Van der waals forces between immersed particles

Single and Multiple‐Step Dip‐Coating of Colloidal Maghemite (γ‐Fe2O3) Nanoparticles onto Si, Si3N4, and SiO2 Substrates

“…The Hamaker constants of each substrate are 1.59 eV, [37] 1.04 eV, [38] and 0.41 eV [38] for Si, Si 3 N 4 , and SiO 2 , respectively. Those of octane and the nanoparticles are 0.28 eV [34] and 2.59 eV, respectively (see Appendix).…”

Theoretical Analysis of Interaction Energy in Alginate-Capped Gold Nanoparticles Colloidal System

“…The knowledge of the dielectric spectra over the entire frequency range for all of the individual materials comprising the system is required to calculate the values. For Au-Au core the constant is found to be 45.3 x 10 -20 J [10]. Several calculation techniques were described in the literatures [11][12].…”

Effect of pH and hydration on the normal and lateral interaction forces between alumina surfaces

“…The Hamaker constant for alumina surfaces interacting in water was taken as A awa = 4.8 × 10 −20 J, an average of several values reported in Refs. [35][36][37][38].…”