scholarly journals Synthesis and structure determination via ultra-fast electron diffraction of the new microporous zeolitic germanosilicate ITQ-62

2018 ◽  
Vol 54 (17) ◽  
pp. 2122-2125 ◽  
Author(s):  
Lindiane Bieseki ◽  
Raquel Simancas ◽  
Jose L. Jordá ◽  
Pablo J. Bereciartua ◽  
Ángel Cantín ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Structure Determination ◽  
Fast Electron ◽  
Diffraction Tomography ◽  
Channel System

A new multipore zeolite of 12–8 × 8 × 8 channel system, named ITQ-62, has been synthesized and its structure solved using electron diffraction tomography.

scholarly journals A nanocrystalline monoclinic CaCO3precursor of metastable aragonite

2018 ◽  
Vol 4 (12) ◽  
pp. eaau6178 ◽  
Author(s):  
Péter Németh ◽  
Enrico Mugnaioli ◽  
Mauro Gemmi ◽  
György Czuppon ◽  
Attila Demény ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Structure Determination ◽  
Diffuse Scattering ◽  
Diffraction Tomography ◽  
Synthetic Material ◽  
Near Surface ◽  
Surface Conditions ◽  
Terrestrial Sediments ◽  
Living Organisms ◽  
New Phase

Despite its thermodynamical metastability at near-surface conditions, aragonite is widespread in marine and terrestrial sediments. It abundantly forms in living organisms, and its abiotic formation is favored in waters of a Mg2+/Ca2+ratio > 1.5. Here, we provide crystallographic evidence of a nanocrystalline CaCO3polymorph, which precipitates before aragonite in a cave. The new phase, which we term monoclinic aragonite (mAra), is crystallographically related to ordinary, orthorhombic aragonite. Electron diffraction tomography combined with structure determination demonstrates that mAra has a layered aragonite structure, in which some carbonates can be replaced by hydroxyls and up to 10 atomic % of Mg can be incorporated. The diagnostic electron diffraction features of mAra are diffuse scattering and satellite reflections along aragonite {110}. Similar features have previously been reported—although unrecognized—from biogenic aragonite formed in stromatolites, mollusks, and cyanobacteria as well as from synthetic material. We propose that mAra is a widespread crystalline CaCO3that plays a hitherto unrecognized key role in metastable aragonite formation.

scholarly journals Structural model of cowlesite by fast electron diffraction tomography

2017 ◽  
Vol 73 (a2) ◽  
pp. C999-C999 ◽  
Author(s):  
Mauro Gemmi ◽  
Enrico Mugnaioli ◽  
Jeremy David ◽  
Giuseppe Cruciani ◽  
Marco Merlini
Keyword(s):  
Electron Diffraction ◽  
Fast Electron ◽  
Structural Model ◽  
Diffraction Tomography

scholarly journals 3D Structure Determination from HRTEM and Electron Diffraction Tomography

2009 ◽  
Vol 15 (S2) ◽  
pp. 56-57
Author(s):  
X Zou ◽  
D Zhang ◽  
P Oleynikov ◽  
J Sun ◽  
S Hovmöller
Keyword(s):  
Electron Diffraction ◽  
Structure Determination ◽  
3D Structure ◽  
Diffraction Tomography ◽  
3D Structure Determination

Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30, 2009

scholarly journals Fast electron diffraction tomography

2015 ◽  
Vol 71 (a1) ◽  
pp. s104-s104
Author(s):  
Mauro Gemmi ◽  
Mari Grazia Immacolata La Placa ◽  
Athanassios Galanis ◽  
Edgar F. Rauch ◽  
Stavros Nicolopoulos
Keyword(s):  
Electron Diffraction ◽  
Fast Electron ◽  
Diffraction Tomography

Structure determination of a new phase Ni 8 Ti 5 by electron diffraction tomography

2017 ◽  
Vol 85 ◽  
pp. 110-116 ◽  
Author(s):  
Mariana Klementová ◽  
Miroslav Karlík ◽  
Pavel Novák ◽  
Lukáš Palatinus
Keyword(s):  
Electron Diffraction ◽  
Structure Determination ◽  
Diffraction Tomography ◽  
New Phase

ChemInform Abstract: Solution Synthesis of a New Thermoelectric Zn1+xSb Nanophase and Its Structure Determination Using Automated Electron Diffraction Tomography.

ChemInform ◽  
2010 ◽  
Vol 41 (43) ◽  
pp. no-no
Author(s):  
Christina S. Birkel ◽  
Enrico Mugnaioli ◽  
Tatiana Gorelik ◽  
Ute Kolb ◽  
Martin Panthoefer ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Structure Determination ◽  
Diffraction Tomography ◽  
Solution Synthesis

Fast-ADT: A fast and automated electron diffraction tomography setup for structure determination and refinement

2020 ◽  
Vol 211 ◽  
pp. 112951 ◽  
Author(s):  
S Plana-Ruiz ◽  
Y Krysiak ◽  
J Portillo ◽  
E Alig ◽  
S Estradé ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Structure Determination ◽  
Diffraction Tomography

scholarly journals Structure Determination of Donwilhelmsite by Electron Diffraction Tomography

2019 ◽  
Vol 25 (S2) ◽  
pp. 2450-2451
Author(s):  
Mariana Klementova ◽  
Lukas Palatinus ◽  
Jörg Fritz ◽  
Ansgar Greshake ◽  
Richard Wirth ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Structure Determination ◽  
Diffraction Tomography

scholarly journals Fast electron diffraction tomography on beam sensitive materials at room temperature: pharmaceuticals and zeolites

2016 ◽  
Vol 72 (a1) ◽  
pp. s107-s107 ◽  
Author(s):  
Mauro Gemmi ◽  
Enrico Mugnaioli ◽  
Jeremy David ◽  
Camilla Tossi ◽  
Athanassios Galanis ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Fast Electron ◽  
Room Temperature ◽  
Diffraction Tomography

scholarly journals Structural model of cowlesite by fast electron diffraction tomography

2017 ◽  
Vol 73 (a2) ◽  
pp. C1285-C1285
Author(s):  
Mauro Gemmi ◽  
Enrico Mugnaioli ◽  
Jeremy David ◽  
Giuseppe Cruciani ◽  
Marco Merlini
Keyword(s):  
Electron Diffraction ◽  
Fast Electron ◽  
Structural Model ◽  
Diffraction Tomography
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