The results published in Nature Scientific Reports represent the output of a broad international collaboration, including scientists from Germany, Moldova, Denmark and Australia. "As material scientists we are always in demand to develop nanomaterials that can absorb a wide range of light," explains Dr. Yogendra Mishra. He is leading an independent subgroup of the Functional Materials working group of Professor Rainer Adelung, Institute for Materials Science at Kiel University. This group has expertise in making tetrapods, four-armed zinc oxide structures. "We have now made tetrapods in a new way and created a hybrid material of carbon and inorganic material. It demonstrates the ability to absorb a broad range of wavelengths from ultraviolet to infrared - and it also diffuses light," Mishra explains. "The complex 3D-tetrapod-architecture of our material spreads light in all directions."
This scattering effect of the hybrid material is urgently needed for using laser based lighting in optoelectronic technologies as in automobile industry. "Products of modern light technology should be as bright as possible without producing a lot of useless heat. That is the case with a normal bulb, which have almost become museum artefacts. The LEDs of today are better but powerful laser-based lights would be most efficient," says material scientist Mishra. The reason why Laser based lighting has not yet been realized for a broad application in industry is exactly its power, which could damage the eyes.
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