FIGURE 3. TEM images of binary superlattices self-assembled in the presence of 4 mM oleic acid (left column) and 6 mM tri-n-octylphosphine oxide, TOPO (right column).
From the following article:
Structural diversity in binary nanoparticle superlattices
Elena V. Shevchenko, Dmitri V. Talapin, Nicholas A. Kotov, Stephen O'Brien and Christopher B. Murray
Nature 439, 55-59 (5 January 2006)
doi:10.1038/nature04414
a, 6.2 nm PbSe and 3.0 nm Pd nanoparticles self-assembled into orthorhombic AB- and AlB2-type BNSLs, and b, into NaZn13-type BNSL. c, d, 7.2 nm PbSe and 4.2 nm Ag nanoparticles self-assembled into orthorhombic AB and cuboctahedral AB13 BNSLs, respectively. e, f, 6.2 nm PbSe and 5.0 nm Au nanoparticles self-assembled into CuAu-type and CaCu5-type BNSLs, respectively.
