Search by tag «Resonance» 5 results

• Researchers from ITMO Discover New Photonic Properties of Dielectric Resonators

  We live in a world powered by resonance: there are resonant antennas in our smartphones, and microwaves heat up our food using resonant absorption of electromagnetic radiation by water molecules. Even bridges and skyscrapers remain intact because they were designed to account for the resonance-based nature of various phenomena, such as earthquakes. It is no wonder then that dielectric micro- and nanoresonators are expected to bring about the age of optics, when all electronic devices will be replaced with optical ones. Recently, scientists from ITMO University have contributed to this field by demonstrating new photonic properties of resonators, which make it possible to control their parameters in sensors, detectors, and antennas for different devices. Their study was published in Materials Today. 

  19.01.2023

• ITMO University Scientist Sergey Makarov Receives President of Russia Award

  Sergey Makarov, Head of ITMO University’s Laboratory of Hybrid Nanophotonics and Optoelectronics and senior research associate at the Faculty of Physics and Engineering, became a laureate of the President of Russia Award for Young Scientists in the Field of Science and Innovation. The official results have been announced today, February 3, in Moscow, with the related decree published on the website of the president of Russia. The award recognized the physicist’s contribution to the studies of optical properties of resonant semiconductor nanoparticles the use of which can help improve solar cells and optical microscopes, and, in the future, advance in the fight against cancer as well as the creation of optical computers. More about the researcher’s work and its results in this article by ITMO.NEWS.

  03.02.2020

• Physicists from ITMO University Complete Tests of New Class of Resonators

  Physicists from ITMO University, Ioffe Institute, and the Australian National University have examined a new mechanism of producing high-quality optical resonators. It is based on the mutual destructive interference of two low-quality optical states in one resonator allowing for secure “trapping” of light in various materials even at small scale. The theoretical results of this study were confirmed experimentally, laying the basis for new miniature devices: effective sensors, optical filters and nonlinear light sources. The research was published in SPIE Advanced Photonics.

  26.02.2019

• Physicists Discover New Way of Resonance Tuning for Nonlinear Optics

  A research team from ITMO University and the Australian National University has discovered that different metasurfaces exhibit the same behavior provided a symmetry breaking is introduced to their unit cells (“meta-atoms”). Asymmetry of meta-atoms results in high-quality (high Q) resonances in the transmittance spectra of metasurfaces. Such resonances are capable of multiple amplification of external signals. By manipulating the asymmetry, scientists were able to control the resonances and thus a metasurface’s optical response, which is highly desirable for practical applications. The results of this research were published in Physical Review Letters.

  14.11.2018

• Physicists Propose Reversible Adjustment of Nanoparticles Color

  A team of ITMO University scientists and their international colleagues has developed a method of reversible adjustment of the nanosized light sources radiation color. While earlier studies suggested that the radiation color could only be specified during the nanoparticle synthesis stage, the new research reveals that it also can be changed in fully-formed particles. Stability and electromagnetic resonances of the particles are retained during this adjustment, which opens new possibilities for production of optical chips, LEDs, and optoelectronic devices. The findings are published in Nano Letters.

  17.08.2018