Abstract:
A method of fabricating a composite field emission source is provided. A first stage of film-forming process is performed by using RF magnetron sputtering, so as to form a nano structure film on a substrate, in which the nano structure film is a petal-like structure composed of a plurality of nano graphite walls. Afterward, a second stage of film-forming process is performed for increasing carbon accumulation amount on the nano structure film. Therefore, the composite field emission source with high strength and nano coral-like structures can be obtained, whereby improving the effect and life of electric field emission.
Abstract:
A graphene base, including: graphene; and a substrate, wherein the graphene is formed directly on at least one surface of the substrate, and at least about 90 percent of an area of the surface of the substrate does not have a graphene wrinkle.
Abstract:
A graphene base, including: graphene; and a substrate, wherein the graphene is formed directly on at least one surface of the substrate, and at least about 90 percent of an area of the surface of the substrate does not have a graphene wrinkle.
Abstract:
An electron emission device includes a number of second electrodes intersected with a number of first electrodes to define a number of intersections. The first electrode includes a carbon nanotube layer and a semiconductor layer coated on the carbon nanotube layer. An insulating layer is sandwiched between the first electrode and the second electrode at each of the number of intersections, wherein the semiconductor layer is sandwiched between the insulating layer and the carbon nanotube layer.
Abstract:
A method of fabricating a composite field emission source is provided. A first stage of film-forming process is performed by using RF magnetron sputtering, so as to form a nano structure film on a substrate, in which the nano structure film is a petal-shaped structure composed of a plurality of nano graphite walls. Afterward, a second stage of film-forming process is performed for increasing carbon accumulation amount on the nano structure film and thereby growing a plurality of nano coral-shaped structures on the petal-shaped structure. Therefore, the composite field emission source with high strength and nano coral-shaped structures can be obtained, whereby improving the effect and life of electric field emission.
Abstract:
A field emission device may comprise: an emitter comprising a cathode electrode and an electron emission source supported by the cathode electrode; an insulating spacer around the emitter, the insulating spacer forming an opening that is a path of electrons emitted from the electron emission source; and/or a gate electrode around the opening. The electron emission source may comprise a plurality of graphene thin films vertically supported in the cathode electrode toward the opening.
Abstract:
Disclosed is monolayer and/or few-layer graphene on metal or metal-coated substrates. Embodiments include graphene mirrors. In an example, a mirror includes a substrate that has a surface exhibiting a curvature operable to focus an incident beam onto a focal plane. A graphene layer conformally adheres to the substrate, and is operable to protect the substrate surface from degradation due to the incident beam and an ambient environment.
Abstract:
Methods of forming a metal nanoparticle-graphene composite are provided. The methods include providing a functionalized hydrogen exfoliated wrinkled graphene (f-HEG) substrate and dispersing metal nanoparticles on a first major surface of the f-HEG substrate to form the metal nanoparticle-graphene composite.
Abstract:
A method of fabricating a composite field emission source is provided. A first stage of film-forming process is performed by using RF magnetron sputtering, so as to form a nano structure film on a substrate, in which the nano structure film is a petal-like structure composed of a plurality of nano graphite walls. Afterward, a second stage of film-forming process is performed for increasing carbon accumulation amount on the nano structure film and thereby growing a plurality of nano coral-like structures on the petal-like structure. Therefore, the composite field emission source with high strength and nano coral-like structures can be obtained, whereby improving the effect and life of electric field emission.
Abstract:
본 발명은 전자 방출 소자용 스페이서 및 이를 구비한 전자 방출 소자에 관한 것으로서, 본 발명은 전자 방출부가 제공되는 제1 기판과, 형광층이 제공되는 제2 기판 사이에 배치되어 제1 기판과 제2 기판의 간격을 유지시키는 전자 방출 소자용 스페이서에 있어서, 홈부를 구비하는 적어도 하나의 수평 부재와, 이 홈부를 통하여 수평 부재와 상호 결합되는 적어도 하나의 수직 부재를 포함하는 전자 방출 소자용 스페이서를 제공한다. 또한, 본 발명은 서로 대향 배치되는 제1 기판 및 제2 기판과, 제1 기판에 형성되는 구동 전극들과, 구동 전극들의 전압에 의해 전자 방출이 제어되는 전자 방출부와, 제2 기판에 전자 방출부에 대응하여 배치되는 형광층과, 형광층의 일면에 형성되는 전자 가속 전극 및 상기의 수평 부재와 수직 부재로 구성된 스페이서를 포함하는 전자 방출 소자를 제공한다. 전자 방출 소자, 스페이서, 수평 부재, 수직 부재, 캐소드 전극, 게이트 전극,집속 전극