Abstract:
The invention presented is a graphite article having predetermined anisotropic characteristics, as well as a process for preparing the article. More particularly, the article is prepared by a process involving determining the desired anisotropic characteristics for a finished flexible graphite article (FIg. 1a); intercalating and then exfoliating flakes of graphite to form exfoliated graphite particles; forming a substrate graphite article by compressing the exfoliated graphite particles into a coherent article formed of graphene layers; and producing a controlled directional alignment of the graphene layers in the substrate graphite article to provide a finished graphite article having the desired anisotropic ratio. The article may be embossed and the relative amount of structure in an embossed flexible graphite wall can and will lead to differing anisotropic properites. The embossing apparatus (10) comprises two opposed elements (20) and (30).
Abstract:
A superconducting heat transfer medium is applied in three basic layers to form a heat transfer device. The first layer (20), which primarily comprises in ionic form various combinations of sodium, beryllium, manganese or aluminum, calcium, boron and dichromate radical, is absorbed into the inner wall of a conduit (4). Subsequently, the second layer (22), which primarily comprises in ionic form various combinations of cobalt, manganese, beryllium, strontium, rhodium, copper, beta -titanium, potassium, boron, calcium, manganese or aluminum, and the dichromate radical, builds on top of the first layer and forms a film. Finally, the third layer (24) is a powder comprising various combinations of rhodium oxide, potassium dichromate, radium oxide, sodium dichromate, silver dichromate, monocrystalline silicon, beryllium oxide, strontium chromate, boron oxide, beta -titanium and manganese dichromate or aluminum dichromate, that evenly distributes itself across the inner conduit surface (16).
Abstract:
Thermal management materials for electronic devices used as heat transfer interfaces between, for example, the mating heat transfer surfaces of a heat- generating, electronic component, such as an integrated circuit (IC) chip, and a thermal dissipation member, such as a heat sink or spreader, for the conductive cooling of the electronic component include a heat spreading material formed of a flexible, lamellar graphite material having a plurality of coarse perforations therein; and a coating of a thermally-conductive phase change material joined to the surface of the graphite material.
Abstract:
An anisotropic thermal conduit having an outer cylindrical tube; and an anisotropic thermal material disposed with the outer cylindrical tube.
Abstract:
반도체 패키지 구조체의 제조 방법이 제공된다. 베이스 기판, 상기 베이스 기판 상에 배치되며, 반도체 소자를 포함하는 다이(die), 상기 다이의 일면 상에 배치되고, 상기 다이에서 생성된 열을 외부로 방출하는 솔더 범프(solder bump) 및 상기 다이의 상기 일면에 대향하는 타면 상에 배치되고, 상기 다이의 상기 반도체 소자에서 생성된 신호를 외부 장치로 전송하는 솔더 볼(solder ball)을 포함하여 이루어질 수 있다.
Abstract:
Methods, systems and an apparatus relating to a heat spreader to be coupled to a heat source having a heat source coefficient of thermal expansion (HS CTE), the heat spreader comprising an anisotropic material having a high expansion axis. The heat spreader also including a surface to be coupled to the heat source, wherein the high expansion axis of the anisotropic material is oblique to the surface of the heat spreader and wherein the high expansion axis of the anisotropic material is oriented at a first angle of rotation about a first axis of the heat spreader wherein the first angle of rotation is selected to optimize a match of a first CTE of the heat spreader with the HS CTE.