Abstract:
To provide a catalyst for dehydrogenation of formic acid which allows hydrogen, heavy hydrogen gas or heavy-hydrogenated hydrogen containing no carbon monoxide to be produced through dehydrogenation of formic acid in a highly efficient manner.A catalyst for dehydrogenation of formic acid, including: a multinuclear metal complex represented by the following Formula (1), a tautomer or stereoisomer thereof, or a salt thereof, where M1 and M2 denote transition metals and may be the same as or different from each other; Q1 to Q6 each independently denote carbon or nitrogen; R1 to R6 each independently denote, for example, a hydrogen atom, an alkyl group, a phenyl group, a nitro group, a halogen group, a sulfonate group (sulfo group); L1 and L2 each independently denote an aromatic anionic ligand or an aromatic ligand, and may be substituted by one or more substituents; Y1 and Y2 each independently denote any ligand or are absent; and m denotes a positive integer, 0, or a negative integer.
Abstract:
Provided is a production apparatus (100) for continuously producing aligned carbon nanotube aggregates on a substrate supporting a catalyst while continuously transferring the substrate. The production apparatus (100) includes gas mixing prevention means (12, 13) for preventing gas present outside a growth furnace (3a) from flowing into the growth furnace (3a). The gas mixing prevention means (12, 13) includes a seal gas ejection section (12b, 13b) so that the seal gas does not flow into the growth furnace through the openings of the growth furnace. The production apparatus prevents the outside air from flowing into the production apparatus, uniformly controls, within a range suitable to production of CNTs, a concentration distribution(s) and a flow rate distribution(s) of a raw material gas and/or a catalyst activation material on the substrate, and does not disturb gas flow as much as possible in the growth furnace.
Abstract:
A piezoelectric thin film is formed through sputtering and consists essentially of scandium aluminum nitride. The carbon atomic content is 2.5 at % or less. When producing the piezoelectric thin film, scandium and aluminum are sputtered simultaneously on a substrate from a scandium aluminum alloy target material having a carbon atomic content of 5 at % or less in an atmosphere where at least nitrogen gas exists. The sputtering may be conducted also by applying an ion beam on an opposing surface of the alloy target material at an oblique angle. Moreover, aluminum and scandium may be also sputtered simultaneously on the substrate from an Sc target material and an Al target material. As a result, a piezoelectric thin film which exhibits excellent piezoelectric properties and a method for the same can be provided.
Abstract:
The present invention relates to a catalyst for C2 oxygenate synthesis in which a hydrogenated active metal is supported on a porous carrier to synthesize a C2 oxygenate from a mixed gas containing hydrogen and carbon monoxide, wherein the porous carrier has an average pore diameter of 0.1 to 20 nm.
Abstract:
A method is provided for processing a silicon-based wire optical waveguide, by which an optical transmission loss of the silicon-based wire optical waveguide due to ion irradiation with high energy is suppressed, and an end portion of the silicon-based wire optical waveguide that is three-dimensionally curved in a self-aligning manner is obtained. According to the method a protective film is selectively formed on the silicon-based wire optical waveguide exclusive of the end portion of the silicon-based wire optical waveguide; and ions are implanted to the silicon-based wire optical waveguide in a particular direction, so as to curve the end portion of the silicon-based wire optical waveguide to the particular direction in a self-alignment manner.
Abstract:
A semiconductor light emitting element with a design wavelength of λ, comprising a photonic crystal periodic structure having two structures with different refractive indices at each of one or more interfaces between layers that form the light emitting element. The period a and the radius R that are parameters of each of the one or more periodic structures and the design wavelength λ satisfy Bragg conditions. The ratio (R/a) between the period a and the radius R is a value determined so that a predetermined photonic band gap (PBG) for TE light becomes maximum for each periodic structure. The parameters of each periodic structure are determined so that light extraction efficiency of the entire semiconductor light emitting element with respect to light with the wavelength λ becomes maximum as a result of conducting a simulation analysis with a FDTD method using as variables the depth h of the periodic structure that is of greater than or equal to 0.5a and the period a and the radius R that are determined for each order m of the Bragg conditions.
Abstract:
A semiconductor device includes semiconductor layers of a first conductivity-type and a second conductivity-type stacked on a silicon carbide semiconductor and having differing impurity concentrations. Trenches disposed penetrating the semiconductor layer of the second conductivity-type form a planar striped pattern; and a gate electrode is disposed therein through a gate insulation film. First and second semiconductor regions respectively of the first and the second conductivity-types have impurity concentrations exceeding that of the semiconductor layer of the second conductivity-type and are selectively disposed therein. The depth of the second semiconductor region exceeds that of the semiconductor layer of the second conductivity-type, but not that of the trenches. The second semiconductor region is arranged at given intervals along the length of the trenches. In the silicon carbide semiconductor below the trench bottoms, a third semiconductor region of the second conductivity-type and having a floating potential is disposed covering the trench bottoms.
Abstract:
A method for bonding stainless steel members includes: contacting a first stainless steel member with a second stainless steel member that has a strain exceeding 50% reduction; and heating the first and second stainless steel members to a re-crystallization initiation temperature or higher, after the contacting.
Abstract:
A sperm selection unit structure for efficiently separating sperm having favorable motility includes: a storage part which stores semen acquired from an animal therein; a buffer solution flow passage which communicates with the storage part and in which a buffer solution flows in the direction toward the storage part as a laminar flow; and a swim-up passage which communicates with the storage part such that the sperm swim up in the buffer solution flow passage from the storage part, wherein a downstream part of the swim-up passage is formed of a flow passage having a wide width where the buffer solution flows as a slow flow while maintaining a laminar flow state of the buffer solution, and a downstream end portion of the flow passage is opened in a state where the downstream end portion faces a wall surface of the storage part.
Abstract:
A nucleic acid molecule for expressing a foreign gene in a plant, said nucleic acid molecule carrying, in this order, a right border (RB) sequence derived from the T-DNA sequence of an agrobacterium, an expression promoter sequence capable of functioning in the aforesaid plant, a sequence corresponding to the RNA2 genome of cucumber mosaic virus wherein a 2b protein-encoding gene has been partly or entirely substituted by the aforesaid foreign gene, and a left border (LB) sequence derived from the T-DNA sequence of an agrobacterium.