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Engineering Mathematics
Review of Viscous Flows
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 Particle Adhesion
Van der Waals Force | JKR and Other Adhesion Models | Particle Adhesion & Removal | Effects of Charge | Effect of Humidity | Ultrasonic and Megasonic Cleaning

London-van der Waals Force

Hamaker Constants for Dissimilar Materials

Tables 5 and 6 gives the values of Hamaker constant for a number materials in vacuum and in water.

Table 5. Values of Hamaker Constant for some materials.

Materials

Vacuum

Water

Polystyrene

7.9

1.3

Hexadecane

5.4

-

Gold

40

30

Silver

50

40

Al2O3

16.75

4.44

Copper

40

30

Water

4.0

-


 Table 6. Values of Hamaker Constant for some materials.

Materials

Vacuum

Water

Pentane

3.8

0.34

Decane

4.8

0.46

Hexadecane

5.2

0.54

Water

3.7

-

Quartz (Fused)

6.5

0.83

Quartz (Crystalline)

8.8

1.70

Fused Silica

6.6

0.85

Calcite

10.1

2.23

Calcium Fluoride

7.2

1.04

Sapphire

15.6

5.32

Poly (Methyl Methacrylate)

7.1

1.05

Poly (Vinyl Chloride)

7.8

1.30

Polyisoprene

6.0

0.74

Poly (tetrafluoroethylene)

3.8

0.33



Dr. Goodarz Ahmadi | Turbulence & Multiphase Fluid Flow Laboratory | Department of Mechanical & Aeronautical Engineering
Copyright © 2002-2005 Dr. Goodarz Ahmadi. All rights reserved.
Potsdam, New York, 13699
ahmadi@clarkson.edu