Figure 5
From: Water-Driven Assembly of Laser Ablation-Induced Au Condensates as Mesomorphic Nano- and Micro-Tubes
Microstructures of a typical Au nanotube. (a) TEM BFI showing a varied diameter ranging from ~100 nm on the one end to less than 10 nm on the other end. (b), (c) BFIs magnified from regions indicated byarrows showing encapsulated fcc/MTP nanoparticles with strong Bragg diffraction contrast. (d) Lattice image taken from the bridge (arrow) in (a) showing the nanotube has four defective lamellar layers nearly edge on in the wall and a hollow core with the lamellar wall intop view. (e), (f) Corresponding SAED pattern and intensity profile showing strong broad diffractions with maximum intensity at 2.45, 4.58, and 8.74 cm−1, i.e., plane interspacing 0.408, 0.218, and 0.114 nm, for the tubular lamella wall, nearly superimposed (111)/(200) and (311)-motif of the encapsulated MTP/fcc, respectively. The MTP/fcc encapsulated tubes are Au without appreciable oxygen and impurities according to EDX spectrum inset. The same specimen as in Fig. 4