> For the complete documentation index, see [llms.txt](https://docs.materialsproject.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.materialsproject.org/apps/explorer-apps/mof-explorer/property-definitions/pore-geometry.md). # Pore Geometry Pore-related properties were computed using [Zeo++](http://zeoplusplus.org) 0.3 with the high-accuracy flag (except in the rare cases where this failed, in which case the standard accuracy was used). These properties were computed using the PBE-D3(BJ) optimized structure. The pore-limiting diameter is the smallest spherical diameter of void space that a guest species would need to traverse in order to diffuse through the material, whereas the largest cavity diameter is the largest spherical diameter that can fit within the void space of the material. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.materialsproject.org/apps/explorer-apps/mof-explorer/property-definitions/pore-geometry.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.