Self-directed growth

Define the relationship with your mentor. Tflfce responsibility for self-directed growth. You and your mentor should decide on the approach and means to reach your goals. This can include telephone calls and electronic communications, as well as meetings arranged when it is mutually convenient. 

Due to the relative ease of carrying out the reaction and the versatility of the process, the hydrosilylation reaction has been used in a number of interesting extensions and applications. Here several of them are highlighted. In one report, Lop-inski and coworkers used the same concept of the radical-initiated hydrosilylation reaction on the Si(100)-2 x 1 surface to induce self-directed growth of molecular wires on the surface [141]. On the Si(100)-2 x 1 surface, the radical chain reaction propagates primarily along the direction of the dimer row, leading to lines of... 

P. Kruse, E. R. Johnson, G. A. DiLabio and R. A. WoLkow, Patterning of vinylferrocene on H-Si(lOO) via self-directed growth of molecular lines and STM-induced decomposition, Nano Letters 2, 807 (2002). 

Chad A. Mirkin and T. Andrew Taton, Semiconductors meet biology. Nature, 405 (2000), 626-627. G. P. Lopinski, D. D. M. Way ner and R. A. Wolkow, Self-directed growth of molecular nanostructures on silicon. Nature, 406 (2000), 48-51. 

G. P. Lopinski, D. D. M. Wayner and R. A. Wolkow, Self-directed growth of molecular nanostructures... 

DiLabio GA, Piva PG, Kmse P, Wolkow RA (2004) Dispersion interactions enable the self-directed growth of linear alkane nanostructures covalently bound to silicon. J Am Chem Soc 126 16048-16050... 

Crystallization amounts by nature to the self-assembly of very large, boundaryless supramolecular species. Its control is a goal of major importance in order to be able to generate solid-state materials of specific structural and physical properties (see also Sections 7.1, 7.2, 9.4.4 [7.39-7.42, 9.105, 9.245]). Supramolecular effects play a crucial role. Directional growth of materials may be induced by a template and involve molecular recognition [9.246], occurring by epitaxy [9.247] or on oriented thin films [9.248]. 

Moreover, nanostructured materials are useful for the construction of NE. For example, a carbon NE has been reported by sealing of a carbon nanotube under an insulator layer [27]. NE ensembles have been obtained through self-assembling of gold nanoparticles [28] and carbon nanotubes [29] at derivatized substrates. Another interesting approach is the direct growth of carbon nanotubes on electrodes with dispersed catalytic nickel nanoparticles. In this case, highly dispersed carbon NE ensembles can be constructed [30]. 

Furthermore, a ID ribbon-like coordination polymer could be obtained by the coordination of 2,5-dihydroxybenzohydroquinone (DHBQ) with Cu(II) ions in aqueous solution directly at the solid-hquid interface on an Au(lll) substrate. The authors advocate a surface-assisted self-organized growth mechanism, which involves in-situ deprotonation and metal coordination... 

Supported zeolite membranes have been prepared using numerous procedures [4] such as alignment of crystals in electrical fields, electroplating, self-assembly, growth on organic molecular layers, covalent linkages, hydrothermal synthesis (in situ and ex situ), microwave-heating-assisted hydrothermal method, dry gel method (vapor-phase transport method and steam-assisted crystallization), synthesis at the interface between two fluid phases, and direct filtration of pre-exfoliated zeolite nanosheets. 

Law JBK, Koo CK, Thong JTL. Horizontally directed growth of carbon nanotubes utilizing self-generated electric field from plasma induced surface charging. Appl Phys Lett 2007 91 2431081-3. 

Ismach A, Joselevich E. Orthogonal self-assembly of carbon nanotube crossbar architectures by simultaneous graphoepitaxy and field-directed growth. Nano Lett2006 6 1706-10. 

The result of this synthesis method was first shown for MWNTs for both PECVD [16] and CCVD [50], called nanotubes forests . This type of growth is due to the high density of NP close to each other, so that the CNTs interact with each other through van der Waals forces, self-directing themselves perpendicularly to the substrate during growth [86]. 

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