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Author:
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ISBN: 9780854049882
Category :
Languages : en
Pages : 0
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Book Description
Author:
Publisher:
ISBN: 9780854049882
Category :
Languages : en
Pages : 0
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Author:
Publisher:
ISBN:
Category : Biotechnology
Languages : en
Pages : 426
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Author: Royal Society of Chemistry
Publisher: Faraday Discussions
ISBN: 9780854049882
Category : Science
Languages : en
Pages : 416
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Book Description
This volume concentrates on the measurement, synthesis, assembly and manipulation of molecular wires and nanostructures. It incorporates the assembly and use of molecules into nanostructures (nanoparticles, quantum dots, catenanes, conducting oligomers, DNA) for electronic switching. Work is presented in the following areas: single molecule conductance; biomolecular conductors; electronic nanostructures; the theory of charge transport in molecular wires and nanostructures; conjugated electronic oligomers; nanogap devices. Faraday Discussions document a long-established series of Faraday Discussion meetings which provide a unique international forum for the exchange of views and newly acquired results in developing areas of physical chemistry, biophysical chemistry and chemical physics. The papers presented are published in the Faraday Discussion volume together with a record of the discussion contributions made at the meeting. Faraday Discussions therefore provide an important record of current international knowledge and views in the field concerned.
Author: C. Joachim
Publisher: Springer Science & Business Media
ISBN: 9780792346289
Category : Technology & Engineering
Languages : en
Pages : 254
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Book Description
This volume contains the proceedings of the NATO Advanced Research Workshop on "Atomic and Molecular Wires". It was sponsored by the Ministry of Scientific Affairs Division special program on Nanoscale Science with the support of the CNRS and the Max Planck Institute. Scientists working or interested in the properties of wires at a subnanoscale were brought together in Les Houches (France) from 6 to 10 May 1996. Subnanoscale wires can be fabricated either by surface physicists (atomic wires) or by synthetic chemists (molecular wires). Both communities present their foremost advances using, for example, STM to assemble atomic lines atom for atom, to fabricate a mask for such a line or using the wide range of chemical synthesis techniques to obtain long, rigid and conjugated oligomers. Interconnecting such tiny wires to sources (voltage, current) continues to demand a great technological effort. But nanolithography associated with microfabrication or STM are now clearly identified paths for measuring the electrical resistance of an atomic or a molecular wire. The first measurements have been reported on Xe , benzene, C ' di(phenylene-ethynylene) showing 2 60 the need for a deeper understanding of transport phenomena through subnanowires. Such transport phenomena like tunnel (off-resonance) transport and Coulomb blockade have been discussed by theorists with an emphasis on the exponential decrease of the tunnel current with the wire length versus the ballistic regime of transport.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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The influence of directing agents in the self-assembly of molecular wires to produce two-dimensional electronic nanoarchitectures is studied here using a Monte Carlo approach to simulate the effect of arbitrarily locating nodal points on a surface, from which the growth of self-assembled molecular wires can be nucleated. This is compared to experimental results reported for the self-assembly of molecular wires when 1,4-phenylenediisocyanide (PDI) is adsorbed on Au(111). The latter results in the formation of (Au-PDI)n organometallic chains, which were shown to be conductive when linked between gold nanoparticles on an insulating substrate. The present study analyzes, by means of stochastic methods, the influence of variables that affect the growth and design of self-assembled conductive nanoarchitectures, such as the distance between nodes, coverage of the monomeric units that leads to the formation of the desired architectures, and the interaction between the monomeric units. As a result, this study proposes an approach and sets the stage for the production of complex 2D nanoarchitectures using a bottom-up strategy but including the use of current state-of-the-art top-down technology as an integral part of the self-assembly strategy.
Author: Gianaurelio Cuniberti
Publisher: Springer
ISBN: 3540315144
Category : Science
Languages : en
Pages : 526
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Book Description
Klaus von Klitzing Max-Planck-Institut fur ̈ Festk ̈ orperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany Already many Cassandras have prematurely announced the end of the silicon roadmap and yet, conventional semiconductor-based transistors have been continuously shrinking at a pace which has brought us to nowadays cheap and powerful microelectronics. However it is clear that the traditional scaling laws cannot be applied if unwanted tunnel phenomena or ballistic transport dominate the device properties. It is generally expected, that a combination of silicon CMOS devices with molecular structure will dominate the ?eld of nanoelectronics in 20 years. The visionary ideas of atomic- or molecular-scale electronics already date back thirty years but only recently advanced nanotechnology, including e.g. scanning tunneling methods and mechanically controllable break junctions, have enabled to make distinct progress in this direction. On the level of f- damentalresearch,stateofthearttechniquesallowtomanipulate,imageand probechargetransportthroughuni-molecularsystemsinanincreasinglyc- trolled way. Hence, molecular electronics is reaching a stage of trustable and reproducible experiments. This has lead to a variety of physical and chemical phenomena recently observed for charge currents owing through molecular junctions, posing new challenges to theory. As a result a still increasing n- ber of open questions determines the future agenda in this ?eld.
Author: Prerna Pandey
Publisher: Delve Publishing
ISBN: 9781773611853
Category :
Languages : en
Pages : 0
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Book Description
Molecular wires are chains of molecules that conduct electric current. These molecules can include natural species like DNA or encompass a range of polymeric organic or inorganic molecules.Recent research has suggested that these molecular wires conduct current at a better rate than that of semiconductors. The potential of self-assembly can be used to assemble several molecules to carry out specific functions. Molecular wires have shown to enhance certain properties of polymers for use in potentiometry. Research suggests the use of nanowires to measure torque at Nano levels. It is proposed that these molecular wires may serve to overcome the limitations associated with the current semi-conductors or macroscopic wires.In 1959, physicist Richard Feynman discussed the possibilities of devices of small dimensions in his lecture entitled ''There's plenty of room at the bottom"-this book compiles various aspects of this field that hopes to pique the potential researcher into exploring this exciting arena.The book serves to cover various aspects of molecular wires like its brief history, research carried out, the potential working, various concepts involving the working and construction and potential applications of these molecular wires.
Author: Yiliang Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 208
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Book Description
Author: Dengfeng Xu
Publisher:
ISBN:
Category : Macrocyclic compounds
Languages : en
Pages : 300
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Book Description
Author: Gunzi Saito
Publisher: Royal Society of Chemistry
ISBN: 1847557600
Category : Technology & Engineering
Languages : en
Pages : 319
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Book Description
The use of conducting molecular materials is a rapidly developing, multidisciplinary field of research, offering a wide variety of possibilities for the future. It is of particular relevance to nano fabrication and technology because it offers high density, small size integrated and multifunctional properties that can be fabricated under mild conditions. Multifunctional Conducting Molecular Materials covers a wide range of topics including: molecular conductors and superconductors; design and synthesis of functional molecular materials; organic/inorganic hybrids and photoinduced phenomena; fullerenes, nanotubes and other related nano materials. The book concludes with a look at integration and functionalities of molecular materials such as organic field effect transistors (OFET). This high level book is ideal for researchers in both industry and academia who are interested in this new and exciting field.
