Abstract: A heat sink includes a casing and a capillary structure. The casing includes a chamber filled with a working fluid. The capillary structure is located in the chamber. The capillary structure includes a plurality of capillary pores of different diameters. The capillary structure includes at least one supporting portion connected to a substrate. The substrate and the at least one supporting portion abut two opposite inner faces of the casing, respectively.

Abstract: Methods, systems, and computer programs are presented for creating notifications for resources shared or posted by connections of a member. One method includes an operation for accessing databases to collect member information that includes first-degree connections and information about each first-degree connection. Further, a list of first-degree connections is stored in a data store with information about each first-degree connection. The method further includes operations for detecting a resource associated with a first member, and for accessing the data store to obtain network connections (first- and second-degree connections) of the first member. For each network connection of the first member, the method determines if the resource is relevant for the network connection based on the retrieved member information. Further, the method includes generating a notification about the resource for one or more of the network connections based on a relevance of the resource to the network connection.

Abstract: A heat sink is used to solve the problem of poor capillary effect of a conventional vapor chamber. The heat sink comprises a casing having a chamber filled with a working fluid. The heat sink further comprises at least one metal net disposed in the chamber. The at least one metal net includes a plurality of first metal wires and a plurality of second metal wires. The plurality of first metal wires and the plurality of second metal wires interlace with each other and are woven to form a plurality of holes. Each of the plurality of holes is surrounded and defined by adjacent first metal wires and adjacent second metal wires. The plurality of holes has at least two different sizes.

Abstract: A heat sink includes a casing and a capillary structure. The casing includes a chamber filled with a working fluid. The capillary structure is located in the chamber. The capillary structure includes a plurality of capillary pores of different diameters. The capillary structure includes at least one supporting portion connected to a substrate. The substrate and the at least one supporting portion abut two opposite inner faces of the casing, respectively.

Abstract: A composite gel-type polymer electrolyte membrane, as a separator between the positive and the negative electrode for secondary battery, consists of crosslinked gel-type polyacrylonitrile (PAN) electrolytes, polyvinylidene fluoride (PVDF) polymers and liquid electrolytes. The crosslinked gel-type PAN electrolytes are copolymerized by acrylonitrile (AN) monomers and crosslinked monomers with two terminal acrylic acid ester function groups. The PVdF can be PVdF-co-HFP polymers containing over 80% PVdF. The liquid electrolytes are made from using nonaqueous solvents to dissolve alkaline or alkaline earth metallic salts. This invention has advantages of superior ionic conductivities and mechanical strength at high temperature, fine compatible to positive and negative electrodes and potential to be industrialized.