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  • Khomutov, G.B., et al. (författare)
  • Interfacial nanofabrication strategies in development of new functional nanomaterials and planar supramolecular nanostructures for nanoelectronics and nanotechnology
  • 2003
  • Ingår i: Microelectronic Engineering. - Elsevier. - 1873-5568. ; 69, s. 373-383
  • Tidskriftsartikel (refereegranskat)abstract
    • Clusters, nanoparticles, nanowires, long molecules as nanotubes and polynucleotides, and functional supramolecular nanostructures are currently considered as potential building blocks for nanotechnology and nanoelectronic devices and circuits, and development and introduction of new methods to control effectively their structure, composition and nanoscale organization are necessary. Here we describe a number of new nanofabrication methods which are based on the monolayer techniques, biomimetic principles, interfacial reactions and interactions. The methods allowed to produce new stable reproducible planar one-dimensional and two-dimensional arrays of ligand-stabilized nanoclusters and nanoparticles on solid substrates, ultrathin polymeric nanoscale-ordered mono- and multilayer quasi-crystalline and nanocomposite films, planar polymeric complex films with integrated DNA and inorganic building blocks as semiconductor and iron oxide nanoparticle quasi-linear arrays and nanowires. Transmission electron microscopy, STM and AFM techniques were used to characterize the fabricated nanostructures. Effects related to discrete electron tunneling were observed in the monolayers of nanoclusters and small gold nanoparticles at room temperature using STM.
  • Khomutov, G.B., et al. (författare)
  • Organized planar nanostructures from ligand-stabilized nanoclusters: a route to molecular nanoelectronic devices
  • 2004
  • Ingår i: Applied Surface Science. - Elsevier. - 1873-5584. ; 226, s. 149-154
  • Tidskriftsartikel (refereegranskat)abstract
    • In present work, we describe the formation and deposition of mixed Langmuir monolayers composed of inert amphiphile molecular matrix and guest ligand-stabilized metal-core nanoclusters. Such approach allowed obtaining the ordered stable reproducible planar monolayer and multilayer nanocluster nanostructures on solid substrates. The use of novel polymeric Langmuir monolayers formed by amphiphilic polyelectrolytes and nanoclusters resulted in fabrication of ultimately thin monomolecular nanoscale-ordered stable planar polymeric nanocomposite films. Morphology and electron transport in fabricated nanostructures were studied experimentally using AFM and STM. The perspectives for nanoelectronic applications of organized planar nanostructures from ligand-stabilized nanoclusters are discussed.
  • Koksharov, Yu.A., et al. (författare)
  • Magnetostatic interactions in planar ring-like nanoparticle structures
  • 2006
  • Ingår i: 13th Intl Congr on Thin Films and 8th Intl Conf on Atomically Controlled Surf, Interfaces and Nanostr, Stockholm, Sweden (2005),Stockholm, Sweden,2005-06-19 - 2005-06-23. - Elsevier.
  • Tidskriftsartikel (refereegranskat)abstract
    • Numerical calculations of equilibrium state energies and local magnetic fields in planar ring-like nanoparticle structures were performed. The dipole–dipole, Zeeman and magnetic anisotropy interactions were included into the model. The result of their competition depends on the value of the external magnetic field, magnetic parameters of an individual nanoparticle, size and shape of the structures. Flux-closed vortexes, single domain, two- domain ‘‘onion’’-like, ‘‘hedgehog’’-like and more complex spin structures can be realized. The critical field, providing a sharp transition from the flux-closed vortex to the ‘‘onion’’-like state, can be regulated by a variation of the particle magnetization and anisotropy constant, their easy directions, and particle space arrangement.
  • Suyatin, Dmitry, et al. (författare)
  • Metal nanoelectrodes for molecular transistor and investigation of electron transport in molecular systems.
  • 2003
  • Ingår i: 10TH INTERNATIONAL SYMPOSIUM ON NANOSTRUCTURES: PHYSICS AND TECHNOLOGY,St. Petersburg, Russian Federation,2002-06-17. - SPIE.
  • Konferensbidrag (övrigt vetenskapligt)abstract
    • Gold nanoelectrodes with gaps of less than 10 nm were formed by conventional E-beam lithography on silicon substrates covered by Al2O3. Molecular films were deposited on the electrodes by Langmuir-Shaefer technique. The I-V curves of such systems show a suppressed conductance indicating a correlated electron tunnelling through the system. All measurements were made at room temperature.
  • Suyatin, Dmitry, et al. (författare)
  • Properties of electrical contacts to filamentary nanocrystals
  • 2007
  • Ingår i: Vestnik Voronezskogo Gosudarstvennogo Tehnicheskogo Universiteta. ; 3:11, s. 67-70
  • Tidskriftsartikel (refereegranskat)abstract
    • We investigated properties of electrical contacts to filamentary nanocrystals based on InAs, synthesized by chemical-beam epitaxy. Robust, low resistive Ohmic contacts were manufactured to InAs segment of filamentary nanocrystals both directly and indirectly, through a catalytic particle at the top of nanocrystals. Current-voltage characteristics and degradation characteristics of devices based on InAs nanocrystals with electrical contacts are presented. It was determined, that properties of electrical contacts to nanocrystals can be improved by excluding natural oxide layer on the interface between metal and nanocrystal material.
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