TY - JOUR N2 - This paper presents an analysis of use of ultrasonic standing wave in cell separation from bodily fluids based on the example of erythrocyte separation from plasma. It describes movement of red blood cells in plasma under the influence of the acoustic field (whose forces result from interaction of red blood cells with plasma as the vibrating medium) and under the influence of resistance forces in Stokes’ and Oseen’s approximation. The general properties of solutions of the motion equation are given. The solutions for the parameters of the ultrasonic wave and blood cells which are interesting in terms of practical applications in medical diagnostics are discussed. Time constants of the cell transportation to the regions of stable equilibrium in the field of ultrasonic standing wave are estimated. The formulas which determine the time needed to obtain the assumed concentration increase in plasma in nodes and/or anti-nodes of the standing wave are derived. L1 - http://www.czasopisma.pan.pl/Content/112099/PDF/aoa.2019.128499.pdf L2 - http://www.czasopisma.pan.pl/Content/112099 PY - 2019 IS - No 2 EP - 366 DO - 10.24425/aoa.2019.128499 KW - ultrasound standing wave KW - medical diagnostics KW - body fluids KW - blood KW - red blood cells KW - cells separation KW - plasma A1 - Włoch, Andrzej A1 - Czyż, Henryka A1 - Jasiński, Tadeusz PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 44 DA - 2019.06.13 T1 - Separation of Cells From Plasma by Means of Ultrasonics SP - 357 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/112099 T2 - Archives of Acoustics ER -