Search by tag «Publication» 119 results
A research team from ITMO University, Australian National University, and Tel Aviv University has experimentally demonstrated a new approach to the creation and control of configurable photonic structures with fixed topology. The key lies in the physical properties of resonators.
Scientists from ITMO University developed unclonable anti-counterfeiting labels, which are based on silicon nanoparticles modified with a laser. It’s impossible to change the color, structure, and location of the particles: these parameters are random, which makes the label safe from counterfeiting. In order to check if it’s authentic, all you need to do is upload its picture into a special program.
Researchers from ITMO’s ChemBio Cluster have developed a mechano-bactericidal toothpaste based on calcium carbonate. Tests have demonstrated that it is two times more efficient than conventional antiseptic toothpastes in removing the bacterial dental plaque that is often at the root of many oral diseases, including cavities.
We live in a world of portable blood glucose monitors, smart clothes, tiny sensors, and nanometer chips. All of that is not the limit, especially with the appearance of 2D materials based on dichalcogenides of transition metals. However, these materials are still hardly applicable in low temperatures. Read on to discover how researchers from ITMO have suggested this problem could be solved.
Flexible Electronics and Sensors: Researchers Develop Improved Method for Copper Micropattern Printing
Scientists from ITMO University and the Institute of Chemistry of St. Petersburg State University have developed a more affordable and efficient method that makes printing copper micropatterns on a glass surface 100 times faster. The resulting micropatterns can be used in various devices, such as chemical sensors, flexible electronics, and anti-theft systems.
Researchers from ITMO’s ChemBio Cluster and University of Toronto discovered a nonlinear dependence of photoluminescence of carbon dots on the composition of a water and dimethyl sulfoxide solvent. The color of the same dot sample changes depending on the polarity of solvent it is placed in. Thanks to this discovery, the researchers were able to develop a portable wide-range (from -68°C to +19°C) temperature indicator, which can be used to control the storage conditions of chemical, pharmaceutical, and food products.
Researchers from ITMO’s SCAMT Institute have demonstrated the possibility of using the sol-gel method to produce various porous monolithic structures from magnetite nanoparticles. The new method can produce multifunctional materials with complex hierarchical structures, such as the xero-, cryo-, and aerogel of magnetite. Thanks to this approach, it is possible to control the composition of the resulting porous materials through the relation of their compounds’ concentrations. One of the method’s most promising applications is biomedicine – the new aerogel can be used to stop bleeding and xerogel can serve as a repository for drug transportation.
A group of researchers from ITMO University, the Australian National University, and the Friedrich Schiller University Jena (Germany) has for the first time demonstrated effective generation of higher harmonics in silicon metasurfaces. This result was achieved due to resonant states with long lifetimes. The new discovery brings closer the creation of attosecond radiation sources based on semiconductor nanostructures. Ultrashort pulse lasers which earned their pioneers the Nobel Prize in Physics in 2018 make it possible to excite and explore very rapid processes in nature and matter. This opens new horizons for understanding ultrafast physics and faster information recording.
In accordance with the standards of flexible electronics, the new testing device is made from hydrogel and liquid metal, while data processing is handled by machine learning algorithms. Currently, the device consists of a potentiostat, an electrochemical cell, and a connected computer, but all the components will soon be a unified system complete with a user-friendly app. How does the device work? And what kind of tests can it already perform? Read on to find out.
Nanozymes are artificial enzymes made up of various nanoparticles. In contrast to natural enzymes, nanozymes demonstrate all the same properties while being easier to produce and work with. However, the hardest step in developing nanozyme-based drugs and diagnostic systems is modeling the necessary properties of their particles before synthesis. Researchers from ITMO’s SCAMT Institute have solved this task by developing DiZyme, the first platform in the world that predicts the catalytic activity of nanozymes.