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@ARTICLE{OzsoyKeskinbora:827068,
author = {Ozsoy - Keskinbora, C. and Boothroyd, Christopher Brian and
Dunin-Borkowski, Rafal and van Aken, P. A. and Koch, C. T.},
title = {{M}apping the electrostatic potential of {A}u nanoparticles
using hybrid electron holography},
journal = {Ultramicroscopy},
volume = {165},
issn = {0304-3991},
address = {Amsterdam},
publisher = {Elsevier Science},
reportid = {FZJ-2017-01274},
pages = {8 - 14},
year = {2016},
abstract = {Electron holography is a powerful technique for
characterizing electrostatic potentials, charge
distributions, electric and magnetic fields, strain
distributions and semiconductor dopant distributions with
sub-nm spatial resolution. Mapping internal electrostatic
and magnetic fields within nanoparticles and other
low-dimensional materials by TEM requires both high spatial
resolution and high phase sensitivity. Carrying out such an
analysis fully quantitatively is even more challenging,
since artefacts such as dynamical electron scattering may
strongly affect the measurement. In-line electron
holography, one of the variants of electron holography,
features high phase sensitivity at high spatial frequencies,
but suffers from inefficient phase recovery at low spatial
frequencies. Off-axis electron holography, in contrast, can
recover low spatial frequency phase information much more
reliably, but is less effective in retrieving phase
information at high spatial frequencies when compared to
in-line holography. We investigate gold nanoparticles using
hybrid electron holography at both atomic-resolution and
intermediate magnification. Hybrid electron holography is a
novel technique that synergistically combines off-axis and
in-line electron holography, allowing the measurement of the
complex wave function describing the scattered electrons
with excellent signal-to-noise properties at both high and
low spatial frequencies. The effect of dynamical electron
scattering is minimized by beam tilt averaging.},
cin = {PGI-5 / ER-C-1},
ddc = {570},
cid = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
pid = {G:(DE-HGF)POF3-143},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000375946200002},
doi = {10.1016/j.ultramic.2016.03.007},
url = {https://juser.fz-juelich.de/record/827068},
}