Search by tag «Nano Letters» 15 results

  • Researchers Note Topological Effects in New Waveguide Metamaterial

    A novel waveguide-based metamaterial, suggested by physicists from ITMO University and their colleagues from University of Chile, has been shown to exhibit topological states. Upon contact with the edge of a sample, the light that passes through the lattice is nearly never distributed inside the structure, unlike in traditional waveguide gratings. The findings were published in Nano Letters. 


  • ITMO Scientists Present A Way to Control Light-Matter Coupling in Next-Gen Optical Devices

    Paving the way to next-gen optical devices, where information is transmitted with light particles, researchers from ITMO University have suggested a method to bind light and matter more efficiently. The study was described in an article published in Nano Letters. 


  • Improving Lasers: ITMO Scientists Suggest a New Way to Couple Light and Matter

    A new approach has been suggested at ITMO to enhance interaction of light and matter during metamaterials production. Compared to conventional methods, the novel approach requires less precision and relies on cheaper equipment, while producing more compact and sensitive lasers. The study was described in an article published in Nano Letters. 


  • Optical Innovations: ITMO Researchers Create Controllable On-Chip Topological States

    A research team featuring scientists from ITMO University and the City University of New York has successfully created controllable topological states that can be selectively excited on a silicon chip. This is the first time that such an effect was induced in the infrared range and inside a structure just a few microns in size. As proved in the article published in Nano Letters, the flexible control mechanism, as well as its on-chip implementation, can serve as a foundation for disorder-robust optical microchips.


  • ITMO Scientists Suggest Cheap Way to Control Optical Signals With Halide Perovskites

    Halide perovskites are a relatively new group of materials that are used in solar cells, diodes, scintillators, and other devices. One of their main advantages is their availability and ease of production. They are also characterized by the stable bound state of an electron and an electron hole that makes up an exciton. By connecting an exciton to light in a photonic crystal plate, the researchers were able to reach record optical nonlinearity values, which makes the plates a promising tool for controlling optical signals and, in the future, can render them useful in optical computers. The article describing the experiment was published in Nano Letters.


  • ITMO Researchers Suggest All-Optical Data Processing Method Using Heating

    Metal-organiс frameworks (MOFs) are a new class of compounds that is famous for its unique properties. They have been considered a functional material for gas adsorption, industrial membranes, and catalysts; however, researchers from ITMO have gone further and decided to zone in on MOFs’ optical properties. In a recent paper, they demonstrated that thanks to MOFs’ flexibility, these properties can be changed when subjected to lasers. This new effect can pave the way for all-optical data encoding, transfer, and storage.


  • New Plant-Based Drug Testing System to Help Cut Down on Animal Testing

    In the fall of 2019, Aleksandra Predeina, then a first-year Master’s student at ITMO came to Vladimir Vinogradov, head of ITMO’s SCAMT Institute and expressed a desire to make an art & science research project. Two and a half years later, this collaboration has resulted in a unique testing system for nanopharmaceuticals that will make it possible to significantly cut down on animal testing. Read on to learn all about the scientific breakthrough born from a passion for art. 


  • Discovered Ultrafast Optical Effects in Metasurfaces Bring Scientists Closer to Next-Gen Devices for High-Speed Information Processing

    Working on a project of the Russian Science Foundation, ITMO scientists together with their colleagues from China, Australia, the US, and France have delivered experimental proof that dielectric silicon metasurfaces can rapidly change their optical properties under the influence of short light pulses. The discovered effect offers new prospects for cutting-edge computing devices.


  • ITMO Researchers Generate Laser Radiation in Anapole Modes

    ITMO University researchers in collaboration with scientists from the Australian National University and Korea University have demonstrated the generation of laser radiation in anapole states (modes) for the first time. In the future, this might help develop compact sources of laser radiation such as lab-on-a-chip devices. 


  • ITMO Scientists Enhance Multiphoton Processes in Perovskite Metasurfaces

    Researchers placed a polymer on a thin perovskite film and, using lithography, created a metasurface consisting of prolonged parallelepipeds. In the future, this will help create highly efficient visualizers for infrared radiation.