Articles tagged "atomic resolution"

The 16th European Microscopy Congress 2016
Investigating lattice strain in Au nanodecahedrons
Bart Goris (1), Jan De Beenhouwer (2), Annick De Backer (1), Daniele Zanaga (1), Joost Batenburg (3), Anna Sanchez-Iglesias (4), Luis Liz-Marzan (4, 5), Sandra Van Aert (1), Jan Sijbers (2), Gustaaf Van Tendeloo (1), Sara Bals (1)
1. EMAT, University of Antwerp, Antwerp, Belgique 2. iMinds-Vision Lab, University of Antwerp, Antwerp, Belgique 3. CWI, Centrum Wiskunde & Informatica, Amsterdam, Pays-Bas 4. CIC, biomaGUNE, San Sebastian, Espagne 5. Ikerbasque, Basque Foundation for Science, Bilbao, Espagne
The three dimensional (3D) structural characterization of nanoparticles is crucial in materials science since many properties heavily depend on size, surface to volume ratio and…
The 16th European Microscopy Congress 2016
Operando electron microscopy in heterogeneous catalysis
Christian F. Elkjær (1, 2), Søren Vendelbo (1, 3), Patricia J. Kooyman (3, 4), Stig Helveg (1)
1. Haldor Topsoe A/S, Haldor Topsøes Allé 1, DK-2800 Kgs. Lyngby, Danemark 2. CINF, Technical University of Denmark, Fysikvej, Building 307, DK-2800 Kgs. Lyngby, Danemark 3. ChemE, Delft University of Technology, Julianalaan 136, 2628 BL Delft, Pays-Bas 4. ChemEng, University of Cape Town, Private Bag X3, 7700 Rodenbosch, Afrique du Sud
Visualizing nanoparticles at atomic-resolution by transmission electron microscopy (TEM) is beneficial for the understanding of their physico-chemical properties. However, nanoparticles respond dynamically to changes in…
The 16th European Microscopy Congress 2016
Status of the SALVE-microscope: Cc-correction for atomic-resolution TEM imaging at 20kV
Martin Linck (1), Peter Hartel (1), Stephan Uhlemann (1), Frank Kahl (1), Heiko Müller (1), Joachim Zach (1), Johannes Biskupek (2), Marcel Niestadt (3), Ute Kaiser (2), Max Haider (1)
1. Corrected Electron Optical Systems GmbH, Heidelberg, Allemagne 2. Central facility of electron microscopy, Ulm University, Ulm, Allemagne 3. R&D, FEI Company, Eindhoven, Pays-Bas
With the goal to enable atomic resolution TEM observations on beam sensitive materials the SALVE project had been initiated to develop a dedicated low-voltage TEM…
The 16th European Microscopy Congress 2016
Electron microscopy investigations of cation exchange in colloidal PbSe/CdSe nanocrystals
Anil Yalcin (1), Bart Goris (2), Zaochuan Fan (3), Thijs Vlugt (3), Alfons van Blaaderen (4), Daniel Vanmaekelbergh (4), Sara Bals (2), Marijn van Huis (4)
1. Kavli Institute of Nanoscience, Delft University of Technology, Delft, Pays-Bas 2. Electron Microscopy for Materials Research (EMAT), University of Antwerp, Antwerp, Belgique 3. Process and Energy Laboratory, Delft University of Technology, Delft, Pays-Bas 4. Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, Pays-Bas
Cation exchange is a very powerful method for creating heterogeneous nanocrystals (NCs), such as core-shell or rod-tip nanostructures. Here we present an overview of the…
The 16th European Microscopy Congress 2016
HAADF-STEM observation of twinned structure formed in gold nanorods by near-infrared pulsed laser irradiation
Kohei Aso (1), Koji Shigematsu (1), Tomokazu Yamamoto (1), Syo Matsumura (1, 2)
1. Department of Applied Quantum Physics, Kyushu University, Fukuoka, Japon 2. The Ultramicroscopy Research Center, Kyushu University, Fukuoka, Japon
Gold nanorods have been drawing much interests widely in various science and engineering fields because of their characteristic optical properties [1]. Due to…
The 16th European Microscopy Congress 2016
Atomic resolution electron microscopy of cobalt ferrite nanoparticles
Dominique Piché (1), Juan G Lozano (1), Aakash Varambhia (1), Frank Dillon (1), Lewys Jones (1), Peter D Nellist (1), Nicole Grobert (1)
1. Department of Materials, University of Oxford, Oxford, Royaume Uni
Cobalt ferrite (CoFe2O4) nanoparticles have recently emerged as a potential candidate for a range of bio-medical applications due to their interesting physical and magnetic properties.…
The 16th European Microscopy Congress 2016
Mechanisms of polarity inversion during the MOVPE growth of III-nitrides on sapphire investigated by high resolution transmission electron microscopy.
Natalia Stolyarchuk (1, 2), Stefan Mohn (1), Toni Markurt (1), Aimeric Courville (2), Rosa Di Felice (3), Philippe Vennéguès (2), Martin Albrecht (1)
1. Leibniz-Institut für Kristallzüchtung, Leibniz-Institut für Kristallzüchtung, Berlin, Allemagne 2. Centre de Recherche sur l'Hétéro Epitaxie et ses Applications, CRHEA-CNRS, Centre de Recherche sur l'Hétéro Epitaxie et ses Applications, CRHEA-CNRS, Valbonne, France 3. Department of Physics, University of Southern California, Department of Physics, University of Southern California, Los Angeles, Etats-Unis
The most important compound semiconductors for applications in optoelectronics crystallize in the sphalerite or wurtzite structure, which contain polar axes. Though the polarity is of…
The 16th European Microscopy Congress 2016
Quantifying the hole distribution in cuprates: Atomic-resolution near-edge fine-structures of the superconductor Sr3Ca11Cu24O41
Matthieu Bugnet (1, 2), Guillaume Radtke (3), Stefan Löffler (1, 4), Peter Schattschneider (4), David Hawthorn (5), Hanna A. Dabkowska (6), Graeme M. Luke (7), George A. Sawatzky (8), Gianluigi A. Botton (1)
1. Department of Materials Science and Engineering & CCEM, McMaster University, Hamilton, Canada 2. Now at MATEIS UMR CNRS 5510, University of Lyon – National Institute for Applied Sciences, Villeurbanne, France 3. Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie - UMR CNRS 7590, Université Pierre et Marie Curie, Paris, France 4. Institute of Solid State Physics and USTEM, Vienna University of Technology, Vienna, Autriche 5. Department of Physics and Astronomy, University of Waterloo, Waterloo, Canada 6. Brockhouse Institute for Materials Research, McMaster University, Hamilton, Canada 7. Department of Physics and Astronomy, McMaster University, Hamilton, Canada 8. Department of Physics and Astronomy, University of British Columbia, Vancouver, Canada
Sr14-xCaxCu24O41 is a fascinating member in the family of cuprates, not only because of its peculiar crystal structure where two distinct units, corner-shared CuO2 chains…
The 16th European Microscopy Congress 2016
Novel spectroscopy with atomic-size aberrated electron probes in stem
Juan Carlos Idrobo (1), Ján Rusz (2), Jakob Spiegelberg (2), Michael A. McGuire (3), Christopher T. Symons (4), Ranga Raju Vatsavai (4), Claudia Cantoni (3), Andrew R Lupini (3)
1. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Etats-Unis 2. Department of Physics and Astronomy, Uppsala University, Uppsala, Suède 3. Materials Science and Technology Division , Oak Ridge National Laboratory, Oak Ridge, Etats-Unis 4. Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Etats-Unis
it has been theoretically argued that atomic-size electron probes with customized phase distributions can detect electron magnetic circular dichroism (EMCD) [1]. Based on this prediction…
The 16th European Microscopy Congress 2016
Mn 4+ holes localization around divalent cations in low-hole doped manganites
Luisa Ruiz-Gonzalez (1), Raquel Cortés-Gil (1), Daniel Gonzalez-Merchante (1), Jose Maria Alonso (2), José M. Gonzalez-Calbet (1)
1. DPTO. QUIMICA INORGANICA, UCM, Madrid, Espagne 2. Instituto de Ciencia de Materiales, CSIC, Madrid, Espagne
Magnetotransport properties of low Ca doping La1-xCaxMnO3 perovskite related manganites have been described on the basis of the existence of isolated metallic (M)-double exchange (DE)…