The appropriate scanner can read and process the data contained in the label. »Smart labels« can be affixed to goods under production conditions of up to 100 degrees Celsius. But at higher temperatures – such as with laser fusion – they fall apart: the metal components are being manufactured out of stainless steel powder, using a laser at temperatures in excess of 1400 degrees Celsius. Such production conditions precluded the use of radio-based identification – until now.
Recently, researchers from the Fraunhofer-Institute for Manufacturing and Advanced Materials IFAM in Bremen developed a new, non-destructive process. They use the »Rapid Manufacturing« method: A machine produces a component based on a three-dimensional CAD model, building it layer-by-layer directly from the computer. The laser melts off the areas of each metal powder layer that are intended to be solid. Next, the building platform is lowered and the process restarts until the component is completed. Fraunhofer scientists can control this process in a manner that allows the RFID to be installed and completely encased by the material.
»This new process finally puts the intelligence into the metal component. You can store critical information in the radio tags, like the serial number or the manufacture date. So, for example, companies now can make their top-grade replacement parts tamper-proof and resistant to fraud,« explains project manager Claus Aumund-Kopp. If someone tries to remove the chip, they will wind up destroying it in the attempt. And soon, it will be possible to do more than just reading the identification code. Conceivably, it might even be possible to store information during the period of usage. Experts also envision the potential of this process as it relates to sensors or actuators: With the aid of temperature or expansion sensors, it may be possible to record data on thermal or mechanical stresses on the components.
In addition, the new Fraunhofer Additive Manufacturing Alliance will present technologies and services along the entire value creation chain. This includes everything from additive manufacturing technologies and tools manufacturing through to tooling, repair and maintenance. Ten institutes have joined together under the aegis of the alliance (www.generativ.fraunhofer.de).
Claus Aumund-Kopp | EurekAlert!
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Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
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In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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