The Trojan war between Greeks and the defenders of the city of Troy 1 In early Western Civilization, Electrum was mentionedĪlready in Homeric Poems (Iliad) 2 describing Valley, is reflected in archeological findings pertaining to the earliestĬivilizations, beginning in the third millennium BC in ancient Egypt. In prominent locations of antiquity, mainly in the Upper Nile River With some of its first experiences with metallurgy. The size of the nanoparticle, and the nature of the surrounding environment.ĭenotes the native gold–silver alloy that provided humanity That can be achieved in the tuning of the local surface plasmon resonance,ĭepending of the alloy content, the chemical ordering, the morphology, Finally, the optical properties of Au–Ag nanoparticles,Ĭalculated within the discrete dipole approximation, show the control Rules, based on the melting temperatures and surface energies, areĭeduced. By reviewing the nature of the surface segregatedĮlement of different bimetallic nanoalloys, two surface segregation Latest transmission electron microscopy observations and energy dispersive The polyhedral shapes considered, in excellent agreement with the Reveals the preferential presence of silver at the surface for all (cube, rhombic dodecahedron, and cuboctahedron). There is a “tilting” effect on the solidus–liquidusĬurves for some particular shapes exposing the (100) and (110) facets Melting enthalpy, and interaction parameters in both phases), the To evaluate the size effect on all the parameters (melting temperature, Using a regular solution model within a nanothermodynamic approach However, as the experimental determination remains quite challengingĪt the nanoscale, theoretical guidance can provide significant advantages. That considers explicitly its size and shape (morphology) dependence. Stability of this alloy, a knowledge of its phase diagram is required To comprehend the structural characteristics and the thermodynamic In nanotechnology, as it is applied in catalysis and nanomedicine. Phase, both historically (as “Electrum”) and now especially
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