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  • Title: Synthesis, two-dimensional assembly, and surface pressure-induced coalescence of ultranarrow PbS nanowires.
    Author: Patla I, Acharya S, Zeiri L, Israelachvili J, Efrima S, Golan Y.
    Journal: Nano Lett; 2007 Jun; 7(6):1459-62. PubMed ID: 17488046.
    Abstract:
    Ultranarrow (1.8 nm) PbS nanowires are synthesized in a single step, under benchtop conditions at relatively low temperature (90 degrees C). The nanowires exhibit a nearly perfect crystal lattice, high width uniformity, and tight side-by-side registry. Two-dimensional (2D) assembly over large areas (>15 microm2) is achieved using the Langmuir Blodgett method. The wire width can be readily controlled in the range 1.8-10 nm by a surface pressure-induced coalescence reaction, as monitored by transmission electron microscopy and Raman spectroscopy. The fluorescence of the 2D assembly shows strong polarization dependence along the long axis of the wires, making the system potentially suitable for orientation-sensitive devices.
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