fig5
Figure 5. APT specimen preparation from a bulk nanoporous gold (NPG) with frozen heavy water (D2O ice) in a plasma FIB. (A) NPG and D2O ice before annular milling with the 200- and 75-μm milling patterns. (B) D2O ice/NPG pillar during ion milling. (C) Ice/NPG tip after milling. (D) High-resolution view of the final APT tip. Reproduced with the permission of Ref.[32] Copyright 2023, Science Advances.
