Patent ID: 7973267

Claim:
Apparatus for levitation of an amount of conductive material, comprising a coil for keeping the material in levitation using a varying electric current in the coil, wherein the apparatus comprises two coils, a first coil and a second coil, wherein both coils have been placed in a vacuum chamber for a vacuum of at least 10.sup.-3 mbar during use, both coils for generating an alternating electromagnetic field during use, the alternating electromagnetic field of the first and the second coil counteracting each other, wherein the coils are rotatable and/or displaceable together so as to change the center line of the coils, and wherein a tube of non-conductive material is placed inside the coils such that the tube is present between the coils and the conductive material during use, and wherein the first and second coils are positioned such that the conductive material that is kept in levitation between the first coil and the second coil is evaporated and the evaporated material flows along the direction of the center line of the coils inside the tube of non-conductive material to a substrate to be coated.