Coherent X-ray diffraction imaging meets ptychography to study core-shell-shell nanowires
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10380456" target="_blank" >RIV/00216208:11320/18:10380456 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1557/adv.2018.466" target="_blank" >https://doi.org/10.1557/adv.2018.466</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1557/adv.2018.466" target="_blank" >10.1557/adv.2018.466</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Coherent X-ray diffraction imaging meets ptychography to study core-shell-shell nanowires
Popis výsledku v původním jazyce
We report on the results of coherent X-ray diffraction imaging (CXDI) and ptychography measurements of two individual core-shell-shell GaAs/(In,Ga)As/GaAs nanowires (NWs) grown by molecular beam epitaxy (MBE) on patterned Si(111) substrate. CXDI at the axial GaAs 111 Bragg reflection was applied at different positions along the NW axis in order to characterize the NWs in terms of structural homogeneity along the radial directions. At each positon 3D reciprocal space maps have been recoded and inverted using phase retrieval algorithms. The CXDI were complemented by 2D ptychography measurements at GaAs 111 Bragg reflection probing the same NWs with respect to their structural homogeneity. Both methods provide structural homogeneity for NW1 and NW2 except at the bottom part of the NWs. In case of NW2 CXDI and ptychography show changes in the structure of the top part of the NW indicated by 60 rotation of the indicated three-fold rotational symmetry in the observed diffraction patterns and changes in the strain field reconstructed from ptychography.
Název v anglickém jazyce
Coherent X-ray diffraction imaging meets ptychography to study core-shell-shell nanowires
Popis výsledku anglicky
We report on the results of coherent X-ray diffraction imaging (CXDI) and ptychography measurements of two individual core-shell-shell GaAs/(In,Ga)As/GaAs nanowires (NWs) grown by molecular beam epitaxy (MBE) on patterned Si(111) substrate. CXDI at the axial GaAs 111 Bragg reflection was applied at different positions along the NW axis in order to characterize the NWs in terms of structural homogeneity along the radial directions. At each positon 3D reciprocal space maps have been recoded and inverted using phase retrieval algorithms. The CXDI were complemented by 2D ptychography measurements at GaAs 111 Bragg reflection probing the same NWs with respect to their structural homogeneity. Both methods provide structural homogeneity for NW1 and NW2 except at the bottom part of the NWs. In case of NW2 CXDI and ptychography show changes in the structure of the top part of the NW indicated by 60 rotation of the indicated three-fold rotational symmetry in the observed diffraction patterns and changes in the strain field reconstructed from ptychography.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
Projekt
<a href="/cs/project/EF15_003%2F0000485" target="_blank" >EF15_003/0000485: Centrum nanomateriálů pro pokročilé aplikace</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
MRS ADVANCES
ISSN
2059-8521
e-ISSN
—
Svazek periodika
3
Číslo periodika v rámci svazku
39
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
6
Strana od-do
2317-2322
Kód UT WoS článku
000440819700004
EID výsledku v databázi Scopus
2-s2.0-85051110831