We emphasize that pearling is predominant during horizontal translation and depreciates during the ascent of an inclined plane (due to the resolved component of gravity). Ferrofluids were originally discovered in the 1960s at the NASA Research. We substantially extend the basic study regarding the motion of the ferrofluid droplets to address state-of-the-art parametric variation. The ferrofluids actually contain tiny particles (10 nm diameter) of a magnetic solid suspended in a liquid medium. We demonstrate unique evolutions of the shape of ferrofluid droplets during their motion over horizontal and inclined planes assisted by an applied field. The field strength, magnet velocity and concentration of nanoparticles control the motion, deformation and pearling. In recent years, researchers have prepared ferrofluids, which have the fluid properties of a liquid and the magnetic properties of a solid.

The spheroidal shape transforms into oblate, pear shape and tear drop with a symmetric corner and finally tears into daughter globules, famously known as pearling. The particles are coated with a soap or detergent to prevent them from clumping together. The shape of the ferrofluid droplet evolves continuously with the variation of different parameters. A ferrofluid (from the Latin ferrum, meaning iron) is a liquid which becomes strongly polarised in the presence of a magnetic field.It is a colloidal mixture comprising extremely small magnetic particles suspended in a synthetic oil. The contact angle varies dynamically with the motion of the droplet over horizontal and inclined planes. A ferrofluid is composed of IONPs, a surfactant that coats the magnetic IONPs to prevent agglomeration, and a carrier liquid that suspends the IONPs. While doing so, we describe some uncommon phenomena such as pearling, which has not been reported to date in connection with the motion of ferrofluid droplets. We demonstrate unique evolutions of the shape of ferrofluid droplets during their motion over horizontal and inclined planes assisted by an applied field.