摘要:
Provided is an etchant for a semiconductor process, which contains a sulfonic acid compound, a halogen ion, nitric acid or a nitric acid ion, an organic cation, and water.
摘要:
A method of forming a conductive/nonconductive pattern on a conductive particle-coated fabric uses chemical etching techniques to remove specific areas of conductive material from the fabric, producing non-conductive areas where the fabric was exposed to an etching agent, and leaving conductive areas where the conductive coating was protected by an etch-resistant coating.
摘要:
A method for the wet-chemical polishing of molded zinc parts, the molded parts being brought in contact with an acid solution and said acid solution containing only sulfuric acid and phosphoric acid as the strong acids.
摘要:
In a method for surface-modifying a neural electrode, a neural electrode array is formed, first and second metal nanoparticles having different solubilities with respect to an etching solution are simultaneously electrode-deposited on a surface of the neural electrode array, and the second metal nanoparticles are selectively etched using the etching solution, thereby forming a porous structure including the first metal nanoparticles on the surface of the neural electrode array.
摘要:
A method of patterning a conductor on a substrate includes providing an inked elastomeric stamp inked with self-assembled monolayer-forming molecules and having a relief pattern with raised features. Then the raised features of the inked stamp contact a metal-coated visible light transparent substrate. Then the metal is etched to form an electrically conductive micropattem corresponding to the raised features of the inked stamp on the visible light transparent substrate.
摘要:
Compositions useful for the selective removal of titanium nitride and/or photoresist etch residue materials relative to metal conducting, e.g., tungsten, and insulating materials from a microelectronic device having same thereon. The removal compositions contain at least one oxidant and one etchant, may contain various corrosion inhibitors to ensure selectivity.
摘要:
Compositions and processes for leaching noble metals from materials comprising said noble metals. Advantageously, the halide-based composition is environmentally friendly and effectively removes noble metals at room temperature without the need for high pressures and electrodes.
摘要:
The present invention discloses a process for electroless plating of a metal or metal alloy onto copper features of an electronic device such as a printed circuit board which suppresses undesired skip plating and extraneous plating. The process comprises the steps i) providing such a substrate, ii) activating of the copper features with noble metal ions; iii) removing excessive noble metal ions or precipitates formed thereof with an aqueous pre-treatment composition comprising an acid, a source for halide ions and an additive selected from the group consisting of thiourea, thiourea derivatives and polymers comprising thiourea groups, and iv) electroless plating of a metal or metal alloy layer.
摘要:
Example embodiments relate to a nanostructure including a conductive region and a nonconductive region, wherein the conductive region includes at least one first nanowire, and the nonconductive region includes at least one second nanowire that is at least partially sectioned, a method of preparing the nanostructure, and a panel unit including the nanostructure.
摘要:
The present invention provides a metal stripping additive, composition containing the same, and method for stripping metal by using the composition. The metal stripping additive comprises a phosphate, a carbonate, and a component selected from at least one of citric acid or a derivative thereof, oxalate or a derivative thereof, malate or a derivative thereof. The metal stripping additive is used with nitric acid as the metal stripping composition of the present invention. The present method has advantages of being capable of stripping various metals, low corrosion, low toxicity, and being applicable under ambient temperature.