☆ 4.3 Article

High-order subharmonic injection locking using a rotary topological defect in an oscillator lattice loop

ELECTRONICS LETTERS (2023)

Dynamics of Topological Defects in a Tunnel-Diode Oscillator Lattice Loop

Koichi Narahara

Summary: This study investigates the dynamical behavior of topological defects in a tunnel-diode oscillator lattice loop. Bifurcation analyses were conducted to demonstrate that certain bias voltages eliminate sink-source pair solutions and generate topological defects in the form of dislocations within the rotary pulses. The topological defects move in the opposite direction of the rotary pulses and exhibit sub-harmonic synchronization. Time-domain coherent measurements of a test lattice loop fabricated on a breadboard confirmed the existence of these defects. The results of bifurcation analyses and measurements are reported in this paper.

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN (2023)

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Article Engineering, Mechanical

Vortices nucleation by inherent fluctuations in nematic liquid crystal cells

Esteban Aguilera et al.

Summary: Investigated the nucleation mechanisms and statistical laws of matter vortices in liquid crystal cells, with experimental observations showing qualitative agreement with theoretical findings.

NONLINEAR DYNAMICS (2022)

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Review Physics, Applied

Topological active matter

Suraj Shankar et al.

Summary: This review focuses on topological defects and topologically protected edge modes in active matter, highlighting their distinctive properties in non-equilibrium systems. The review also emphasizes the significance of topological excitations in non-equilibrium settings.

NATURE REVIEWS PHYSICS (2022)

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Article Engineering, Electrical & Electronic