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An international research team has developed a new method of synthesizing miniature light sources. It is based on a special laser which produces millions of nanolasers from a perovskite film in a few minutes. Such lasers look like small disks, work at room temperature and have a tunable emission wavelength from 550 to 800 nm. The high speed and good reproducibility of this method make it promising for the industrial production of single nanolasers as well as whole chains. The study was published in ACS Nano.
Scientists from ITMO University’s Research Institute of Laser Physics have developed a high-power laser with short pulse duration for use in a lunar laser locator. The locator will make it possible to measure the distance between the Moon and Earth with a margin of error of just a few millimeters. This would make it possible to correct calculations of celestial coordinates of the Moon in order to improve the accuracy of satellite navigation systems. An article on the new laser was published in Optics Letters.
Indicator, a popular science website, has recently published its science popularisation ranking. It has evaluated the effectiveness of PR activities of universities participating in Project 5-100 in 2017. The results were based on a questionnaire survey filled in by staff members of the universities’ PR-departments. ITMO topped the ranking, receiving 193 points out of 195 possible. Moscow Institute of Physics and Technology (192 points) and National University of Science and Technology came second and third in the ranking, accordingly (187).
A group of physicists from ITMO University has developed a system that provides optical cooling to nanocrystals. The system, made up of a radiofrequency trap and a laser light source, decreases the kinetic energy of a nanocrystal and lowers it to its quantum limit, at which new properties emerge. This method may prove useful in fundamental research and studies of biological objects within the framework of quantum mechanics. A research paper was published in the Journal of the Optical Society of America B as an editors’ pick.
A team of researchers from ITMO University, headed by Professor Nikolai Rozanov and in collaboration with their Russian colleagues from St. Petersburg State University’s Department of Optics and German colleagues from Uwe Morgner’s Ultrafast Optics Group at Leibniz University (Hannover), has acquired valuable results on the matter of propagation of extremely short optical pulses in resonant mediums.
Scientists from the Netherlands and Russia designed and tested a new metasurface-based technology for enhancing the local sensitivity of MRI scanners on human test subjects for the first time. The metasurface consists of thin resonant strips arranged periodically. Placed under a patient's head, it provides much higher image quality from the local brain region. The results, published in Scientific Reports, show that the use of metasurfaces can potentially reduce image acquisition time, make the procedure more comfortable for patients and acquire higher resolution images to allow diseases to be diagnosed at an earlier stage.