A three-dimensional chiral nanostructure according to an embodiment of the present invention comprises: metal nanoparticles having a chiral structure: and a coating layer enclosing the metal nanoparticles. The metal nanoparticle is formed in a polyhedral structure having an R region and an S region in which atoms are arranged clockwise and counterclockwise, respectively, in the order of (111), (100), and (110) crystal faces on the basis of the chiral center, wherein at least a portion of the edges form a curve tilting and extending from the R or S region so that the metal nanoparticle has a chiral structure.

The present invention relates to a method for preparing graphene oxide by cutting an end face of a 3-dimensional carbon-based material by electrochemical oxidation and the graphene oxide prepared by the method. The method comprises connecting a piece of a 3-dimensional carbon-based material as an electrode and another piece of a 3-dimensional carbon-based material or inert material as another electrode to the two electrodes of a DC power supply. A working face of one piece of 3-dimensional carbon-based material contacts the surface of an electrolyte solution, and the two pieces are electrified for electrolysis, during which the working face is between -5 mm below and 5 mm above the surface of the electrolyte solution. The graphite lamella on the end face of one piece of the 3 dimensional carbon-based material used as an electrode is expansion-exfoliated and cut into graphene oxide by electrochemical oxidation, to obtain a graphene oxide-containing electrolyte solution.

The present disclosure discloses the laminated ceramic chimp component including an element part having a ceramic main body and an internal electrode placed in the ceramic main body; an external electrode part having a first external electrode and a second external electrode, the first and second external electrodes being provided with side electrodes covering both side surfaces of the ceramic main body, respectively, upper electrodes covering portions of both sides of an upper surface of the ceramic main body, respectively, and lower electrodes covering portions of both sides of a lower surface of the ceramic main body, respectively; and a nano thin film layer formed of electric insulation material and applied to a region including the upper electrodes, the method for manufacturing the same and the atomic layer deposition apparatus for the same.

A quantum dot, a light emitting material, and a manufacturing method of quantum dot are provided. A ratio of an emission intensity to an absorption intensity of the quantum dot at a characteristic wavelength ranges from 1.510.sup.8 CPS/Abs. to 2.010.sup.9 CPS/Abs. The characteristic wavelength is a shorter wavelength of two wavelengths corresponding to half of a maximum intensity of an emission peak of the quantum dot.

A stabilized elementary metal structure is disclosed. The stabilized elementary metal structure may include an elementary metal having at least one layer and having a two-dimensional layer structure, and an organic molecular layer provided on at least one of a top surface and a bottom surface of the elementary metal.

The invention, belonging to the field of membrane technology, presents a method for the high-throughput preparation of carbon nanotube hollow fiber membranes. This method contains three major steps. Firstly, the pristine carbon nanotubes (CNTs) are added into a mixture of concentrated nitric acid and sulfuric acid, which is then heated at 40?80? C. for 0.5?6 hours. Secondly, the surface-functionalized CNTs and polyvinyl butyral (PVB) are dispersed and dissolved, respectively, in organic solvents at a mass ratio of 1:0.2?1:4?8 to form homogeneous spinning solution, which is squeezed into water as shell liquid with water as core liquid at a flow rate ratios of 0.5?5:1 through a spinneret to form CNT/PVB hollow fibers. Finally, the dry fibers are calcinated at 600?1000 ? C. for 1?4 hours in absence of oxygen to produce free-standing CNT hollow fiber membranes. The method involved in this invention is simple and highly efficient without needing any templates, expensive apparatuses and chemicals. Additionally, the obtained electrically conductive CNT hollow fiber membranes feature a high porosity, high water flux and strong acid/alkali resistance.

In one aspect, the present invention provides nano-scale heaters, such as nano-scale thermoacoustic loudspeakers comprising suspended metal nanobridges prepared using atomic layer deposition (ALD). The loudspeakers of the invention are capable of producing audible sound when stimulated with an electrical current or other energetic stimulus. In another aspect, the present invention provides methods of preparing and using such nanodevices.

Described herein are metal nanoparticle superstructures and methods and compounds for making the same.

An array substrate includes a substrate (100) having a plurality of sub-pixel regions. Each sub-pixel region includes: a switching element (1) disposed on the substrate, a conductive planar layer (113) disposed on the switching element (1), and a pixel electrode (111) disposed on the conductive planar layer (113), the pixel electrode (111) being electrically connected to the output electrode (105) of the switching element (1). Such array substrate improves the instability of the device caused by stress between materials, enhances the long-term stability of the device, and simplifies the manufacturing process.

The invention, belonging to the field of membrane technology, presents a method for the high-throughput preparation of carbon nanotube hollow fiber membranes. This method contains three major steps. Firstly, the pristine carbon nanotubes (CNTs) are added into a mixture of concentrated nitric acid and sulfuric acid, which is then heated at 4080 C. for 0.56 hours. Secondly, the surface-functionalized CNTs and polyvinyl butyral (PVB) are dispersed and dissolved, respectively, in organic solvents at a mass ratio of 1:0.21:48 to form homogeneous spinning solution, which is squeezed into water as shell liquid with water as core liquid at a flow rate ratios of 0.55:1 through a spinneret to form CNT/PVB hollow fibers. Finally, the dry fibers are calcinated at 6001000 C. for 14 hours in absence of oxygen to produce free-standing CNT hollow fiber membranes. The method involved in this invention is simple and highly efficient without needing any templates, expensive apparatuses and chemicals. Additionally, the obtained electrically conductive CNT hollow fiber membranes feature a high porosity, high water flux and strong acid/alkali resistance.