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Figure 2
Overview on the `sheet-on-sheet' setup and results from the fluorescence measurements. (a)–(c) show how the film sandwiches were prepared and the fluorescence recorded using a micro-spectrometer. This particular case shown used a 3.4 × 3.4 cm spacer with vacuum grease and two pieces of 6 and 13 µm Mylar. (d) Fluorescent half-lives manifested with the five different types of seal: (1) 2.5 × 2.5 cm spacer + 13 µm Mylar, (2) grease + 13 µm Mylar, (3) 2.5 × 2.5 cm spacer + grease + 13 µm Mylar, (4) 3.4 × 3.4 cm spacer + 13 µm Mylar, and (5) 3.4 × 3.4 cm spacer + grease + 13 and 6 µm Mylar. Single measurements are shown as full circles. Mean values and the standard deviations are represented by bars and whiskers, respectively.

IUCrJ
Volume 7| Part 5| September 2020| Pages 901-912
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520010374