摘要:
A ridge or groove is formed on a major surface of a semiconductor substrate which is formed on a first electrode and whose major surface having a ridge or groove is slanted to a crystal axis direction from a {001} crystal plane. A first semiconductor layer is formed on the semiconductor substrate, then a semiconductor function layer deviating from a {111} B crystal plane is formed on the first semiconductor layer, then a second semiconductor layer is formed on the semiconductor function layer and then a second electrode is formed on the second semiconductor layer. The ridge or groove extends to the crystal axis direction, and at least one of the first semiconductor layer, the semiconductor function layer and the second semiconductor layer includes phosphorus.
摘要:
A semiconductor light emitting device ccomprises a first cladding layer, an active layer and a second cladding layer which are stacked on a semiconductor substrate. At least a part of the first cladding layer and the second cladding layer has a superlattice structure comprising II-VI compound semiconductor. Another semiconductor light emitting device comprises a first cladding layer, a first guide layer, an active layer, a second guide layer and a second cladding layer which are stacked on a semiconductor substrate. At least a part of the first cladding layer, the first guide layer, the second cladding layer and the second guide layer has a superlattice structure. Still anothr semiconductor light emitting device comprises a defect decomposing layer, a defect blocking layer, a first cladding layer, an active layer, a second cladding layer which are stacked on a semiconductor substrate. The defect decomposing layer and the defect blocking layer comprise a superlattice structure.
摘要:
A semiconductor light emitting device comprises a first cladding layer, an active layer and a second cladding layer which are stacked on a semiconductor substrate. At least a part of the first cladding layer and the second cladding layer has a superlattice structure comprising II-VI compound semiconductor. Another semiconductor light emitting device comprises a first cladding layer, a first guide layer, an active layer, a second guide layer and a second cladding layer which are stacked on semiconductor substrate. At least a part of the first cladding layer, the first guide layer, the second cladding layer and the second guide layer has a superlattice structure. Still another semiconductor light emitting device comprises a defect decomposing layer, a defect blocking layer, first cladding layer, an active layer, a second cladding layer which are stacked on a semiconductor substrate. The defect decomposing layer and the defect blocking layer comprise a superlattice structure.
摘要:
The heat exchanger includes heat exchange units. Each of the heat exchange units includes a plurality of plate fins and a plurality of flat tubes. The plate fins are arranged spaced apart from one another at intervals so as to allow air to flow therebetween. The flat tubes each have an L shape by bending and inserted through the plate fins so that a refrigerant flows therethrough in a direction in which the plate fins are arranged. The heat exchange units are combined to each other so as to form a rectangular shape. Thus, heat exchange can be efficiently performed by increasing the mounting area.
摘要:
A nickel thin film is formed, for example, to a thickness of 2 nm or more on a polyethylene naphthalate substrate by a vacuum evaporation method. A magnetoresistance effect element using ferromagnetic nano-junction is comprised by using two laminates each comprising a nickel thin film formed on a polyethylene naphthalate substrate, and joining these two laminates so that the nickel thin films cross to each other in such a manner that edges of the nickel thin films face each other.
摘要:
A fin and tube heat exchanger including a plurality of parallely arranged heat transfer tubes and a plurality of plate-shaped fins provided orthogonally to the heat transfer tubes, each of the heat transfer tubes being in contact with fin collars of the plate-shaped fins, and being inserted along the fin collars.Each fin collar is configured such that a bend is provided in each of a re-flared portion and in a root portion of the fin collar and a flat intermediate portion is formed between the bends. A thickness of the re-flared portion is smaller than a thickness of the root portion. A radius of the bend of the re-flared portion is larger than a radius of the bend of the root portion, and a ratio of the radius and the thickness of the bend of the re-flared portion is one half or more of a ratio of the radius and the thickness of the bend of the root portion.
摘要:
A cylinder block plate processing apparatus in which one end side of an inner peripheral surface of a cylinder of a cylinder block is sealed to circulate a process liquid to perform pre-plating or plating processing of the cylinder inner peripheral surface. The apparatus includes: an apparatus body having a workpiece mount table on which the cylinder block is placed; a workpiece holding tool that is provided on the workpiece mount table so as to be vertically movable; an electrode support member including an electrode cylinder mounted to the apparatus body; a processing solution supply member that supplies a processing solution to the electrode support member; an electrode operated by the electrode cylinder; a sealing jig provided to one end of the electrode; a driving mechanism that drives the sealing jig; and a control circuit that controls operations of the processing solution supply member and the driving mechanism. The electrode and the sealing jig are inserted from the other end side of the cylinder inner peripheral surface into the cylinder, and the driving mechanism is inserted from an end side of the inner peripheral surface so as to be connectable to the sealing jig.
摘要:
To obtain a heat transfer tube for a heat exchanger or the like which can obtain predetermined heat transfer performance without increasing in-tube pressure loss.High ridges 22A having 10 to 20 rows with a predetermined height and low ridges 22B with a height lower than the high ridges 22A having 2 to 6 rows between the high ridges 22A and the high ridges 22A are provided on an inner face helically with respect to a tube axial direction.
摘要:
A heat exchanger provided with a plurality of plate-like fins 2 arranged in parallel with a predetermined interval and a plurality of flat-shaped heat transfer pipes 3 inserted in a direction orthogonal to said plate-like fins 2 and through which a refrigerant flows, in which said heat transfer pipe 3 has an outside shape with a flat outer face arranged along an air flow direction and a section substantially in an oval shape and first and second refrigerant flow passages 31a, 31b made of two symmetric and substantially D-shaped through holes having a bulkhead 32 between the two passages inside, which is bonded to said plate-like fin 2 by expanding diameters of said first and second refrigerant flow passages 31a, 31b by a pipe-expanding burette ball.
摘要:
In a clean unit which has a dust filter with a blowing power source on the upper surface of a working chamber and which can maintain a clean environment, an external gas flow passage is directly connected or connected through a partition wall, through which dust particles cannot pass but gas molecules can pass, to a feedback gas flow passage for connecting air-tightly a ventilation hole formed in the wall of the working chamber and the inlet of the dust filter to each other. On both sides of the partition wall, the flow velocity vector of a gas flowing in the feedback gas flow passage is made to be equal to the flow velocity vector of the gas flowing in an external gas flow passage.