Abstract:
This invention relates to a method to characterize an array of polymeri c materials comprising: depositing unsilanizable material onto a silanizable substrate in at least 10 regions, thereafter contacting the substrate with an organosilan e agent thereby silanizing the substrate but not the unsilanizable material in said regions, optionally, partially or completely removing the unsilanizable material, depositing at least 10 polymeric materials onto said regions, and characterizing the materials. This invention also relates to method for forming an array of polymeric materials to be characterized onto a substrate comprising: (a) selecting ten or more polymers, (b) dissolving or suspending each polymer in a separate liquid, and (c) depositi ng a uniform amount of each of the ten or more polymer containing liquids onto a substrate in individual hydrophilic and/or hydrophobic regions. Likewise this inventio n also relates to an array of polymeric materials for use in characterization, comprising: (a) a substrate having multiple regions on the substrate that are not coated with an organosilane and wherein the uncoated regions have a boarder of an organosilane agent coated on the substrate, and (b) a polymer deposited on the regions no t coated with an organosilane agent.
Abstract:
A CsX:Eu phosphor produced by heating a cesium halide with a Europium compound containing one or more halides selected from the group consisting of F, Cl, Br and I. Preferably the Europium compound is selected from the group consisting of EuX'2, and EuX'3 and EuX', X' being one or more halides selected from the group consisting of F, Cl, Br and I. The invention also includes novel phosphors having properties inherent to the manufacturing process as well as other phosphors containing a mixture of Br and Cl in the cesium halide, europium doped phosphor.A method for preparing a binderless phosphor screen using these phosphors and a method for recording and reproducing an X-ray image using such screens are also disclosed.
Abstract:
The present invention is directed to a composition for use as a catalyst in, for example, a fuel cell, the composition comprising platinum, nickel, and iron, wherein (i) the concentration of platinum is greater than 50 atomic percent, the concentration of nickel is less than 15 atomic percent and/or the concentration of iron is greater than 30 atomic percent, or (ii) the concentration of platinum is greater than 70 atomic percent and less than about 90 atomic percent. The present invention is further directed to a process for preparing such a catalyst composition from a catalyst precursor composition comprising platinum, nickel, and iron, wherein the concentration of platinum therein is less than 50 atomic percent.
Abstract:
An improved metal alloy fuel cell electrocatalyst composition containing comprising platinum, molybdenum, and a metal selected from the group consisting of nickel, iron, tin, and tungsten, provided (i) the concentration of each of nickel and iron is less than 70 atomic percent, and (ii) the concentration of nickel or iron is less than 20 atomic percent when the alloy contains both nickel and iron.
Abstract:
A combinatorial method for discovering or optimizing materials is disclosed. The method uses solution-based components that are mixed and dispensed into regions on a substrate for drying and/or heat-treating. The drying and/or heat-treating produces materials that can be tested for a desired property.
Abstract:
The present invention is generally directed to a method and an apparatus for forming an array or a plurality of films on the surface of one or more substrates wherein liquid samples, one deposited on the surface of one or more substrates, are subjected to a non-contact spreading force, such as by moving the substrate(s), which is sufficient to cause the samples to spread over the surface(s) to form respective films thereon. In another embodiment, the liquid samples are spread over the surface of one or more substrates using a flow of pressurized gas. Once formed, one or more of the films may be subjected to a screening process to determine or measure a property thereof.