Tags: research seminar

Online Presentations (301-309 of 309)

  1. Towards a Terahertz Solid State Bloch Oscillator

    29 Jan 2004 |

    The concepts of Bloch oscillation and Zener breakdown are fundamental to electron motion in periodic potentials and were described in the earliest theoretical developments of electron transport in solids. But only in the past 10 years have experiments clearly demonstrated various aspects of Bloch...

  2. Quantum Electromechanical Systems: Are we there yet?

    05 Feb 2004 | | Contributor(s):: Andrew Cleland

    Electrons moving in a conductor can transfer momentum to the lattice via collisions with impurities and boundaries, giving rise to a fluctuating mechanical stress tensor. Driving electrons out of equilibrium by applying the voltage across the conductor, one may control this electromechanical noise.

  3. Molecular Electronics Pathway for Molecular Memory Devices

    06 Feb 2004 |

    We have been developing a scale molecular electronic device using a 30 nm sized plant virus particle as the scaffold. This talk describes the bioengineering aspects of how the virus particle is converted to a molecular electronic circuit and its electrical characterization. The talk describes...

  4. Macromolecular Simulation: A Computational Perspective

    16 Feb 2004 | | Contributor(s):: Robert D. Skeel

    The study of cold atomic gases is exploding, driven largely by the rapid experimental developments. This field has become highly interdisciplinary, connecting a great variety of interesting problems: weakly and strongly correlated quantum condensed matters, nuclear matters, and physics of low...

  5. Electronic Transport Through Self-Assembled Monolayers

    25 Feb 2004 | | Contributor(s):: Takhee Lee

    Characterization of charge transport in molecular scale electronic devices has to date shown exquisite sensitivity to specifics of device fabrication and preparation. Thus, intrinsic molecular band structure has been problematic to extract from published results. Here we demonstrate...

  6. Nanoelectronics/Mechanics With Carbon Nanotubes

    26 Feb 2004 |

    In this talk, I will present efforts to understand electrical/mechanical properties of carbon nanotubes (CNTs) by combining electric transport measurements and the scanning probe microscopy.

  7. Contacting Molecules - Chemistry in Molecular Electronics

    12 Apr 2004 |

    The study of the basic electron transport mechanism through molecular systems has been made accessible by fabrication techniques that create metallic contacts to a small number of organic molecules. In my talk, I will discuss some of the groundbreaking discoveries such as the measurement of the...

  8. Structure and Ion Permeation of the Gramicidin Channel using Molecular Dynamics

    12 Apr 2004 |

    Molecular dynamics (MD) has become an essential tool for obtaining microscopic insight into biological function. The gramicidin channel as an excellent benchmark system for this purpose. Using extensive MD simulations with explicit solvent and membrane, we determine the backbone structure and...

  9. Inelastic Effects in Molecular Conduction

    12 Apr 2004 | | Contributor(s):: Abraham Nitzan

    Molecular electron transfer, as treated by the Marcus theory, strongly depends on nuclear motion as a way to achieve critical configurations in which charge rearrangement is possible. The electron tunneling process itself is assumed to occur in a static nuclear environment. In the application of...