Graphene-inspired bismuth telluride atomic layers could revolutionize cooling and insulation applications

Bismuth telluride and its alloys are unique materials. They are the best thermoelectric materials known today, and they are as important to the thermoelectric industry - for cooling and energy generation applications - as silicon is important to the electronic industry. It has been predicted theoretically that structuring bismuth telluride into crystalline ultra-thin films (with the thickness of few nanometers) would lead to a drastic improvement of the thermoelectric figure of merit, which defines the efficiency of the thermoelectric energy conversion. The improvement comes as a result of the strong quantum confinement of charge carriers and reduction of the thermal conductivity. In addition to their thermoelectric applications, bismuth telluride thin films recently attracted attention as promising topological insulators - a newly discovered class of materials with unusual properties. Researchers have now succeeded in 'graphene-inspired' mechanical exfoliation of atomically-thin crystals of bismuth telluride.

Putin and Chubais discuss nanotechnology

The Government of the Russian Federation has published a transcript of a recent meeting between Prime Minister Vladimir Putin and Russian Nanotechnologies Corporation CEO Anatoly Chubais. They have discussed the work of the Russian Nanotechnologies Corporation in the previous two years, its priority projects, and streamlining the legal basis of the corporation's work and of the overall development of the innovation sector.

A quantum physicists’ stroboscope – resonator emits brief flashes of light for entangled photons

Researchers have come up with a new method enabling the generation of ultrafast flashes of light in very high intensity in rapid succession, as they are needed for the creation of entangled photons. Aside from the quantum computer as a long-term goal, new possibilities in different areas of application are opening up, for instance optical spectroscopy.