Ac. Tam et al., EXPERIMENTAL AND THEORETICAL-STUDIES OF BUMP FORMATION DURING LASER TEXTURING OF NI-P DISK SUBSTRATES, IEEE transactions on magnetics, 32(5), 1996, pp. 3771-3773
We provide here extended experimental data on the bump shape formed on
Ni-P disk substrate under various laser and substrate surface conditi
ons, and describe a model for the Sombrero-shape bump formation based
on competition between thermocapillary and chemicapillary flows. This
model rationalizes a large body of experimental data and provides insi
ght into how one might tailor bump shapes to specific requirements. Fo
r comparison, laser hump formation on non-Ni-P substrates has also bee
n studied.