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| Particle Adhesion | |
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| Van der Waals Force | JKR and Other Adhesion Models | Particle Adhesion & Removal | Effects of Charge | Effect of Humidity | Ultrasonic and Megasonic Cleaning | |
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JKR and Other Adhesion Models JKR Model Equation (1) in nondimensional form may be restated as
where the nondimensional external force and contact radius are defined as
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,
Variation of the nondimensional contact radius with the
nondimensional force is shown in Figure 2. Note
that for 
, Equation (14)
and Figure 2 shows that 
.
The corresponding resistance moment about point O in Figure 1 as a function of nondimensional force is given as
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(16) |
Figure 3 shows the variation of the resistance moment as predicted by the JKR model. The corresponding maximum resistance moment then is given by
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(17) |
and
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(18) |
The resistance moment at 
is 
. Also
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(19) |