Aviation Administration and the Federal Communication Commission prohibits the use of cellphones after the airplane is airborne to avoid interference with navigation. Elemental Ni, Cu, and Ni/Cu absorb noise signals in the 14 Hz to 1 GHz range. Oil and gas production Elemental nickel coating prevents corrosion of the steal tubulars used for drilling. At the core of this industry nickel coats pressure vessels, compressor blades, reactors, turbine blades, and valves. See also Electroless copper deposition Electroless nickel-boron deposititon Nanoparticle Nanomaterial Nanotechnology References Metal plating