  Chen et al. (1) applied three-dimensional (3D) Fourier filtering together
with equal-slope tomographic reconstruction for an observation of nearly all
the atoms in a multiply twinned platinum nanoparticle. However, their
methodology suffers from fundamental methodological flaws, as initially brought
up by a recent Communications Arising (2) and now analyzed in-depth in this
report written on June 20, 2014. The authors of (1) read this report and wrote
a reply containing 5 points. While we have solid reasons to disagree with their
points, we will not include our responses here, and will address their first
two points using Nature's online commenting facility.
  References 1. Chen, C.C., et al., Three-dimensional imaging of dislocations
in a nanoparticle at atomic resolution. Nature 496(7443):74-79, 2013 2. Rez, P.
and M.M.J. Treacy, Three-dimensional imaging of dislocations. Nature
503(E1):74-79, 2013
