Two-oscillator model of trapped-modes interaction in a nonlinear bilayer fish-scale metamaterial

We discuss the similarity between the nature of resonant oscillations in two nonlinear systems, namely, a chain of coupled Duffing oscillators and a bilayer fish-scale metamaterial. In such systems two different resonant states arise which differ in their spectral lines. The spectral line of the first resonant state has a Lorentzian form, while the second one has a Fano form. This difference leads to a specific nonlinear response of the systems which manifests itself in appearance of closed loops in spectral lines and bending and overlapping of resonant curves. Conditions of achieving bistability and multistability are found out.Comment: 14 pages, 6 figure

Optical bistability involving planar metamaterial with broken structural symmetry

We report on a bistable light transmission through a planar metamaterial composed of a metal pattern of weakly asymmetric elements placed on a nonlinear substrate. Such structure bears the Fano-like sharp resonance response of a trapped-mode excitation. The feedback required for bistability is provided by the coupling between the strong antiphased trapped-mode-resonance currents excited on the metal elements and the intensity of inner field in the nonlinear substrate.Comment: 4 pages, 4 figure

Morphometric parameters of mammary glands in women of different body types in the normal condition and in case of tubular breast deformity

Objective — to reveal the incidence of tubular breast deformity and to compare macromorphometric breast data with the constitution of women who need aesthetic breast correction. Material and Methods — There was conducted macromorphometry of the mammary glands in 101 women using the Body Logic system, as well as anthropometry and somatotyping with indication of sthenic, ectomorph and endomorph body types. Results — Among women with aesthetic problems of mammary glands, tubular breast deformity was revealed in 17.6% of sthenics, 23.5% of ectomorphs, and 58.8% of endomorphs. The Norwood Index, as an objective criterion of tubularity, had the largest value in endomorph women. Conclusion — Endomorph women were more susceptible to the development of tubular breast deformity in comparison with women of other body types

Visualization 3: Control of dissipative solitons in a magneto-optic planar waveguide

Evolution of two dissipative solitons in the magneto-optic planar waveguide system with four conducting wire Originally published in Optics Letters on 01 February 2017 (ol-42-3-531

Visualization 2: Control of dissipative solitons in a magneto-optic planar waveguide

Evolution of a dissipative soliton in the magneto-optic planar waveguide system with three conducting wires Originally published in Optics Letters on 01 February 2017 (ol-42-3-531

Visualization 1: Control of dissipative solitons in a magneto-optic planar waveguide

Evolution of a dissipative soliton in the magneto-optic planar waveguide system with a single conducting wire Originally published in Optics Letters on 01 February 2017 (ol-42-3-531