Search by tag «Optical Technologies» 2 results

• ITMO Physicists' New Anti-Forgery Tags Can Hide in Plain Sight

  Researchers from ITMO’s School of Physics and Engineering have developed optical labels made with gold and silicon. The nanostructures’ asymmetric shape determines their optical response to a specific direction of light: the tags become visible and change color from yellow to green only at a certain angle (57-75 degrees) of lateral lighting, while no effect is observed at other angles. This solution will find its applications in the authentication of optical chips, sensors, and other microelectronics. The corresponding paper was published in ACS Applied Optical Materials.

  25.07.2025

• ITMO Physicists Simplify Thin Film Anodization for Allergy Diagnostics

  Researchers from ITMO’s International Research and Educational Center for Physics of Nanostructures have simplified the synthesis of thin films based on anodic aluminum oxide: the process now takes two minutes instead of seven hours and can be used to produce films with specific optical properties. The new method can be applied in sensors for allergy diagnostics, affordable solar cells, and beam splitters for laser distance meters and spectral devices. The method was described in a paper published in Optical Materials.

  27.02.2025