Fig. 4: Reaealing the mechanism of metal deposition on non-chiral AuAg seed nanowire giving straight core-shell nanowire. | Nature Communications

Fig. 4: Reaealing the mechanism of metal deposition on non-chiral AuAg seed nanowire giving straight core-shell nanowire.

From: Observation of nanoparticle coalescence during core-shell metallic nanowire growth in colloids via nanoscale imaging

Fig. 4

A Schematics show the noble metal deposition process by using a chiral AuAg alloy nanowire as seed. The heterogeneous nucleation, homogeneous nucleation, nanoparticle attachment, Ostwald ripening, and nanoparticle coalescence lead to a competitive growth mode giving. B The snapshot image illustrates the LPTEM observation of Pd nanoparticle coalescence with nanowire locally. C Right: TEM image of Pt coated non-chiral AuAg seed nanowire giving a core-shell nanowire with rough surface (this is an intermediate after 5 min growth imaging via cryo-TEM) showing lots of Pt nanoparticles attachment highlighted in red arrow. Left: HRSTEM image showing both Pt atom deposition (red arrow) and Pt nanoparticle coalescence in Pt 〈111〉 direction (yellow arrow). D TEM images showing different types of metal deposition on non-chiral AuAg seed non-chiral nanowire giving a core-shell nanowire with nanoparticles attachment which includes Pd, Au, Ni, Cu, and Ru. The red arrows show the position of the nanoparticle coalescence which region is highlighted in red color on nanowire (these are intermediates after 5 min growth imaging via cryo-TEM).

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