Liquid marbles

Liquid marbles

Internship Description

Interestingly, when a drop of water is rolled on a powder comprising hydrophobic particles, of size varying from nanometer to millimeter, particles adsorb onto the liquid-vapor interface, creating what are known as 'liquid marbles'.1 Those liquid marbles can roll around on flat surfaces - hydrophobic or hydrophilic, collide with each other without releasing water, or coalesce when pushed harder.
Recently, we observed that the rates of evaporation of water from liquid marbles could be higher or lower in comparison to bare water drops depending on the choice of hydrophobic particles. To understand what factors control these phenomena, we will conduct systematic experiments varying sizes, and surface chemistries of the particles. We will also apply analytical models of mass transfer to explain the experimental findings.

 References:

1. https://www.nature.com/articles/35082026​

Deliverables/Expectations

The VSRP intern will work with a senior graduate student and learn the following skills:
Laboratory experiments: wet chemistry (silanation of glass beads), optical imaging
Theory: data analysis, data plotting

We expect the intern to be driven by curiosity, hard working, and thrive in a multicultural work environment.​

Faculty Name

Himanshu Mishra

Field of Study

Environmental and Materials Science