摘要:
The invention relates to a quantum dot. The quantum dot comprises a core including a semiconductor material Y selected from the group consisting of Si and Ge. The quantum dot also comprises a shell surrounding the core. The quantum dot is substantially defect free such that the quantum dot exhibits photoluminescence with a quantum efficiency that is greater than 10 percent.
摘要:
A method for coating inorganic particles with a metal compound is performed by the steps of: preparing a dispersion which comprises a metal salt and inorganic particles in a molten organic material which takes a solid form at 25null C., is converted into a polar liquid by heating and decomposes by further heating; and heating the dispersion, whereby coating the inorganic particles with a metal compound which is converted from the metal salt.
摘要:
A modification system for modifying a tightly-braided electrical harness comprising at least one conductor cable bundle surrounded by a tight braid. The modification system comprising: at least one modification conductor element constituted by at least one conductor cable surrounded by a shielding braid; and at least one spare sheath portion comprising a flexible tube portion mounted in part inside the braid of said harness in such a manner that a first end of said tube extends beyond the end of said harness braid and that the second end of the tube is external to said harness braid, passing through it, at least said portion of the tube that is external to the harness braid being surrounded by a tight braid.
摘要:
A method for processing polymeric positive temperature coefficient conductive material comprising the steps of placing a polymer material inside a plasma processor and then evacuating air therein to form a vacuum state, supplying a reactive gas to the plasma processor; and utilizing a radio frequency power generator for generating a plasma state inside the plasma processor, wherein the reactive gas is being excited to a high-level energy state, and the excited gas will attack the surface of the material to generate active sites. After that, the plasma-treated polymer material is exposed to air, and the radicals resided on the surface of the material will absorb moisture to form peroxide. The material is ground into powder before being placed inside the plasma processor, so that the contact surface can be increased to generate more radicals.
摘要:
Moldable capsules of a conductive loaded resin-based material are created. The moldable capsules comprise a conductive element core radially surrounded by a resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host. The conductive element core comprises between about 20% and about 50% of the total weight of the moldable capsule in one embodiment, between about 20% and about 40% in another embodiment, between about 25% and about 35% in another embodiment, and about 30% in another embodiment. The micron conductive powders are formed from non-metals, that may also be metallic plated, or from metals, that may also be metallic plated, or from a combination of non-metal, plated, or in combination with, metal powders. The micron conductor fibers preferably are of nickel plated carbon fiber, stainless steel fiber, copper fiber, silver fiber, or the like.
摘要:
An oxide superconductor of the present invention characterized in that it comprises: a substrate 1 made of metals having a high melting temperature; at least one oxide intermediate layer 2 and 3 which is formed on at least one surface of the substrate 1; and a thick film oxide superconductor layer 5 which is formed on the oxide intermediate layer 2 and 3 by the liquid phase epitaxial method in which the substrate 1 provided with the oxide intermediate layer 2 and 3 is put into a solution 7 containing the elements comprising an oxide superconductor layer, and is then pulled out from the solution 7.
摘要:
Compositions are provided comprising aqueous dispersions of at least one polyaniline and at least one colloid-forming polymeric acids. New compositions are useful in electronically conductive and semi-conductive layers in electronic devices and other applications. Also provided are methods of making the compositions.
摘要:
A sensor for chemical species or biological species or radiation presenting to test fluid a polymer composition comprises polymer and conductive filler metal, alloy or reduced metal oxide and having a first level of electrical conductance when quiescent and being convertible to a second level of conductance by change of stress applied by stretching or compression or electric field, in which the polymer composition is characterised by at least one of the features in the form of particles at least 90% w/w held on a 100 mesh sieve; and/or comprising a permeable body extending across a channel of fluid flow; and/or affording in-and-out diffusion of test fluid and/or mechanically coupled to a workpiece of polymer swellable by a constituent of test fluid.
摘要:
In accordance with the invention, a composition including a solvent and a functional material is prepared. The solvent includes at least one heterocyclic compound having one or more substituents and containing an oxygen atom as a constituent atom. The functional material is selected from a group including organic EL materials, conductive materials, insulative materials and semiconductive materials. Functional films and functional elements are prepared by using the composition.
摘要:
Conductive ink compositions which can be cured to highly conductive metal traces by means of nullchemical weldingnull include additives which reduce the curing temperatures for use with low-temperature substrates. Conductive ink compositions can be deposited on a substrate coated with a cure temperature reducing agent to reduce the curing temperatures.