Faster data transfer through plasmons

Nanowerk  February 22, 2018 Surface plasmon polaritons (SPPs) function like photonic elements, carrying information at high speeds. Researchers in Singapore designed transducers comprising aluminum and gold electrodes, separated by a two nanometer-thick layer of aluminum oxide that acts as an insulating ‘quantum tunneling’ barrier. Electrons that make the quantum leap across this gap will either generate or detect SPPs. By joining two transducers with a plasmonic waveguide, so that one acted as a source and another as detector they observed about 1 in 7 of the tunneling electrons coupling to a SPP. The invention has potential applications in three-dimensional integrated […]

Researchers invented light-emitting nanoantennas based on halide perovskites

Nanowerk  February 12, 2018 Using hybrid perovskite an international team of researchers (Russia, USA – UT Dallas, Australia) managed to combine a nanoantenna and a light source in a single nanoparticle. It can generate, enhance and route emission via excited resonant modes coupled with excitons. The study shows that combination of excitons with the Mie resonance in perovskite nanoparticles makes them efficient light sources at room temperature. In addition, the radiation spectrum of the nanoparticles can be changed by varying the anions in the composition of the material. The research makes the new nanoparticles a promising platform for creating compact […]

A transistor of graphene nanoribbons

Source: Science Daily, November 29, 2017 Graphene becomes a semiconductor in the form of nanoribbons which has a sufficiently large energy or band gap in which no electron states can exist: it can be turned on and off — and thus may become a key component of nanotransistors. However, graphene ribbons with irregular edges may not exhibit the desired electrical properties. An international team of researchers (USA – UC Berkeley, Switzerland) succeeded in growing ribbons exactly nine atoms wide with a regular armchair edge from precursor molecules. After several process steps, they formed the desired nanoribbons of about one nanometer […]