What process involves the ejection of a charged polymer fluid onto an oppositely charged surface?

Electrospinning is the process that involves the ejection of a charged polymer fluid onto an oppositely charged surface. In electrospinning, a high voltage is applied to a polymer solution or melt, creating an electric field that causes the polymer to form a fine filament as it is drawn towards a collector which is at the opposite charge. This technique is widely used in tissue engineering to create fibrous scaffolds that mimic the extracellular matrix, providing a supportive environment for cell growth and tissue development.

The ability to control the diameter of the fibers, their alignment, and the porosity of the scaffolds makes electrospinning a versatile method for producing biomaterials intended for various applications in regenerative medicine and tissue engineering. The charged nature of both the fluid and the collector surface is fundamental to the process, facilitating the formation of nanofibers and enabling the production of materials with unique properties suitable for biomedical uses.