New patent to manufacture graphene microwave
Some people afraid or worried when use microwave because of radiation and search to get microwaves with best protected to prevent the radiation , company also search make best way to prevent the radiation A newly published patent filing from Korean company LG reveals the specifications for a next generation microwave oven that enhanced with a graphene door to prevent the radiation inside from leaking out, ensuring more uniform heating.
relates to graphene and, more particularly, to a method for manufacturing a graphene electromagnetic wave blocking plate capable of blocking electromagnetic waves by using graphene, and a microwave oven using same. The present invention includes: a step of forming a first graphene layer and a second graphene layer above and below a catalytic metal layer; a step of attaching a supporting substrate onto the second graphene layer; a step of forming a pattern on at least either one of the first graphene layer or the catalytic metal layer; and a step of removing the supporting substrate.”
A method for manufacturing a graphene electromagnetic wave blocking plate, the method comprising: forming a first graphene layer and a second graphene layer respectively on and beneath a catalyst metal layer; attaching a support substrate to the second graphene layer; patterning at least one of the first graphene layer and the catalyst metal layer; and removing the support substrate.
Accordingly, the second graphene layer 300 may prevent discharge of electromagnetic waves by absorbing the electromagnetic waves, and the metal pattern 110 formed by patterning the catalyst metal layer 100 that is used to grow graphene may serve as a shielding window to shield electromagnetic waves.
In addition, the metal pattern 110, which is formed by patterning the catalyst metal layer 100 that is used to grow graphene, may serve as a shielding window to shield electromagnetic waves.
The catalyst metal layer 100 may be formed of a catalyst metal that is capable of growing graphene and may also serve as an electromagnetic wave shielding window. For example, the catalyst metal may include any one selected from the group consisting of nickel (Ni), cobalt (Co), iron (Fe), platinum (Pt), gold (Au), aluminum (Al), chrome (Cr), copper (Cu), magnesium (Mg), manganese (Mn), molybdenum (Mo), rhodium (Rh), silicon (Si), tantalum (Ta), titanium (Ti), tungsten (W), uranium (U), vanadium (V), and zirconium (Zr), and may be formed of a single layer of any one of these components or alloys of at least two of these components.
To form the graphene layers on and beneath the catalyst metal layer 100, various methods, such as a chemical vapor deposition (CVD) method, may be used.
For example, by providing the catalyst metal layer 100 with a carbon source, such as high-temperature methane (CH.sub.4) or acetylene (C.sub.2H.sub.2), and causing the reaction therebetween, the first graphene layer 200 and the second graphene layer 300 may be formed on and beneath the catalyst metal layer 100.
According to the present invention, providing a door of a microwave oven with a graphene electromagnetic wave blocking plate has the effect of shielding electromagnetic waves to prevent outward leakage of electromagnetic waves emitted to a heating space defined in the microwave oven for cooking of food.