| 摘要 |
Methods and compositions of matter are described for assemblies of anisotropic nanoparticles. A method, includes forming a substantially close packed dense layer by assembling a plurality of anisotropic nanoparticles, each of the plurality of anisotropic nanoparticles having a) a first dimension that is substantially different than both a second dimension and a third di-mension and b) a non-random nanoparticle crystallographic orientation that is substantially aligned with the first direction, wherein assembling includes mechanically interacting the plurality of anisotropic nanoparticles by imposing a delocalized force that defines a direction that is substantially perpendicular to a basal plane of the substantially closed packed dense layer; and imposing a fluctuating force to which the anisotropic nanoparticles respond, wherein fluctuations in a magnitude of the imposed force are sufficient to over-come a short range weak attractive force between members of the plurality of anisotropic nanoparticles with respect to anisotropic nanoparticles that are not substantially overlapping. The plurality of anisotropic nanoparticles are substantially aligned with respect to each other to define the substantially close packed dense layer and the substantially closed packed dense layer has a non-random shared crystallographic orientation that is substantially aligned with the basal plane of the substantially close packed dense layer. A composition of matter, includes a plurality of anisotropic nanoparticles that are in physical contact with one another, each of the plurality of anisotropic nanoparticles having a) a first dimension that is substantially different than both a second dimension and a third dimension and b) a non-random nanoparticle crystallographic orientation that is substantially aligned with the first direction. The plurality of anisotropic nanoparticles are substantially aligned with respect to each other to define a substantially close packed dense layer having a non-random shared crystallographic orientation that is substantially aligned with a basal plane of the substan-tially close packed dense layer.
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