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. 2018 Dec 12;19(1):477–481. doi: 10.1021/acs.nanolett.8b04303

Figure 1.

Figure 1

HAADF-STEM images of Pt NPs (a) at room temperature and in ultrahigh vacuum on a 25 nm thick SiN support, (b) at room temperature and in ultrahigh vacuum in a gas cell, and (c) at 300 °C and in 5% H2/Ar environment in a gas cell. The quality is drastically reduced when imaging is performed in a gas cell.