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Showing 1 to 12 of 14 entries
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Artificial construction of the layered Ruddlesden-Popper manganite La2Sr2Mn3O10 by reflection high energy electron diffraction monitored pulsed laser deposition.

Journal of the American Chemical Society

Palgrave RG, Borisov P, Dyer MS, McMitchell SR, Darling GR, Claridge JB, Batuk M, Tan H, Tian H, Verbeeck J, Hadermann J, Rosseinsky MJ.
PMID: 22463768
J Am Chem Soc. 2012 May 09;134(18):7700-14. doi: 10.1021/ja211138x. Epub 2012 Apr 24.

Pulsed laser deposition has been used to artificially construct the n = 3 Ruddlesden-Popper structure La(2)Sr(2)Mn(3)O(10) in epitaxial thin film form by sequentially layering La(1-x)Sr(x)MnO(3) and SrO unit cells aided by in situ reflection high energy electron diffraction monitoring....

Possibilities and limitations of advanced transmission electron microscopy for carbon-based nanomaterials.

Beilstein journal of nanotechnology

Ke X, Bittencourt C, Van Tendeloo G.
PMID: 26425406
Beilstein J Nanotechnol. 2015 Jul 16;6:1541-57. doi: 10.3762/bjnano.6.158. eCollection 2015.

A major revolution for electron microscopy in the past decade is the introduction of aberration correction, which enables one to increase both the spatial resolution and the energy resolution to the optical limit. Aberration correction has contributed significantly to...

Local destruction of superconductivity by non-magnetic impurities in mesoscopic iron-based superconductors.

Nature communications

Li J, Ji M, Schwarz T, Ke X, Van Tendeloo G, Yuan J, Pereira PJ, Huang Y, Zhang G, Feng HL, Yuan YH, Hatano T, Kleiner R, Koelle D, Chibotaru LF, Yamaura K, Wang HB, Wu PH, Takayama-Muromachi E, Vanacken J, Moshchalkov VV.
PMID: 26139568
Nat Commun. 2015 Jul 03;6:7614. doi: 10.1038/ncomms8614.

The determination of the pairing symmetry is one of the most crucial issues for the iron-based superconductors, for which various scenarios are discussed controversially. Non-magnetic impurity substitution is one of the most promising approaches to address the issue, because...

Three-dimensional valency mapping in ceria nanocrystals.

ACS nano

Goris B, Turner S, Bals S, Van Tendeloo G.
PMID: 25286190
ACS Nano. 2014 Oct 28;8(10):10878-84. doi: 10.1021/nn5047053. Epub 2014 Oct 10.

Using electron tomography combined with electron energy loss spectroscopy (EELS), we are able to map the valency of the Ce ions in CeO2-x nanocrystals in three dimensions. Our results show a clear facet-dependent reduction shell at the surface of...

Nematic superconducting state in iron pnictide superconductors.

Nature communications

Li J, Pereira PJ, Yuan J, Lv YY, Jiang MP, Lu D, Lin ZQ, Liu YJ, Wang JF, Li L, Ke X, Van Tendeloo G, Li MY, Feng HL, Hatano T, Wang HB, Wu PH, Yamaura K, Takayama-Muromachi E, Vanacken J, Chibotaru LF, Moshchalkov VV.
PMID: 29192211
Nat Commun. 2017 Dec 01;8(1):1880. doi: 10.1038/s41467-017-02016-y.

Nematic order often breaks the tetragonal symmetry of iron-based superconductors. It arises from regular structural transition or electronic instability in the normal phase. Here, we report the observation of a nematic superconducting state, by measuring the angular dependence of...

Nanoscale mapping of plasmon and exciton in ZnO tetrapods coupled with Au nanoparticles.

Scientific reports

Bertoni G, Fabbri F, Villani M, Lazzarini L, Turner S, Van Tendeloo G, Calestani D, Gradečak S, Zappettini A, Salviati G.
PMID: 26754789
Sci Rep. 2016 Jan 12;6:19168. doi: 10.1038/srep19168.

Metallic nanoparticles can be used to enhance optical absorption or emission in semiconductors, thanks to a strong interaction of collective excitations of free charges (plasmons) with electromagnetic fields. Herein we present direct imaging at the nanoscale of plasmon-exciton coupling...

Atomic electric fields revealed by a quantum mechanical approach to electron picodiffraction.

Nature communications

Müller K, Krause FF, Béché A, Schowalter M, Galioit V, Löffler S, Verbeeck J, Zweck J, Schattschneider P, Rosenauer A.
PMID: 25501385
Nat Commun. 2014 Dec 15;5:5653. doi: 10.1038/ncomms6653.

By focusing electrons on probes with a diameter of 50 pm, aberration-corrected scanning transmission electron microscopy (STEM) is currently crossing the border to probing subatomic details. A major challenge is the measurement of atomic electric fields using differential phase...

Magnetically Decorated Multi-Walled Carbon Nanotubes as Dual MRI and SPECT Contrast Agents.

Advanced functional materials

Wang JT, Cabana L, Bourgognon M, Kafa H, Protti A, Venner K, Shah AM, Sosabowski J, Mather SJ, Roig A, Ke X, Tendeloo GV, de Rosales RTM, Tobias G, Al-Jamal KT.
PMID: 26097444
Adv Funct Mater. 2014 Apr 02;24(13):1880-1894. doi: 10.1002/adfm.201302892.

Carbon nanotubes (CNTs) have been proposed as one of the most promising nanomaterials to be used in biomedicine for their applications in drug/gene delivery as well as biomedical imaging. The present study developed radio-labeled iron oxide decorated multi-walled CNTs...

Artificial construction of the layered Ruddlesden-Popper manganite La2Sr2Mn3O10 by reflection high energy electron diffraction monitored pulsed laser deposition.

Journal of the American Chemical Society

Palgrave RG, Borisov P, Dyer MS, McMitchell SR, Darling GR, Claridge JB, Batuk M, Tan H, Tian H, Verbeeck J, Hadermann J, Rosseinsky MJ.
PMID: 22463768
J Am Chem Soc. 2012 May 09;134(18):7700-14. doi: 10.1021/ja211138x. Epub 2012 Apr 24.

Pulsed laser deposition has been used to artificially construct the n = 3 Ruddlesden-Popper structure La(2)Sr(2)Mn(3)O(10) in epitaxial thin film form by sequentially layering La(1-x)Sr(x)MnO(3) and SrO unit cells aided by in situ reflection high energy electron diffraction monitoring....

Ferroelastic switching in a layered-perovskite thin film.

Nature communications

Wang C, Ke X, Wang J, Liang R, Luo Z, Tian Y, Yi D, Zhang Q, Wang J, Han XF, Van Tendeloo G, Chen LQ, Nan CW, Ramesh R, Zhang J.
PMID: 26838483
Nat Commun. 2016 Feb 03;7:10636. doi: 10.1038/ncomms10636.

A controllable ferroelastic switching in ferroelectric/multiferroic oxides is highly desirable due to the non-volatile strain and possible coupling between lattice and other order parameter in heterostructures. However, a substrate clamping usually inhibits their elastic deformation in thin films without...

Advanced electron crystallography through model-based imaging.

IUCrJ

Van Aert S, De Backer A, Martinez GT, den Dekker AJ, Van Dyck D, Bals S, Van Tendeloo G.
PMID: 26870383
IUCrJ. 2016 Jan 01;3:71-83. doi: 10.1107/S2052252515019727. eCollection 2016 Jan 01.

The increasing need for precise determination of the atomic arrangement of non-periodic structures in materials design and the control of nanostructures explains the growing interest in quantitative transmission electron microscopy. The aim is to extract precise and accurate numbers...

Heterometal nanoparticles from Ru-based molecular clusters covalently anchored onto functionalized carbon nanotubes and nanofibers.

Beilstein journal of nanotechnology

Vidick D, Ke X, Devillers M, Poleunis C, Delcorte A, Moggi P, Van Tendeloo G, Hermans S.
PMID: 26199832
Beilstein J Nanotechnol. 2015 Jun 10;6:1287-97. doi: 10.3762/bjnano.6.133. eCollection 2015.

Heterometal clusters containing Ru and Au, Co and/or Pt are anchored onto carbon nanotubes and nanofibers functionalized with chelating phosphine groups. The cluster anchoring yield is related to the amount of phosphine groups available on the nanocarbon surface. The...

Showing 1 to 12 of 14 entries