# \#transfermarix

**URL:** https://discourse.julialang.org/tag/transfermarix/1726.md

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## [Vacuum & Substrate](https://discourse.julialang.org/t/vacuum-substrate/125161)

<div class="topic-metadata">

**Author:** [@Vincenzo\_Pierro](https://discourse.julialang.org/u/Vincenzo_Pierro)\
**Replies:** 5\
**Last updated:** [January 25, 2025, 9:46am UTC](https://discourse.julialang.org/t/vacuum-substrate/125161 "2025-01-25T09:46:06Z")

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how I can define a infinite layer of Vacuum. It is no clear the substrate how can be defined in the structure