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Nanodevices, Nanoelectronics, and Nanosensors

Nanodevices, Nanoelectronics, and Nanosensors. Rational You ITRI-IEK-NEMS 2001/08/01. Source: IWGN (1999/09). Organic nanostructures. on left, showing self-assembly of benzene-1,4-dithiol onto Au electrodes;

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Nanodevices, Nanoelectronics, and Nanosensors

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  1. Nanodevices, Nanoelectronics, and Nanosensors Rational You ITRI-IEK-NEMS 2001/08/01 Source: IWGN (1999/09)

  2. Organic nanostructures • on left, showing self-assembly of benzene-1,4-dithiol onto Au electrodes; • on right, showing room-temperature I-V measurements suggesting presence of a Coulomb gap Source: IWGN (1999/09), M. Reed et al. 1997

  3. Logical design of a defect-tolerant circuit (a) shows a “fat tree” architecture in which every member of a logical level of the tree hierarchy can communicate with every member at the next level; in the case of a defective component, this structure enables one to route around and avoid the defect; (b) shows how this architecture is implemented using cross bars, which are very regular structures and look like something that can be built chemically. Source: IWGN (1999/09)

  4. Atomic structure of one of the molecular switches • This molecule conducts via resonant tunneling through unoccupied molecular orbitals when it is in its reduced chemical state (switch closed), but it is a tunneling barrier in its oxidized state (switch open). • The switch can be closed electronically in a solid-state circuit by applying the appropriate voltage across the molecule (Balzani et al. 1998; Credi et al. 1997). Source: IWGN (1999/09)

  5. I-V of a large number of molecular switches • Initially, the molecular switches are closed, and applying a negative voltage across the molecules results in a “large” current flow that varies exponentially with the magnitude of the applied voltage. • This portion of the I-V curve is highly reproducible until the potential across the molecule exceeds +1 V. • This voltage irreversibly oxidizes the switches, and after this process, applying a negative voltage results repeatedly in a “small” current, demonstrating that the switch is open. Source: IWGN (1999/09)

  6. Synthesis of the active molecular compound and its precursors • --- Source: IWGN (1999/09)

  7. Field-effect transistor based on a single 1.6 nm diameter carbon nanotube • --- Source: IWGN (1999/09), Martel et al. 1998

  8. Commercial IBM GMR Read Head • --- Source: IWGN (1999/09)

  9. Nano-electronics: device and architecture options for high-performance electronics • --- Source: IWGN (1999/09)

  10. Resonant tunneling device • --- Source: IWGN (1999/09), (Moffat 1999

  11. Resonant tunneling adder cor • --- Source: IWGN (1999/09), (Seabaugh 1998

  12. Avionics roadmap • --- Source: IWGN (1999/09)

  13. Nanobiological anticancer agent PK1 • --- Source: IWGN (1999/09), Lee 1998

  14. Models for 3” self-assembled robots • Three-inch-diameter self-assembled robots mark the spot where an unexploded mine rests under the surface. • Such robots are cheap, solar-powered, and have no processor to make application or miniaturization difficult. Source: IWGN (1999/09)

  15. Integrated Nanotechnology in Microsystems • The control of mechanical, electrical, optical, and chemical properties at the nanoscale will enable significant improvements in integrated microsystems. Source: IWGN (1999/09)

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