In a PVD reactor having a sputter target at the ceiling, a conductive housing enclosing the rotating magnet assembly has a central port for the rotating magnet axle. In the nonlinear optical medium, the optical signal is amplified with a nonlinear effect caused by the pump light. The floating gates are fabricated using sidewall spacers within the trench. The holder can be attached to the wall by stapling, adhesives or other attachment means. A treatment composition is sprayed onto the laundry item with the aid of the water supply in a second rotation step of the drum, when the drum is rotated at a rotary speed which is equal to or greater than a centrifugal adhesion rotary speed. The reactive substance, charged particle beam, and photon beam act in combination to etch the sample at the target area.