Nature, Published online: 24 June 2026; doi:10. 1038/d41586-026-01896-9 An inexpensive, porous polymer membrane helps to separate raw crude oil, without heat or selective coating. Heavy hydrocarbons self-assemble inside the pores to create channels that are likely to be less than 2 nanometres wi...

Source: [Nature](https://www.nature.com/articles/d41586-026-01896-9)

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