In-vitro cell treatment with focused shockwaves—influence of the experimental setup on the sound field and biological reaction

Table 2 Cell container materials and their resulting transmission coefficients T _tot for transmission of acoustic pressures through a thin slice of container material (index C) in water (index W)

Cell container material			ρ / kg m ⁻³	v / ms ⁻¹	Z / 10 ⁻⁶ kg m ⁻²s	T _tot / %
Glass			2490	5840	14.54	34
PP	(polypropylene)	@ 25 °C	913	2650	2.42	94.5
PE	(polyethylene)	@ 25 °C	957	2430	2.33	95.3
PS	(polystyrene)	@ 25 °C	1052	2400	2.52	93.6
PVC	(polyvinyl chloride)	@ 25 °C	1386	2330	3.23	86.6
Water		@ 30 °C	996	1509	1.50	100

Material constants from [72, 74, 75]
The total transmission coefficients are calculated using \(T_{\text {tot}} = \frac {4 \cdot Z_{W}\cdot Z_{C}}{(Z_{W}+Z_{C})^{2}}\) and acoustic impedance Z=ρ·v with density ρ and longitudinal sound velocity v of the material

ISSN: 2050-5736