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Front Cover: Structure, morphology and aging of Ag‐Fe dumbbell nanoparticles (Phys. Status Solidi A 10/2011)
Author(s) -
Elsukova Anna,
Li ZiAn,
Möller Christina,
Spasova Marina,
Acet Mehmet,
Farle Michael,
Kawasaki Masahiro,
Ercius Peter,
Duden Thomas
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201190031
Subject(s) - dumbbell , materials science , nanocomposite , transmission electron microscopy , nanoparticle , chemical engineering , particle (ecology) , janus particles , annealing (glass) , nanotechnology , scanning electron microscope , morphology (biology) , crystallography , composite material , chemistry , janus , medicine , physical therapy , genetics , oceanography , geology , biology , engineering
Dumbbell‐shaped or Janus‐type nanocomposites have been attracting much attention recently due to their possible application in biomedicine and catalysis. Elsukova et al. ( pp. 2437‐2442 ) have prepared dumbbell Ag‐Fe nanoparticles by magnetron sputtering with subsequent in‐flight annealing and investigated the effect of ageing on the particle structure and morphology. Structural properties and chemical compositions of freshly prepared and five‐month aged particles were examined by means of transmission electron microscopy including high‐resolution imaging, energy dispersive X‐ray spectroscopy, and 3D electron tomography. The fresh particles consist of a faceted Ag part on an Fe‐Fe 3 O 4 composite particle of more spherical shape. The aged nanocomposite consists of a silver spherical particle that is attached to a hollow iron oxide sphere containing one or several Ag clusters inside.