What is the name of the process that involves ejecting a charged polymer fluid onto an oppositely charged surface?

The process of ejecting a charged polymer fluid onto an oppositely charged surface is known as electrospinning. This technique utilizes an electric field to draw charged polymer solutions or melts into fine fibers, which are simultaneously deposited on a target surface. The electric field causes the polymer jet to elongate and reduce in diameter as it travels to the collecting surface, allowing for the production of nanofibers.

Electrospinning is widely used in tissue engineering and materials science for creating scaffolds that mimic the extracellular matrix, promoting cell adhesion and growth due to their high surface area and porosity. It is distinct from other techniques such as freeze drying, melt molding, and stereolithography, which do not involve the same mechanism of charge-driven deposition to create fiber structures.