Search by tag «Publication» 197 results

• Scientists Propose New Type Of Terahertz Solid-State Laser

  A team of scientists from ITMO and Vladimir State University have proposed a new type of a solid-state terahertz laser. According to their research, such laser will be more efficient compared to existing devices, as well as allow stepless frequency tuning. In future, the proposed model which is based on the use of gallium-nitride quantum dots can lay the groundwork to creating a compact solid-state source of terahertz radiation that can be effectively applied in medicine, security systems, and other fields. The results were first published in ACS Photonics journal, and a separate review of the research was included in Nature’s “News and Views”.

  11.01.2018

• ITMO Physicists Use Radiofrequency Trap to “Freeze” Nanocrystals

  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.

  28.12.2017

• Nanoscale Super-Resonator Extends Light Lifetime

  Scientists designed the first subwavelength dielectric resonators for light trapping at nanoscale that appears to be the simple silicon cylinder which is a hundred times thinner than a human hair. Such a structure is capable of trapping light ten times longer than any conventional resonator. Along with a simple shape and small size, this new resonator is a promising basis for the design of powerful nanolasers, biosensors, and various light transmitting devices. The results were published in Physical Review Letters.

  18.12.2017

• New technology allows safe MRI-diagnostics for people with implants

  An international research team has developed a device capable of improving the performance of MRI units. The technology is based on local redistribution of a magnetic field with the help of a metasurface made of metal resonators. It was proven experimentally that the metasurface is capable of reducing the power required to produce high-quality images using an MRI unit. The use of MRI units of lower intensity makes it possible to make MRI diagnostics safe for people with medical implants. The results of this research are published in the latest issue of the Journal of Magnetic Resonance.

  05.12.2017

• ITMO Scientists Develop Gene Analysis Software to Combat Superbug Viruses

  Researchers from ITMO University and the Center of Physical and Chemical Medicine have developed an algorithm capable of tracking the spread of antibiotic resistance genes in gut microbiota DNA and revealed additional evidence of resistance gene transfer between different bacterial species. The method can not only contribute to the development of effective therapy schemes, but also curb the spread of superbugs. The results of the research were published in Bioinformatics journal.

  13.11.2017

• Scientists Complete Research on Ultra-Short Pulses in Resonant Mediums

  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.

  10.11.2017

• ITMO Scientists Prove Skyrmion Laser Manipulation

  In recent years the leaders of the global semiconductor industry - companies such as Intel and IBM - have faced inability to accelerate the speed of modern computing systems by increasing the density of microprocessors per unit area. This is caused by fundamental physical limitations. However, it initialized the search for new models and methods of their implementation. Electronics of the future will be based on this research. One of the fields that scientists suggested was spintronics and its subdivision - skyrmionics, which studies exotic magnetic ring formations called skyrmions. They were first obtained in a laboratory in 2010. In the future they may find use in development of more efficient memory chips. Like graphene in the field of nanomaterials, skyrmions can lead the way to go beyond 10-nanometer technological process of chip production. Researchers at ITMO University are also working in this field and have recently managed to demonstrate in theory that properties of skyrmions can be controlled using external laser radiation. The results of this work were published in the Physical Review Letters. 

  12.10.2017

• New Nanoobject Construction Method Opens Road to Complex Optics

  ITMO University scientists have developed a new approach to nanoobject construction, one that provides the opportunity to study and predict how deformations and defects in the crystal lattice affect the optical properties of semiconductor nanocrystals. This model allows them to calculate both the linear and non-linear optical properties of various nanoobjects such as: nanorolls, nanorods, nanoplates and others. The method can be used to create optical materials and devices with new functionalities with uses in drug delivery, chiral exciton-based devices and chiral catalysis devices, and areas such as biosensing and spintronics. Results of this research were published in Nano Letters and used in the writing of other articles in ACS Nano.

  02.10.2017

• Optoelectronics On Quantum Dots: Review By ITMO Researchers

  Today, TV sets based on quantum dots are becoming a common thing, which means that one of the most interesting quantum technologies invented in the 1980s is being gradually introduced in our everyday life. Thanks to the development of colloid synthesis, quantum dots are now applied in many optoelectronic devices that can already compete with their regular counterparts - photovoltaic elements, LEDs, photon detectors. So, what are the key advantages of this technology, and are the new devices ready for mass production? What are the relevant issues that scientists will have to solve in the nearest future? A group of researchers from ITMO University answered these questions in a review on the new concepts and progress in studying quantum dots published in Journal of Materials Chemistry A - a title by the British Royal Society of Chemistry.

  21.09.2017

• ITMO Scientists Help Link Alzheimer’s to Lack of Energy in Immune Cells

  An international scientific team that includes scientists from ITMO University has discovered why a mutation or lack of TREM2 protein in the nervous system of immune cells increases the likelihood of developing Alzheimer’s disease. It turns out that in these cases, immune cells cease to receive nourishment and begin to “digest” themselves. The research was published in Cell journal.

  08.09.2017