表界面化學(xué)反應(yīng)與材料的制備-雜化材料與自組裝(參考版)
2025-01-11 12:38本頁面
【正文】 c) secondary growth from the patterned nanorods。 sample thickness 5 17 nm, defocus 5 80 nm) corresponding to (G). (I) Nanowire array orientation corresponding to (H). (J) HREM image of a nanotube bundle with nanowires inside the pores (scale bar, 10 nm). Image (H) is the highly magnified HREM image o fthe dotted square shown in (J). Figure. Schematic illustration of the multistep, sequential nucleation and growth method leading to truly hierarchical structures: a) creation of nucleation centers on a substrate by, ., micropatterning or microstamping。 ) reveals that the pores of 3 nm2 (with van der Waals volume excluded) are separated by nm from the neighboring ones. Water molecules are not shown for are shown in red. (B) CHQ monomer. (C and D) Top and side views, respectively, of a silver nanowire inside a CHQ nanotubetemplate. The solventaccessible surface model in (C) and the stick model in（ D） ?Fig. 2. HREM images and EDS elemental analysis of the nanowires. (A)Lowmagnification image of the silver nanowires formed in CHQ nanotube templates (scale bar, 100 nm). (B) EDS elemental analysis indicating that the only metal present is silver. La1 and Lb1 are the transitions responsible for the xray fluorescence lines of silver. (C) Magnified image of (A) showing that 1D structures are unidirectional and monodispersed (scale bar, 2 nm). (D) Magnified image of (C) at atomic resolution showing coherent orientations of silver atoms in different wires. The white arrow indicates the wire direction, [110] (scale bar, 1 nm). (E) Image of the nanowire arrays piled over each other (scale bar, 5 nm). Fig. 4 Structural analysis of the singlecrystalline primitive silver nanowire arrays. (A) 3D model of the 4 3 4 silver nanowire arrays. The z axis corresponds to the [110] direction of the fcc lattice. (B) Zone axis notations (in italics) in terms of the nanowire array reference basis. The [100], [010], and [001] directions in this wire array reference basis correspond to [001], [110], and [110] of the fcc lattice, respectively. (C) Top and side views of a primitive silver nanowire model. (D) Selected area diffraction pattern for zone [212] (scale bar, 2 nm21) and simulated pattern (inset). (E) HREM image (scale bar, 1 nm) and simulated image (inset。 (2) 模板合成納米材料 自組裝單分子膜 自組裝單分子膜： 通過表面活性劑的頭基和基底之間產(chǎn)生化學(xué)吸附，在界面上自發(fā)形成有序的單分子層，是一種新型的有機成膜技術(shù)。 ?TEM images Au的自聚焦 Figure Characterization of thin planar opal templates assembled directly on a Si wafer from 855nm spheres. a, Crosssectional SEM image. Assembling a thin layer of colloidal spheres on a silicon substrate ?Natural assembly of silicon photonic bandgap crystals Figure SEM images of planar Si photonic crystals. Crosssectional SEM images are shown as a function of the thickness of the initial opal template for 2 (a), 4 (b), and 16 (c) layers. Figure 11 Characterization of thin planar opal templates assembled directly on a Si wafer from 855nm spheres. a, Crosssectional SEM image. b, Largescale optical photograph, looking down on the wafer. The opal is formed as the
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