Compression of microspheres: Theory and application
Compression of microspheres: Theory and application
Compression of microspheres: Theory and application
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Calculation <strong>of</strong> Energy<br />
Calculation <strong>of</strong>:<br />
• Expended energy: d<br />
• Elastic energy: <br />
• Elastic plastic loading index:<br />
1 <br />
<br />
Energy / volume [mJ/µm³]<br />
6 SiO 2<br />
:<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
x = 500nm<br />
x = 1000nm<br />
0.2 0.4 0.6 0.8 1.0<br />
Max. relative deformation<br />
Rel. force<br />
1.0 Polystyrene (EPL = 0.67)<br />
Silica (EPL = 0.87)<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
0.0<br />
0.0 0.2 0.4 0.6<br />
Rel. deformation<br />
J. Paul PiKo-Workshop Siegen 2012<br />
Elastic-plastic index<br />
1.0<br />
0.8<br />
0.6<br />
SiO 2<br />
:<br />
x = 500nm<br />
x = 1000nm<br />
0.4<br />
0.2 0.4 0.6 0.8 1.0<br />
Max. relative deformation<br />
10
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