![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtH6O3XzfhSFJyTtHrBmULAVViItJmfs4oeGgwY-MOE6mbDzDm_JSZESg7DLez1TzfPUoqwWEbTnyyt9UHmo85fO23u1zUHLfIM8kdeQp-4FRlFhw7cWZG3bhaxDJkJ94JmtelW158sZ0/s400/ABRing.jpg)
A microfabricated gold ring for Aharonov-Bohm type experiments, which test the modulation of quantum-interference contributions of electrons due to the presence of a magnetic field. Dimensions are: 70 nm wide, 20 nm thick with a diameter of about 800 nm.
Source: Christian Schönenberger
Original post by Ryan Munden at http://www.nanopicoftheday.org/
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