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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)

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

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

  1. Material constants from [72, 74, 75]
  2. 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
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Journal of Therapeutic Ultrasound

ISSN: 2050-5736