The adhesion-induced deformation and the removal of submicrometer particles

Excimer Laser Induced Removal of Particles from Hydrophilic Silicon Surfaces

“…The deformation area can be calculated using the JKR model [20] but this does not appear suitable for PSL particles [21]. We use the equations given in these papers, plus experimental deformation data on PSL [21,22], to calculate the adhesion forces of 0.2pm PSL and SiOz on silicon substrate surfaces; the PSL contact radius was found [22] to increase slowly with the residence time of the particle on the surface but our residence time, invariably less than 3 hours, was too short to cause a noticeable change in the contact radius. The results are given in the Table I.…”

Physico-chemical mechanisms governing the adherence of starch granules on materials with different hydrophobicities

“…Another mechanism may be that the water content of starch increases with RH (Fig. 8), leading to a high plasticity [32] which permits deformation of the starch granules and more intimate contact with the substrate [31,33].…”

Hydrodynamic particle removal from surfaces

“…Contact radii were estimated by scaling contact radii data for PSL spheres adhering to silicon (with native oxide) in air presented by Rimai et al [21] and Krishnan et al [22]. The data sets are used to determine an expression for average contact radii as a function of particle diameter and to determine scaling factors that account for the differences in medium and settling time between their systems and the system considered here.…”

“…Rimai et al presented contact radius, a, as a function of particle size for infinite settling time while Krishnan et al presented contact area, ca, as a function of settling time for constant particle size. The data from Rimai et al were used to determine a Hamaker constant for their system, A Rimai , assuming that their contact radii data can be described by the Maugis and Pollock model [21,22]. The data from Krishnan et al were used to determine the ratio of the contact area for the experimental settling time, t exp = 18.75 h, to the contact area for infinite time.…”

“…These values are based on 500 simulations of each condition [9]. Table 1 Values of the Hamaker constant ratio, the contact area ratio, and R A,t determined from the data of Rimai et al [21] and Krishnan et al [22], and considering variations in their data ffiffiffiffiffiffiffiffiffiffiffiffi …”