microjet

A microjet is a very small, high-speed stream of liquid. These jets are typically on the order of tens to hundreds of micrometers in diameter. The technology behind microjets allows for precise deposition of fluids, making them useful in a variety of applications.

The generation of microjets can be achieved through several methods. One common approach involves using piezoelectric actuators that vibrate at high frequencies, causing a small volume of liquid to be ejected. Another method uses thermal actuators, where a rapid heating of the liquid creates a bubble that expands and forces a jet of fluid out. Pressure-driven systems, where a precise amount of pressure is applied to a tiny nozzle, can also produce microjets.

Microjet technology finds applications in areas such as inkjet printing, where it allows for the precise placement of ink droplets onto surfaces. It is also used in biological and medical fields for cell sorting and dispensing of reagents. In manufacturing, microjets can be employed for precise coating, lubrication, and even for creating microstructures. The ability to control the volume and trajectory of these tiny fluid streams makes them a valuable tool for microfabrication and advanced material processing. Research continues to explore new ways to generate and utilize microjets for even more sophisticated applications.