Molecular Forces Based on the Baker Lectures of Peter J. W. Debye

Experimental status of gravitational-strength forces in the sub-centimeter regime

“…A similar effect, called the retarded Van der Waals force, occurs with dielectric plates and is given by an expression which differs from Eq. 2 only by a numerical factor of order unity [15].…”

Effect of Thin Film Heat Transfer on Meniscus Profile and Capillary Pressure

“…Briefly, this force is electromagnetic in origin and arises from the secondorder perturbation theory applied to the electrostatic interaction between dipoles. 8 Equations (13) and (17) are presented in Figs. 3 and 4 for i7 = 10.…”

“…Since the apparent contact angle increases faster in the real case due to viscous losses, a measurable decrease in capillary pressure is observed. The contact angle in terms of the slop of the interface at 77 = 77, is: (8) It is well known that the vapor pressure over an adsorbed film of a nonpolar liquid is a function of the temperature and the London-van der Waals dispersion force of attraction between the solid and liquid (e.g., Refs. 3 and 4 are of particular relevance).…”

Interaction of colloidal particles

“…The position of a potential maximum as well as that of a potential minimum is the solution to dV/dH ¼ 0, which can be expressed as The left hand side of Eq. (1.94), which depends only on kH, is plotted as a function of kH in Figure 1.19 [23,24]. This curve, which has its maximum value 4exp (À2) ¼ 0.5413 at kH ¼ 2, intersects with a horizontal line with B < 0.5413 at two points kH ¼ kH max (<2) and kH ¼ kH min (>2).…”