A technique called selective laser etching (SLE) makes it possible to produce 3D structures out of glass. Micronozzles are just one possible use for this technology. The great accuracy and potential for complex geometries that an SLE-made nozzle can achieve, which cannot be done with other technologies, are what make it special. The nozzle size can reach a few centimeters while the smallest channel may have a diameter of only a few micrometers. The nozzle could be used to deliver high-pressure gases and liquids to variable diameter outputs. Fluid dispensing and various printing techniques are examples of potential nozzle usage.
Femtosecond microfabrication technology is applied in microfluidics through 3D laser lithography and selective laser etching (SLE). 3D laser lithography is used to produce micro filters and sensors, while SLE enables the production of complex-shaped microfluidic channels out of fused silica glass with low surface roughness and high precision.
A feasibility study is composed of several steps, including researching methods for fabricating micro-structures, fabricating a micro-structure prototype, measuring and aligning the prototype with technical requirements, and finally preparing a study report.