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. 2015 Jul 6;12(108):20141358. doi: 10.1098/rsif.2014.1358

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© 2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 5. — Phase-oscillator reduction. (a) Coupling functions and for a pair of interacting spheres. The corresponding parameters are a/d = 0.01, r₀/d = 0.5, β = π/2, l/d = 2, Λ = λd/f^drive = 1. (b) Amplitude of coupling functions for different spring stiffnesses. Computed amplitudes of (c) and (d) , as well as (e) the stable equilibrium phase difference Δ_S, shown as functions of rotor–rotor spacing 2 ≤ l/d ≤ 35 and offset angle 0 ≤ β ≤ π/2.

Inline graphic — Phase-oscillator reduction. (a) Coupling functions and for a pair of interacting spheres. The corresponding parameters are a/d = 0.01, r₀/d = 0.5, β = π/2, l/d = 2, Λ = λd/f^drive = 1. (b) Amplitude of coupling functions for different spring stiffnesses. Computed amplitudes of (c) and (d) , as well as (e) the stable equilibrium phase difference Δ_S, shown as functions of rotor–rotor spacing 2 ≤ l/d ≤ 35 and offset angle 0 ≤ β ≤ π/2.