Videos corresponding to figures in the Ph. D. Thesis of Phalguni Shah: impact of rod-shaped colloidal suspension drops, and instabilities in spontaneously rupturing colloidal films.
video1: volume fraction 0.35 drop of AR11 rod suspension, when impacted at 1.5 m/s, shows localized solidification.
video 2: volume fraction 0.45 drop of AR11 rod suspension, when impacted at 1.5 m/s, shows solidification and imperfect rebound, where the drop rises up but its bottom remains atatched to the substrate.
video3: a volume fraction 0.35 suspension of colloidal spheres, suspended in 2mM SDS in 30% glycerol+70% water, shows interesting instabilities at the rupture rim, and on the intact film during rupture, when spontaneously ruptured at uncontrolled and low humidity.
video4: a volume fraction 0.35 suspension of colloidal spheres, suspended in 2mM SDS in 30% glycerol+70% water, shows interesting instabilities propagating through the film during rupture, when spontaneously ruptured at uncontrolled and low humidity.
video 5: a volume fraction 0.40 suspension of colloidal spheres, suspended in 4mM SDS water, shows instabilities reminiscent to a wrinkling fabric, when spontaneously ruptured at controlled and high humidity.
video1: volume fraction 0.35 drop of AR11 rod suspension, when impacted at 1.5 m/s, shows localized solidification.
video 2: volume fraction 0.45 drop of AR11 rod suspension, when impacted at 1.5 m/s, shows solidification and imperfect rebound, where the drop rises up but its bottom remains atatched to the substrate.
video3: a volume fraction 0.35 suspension of colloidal spheres, suspended in 2mM SDS in 30% glycerol+70% water, shows interesting instabilities at the rupture rim, and on the intact film during rupture, when spontaneously ruptured at uncontrolled and low humidity.
video4: a volume fraction 0.35 suspension of colloidal spheres, suspended in 2mM SDS in 30% glycerol+70% water, shows interesting instabilities propagating through the film during rupture, when spontaneously ruptured at uncontrolled and low humidity.
video 5: a volume fraction 0.40 suspension of colloidal spheres, suspended in 4mM SDS water, shows instabilities reminiscent to a wrinkling fabric, when spontaneously ruptured at controlled and high humidity.