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Schematic diagram of (A) Electrochemical sensors with molecularly imprinted polymers as recognition units simultaneously detecting two amphetamine-type stimulants; (B) π-π stacking between the target molecules and the template molecules as a force for target doping recognition and fast Fourier transform square wave voltammetric determination of methamphetamine stimulant drug. (Reprinted with permission from [50,51]). Copyright 2022 and 2019, Elsevier Publishing).
