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New technology for warm white LEDs

27-Feb-2019

Light emitting diodes (LEDs) provide significant energy savings over conventional light sources. In terms of light quality, however, conventional lighting solutions are still superior to LEDs as the latter are unable to reproduce the entire color spectrum. Most importantly, LEDs lack an efficient ...

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Producing polymer structures faster – two processes in one machine

08-Feb-2019

Either fast or precise – both cannot be achieved in the production of the finest polymer structures with the laser. Or maybe they can? Combining stereolithography and multiphoton polymerization should make it possible: Scientists at the Fraunhofer Institute for Laser Technology ILT are developing ...

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New Material to Push the Boundaries of Silicon-Based Electronics

22-Jan-2019

The electronics market is growing constantly and so is the demand for increasingly compact and efficient power electronic systems. The predominant electronic components based on silicon will in foreseeable future no longer be able to meet the increasing industrial requirements.This is why ...

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Elucidating the Atomic Mechanism of Superlubricity

Tribology: Design Rules for Extremely Low Coefficients of Friction

15-Jan-2019

The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity ...

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Tandem Solar Cells – Record Efficiency for Silicon-based Multi-junction Solar Cell

09-Jan-2019

Silicon solar cells dominate the photovoltaic market today but the technology approaches the theoretical maximum efficiency that can be achieved with silicon as the only absorber material. Tandem solar cells, on the other hand, combine several absorber materials, enabling a better energetic use ...

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Pocket-size food scanner

General-use, cost-effective scanning technology that can be easily adapted

07-Jan-2019

According to a study by the environmental organization WWF Germany, ten million metric tons of food are thrown in the garbage every year in Germany despite still being edible. A mobile food scanner will allow consumers and supermarket operators in the future to test whether food items have gone ...

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Novel color sensors are less expensive to manufacture

10-Dec-2018

In the FOWINA project, the Fraunhofer Institute for Integrated Circuits IIS in Erlangen and the Fraunhofer Institute for Silicate Research ISC in Würzburg have developed novel color sensors with a special microlens arrangement. The sensors can be realized directly on the chip and combine multiple ...

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Concentrator Photovoltaics Shows Peak Performance – Module Efficiency Reaches 41.4 %

26-Nov-2018

Concentrator Photovoltaics (CPV) has by far achieved the highest efficiency for the conversion of sunlight into electricity. The basis for this latest achievement lies in the special multi-junction solar cells as well as the perfect interplay between the cell and the module optics. In the ...

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OLED integration in textiles: functional and eye-catching

12-Sep-2018

Organic light-emitting diodes (OLED) are mainly known from televisions and smartphone displays. They can be used as lighting objects in car tail lights or lights. The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP as a partner for customer-specific OLED ...

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From wood waste to high-performance polymers

A transparent and thermally stable polyamide – 100 percent biobased

31-Aug-2018

The natural substance 3-carene is a component of turpentine oil, a waste stream of the production of cellulose from wood. Up to now, this by-product has been incinerated for the most part. Fraunhofer researchers are using new catalytic processes to convert 3-carene into building blocks for ...

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