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. 2015 Nov 23;5:16942. doi: 10.1038/srep16942

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Self-oscillatory mode frequency as a function of the bias current calculated by numerically solving Eq. (1) for the straight (a) and tapered (b) nanowire STOs; blue squares - first bullet mode, red triangles - second bullet mode. Lines are guide for eyes and green arrows show the resonance frequency of the edge mode in the linear regime f_SWR = ω₀/2π.