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. 2023 May 29;14:3078. doi: 10.1038/s41467-023-38856-0

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Fig. 5 — a Measured V₁ (green), showing nonlinearly increasing signal amplitude demonstrating nonlinear intermodulation of applied signals I₁ (yellow) and I₂ (red). b Measured V₁ (green) with positive polarity and V₂ (blue) with negative polarity, demonstrating simultaneous rectification of two applied out-of-phase square wave signals on terminal 1 and 2 (not shown).