Laser differs from conventional mechanical glass engraving, first of all, in its method, accuracy, dimensions and its purpose. Suffice it to say that its parameters are measured in nanometers, which corresponds to about one thousandth of the thickness of a human hair.
A unique laser technology developed by Russian scientists representing the country's leading physics institutes will help in the future in the creation of ultra-precise circuits.
The main role in this process is assigned to the femtosecond laser. To focus its beam at the desired point, it passes through a glass microsphere and a special optical trap. Initially, the molten glass foams and bumps form. The second stage is treatment with an alkaline solution, as a result of which the tubercles are "washed out" and in their place funnels 20 nanometers deep are formed.
As a result of the experiment, the scientists managed to make an inscription on the glass measuring 100 x 20 nm (width, depth) - ICP, translation into English of the abbreviation of one of the leading participants in the project - the Russian Institute of Chemical Physics.
This technology will find its application in the field of microfluidics or microfluidics. Her field of activity is the study of microflows of liquids. In particular, the channels created using laser nano-engraving can be filled with a special liquid that connects the elements into a single circuit.