The use of OLEDs in ultra-low-power wearables

Flexible OLEDs provide designers with a virtually unlimited tool for designing and integrating new area lighting. Their unique features such as flexibility, transparency, polychromy and segmentation offer special advantages. In particular, the use of OLED microdisplays in the form of data eyeglasses in production and logistic areas allows required information to be displayed directly in the user's work area and thus to be ergonomically integrated into the user's motion sequences. The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP presents an ultra-low-power OLED microdisplay, which is particularly suitable for displaying simple information in wearables. It also convinces with its extremely energy-saving design.

Energy Harvesting: Energy self-sufficient sensors of the future

In times of increasing demand for autonomous sensors and systems with autonomous power supplies, energy harvesting is an attractive solution. In addition to current developments in the field of wearables, the Fraunhofer FEP presents a demonstrator of energy harvesting solutions using deposited AIN layers.

Gas sensors of future generations

The combination of gas sensor technology and electronics in compact microsystems that require little energy and can be manufactured cost-effectively is challenging developers. New developments such as sensor arrangements made of polyimide film create additional applications and markets for the gas sensors of future generations. Sensor developments from the Fraunhofer Institute for Physical Measurement Techniques IPM are used in food chain management, in automobiles, in process control or in biotechnology. Demonstrators are presented at the trade fair.

Surface structuring using ultra-short pulsed laser radiation

In order to specifically influence surface properties such as haptics or adhesion, surface structures can be modified using ultra-short pulsed laser radiation. The production of functional surfaces, as they are used in the medical or biotechnical field, can be achieved by high-precision, periodic nanostructuring of the surfaces. At the Fraunhofer Institute for Laser Technology ILT, such nanostructures for functional surfaces are generated using ultra-short pulsed laser radiation, which also produces aesthetically pleasing surface effects. At the Hannover Messe, the Fraunhofer Institute for Laser Technology ILT will exhibit demonstrators in the form of butterflies that have been processed using laser-induced periodic surface structures (LIPSS).

Structuring processes for the transfer of product protection features

In cooperation with the Erich Utsch AG, the Fraunhofer Institute for Material and Beam Technology IWS Dresden has developed a structuring process that efficiently and safely transfers product protection features to vehicle registration plates during the embossing process. The basis technology is »Direct Laser Interference Structuring« (DLIP), which divides a coherent laser beam into two or more beams and superimposes them in a controlled manner on the embossing surface. The special feature of the developed process is that it produces a DLIP product protection feature in a fraction of the time currently required. In this way, the product protection feature can now be manufactured under normal conditions. The Fraunhofer IWS will be exhibiting an example of a vehicle registration number.

EOSS® sputtering system

With the development and construction of the coating platform EOSS®-sputtering system (Enhanced Optical Sputter System), the Fraunhofer Institute for Coating and Surface Technology IST has created new possibilities for the deposition of highly demanding optical coatings, which are characterized in particular by extremely low defect coatings as well as highly complicated layer designs with up to several 100 layers with extreme precision and uniformity of the coating. At the Hannover Messe, Fraunhofer IST presents an ultra-precise optical interference filter manufactured with EOSS® technology.

Ultra-lightweight metal mirror through additive manufacturing

The Fraunhofer Institute for Applied Optics and Precision Engineering IOF is exhibiting an ultra-lightweight metal mirror produced with the aid of additive manufacturing. By means of selective laser melting and the use of new materials, the carrier structures of such metal mirrors can be manufactured with 60% weight savings; with even comparable or better properties than conventional solids. This allows the use for space applications or fast moving scan systems.

The Fraunhofer Group for Light & Surfaces

Further information about the Hannover Messe 2019 and on the exhibits displayed by the Fraunhofer Group for Light & Surfaces can be received on a regular basis on our homepage under "Press & Events".

The Fraunhofer Group for Light & Surfaces combines the expertise of six Fraunhofer Institutes. The institutes combine coordinated competences in the fields of laser manufacturing processes, laser beam sources, measurement technology, medicine and life sciences, optical systems and optical manufacturing, EUV technology, process and system simulation, materials technology, micro- and nanotechnology, thin-film as well as plasma and electron beam technology.