Search by tag «Nanoparticles» 48 results
ITMO Physicists Discover Way to Achieve Stimulated Raman Scattering in Isolated Silicon Nanoparticles
An optimized design of silicon nanoparticles provides а more efficient transition from spontaneous to stimulated Raman scattering. The proposed approach also allowed researchers to reduce the size and volume of particles supporting the stimulated Raman scattering regime by tens of times compared to their existing counterparts. The researchers also designed a platform in the form of a silicon nanoparticle on a sapphire surface that can be applied in sensing, detection, and thermometry, opening up new opportunities for future applications in biomedicine, targeted drug delivery, and as an alternative to electronic devices in optical chips. The results of the research were published in Nano Letters.
03.08.2020
Scientists Suggest Using Gold Nanoparticle Metasurfaces to Determine Substance Molecular Composition
This will make it possible to create compact devices that will accurately determine molecular composition of a liquid or gas, and help identify potentially dangerous chemical compounds. The results of the work carried out by researchers from ITMO University and Ben-Gurion University of the Negev, Israel have been published in Nanomaterials.
21.07.2020
Scientists Use Lasers and Gold Particles to Turn Titanium Oxide Into Nanocomposite for Photocatalysts
Oxides of different metals often serve as photocatalysts in various systems such as air purification, reactions of water decomposition and even in the production of self-cleaning surfaces for glass and mirrors. The physical-chemical properties of such materials can be improved by adding nanoparticles, which turn an ordinary oxide into a nanomaterial with new capabilities. To successfully perform this, however, it is necessary to understand the processes going on as a nanocomposite is being formed, and to be able to control them. ITMO University researchers together with their colleagues from France and the USA have demonstrated how a femtosecond laser can be used to tune the structure and nanocomposite properties for titanium dioxide films filled with gold nanoparticles. The paper was published in ACS The Journal of Physical Chemistry C.
12.05.2020
Scientists Propose New Nanoparticles That Can Potentially Be Used to Treat Cancer with Magnetic Fluid Hyperthermia
A group of Russian scientists have synthesized manganese–zinc ferrite nanoparticles that can potentially be used in cancer treatment. Due to their unique magnetic properties, the particles can serve as deactivators of affected cells while having almost no negative impact on healthy tissues. The results have been published in the Journal of Sol-Gel Science and Technology.
10.03.2020
ITMO University Scientists Found a Way to Release Drugs from Polymer Carriers in a Non-Invasive Way
The concept is based on the interaction of resonant semiconductor iron oxide Fe2O3 nanoparticles with light. They can get heated locally by a laser and convert the absorbed light into heat. If you modify the shell of the polymer containers (capsules) that are widely used as a carriers for the delivery of bioactive compounds in cells and irradiate them with a laser, the heat will deform the capsules and the loaded compounds will be released at the desired location and time. The research was published in Laser and Photonics Reviews.
12.02.2020
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
Pharmacological Constructor: Scientists Propose Method for Synthesising Calcium Carbonate Particles with Different Geometry for Targeted Drug Delivery
A group of scientists from ITMO’s Faculty of Physics and Engineering in collaboration with their colleagues from the First Pavlov State Medical University of St. Petersburg and Tel Aviv University conducted a complex analysis of the growth conditions of porous particles of calcium carbonate of various morphology that can be used for delivering bioactive substances to cells and tissue. The samples were tested on a model of glioma cells. The results were published in ACS Sustainable Chemistry and Engineering. ITMO.NEWS contacted Landysh Fatkhutdinova, a Master’s student at ITMO’s Faculty of Physics and Engineering, and her research advisor Mikhail Zyuzin, and learned about the prospects of the research’s application in biology and medicine.
16.01.2020
ITMO University Researchers Create Complex Nanoparticles with Laser Impulses
An international research group including ITMO University specialists has experimentally demonstrated a method of generating complex nanoparticles that can be applied in nanophotonics for light adjustment purposes. It has the potential to change the way such materials are produced today and reduce the price of nanoparticle production, which would foster the development of microelectronics. The paper was published in Advanced Functional Materials.
10.01.2020
ITMO Researchers Describe Carbon Dot Structure, Discover Red Emission Amplification Method
Fluorescent carbon nanoparticles, also known as carbon dots, were first described in the early ‘00s. But even today, scientists around the globe still have not reached a consensus on their inner structure and emission process. Carbon dots have a great deal of potential applications due to their biocompatibility with the human body and the ease and low cost of their production as compared to semiconductor quantum dots. Researchers from ITMO University have published two research papers in which they put forth their answers to the burning questions about carbon dots.
28.08.2019
Russian and Swedish Scientists Work Together on New Biomedical Product
ITMO University scientists in collaboration with their colleagues from the Swedish University of Agricultural Sciences (SLU University), Uppsala, Sweden, have developed biocomposites made of proteins based on natural spider silk and optically active nanoparticles. What is remarkable about the new material is that it combines the properties of natural silk fiber and synthetic particles. The biocomposite has unique mechanical characteristics and can give a detectable optical response when exposed to infrared radiation, which makes it a potential candidate for biomedical applications. This article was published in ACS Applied Materials & Interfaces.
23.08.2019