# The blistering of a viscoelastic filament of a droplet of saliva

## TL;DR

This paper presents a fluid dynamics video demonstrating the breakup of a saliva droplet, highlighting the formation of a viscoelastic filament, blistering phenomena, and phase separation resulting in nanometer-sized biopolymer fibers.

## Contribution

It provides visual evidence and analysis of the breakup process of saliva droplets, emphasizing the role of viscoelasticity and phase separation in biopolymer fiber formation.

## Key findings

- Viscoelastic filament formation during saliva droplet breakup
- Blistering behavior observed in the filament
- Nanometer-sized biopolymer fibers resulting from phase separation

## Abstract

A fluid dynamics video of the break up of a droplet of saliva is shown. First a viscoelastic filament is formed and than the blistering of this filament is shown. Finally, a flow induced phase separation takes place nanometer sized solid fiber remains that consist out of the biopolymers.