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A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
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An electrically actuated molecular toggle switch.

Lukas Gerhard1, Kevin Edelmann1,2, Jan Homberg1

  • 1Institut für Nanotechnologie, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany.

Nature Communications
|March 10, 2017
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Summary
This summary is machine-generated.

Researchers developed a molecular switch using a tripodal platform. This switch, actuated by electrical or mechanical stimuli, demonstrates reproducible conductance changes exceeding two orders of magnitude for nanoelectronic applications.

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Area of Science:

  • Molecular electronics
  • Nanotechnology
  • Surface science

Background:

  • Molecular junctions are key for future nanoelectronic devices.
  • Actuation between distinct conductance states is crucial for switches and memory devices.
  • Controlled and reproducible actuation by external stimuli is needed.

Purpose of the Study:

  • To present a novel tripodal platform for molecular switching.
  • To demonstrate controlled actuation of molecular junctions via electrical and mechanical means.
  • To achieve significant and reproducible changes in conductance.

Main Methods:

  • Fabrication of a tripodal platform with a cantilever arm and nitrile group.
  • Utilizing scanning tunneling microscopy (STM) for junction formation and manipulation.
  • Investigating coordinative bond formation between nitrile nitrogen and gold tip.

Main Results:

  • Demonstrated hysteretic switching of junction conductance by over two orders of magnitude.
  • Achieved controlled actuation through both electrical and mechanical stimuli.
  • High reproducibility in toggle switch actuation.

Conclusions:

  • The developed molecular junction functions as a reliable toggle switch.
  • Precise determination of forces in molecular cantilever deformation is possible with STM.
  • This work advances the development of molecular switches for nanoelectronics.