Nano-news Nanogallery

Two Faraday cages are 1000 times better than a single cage

The genius of experimental physics Michael Faraday has observed that the electric filed cannot penetrate into a box made of metal. Today, a metallic box with a sample in it, intended to prevent electric and electromagnetic fields from reaching the sample, is called a Faraday cage. Yet nothing is 100% proof. Some photons, which carry electric and magnetic fields with them, apparently can leak through a metallic box. But what about two boxes placed one into another, like in a matryoshka doll? Now a group of European scientists, from Finland and Germany, has demonstrated that two Faraday cages provide screening from the electric field that is a thousand times more efficient as compared to just one such cage. The set of two Faraday cages is used to provide an ideal environment to a single-electron trap device. The hold time of their single-electron trap is shown to increase significantly, inside the double-Faraday-cage, due to a suppression of tunneling events assisted by fluctuations of the electric field, which can penetrate through a single Faraday cage. The trap time achieved has increased one thousand time and reached 10 hours, as the device was placed into the double-Faraday-cage.

Two Faraday cages are 1000 times better than a single cage

  All news
Related news:
  • Schrodinger chameleon
  • Quantum cantilevers
  • Van der Waals force and von Klitzing resistance in metallic nano-contacts
  • Metallic Cluster Screen Electric Field Well
  • Single atoms placed on graphene and observed in TEM in real time
  • The substrate is dried off with forced nitrogen gas, and those nanotubes that settled onto the surface of the susbstrate may remain (highlighted). Some of these nanotubes my span the trench.
    Nanowerk Nanotechnology Portal



    Nano-news | Nanosuperconductors | Nanofabrication | Nanophenomena | Journals | Web directory | contacts

    20042012 Copyright by
    Design by UpMrk