Search by tag «Nanostructures» 23 results

• Researchers Develop Nanostructure for Detection of Spiral Molecules via Twisted Light

  Scientists from ITMO University, Zhejiang University, and the Ioffe Institute have developed a metasurface capable of identifying the direction of the rotation of circular polarized light waves with a near-100% accuracy. Its artificial coating reflects leftward-spun light and allows rightward-spun light through. The structure is a mere several hundred nanometers thin, allowing it to be used even in the most advanced electronic devices. The technology should accelerate medical testing, simplify the detection of spiral molecules, such as DNA, and provide new prospects for experimental physics research. Results of the study have been published in Laser & Photonics Review.

  11.11.2024

• ITMO Solution Prevents Counterfeiting of Glass Products

  Researchers from ITMO University have suggested a method of creating colored patterns with an affordable, domestically-produced laser. Compared to others, the new method makes it possible to create smaller separate patterns within a single bigger one, which are harder to forge. The technology, described in an article published in Optics and Laser Technology, will help prevent production of counterfeit glass products, such as medical vials and test tubes.  

  04.03.2024

• Power Without Electricity: Nanodevice For Optical Computers Developed at ITMO

  Physicists from ITMO and St. Petersburg Academic University have collaborated to develop a device that can be used as a transistor in optical computers – it can create an electric field in nanostructures without the use of any power sources. In the article published in Light: Science & Applications, the research team describes the theory behind it as well as the experiments they conducted on a nanoantenna to demonstrate the capacities of the new device.

  21.09.2023

• ITMO's Monday Science Roundup #16

  In today’s digest of research news from ITMO University, you’ll read about exciting new research in the field of nanoscience, find out how to attend the latest conference for robotics (or chemistry – or both) buffs, and learn some fascinating insights into this year’s Nobel Prizes and the curious science of biomimetics.

  17.10.2022

• Bright Ideas: ITMO Researchers’ Dynamic Nanostructure Achieves 35x Light Amplification

  The staff of ITMO University’s Faculty of Physics have developed a dynamic nanostructure that changes its optical properties in response to external stimuli. At its core is a polymer that expands and contracts based on its temperature. The researchers have shown that nanostructures containing silicon nanoparticles can amplify light seven-fold – and the number blows up to 35 when the material is combined with gold. What’s more, the polymer can change its form an unlimited amount of times. Its potential uses include the development of automated heat sensors and various other smart devices.

  13.10.2022

• How Biomimetics Helps Scientists Create Materials With New Properties

  Biomimetics is an approach that helps scientists develop new materials and devices based on principles present in nature. We’ve talked about how it’s applied in robotics, but there are many other fields in which it’s also used. For example, physicists working with lasers make use of biomimetics to edit and enhance properties of various materials.

  06.10.2022

• ITMO Scientists Develop Nanostructured Temperature Indicator Based on Carbon Dots and Nanocellulose

  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.

  01.06.2022

• Asymmetry VS Sepsis: Russian-Italian Research Team Developing Optical Sensor for Early Diagnosis

  Every year, sepsis takes the lives of approximately six million people around the world. In recent times, it has also become a common COVID-19 complication. In order to treat the disease effectively and quickly, it needs to be diagnosed in the early stages using high-quality sensors. In the fall of 2021, a joint research team from ITMO University and CNR-Nanotec (Italy) won a grant from the Russian Ministry of Science and Higher Education and from the Italian Ministry of Foreign Affairs and International Cooperation for the development of this technology.

  07.02.2022

• ITMO Scientists Develop Shape-Shifting Microcapsules from Liquid Metals

  Researchers from ITMO’s Faculty of Physics and ChemBio Cluster have created liquid-metal nanoparticles that can reversibly change their shape when exposed to laser radiation. The discovered effect holds great promise for ultra-compact optoelectronic devices, smart sensors, and signal systems. The results of the study are published in Physical Chemistry Letters.

  20.09.2021

• Picture of the Week: AgInS Quantum Dots in CaCO3 Calcite Phase

  These structures can become an alternative to semiconductor cadmium nanocrystals, which will allow using them as a transport system for drug delivery. They make it possible for substances to reach their target locations without affecting the cells, organs, and tissues that they shouldn’t.

  11.01.2021