40 results about "Nanoelectrochemistry" patented technology

The present invention relates to methods for producing a patterned surface having nanoscale features. The present invention more particularly relates to tip-induced nanoelectrochemical oxidation methods for nanoscale patterning. The invention also relates to the nanoscale patterns produced thereby.

A method is provided for forming a NanoElectroChemical (NEC) cell. The method provides a bottom electrode with a top surface. Nanowire shells are formed. Each nanowire shell has a nanowire and a sleeve, with the nanowire connected to the bottom electrode top surface. A top electrode is formed overlying the nanowire shells. A main cavity is formed between the top electrode and bottom electrodes, partially displaced by a first plurality of nanowire shells. Electrolyte cavities are formed between the sleeves and nanowires by etching the first sacrificial layer. In one aspect, electrolyte cavities are formed between the bottom electrode top surface and a shell coating layer joining the sleeve bottom openings. Then, the main and electrolyte cavities are filled with either a liquid or gas phase electrolyte. In a different aspect, the first sacrificial layer is a solid phase electrolyte that is not etched away.

The invention discloses a method for preparing a nano-electrochemical aptamer sensor for detecting stress-induced phosphoproteins. A manganese-doped nickel-based metal framework compound Mn-MOF is prepared by a solvothermal method and drip-coated on the surface of a glassy carbon electrode GCE. , and then drop-coated methylene blue end-labeled single-stranded nucleic acid aptamer MB-DNA to construct the MB-DNA / Mn-MOF / GCE sensing interface. Adding the stress-induced phosphoprotein STIP1, the MB-DNA aptamer specifically binds to STIP1 to form a MB-DNA / STIP1 complex, which detaches MB-DNA from the surface of GCE and causes the peak intensity of MB oxidation current to weaken. The linear relationship between MB current peak intensity and STIP1 concentration was fitted to construct a nano-electrochemical aptasensor for detecting STIP1. The method of the invention is convenient to operate, has high sensitivity and good specificity, and can be used as a new method for quantitative detection of STIP1.

The invention provides a preparation method of a stainless steel middle frame and aluminum alloy die-casting plate structure. The preparation method comprises the following steps that (1) a stainless steel plate is subjected to CNC machining to be a stainless steel middle frame, and the stainless steel middle frame is subjected to nano-electrochemical corrosion treatment, so that nano holes with the diameter being 100-200 nm are formed in the surface of the stainless steel middle frame; (2) aluminum alloy die-casting is conducted, specifically, an aluminum alloy with the silicon quantity being 5%-10% is selected and subjected to casting through a die-casting machine and a die-casting mould to be formed into an aluminum alloy die-casting plate, and the aluminum alloy die-casting plate is subjected to nano-electrochemical corrosion treatment, so that nano holes with the diameter being 40-60 nm are formed in the surface of the aluminum alloy die-casting plate; (3) the stainless steel middle frame obtained in the step (1) and the aluminum alloy die-casting plate obtained in the step (2) are subjected to plasma welding treatment to obtain a stainless steel and aluminum alloy composite body; (4) the stainless steel and aluminum alloy composite body is subjected to nano injection molding machining; (5) a workpiece obtained in the step (4) is subjected to CNC machining treatment; and (6) a workpiece obtained in the step (5) is subjected to baking varnish, PVD and electrophoresis treatment.

The invention provides a method for preparing monodisperse flower-like gold / platinum hybrid nano-particles with different particle sizes. The method adopts a green chemical method to prepare the monodisperse flower-like gold / platinum hybrid nano-particles with the assistance of sodium citrate. The method is characterized in that gold nano-particles protected by the sodium citrate are taken as seeds, and flower-like platinum shells are further grown on the surfaces of the gold nano-particles so as to prepare the monodisperse flower-like gold / platinum hybrid nano-particles. The method has the advantages of simplicity and convenience, and provides an achievable way for synthesizing the monodisperse flower-like gold / platinum hybrid nano-particles with high quality and different particle sizes. The obtained monodisperse flower-like gold / platinum hybrid nano-particles with different particle sizes of between 6 and 35 nanometers can achieve important application in the fields of fuel cells, nanometer electrochemistry and the like.