaluate the characteristics of electrical parameters of flowing blood since the small errors for fc, α, R0 and Râ between the experimental and theoretical results which are only efcâ¯=â¯3.4%, eαâ¯=â¯19.3%, eR0â¯=â¯3.1% and eR1â¯=â¯1.7%. Blood flow-dependent factors (RBC orientation, RBC deformation, and EDL thickness) are clarified to be accountable for the variation of electrical parameters of flowing blood.]
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Jianping Li, Daisuke Kikuchi, Achyut Sapkota, Masahiro Takei,