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| ANDALUSIAN DELIGHT | ||
Carlos Garcia Negrete |
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| Commonly found on Easter week, "pestiño" is an Andalusian delight coming to sweeten you. This delight so valuable as precious metal could be exemplified in the image. This is a nicely grown heterometallic dimer composed of an Au domain "right side" bonded to an octahedral Pt domain " left side" through a doble {111} epitaxy relationship. The system can be envisaged as four Au tetrahedral subunits and one Pt octahedral unit in a cyclic arrangement that is similar to the corresponding one in decahedral gold nanoparticles however the multicomponent system is characterized by a broken five-fold rotational symmetry about the [011] axis. Equipment: HRTEM image obtained with a FEI Tecnai G2F30 S-Twin TEM/STEM microscope, operated at 300kV. | ||
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