Nanocrystal template fabrication

Wang, Y.J. Tang, Y. Wang, X.D. Dong, A.G. Shan, W. Gao, Z. Fabrication of hierarchically structured zeolites through layer-by-layer assembly of zeolite nanocrystals on diatom templates. Chem. Lett. 2001, 11, 1118-1119. 

In this paper, we present AFM investigation of the above mentioned processes. An application of PAA for fabrication of magnetic nanocrystals and carbon nanotubes is demonstrated. A possibility of terabit memory production with PAA templates and nanomasks is analyzed. 

Yu et al. [112] reported the fabrication of nanocomposites of onedimensional (ID) titanate nanotubes and rutile nanocrystals by hydrothermal treatment of bulky rutile Ti02 powders. It was performed in a lOM NaOH solution without using any templates and catalysts. The iimer and outer diameters of the nanotubes were approximately 5 and 8 nm, respectively (Table 2). TEM and HRTEM images of the products revealed that many rutile nanocrystals of 5-10 nm attached to the outer surface of the titanate nanotubes. Some rutile nanocrystals of about 5 nm also existed in the interior of the nanotubes. This generates an interesting composite structure that possesses both the surface properties of rutile nanocrystals and the morphology and mechanical properties of titanate nanotubes. 

K. W. Guarini, C. T. Black, Y. Zhang, I. V. Babich, E. M. Sikorski, L. M. Gignac, Low voltage, scalable nanocrystal FLASH memory fabricated by templated self assembly. IEEE Tech.Dig.—Int. Electron Devices Meeting 2003, 541. 

Heath and coworkers [564] describe a rare example of one-dimensional organization in the absence of a template. They fabricated wires of Ag nanocrystals by compressing a dispersion of Ag nanocrystals (4.5 nm) in toluene at the air-water interface in a Langmuir-Blodgett trough. The wires were one... 

Dye sensitized solar cells built without any transparent metal oxide electrodes (ITO or FTO) were presented recently by Kashiwa et The layout of the device is shown in Figure 11. To fabricate such device, titanium dioxide paste was coated directly on a glass substrate. On the top of Ti02 layer, tetrapode-shaped nanocrystals of zinc oxide were deposited by electrospray technique. A layer of metal titanium was sputtered on the top. Following etching of the zinc oxide template produced pores in the titanium layer. 

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