Abstract: Apparatuses and methods for producing covetic materials by exciting a hydrocarbon gas with pulse microwaves to form hydrocarbon radicals in a hot first region of a microwave reactor. Graphene nanoplatelets are formed by the nucleation, growth, and assembly of the hydrocarbon radicals, and contact a metal melt introduced downstream of the hot region to produce a mixture of molten metal and graphene nanoplatelets which assemble in-flight to form covetic materials.

Abstract: A multicolor visual display apparatus for stereophonic sound signals is disclosed. The display apparatus includes a conventional three gun color cathode ray tube, having a screen with a plurality of colored phosphor dot triads. Stereophonic signals are coupled to a deflection yoke located on the neck of the tube for producing a pattern on the screen in sympathy with the information content of the channels. The convergence coils and purity rings normally located at the rear of the yoke on a three gun color tube neck are not used. Their absence permits the location of the deflection yoke behind its normal position whereby electrons from any of the guns strike phosphor dots of different colors in different regions of the screen, producing a pleasing multicoloration of the pattern. A coil in the nature of a standard degaussing coil is activated while the pattern is displayed to further enhance this multicoloration.