This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
MetalOrganic Framework . Iron projecting into the pore of the tubelike metalorganic framework center looking down its roughly nanometerwide opening attracts the light hydrocarbon molecules that surround it to varying degrees These varied attraction levels could make the framework more efficient at hydrocarbon separation than current