Past and present IMISX sample holders. (a) The first holder of its kind. It imposed slight curvature in the sachet to provide mechanical stability. The sachet was affixed to a mounting pin on a magnetic base. Adapted under a Creative Commons Attribution (CC-BY) License (https://creativecommons.org/licenses/by/2.0) from Huang et al. (2016). (b) The Y-shaped support. In many ways, it is analogous to the holder shown in (a) with the exception that it has a flat as opposed to a curved sachet and sample. In this holder, mechanical stability comes from the uprights in the Y-shaped support. (c), (d) The 3D-printed h1 and h2 holders introduced here.