Fig. 2: Design rationale of hierarchical nanochannel systems.
From: Hierarchically engineered nanochannel systems with pore-in/on-pore structures
Typical hierarchical nanochannel systems showing a pore-in-pore or pore-on-pore structure constructed from different materials. Typical building methods include in situ growth and seeding-facilitated interfacial growth for the pore-in-pore structure and spin-coating (Reproduced with permission26. CC BY 4.0 (https://creativecommons.org/licenses/by-nc/4.0/)), vacuum filtration (Reproduced with permission29. CC BY (https://creativecommons.org/licenses/)), self-assembly (Reproduced with permission32. Copyright 2022, American Chemical Society.), in situ growth (Reproduced with permission34. Copyright 2019, Wiley-VCH.) for the pore-on-pore structure.
