Science

Scientists have studied new properties of the interaction of light and matter

Ученые исследовали новые свойства взаимодействия света и вещества

Scientists at the National research nuclear University “MEPhI” (NRNU MEPhI) investigated the effect of the interaction “light-matter”, which can be used in the development of light sources of a new type of biosensors, and also to control chemical reactions. The study is published in the journals “Optics Express” and “Proceedings of SPIE”.

Researchers NRNU MEPhI for example, the fluorescence of the organic dye rhodamine 6G has shown the ability to control the interaction localized in a small volume of electromagnetic waves with excitons in matter with unique installation — tunable optical Fabry — Perot microcavities. This will allow you to change fundamental properties of the excited States in the volume of the resonator and to quasiparticles with new hybrid properties — polaritons.

“The key technology used in our work, the localization of the modes of the electromagnetic field in a small volume of tunable microcavities. Unique installation developed in our laboratory allows to control with high accuracy the spatial and spectral distribution of electromagnetic waves in a small volume of space bounded by metallic mirrors. So we get the ability to control the properties of the resulting hybrid quasiparticles that are a superposition of excitation in the substance and eigenmodes of the resonator”, — told RIA Novosti researcher of the Laboratory of nanobioengineering MEPhI Dmitry Dovzhenko.

According to him, research is of fundamental importance, as it allows to investigate in detail the process of formation of such bound States and the dependence of their properties on the conditions of the experiment.

The results obtained by the change of properties of quasi-particles in the substance are also of direct practical use to control the speed of chemical reactions increase distance resonance energy transfer and efficiency of optoelectronic devices.

Today, scientists are working to study the effects of when “light-substance” resonance energy transfer and study the possibility of controlling the process by controlling parameters of the resonator. In addition, they continue the fundamental study of the properties of hybrid quasi-particles formed from the various parameters of the ensemble of particles placed in the microcavities.

Source:

ria.ru

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