Articoli correlati a Atomic and Molecular Wires: 341

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9780792346289: Atomic and Molecular Wires: 341

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There is a growing interest in the connection of a single molecule or a wire of atomic diameter between two electrodes. This has led to the investigation of a class of nanoscale materials: lines of metal atoms of atom-sized cross section, lines of atomic defects, and conjugated oligomers. Several ways to fabricate such materials are discussed, such as the self assembly of metal atoms on a surface under UHV, deposition from, or sliding with an STM tip apex, and local surface modification using a voltage pulse. The synthesis of molecular wires is also presented, the objective being to produce long, low-gap, rigid conjugated oligomers. The electrical connection of a single atomic or a single molecule is more challenging: mechanical (break junction) STM or nanolithographic coplanar junctions are currently being used to measure the resistance of a single nanometer-scale wire. The theoretical problems associated with such measurements involve both solid state physics and quantum chemistry.

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Contenuti

Preface. Atomic Wires. Self Assembling of Metal Lines on Metal Surfaces; J.P. Bucher. Self-Assembled Single Atom Wide Metal Lines on Si(001) Surfaces; J. Nogami. Atomic Depassivation and Metallization of the Si(100)-2x1:H Surface; T.-C. Shen, et al. Controlled Manipulation of Atoms and Molecules and Formation of Nanostructures with the Scanning Tunneling Microscope; G. Meyer, et al. Molecular Wires. Organic Molecular Wires: Theoretical Analysis of the Electronic Coupling to Metal Electrodes and of the Influence of Derivatization; J.L. Brédas, et al. Synthesis for Molecular Electronics: Rigid Rods and Discs; K. Müllen, et al. Synthesis of Molecular Scale Wires and Alligator Clips; D.L. Pearson, et al. Synthesis of Conjugated Ladder Oligomers; A. Gourdon. Synthesis of Nanowires Encapsulated in Carbon Nanotubes by the Arc Discharge Method; H. Pascard. Contacting the Wire: Planar Junction. Molecular Rectification; S. Roth, et al. Nanopatterning of Conducting Polymers and Conductivity Measurements with Nanometer-Spaced Electrodes; S.H.M. Persson, et al. Towards Electrical Transport on Single Molecules. First Results on Nanofabrication and Phthalocyanine Polymers; C. Dekker, et al. Co-Planar Nanojunction to Connect a Single Molecule; V. Rousset, et al. Conductance Quantization in Metallic Nanocontacts: Experimental Results and Novel Theoretical Aspects; N. García, et al. Contacting the Wire: STM Junction. Electrical Resistance of One or Two Atoms; A. Yazdani, et al. Contacting Molecular Nanostructures. Molecular Mechanics, Charge Transfer, and Transport Properties; T.A. Jung, et al. Computation of Electrostatic Fields Around Carbon Tubules Biased by an STM Junction; Ch. Girard,et al. A Proposal of Atom Electronics Based on Atom/Molecule Switching Devices; Y. Wada. Transport Theory. Molecular Wires: Resonances, Staircases, Rectification, Bonding and Speculation; M. Kemp, et al. Tunnel Transport Through a Molecular Wire; M. Magoga, C. Joachim.

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