The experts from Fraunhofer ILT will be presenting technological highlights and the latest developments in laser-based manufacturing for batteries and electronics at electronica 2024:
The embedding of sensors in additively manufactured components opens up promising new possibilities for the real-time monitoring of components. The milling head presented here was additively manufactured using Laser Powder Bed Fusion (LPBF) at the Fraunhofer Institute for Laser Technology ILT.
Strain gauges were printed into the recesses of the milling head jaws using the aerosol jet process, which enable the forces acting on the milling head to be recorded.
Fraunhofer ILT in cooperation with Fraunhofer ISIT is developing a process to deposit polycrystalline silicon directly onto temperature-sensitive circuits (e.g. ASICs). This allows new applications, for example, MEMS sensors manufactured directly on the ASIC. That way the component size can be reduced as well as disturbances from parasitic capacities in the bond wires avoided. Further potentials of the process, e.g., are the multi sensor integration. The production of crystalline silicon layers under CMOS-compatible conditions on an ASIC wafer opens up innovative perspectives for MEMS IC integration.
Interposers for high-performance electronics are created by metallizing the micro-holes. Selective laser-induced etching (SLE) can be used, for example, to produce blind and through-holes with a high aspect ratio and different shapes.
Disk-shaped microresonators made of quartz glass, produced using selective laser-induced etching (SLE, left) and after laser polishing (right). Microresonators are optical structures with a size-dependent resonance frequency that are used, for example, in sensor technology and spectroscopy. The dimensions of the disk are approximately 100 µm in diameter and 15 µm in height.
A 100 mm lens with a radius of curvature of 103 mm is shown, on which a paint mask was created by means of direct laser lithography using a 5-axis system, which was then metallized and lifted. The 5-axis direct laser lithography system, which was set up at the Fraunhofer ILT, makes it possible to apply lithographic paint masks to surfaces of almost any shape.
Find out more and talk to our experts at the Fraunhofer joint stand in Hall B4, booth 141!
Fraunhofer Institute for Laser Technology ILT