Journal Article

PUBDB-2023-07273

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Coherent x-ray diffraction of a semiregular Pt nanodot array

Keller, T. F. (Corresponding author)DESY* ; Shayduk, R.XFEL.EU* ; Kim, C.XFEL.EU* ; Mukharamova, N.DESY* ; Pandey, A. D.DESY* ; Abuin, M.Extern* ; Vonk, V.DESY* ; Fernandez-Cuesta, I.Extern* ; Barthelmess, M.CFEL* ; Froemter, R.Extern* ; Zozulya, A.XFEL.EU* ; Erbe, A.Extern* ; Stierle, A.DESY*

2023
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.108.134109  doi:10.3204/PUBDB-2023-07273

Abstract: Structural insight into nano-objects down to the atomic scale is one of the most important prerequisites tounderstand the properties of functional materials and will ultimately permit one to relate the size and shape ofnanoparticles to their catalytic activity. We elucidate the potential of extracting structural information abouta small ensemble of nanoparticles that are semiregularly arranged on a periodic array from coherent x-rayBragg diffraction. The observed fringe pattern in the Pt(111) Bragg peak obviously originates from the mutualinterference of the Bragg scattered wave field from individual nanoparticles in the nanoarray. Despite the absenceof a symmetry center in the Bragg peak of the nanoarray, we identify the most prominent in-plane spatialfrequencies of the latter by applying a Patterson map analysis to the Bragg peak superstructure. Integrationalong the in-plane reciprocal space direction over the relevant in-plane regions of interest results in Laueoscillations that arise from nanoparticle sets of similar heights in real space. A one-to-one comparison withreal-space microscopic information obtained from scanning electron microscopy and atomic force microscopysuggests potential nanoparticle subsets as the origin for the x-ray intensity in these regions of interest by the goodagreement in their height and direction-dependent in-plane interparticle distances, as also further supported bysimulations. Nanoparticle arrays with well-defined tunable sizes and lateral distances may serve in the future totrack structural changes in, e.g., sizes, relative positions, and tilts of smallest’ catalysis-relevant nanoparticlesduring operando heterogeneous catalysis experiments in the 10-nm-size regime.

Note: NFFA Grant 101007417

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Contributing Institute(s):

1. Nanolab (FS-NL)
2. FS-CFEL-1 (Group Leader: Henry Chapman) (CFEL-I)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. NEP - Nanoscience Foundries and Fine Analysis - Europe|PILOT (101007417) (101007417)

Experiment(s):

1. PETRA Beamline P10 (PETRA III)
2. DESY NanoLab: Microscopy
3. DESY NanoLab: Sample Preparation
4. DESY NanoLab: X-Ray Diffraction

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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