The purpose of the article is to introduce materials Virtual memorial people Shevchenko University fallen war «HEROES DO NOT DIE...» into scientifi c circulation. These are stories about members community Taras National Kyiv, who died in for independence Ukraine, starting 2014, and showed civic patriotism, courage sacrifi ce. Collective historical memory formed precisely on these ideas. researc...

We present an effective medium theory for resonant plasmonic nanoparticle systems. By utilizing the notion of dressed polarizability to describe dipolar particle interactions, we show that even highly concentrated, resonant plasmonic particles can be correctly described by the effective medium theory. The effective permittivity tensor of a nanoparticle monolayer is found explicitly and the resu...

Making materials that display angle-independent structural color requires control over both scattering and short-range correlations in the refractive index. We demonstrate a simple way to make such materials by packing core-shell colloidal particles consisting of high-refractive-index cores and soft, transparent shells. The core-shell structure allows us to control the scattering cross-section ...

We have fabricated a series of thin (~50 nm) erbium-doped (by ion implantation) silicon-rich oxide films in the configuration that mitigates previously proposed mechanisms for loss of light emission capability of erbium ions. By combining the methods of optical, structural and electrical analysis, we identify the erbium ion clustering as a driving mechanism to low optical performance of this ma...

This editorial is the second in our BEER Spotlight Editorial Series, where we intend to shed light on important emerging topics business that think deserve more scholarly attention, both and beyond. Specifically, aim focus hot future-oriented related ethics, environment responsibility, which have relevance importance, expect gain traction attention over coming period. We sincerely hope these ed...

Using the vector-wave multiple-scattering method we have calculated the photonic band structures of AB3 and B3 crystals composed of perfect metal spheres in air. It is shown that AB3 photonic crystal contains a large photonic band gap and B3 photonic crystal has more than one gap when the filling ratio of metal spheres exceeds a threshold. The multiple photonic gaps of the B3 structure are usef...

Many open motor skills, for example in team sports and combat sports, are executed under mild to severe conditions of instability. Therefore, over the past two decades, coaching professionals and athletes have shown increasing interest in training routines to enhance the physical prerequisites for strength performance in this regard. Exercise scientists have identified instability resistance tr...

Background: Neuronal antibodies that show immunoreactivity across a broad range of species are important toolsfor comparative neuroanatomy. Nonetheless, the current antibody repertoire for non-model invertebrates is limited.Currently, only antibodies against the neuropeptide RFamide and the monoamine transmitter serotonin areextensively used. These antibodies label respective neuron...