“…The first method is adopted when incorporating biological channels (e.g., AQPs) [48,81,123,124], unimolecular channels (e.g., pillar [5]arenes) [101], or when the channels are extremely small (<5 nm) and thus unstable when standalone (i.e., this method can preserve the structure and functionality of the nanochannels). In the current literature, this type of TFN membrane is sometimes termed as biomimetic membrane [71].…”