Abstract:
A technique disclosed herein relates to a manufacturing method for a semiconductor substrate having the bonded interface with high bonding strength without forming an oxide layer at the bonded interface also for the substrate having surface that is hardly planarized. The manufacturing method for the semiconductor substrate may include an amorphous layer formation process in which a first amorphous layer is formed by modifying a surface of a support substrate and a second amorphous layer is formed by modifying a surface of a single-crystalline layer of a semiconductor. The manufacturing method may include a contact process in which the first amorphous layer and the second amorphous layer are contacted with each other. The manufacturing method may include a heat treatment process in which the support substrate and single-crystalline layer are heat-treated with the first amorphous layer and the second amorphous layer being in contact with each other.
Abstract:
A fringe image phase distribution analysis technique that performs one-dimensional discrete Fourier transform using temporal intensity information or spatial intensity information to calculate the phase distribution of the fringe image. To improve the analysis accuracy of the phase distribution, a plurality of phase-shifted moiré fringe images is generated from high-dimensional intensity data by a thinning-out (down-sampling) process and an image interpolation process, and the phase distribution of the moiré fringe is calculated by a two-dimensional or three-dimensional discrete Fourier transform. In addition, the phase distribution of thinned-out is added to calculate the phase distribution of an original fringe image. Since high-dimensional intensity information which is present in both spatio-domain and temporal-domain is used, phase distribution analysis is less likely to be affected by random noise or vibration. In addition, even when measurement conditions are poor, it is possible to perform phase distribution analysis with high accuracy.
Abstract:
An objective of the present invention is to provide a method for reducing surface free energy of an organic solvent and of a mixed solution of water and a water-miscible organic solvent, a composition which has a reduced surface free energy of an organic solvent and of a mixed solution of water and a water-miscible organic solvent and which has high environmental suitability and safety to a living body, and a wet wiper and an antiseptic solution which contains the composition The method for reducing surface free energy of an organic solvent or a mixed solvent of water and a water-miscible solvent according to the present invention is characterized in comprising the step of adding surfactin or a salt thereof to the organic solvent or mixed solvent.
Abstract:
An infrared ray absorbing film is selectively formed on a surface of a silicon carbide semiconductor substrate in a predetermined area. An aluminum film and a nickel film are sequentially formed in this order on the silicon carbide semiconductor substrate in an area excluding the predetermined area in which the infrared ray absorbing film is formed. The silicon carbide semiconductor substrate is thereafter heated using a rapid annealing process with a predetermined heating rate to form an electrode. The rapid annealing process converts the nickel film into a silicide and, with the aluminum film, provides an electrode having ohmic contact.
Abstract:
Provided is a method for continuously producing a cyclic carbonate, by which generation of a glycol in a reaction for synthesizing a cyclic carbonate is suppressed, and a cyclic carbonate having a high purity can be efficiently obtained even by simple purification.A method for continuously producing a cyclic carbonate, including filling a catalyst in a fixed-bed tube reactor, and continuously feeding carbon dioxide and an epoxide to the fixed-bed tube reactor to thereby bringing the carbon dioxide and the epoxide into contact with the catalyst, while continuously withdrawing the reaction liquid in the fixed-bed tube reactor, wherein the method includes a pre-treatment step in which a pre-treatment liquid containing a cyclic carbonate is brought into contact with the catalyst before feeding the carbon dioxide and the epoxide to the fixed-bed tube reactor, and the generated glycol is removed out of the system.
Abstract:
Provided are a bismuth-based piezoelectric material whose insulation property is improved while its performance as a piezoelectric body is not impaired and a piezoelectric device using the piezoelectric material. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1): Bix(Fe1-yCoy)O3 (1) where 0.95≦x≦1.25 and 0≦y≦0.30, and a root mean square roughness Rq (nm) of a surface of the piezoelectric material satisfies a relationship of 0
Abstract:
In an embodiment, on an n−type SiC layer on an n+-type SiC semiconductor substrate and a p+ layer selectively formed on the n−type SiC layer, a p base layer is formed on which, a p+ contact layer is selectively formed. From a surface, an n counter layer penetrates the p base layer to the n−type SiC layer. A gate electrode layer is disposed via a gate insulating film, on an exposed surface of the p base layer between the p+ contact layer and the n counter layer; and a source electrode contacts the p+ contact layer and the p base layer. In a back surface, a drain electrode is disposed. A portion of the p+ layers are joined at a region of a drain electrode side of the n counter layer, by a joining unit and a p+ layer contacts a drain electrode side of the p+ layer.
Abstract:
A method for measuring propagation delay characteristics in a multipath propagation environment, wherein the propagation delay characteristics are measured between a transmission means and a reception means provided in the multipath propagation environment, the method comprising a transmission step of transmitting a measurement signal comprising an information signal having a predetermined frequency from the transmission means; a reception step of receiving the measurement signal that has traveled along a plurality of propagation paths by the reception means; a calculation step of performing Hilbert transform on the received information signal to calculate instantaneous frequency characteristics from a resulting Hilbert transform signal; and an output step of outputting propagation delay characteristics corresponding to the frequency of the information signal based on the instantaneous frequency characteristics.
Abstract:
A white light-emitting device of the present invention includes a substrate (101); a diamond semiconductor layer (105) provided on the substrate (101), in which one or a plurality of p-type α layers (102), a p-type or n-type γ layer (103), and one or a plurality of n-type β layers (104) are laminated in this order from the substrate (101); a first electrode (106) provided on the α layer (102) which injects an electric current; a second electrode (107) provided on the β layer (104) which injects an electric current; and a fluorescent member (108) which coats a light emission extraction region of the surface of the diamond semiconductor layer.
Abstract:
On a silicon carbide semiconductor substrate, heat treatment is performed after one layer or two or more layers of an oxide film, a nitride film, or an oxynitride film are formed as a gate insulating film. The heat treatment after the gate insulating film is formed is performed for a given period in an atmosphere that includes H2 and H2O without including O2. As a result, hydrogen or hydroxyl groups can be segregated in a limited region that includes the interface of the silicon carbide substrate and the gate insulating film. The width of the region to which the hydrogen or hydroxyl groups is segregated is from 0.5 nm to 10 nm. In such a manner, the interface state density can be lowered and high channel mobility can be realized.