Optical circuits from polycrystalline diamond

Two parallel free-standing waveguides made of polycrystalline diamond serve as mechanical resonators. Optical fields (red/blue) are observed to propagate inside of them. Image: KIT/CFN/Pernice.

Pernice group at KIT use polycrystalline diamond for the fabrication of wafer-based optomechanical circuits.

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Quantum vibration sensor from carbon nanotubes

The spin of a molecule (orange) changes and deforms the nanotube (black) mounted between two electrodes (gold). Image: C. Grupe/KIT.

Researchers from the Karlsruhe Institute of Technology and French colleagues from Grenoble and Strasbourg build novel quantum mechanical system.

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Video Interview: Christopher Barner-Kowollik

christopher-barner-kowollik

We talk to Professor Christopher Barner-Kowollik, head of the Macromolecular Architectures group at the Karlsruhe Institute of Technology.

Multicolor, silicon-based LEDs without heavy metals

Liquid-processed SiLEDs: by changing the size of the silicon nanocrystals, color of the light emitted can be varied. Image: F. Maier-Flaig, KIT/LTI.

Scientists of KIT and the University of Toronto have succeeded in manufacturing silicon-based light-emitting diodes.

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Reliable single-photon detectors developed

Devices combine near-unity detection efficiency with high timing resolution and very low error rate.

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Catalytic subsurface etching: digging nanotunnels into graphite

Graphite consists of layered carbon atoms. A metal particle bores into the graphite sample from the edges of these layers. Image: KIT.

Tiny metal balls used to etch graphite tunnels with diameters of only one-thousandth that of a human hair.

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Book Review: Introduction to Polymer Rheology

Introduction to Polymer Rheology front cover

Professor Manfred Wilhelm and Dr. Roland Kadar of KIT review Introduction to Polymer Rheology by Montgomery T. Shaw.