Physicists have learned to calculate the properties of nanoparticles of arbitrary shape

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Scientists from St. Petersburg and Australia have created a program that allows you to calculate the properties of nanoparticles of arbitrary shape and use them as a basis for computers and medical devices of the future, RIA Novosti reported . This is stated in an article published in the journal  ACS Nano .

“As we know, nanoobjects can be used as separate quantum structures, and for assembling more complex quantum superstructures.The structuring of such nanoblocks will further facilitate the creation of new generation optical devices,” said Anvar Baimuratov, a physicist at the ITMO University in St. Petersburg, whose the press service of the university said.

In recent years, scientists are actively creating and studying the properties of so-called metamaterials – artificial structures from a variety of individual pieces or nanoparticles that can interact in an unusual way with light or other forms of electromagnetic radiation. Metamaterials, as physicists now believe, will form the backbone of ultra-fast light computers of the future and other futuristic gadgets.

Strictly speaking, metamaterials are not the invention of man – similar to them crystals and structures occur on the wings of many butterflies of “metallic” color, on the shells of many other insects, the wings of birds and even in the famous blue folds on the muzzles of baboon-mandrills.

As noted by Nikita Teplyakov, another physicist from St. Petersburg, the properties of such nanostructures are studied today exclusively in the course of experiments – scientists change the shape of nanoparticles, their size and location in the hope of discovering materials with unique or more interesting properties.

Such a “blind” search allows you to create many interesting metamaterials, but it does not allow you to create them quickly and in advance to know in which direction you need to move. Russian physicists and their colleagues from Australia took the first step to eliminate this problem by creating a technique that allows calculating the optical properties of nanoparticles of arbitrary shape.

This technique, as Teplyakov explains, is based on the same principles that are used in the theory of relativity to describe the structure of space-time. This approach allows you to “untwist” complex three-dimensional nanoobjects, for example, nano-scribes, into flat sheets and other simple figures in a curved, curved space whose properties are much easier to calculate than in the original form.

The ability to predict the properties of such structures, as scientists hope, will accelerate the creation of various chemical catalysts, sensors of various molecules and computers of a new generation in which information will be transferred by means of light particles or through the spin of electrons.

 

Continue at: https://scientificrussia.ru/news/rossijskie-fiziki-nauchilis-vychislyat-svojstva-nanochastits-proizvolnoj-formy

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