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«    May 2018    »










DateDate: 10-05-2018, 07:07

Popular and beloved by many auto travel services Uber today presented new information about one of its unique developments devoted to the creation of a unique type of "flying taxi" - it is a question of the prototype eVTOL. Working on it for a long time, a specialized team of Uber is ready to share new information and news on the project, thus already showing an early opportunity to provide users with air travel that can be converted into a full taxi service already in 2023 in the US .
The concept of a flying passenger electricron is essentially a cross between a passenger helicopter and a drone, controlled by a fully automatic artificial intelligence system. Uber presented the first version of the prototype at the annual Los Angeles exhibition Uber Elevate Summit, where the company had a significant expansion of the range of services and products.
In addition, the company noted that it is ready to provide full data to the US Federal Aviation Administration regarding all technical aspects and safety level of the use of this drone, thus marking a high level of device safety. The mission of Uber, which is to improve environmental safety and provide new ways of movement, apparently this time took a new course towards a truly comprehensive improvement of the idea.
In addition, Uber claims that in 2020 it intends to obtain permission from local authorities in Los Angeles to begin conducting public tests of its drones - given the fact that California as a whole is the most loyal state in the US in relation to such tests, few have doubts that the company will not get permission. It remains only to wait for further technical information regarding the eVTOL passenger elec- trode and new concept art!

DateDate: 10-05-2018, 07:04

A research team from the St. Petersburg National Research University of Information Technology, Mechanics and Optics (ITMO) developed the first of its kind a controlled light source based on a nanoscale diamond crystal. The conducted experiments showed that the presence of a diamond crystal almost doubles the intensity of the light emitted by such a source and allows it to be controlled without the need for additional nanostructures. The key to all this is artificially created defects in the crystal structure of diamond, and this technology can be used to create future quantum computers and communication optical networks.
Studies in the field of modern nanophotonics are conventionally divided into two directions - the creation of active dielectric nanodiamonds and the creation of controlled sources of photons. As a basis for nano-antennas, metallic particles are usually used on the surface of which plasmons actively arise. However, a high level of optical losses and heating of metals during work force scientists to look for alternative options. Therefore, scientists from ITMO have been actively exploring the possibility of using dielectric materials in nanophotonics for some time, they have already successfully created nano-antennas from silicon and Perovski.
Nano-diamonds, due to their tiny sizes, have some amazing properties. The diamond itself has a very high refractive index of light, high thermal conductivity and low chemical activity. And if in artificially create defects in diamonds, called nitrogen vacancies, then such a crystal acquires additional properties. The nitrogen vacancy (Nitrogen-Vacancy, NV) arises at a place where one carbon atom is replaced by a nitrogen atom. The direction of rotation of the remaining free electron is easy to control with the help of light and, therefore, a vacancy can be used as a quantum bit, a qubit capable of storing quantum information.
Scientists from ITMO determined that the level of light radiated by nanodiamond can be increased by combining the luminescence spectrum of the NV center with the frequency of the optical resonance of the nanocrystal itself. This can be achieved by placing a vacancy in a strictly defined place and giving the crystal itself a special form.
"Usually, to enhance the flux of light emitted, a complex system of optical resonators is used," write the researchers. "We managed to get a similar effect without using any additional elements. At the same time, we managed to practically double the speed of controlling the work of a light source, using only the usual laws of physics. "
Scientists conducted their experiments with crystals, in which there were several nitrogen vacancies. But their theoretical calculations have shown that a crystal in which only one nitrogen vacancy will be present will work as a highly efficient and controlled source of single photons, which can become an active element of photonic logic elements and other devices. Taken with

DateDate: 10-05-2018, 07:01
Not far from Copenhagen in the middle of the protected forests will be built a wooden 45-meter tower in the form of a spiral.
The creators of an unusual object is the Danish architectural firm Effect, StroyObzor reports.
The highlight of the idea is the construction of wood. The spiral structure will open up a stunning panoramic view of the forest.
Finish the construction plan by the end of autumn.