Tohoku Techno Arch Co., Ltd. List of Products and Services

Lithium-ion battery is used in laptop and digital camera because of its light weight and high capacity. The cathode material is said to be one of the most expensive material used in lithium-ion battery. LiCoO2 is commonly used as cathode material, which is not only expensive but also a rare metal with few reserve, and there is concern about its stable supply. Therefore, the development of new electrode material that is low cost and that can be stably supplied from a resource is actively pursued.　 　This invention is about a new cathode material that is low cost and that can be stably supplied from a resource. The organic active material doesn't contain Ni or Co. Nevertheless the capacity of the new cathode material is over 180 (mAh/g), which is equal to or higher than that of the conventional cathode material. Moreover, this material has the property of being resistant to deterioration due to charging and discharging.

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Magnetic field sensors are used in a variety of applications such as contactless current detection and electronic compasses, etc. Because an ordinary magnetic element detects only magnetic field components in a specific direction, detecting the direction of a magnetic field vector in 3D space requires a 3D combination of elements corresponding to each direction. This is an issue to device miniaturization and integration, which are rapidly increasing in demand in the IoT field.　 　This technology relates to the invention of a planar magnetic field sensor that does not require a 3D structure. The direction of the magnetic field vector in 3D space is determined from the voltage generated in each part of the ferromagnetic Fe-Sn thin films[1]. A 3D magnetic field sensor can be fabricated by patterning a single magneto-sensitive layer by a general-purpose device processing method. In addition to magnetic field sensors, this thin film can be expected to create new applications by combining functions[2-5].

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The efficient use of thermal energy has become important to realize a sustainable energy recycling society. So, there is a demand for the development of thermoelectric materials.　 　This technology relates to novel thermoelectric materials using the anomalous Nernst effect. Conventional thermoelectric transducers employ complex three-dimensional structures to achieve high thermoelectric power. On the other hand, the anomalous Nernst effect makes it possible to design a variety of thermoelectric devices. Therefore, we investigated the anomalous Nernst effect of a versatile amorphous alloy thin film made mainly of Fe and Sn, which are inexpensive and have excellent environmental harmony, and found that it has the largest class of performance at room temperature.

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In recent years, the development of rechargeable battery using organic material has been promoted due to environmental impact and safety. For such device, activated carbon and hard carbon having a large specific surface area and high conductivity, are used as electrode material. However, activated carbon has a relatively low conductivity although its large specific surface area. Moreover, since it is manufactured using petroleum coke, it has an important environmental impact. In addition, hard carbon is manufactured only from specific tree species, making it expensive to obtain.　 　This invention is able to provide a conductive material that can reduce manufacturing cost, a porous material having a good balance between large specific surface area and high conductivity, and their manufacturing method, as well as an electrode material and an electrical storage device using these conductive material or porous material. The conductive material consists of hard carbon derived from charcoal. The raw material can be made from easily available tree species, thus reducing production cost. Like hard carbon, this invention has graphite-structured nanodomain, so it has a large specific surface area and high electrical conductivity.

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So far, crystalline carbon material with relatively large crystallite size and relatively small average interplanar spacing has been used as anode material for lithium-ion secondary battery and catalyst material for cathode in fuel cell. This highly crystalline carbon material is made from raw materials such as hyper-eutectoid molten pig iron, natural graphite and kish graphite. However, these raw materials are depletable resources and could be depleted in the future.　 　This invention is able to provide a highly crystalline carbon production method, its precursor production method and the precursor itself, using sustainable resources as raw material. This invention has a precursor production process in which at least one of iron, nickel or cobalt is impregnated into the raw material containing biomass which is a sustainable resource, followed by heat treatment to obtain a precursor, and a carbonization process in which the precursor is carbonized by heating and then washed by acid. This invention allows the production of highly crystalline carbon and its precursor.

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The rotary heat exchanger has a structure in which a fixed blade is in sliding contact with a rotary cylinder. Therefore, the temperature boundary layer (boundary film) of the heat transfer surface on the rotary cylinder is removed, and the fluid inside and outside the rotary cylinder can continuously exchange heat with high efficiency. In addition, even in the system where the solidification layer such as the scale is likely to occur (Hot spring water, polluted water, etc.), the solidification layer is always removed, and stable operation can be realized. In the conventional rotary heat exchanger, since only one side in the axial direction of the rotary cylinder is supported, there is a problem that the gap between the rotary cylinder and the fixed blade is likely to occur due to the run-out of the rotary cylinder, and the boundary film and solid phase are likely to remain. In addition, a rotary heat exchanger with both sides support has been devised, but the difficulty is that the rotating mechanism is immersed in the fluid, so it is unsuitable for the system with solid phase formation. In response to the above problems, the inventors have developed a mechanism (* (2)) in which the rotating mechanism on both sides touches only the clean fluid, and have created an invention that contributes to the practical application of the rotary heat exchanger such as a combination (* (1)) with a latent heat storage material.

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With the increasing demand for highly efficient energy sources and the development of aerospace technologies, materials used in these fields must be able to withstand harsh environments. Among the materials expected in the aerospace field, TiB₂ is used as a heat-resistant and wear-resistant material because of its high melting point and strength, as well as its high electrical conductivity, etc. However, TiB₂ is a hard-sintering material that requires high temperature and pressure for sintering, which limits its domain of usage. 　The sintering technology of this invention has an effect similar to the original properties of transition metal boride even with the addition of auxiliary agents. This result expands the possibilities of using transition metal diborides as structural components, which have been limited to powder and thin film applications due to their difficult sintering properties.

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Since a flexible and soft magnetostrictive material does not exist,a soft magnetostrictive composite has been developed by mixing magnetostrictive material with resin. Wire and thin sheet from iron-based magnetostrictive alloy have also been developed as filler embedded in the matrix. However, although these magnetostrictive composite materials are soft, strong processing causes modification in the internal crystal orientation and generates internal defect, resulting in a significant reduction in magnetostrictive properties. In addition, since the filler material consisting of magnetostrictive material of predetermined dimension is embedded into the matrix, the composite material becomes a bit hard. 　This invention is able to provide a magnetostrictive composite material which is relatively soft with excellent magnetostrictive properties, and its manufacturing method. This invention consists of an iron based magnetostrictive alloy which is characterized by a large number of wire shape having a predetermined range of diameter and length dispersed in a resin matrix which has excellent flexibility and softness. It also has an excellent magnetostrictive properties since the strong processing has only a limited impact on magnetostrictive properties modification.

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Development of thermoelectric materials and modules are promoted to effect ively ut ilize unused thermal energy. Thermoelectric materials with nanoparticles have been developed to improve the figure of merit by lowering the thermal conductivity using phonon scattering. However, it is limited to a material in which nanoparticles can be formed, and the dispersion of nanoparticles requires a search for precise conditions and a complicated process. It is an object of the present invention to provide a thermoelectric material and a thermoelectric module having an improved figure of merit, which do not require a process for producing a raw material of nanoparticles, can reduce thermal conductivity by scattering of phonons, can improve electrical conductivity and Seebeck coefficient by quantum confinement effect, and can be expected to be put into practical use.

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Materials containing nanocellulose are known to have higher strength than the base material. However, the nanocellulose properties vary depending on the degree of its aggregation. The light scattering is known as a method to estimate the aggregation. However, when the scattered light from the molecular chain is weak, as in the case of materials containing nanocellulose, it is not possible to estimate the aggregation with high accuracy from this method.　 　This invention is able to provide a device and method that estimates the aggregation with high accuracy, and its material manufacturing method. This invention can estimate the aggregation for not only nanocellulose but also multiple molecular chains with structures containing water molecules. This invention is based on the feature that there is a strong correlation between the aggregation and the electromagnetic wave propagation property in order to have high accuracy estimation.

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　Although the development of erythropoietin (Epo) -related drugs requires the existence of animal models for disease states such as renal anemia, Epo knockout mice are not suitable as a model because of the embryonic lethality and the large inter-experiment/inter-individual differences in the anemia state in the models produced by surgery/drug treatment. The present invention relates to transgenic mice (I-SAM) that have overcome these problems.　 　In I-SAM, the endogenous Epo gene is homologically knocked out by insertion of the GFP gene, and a region from 3.3kbp upstream to 4.5kbp downstream of the Epo gene transcription start point (Transgene) is introduced. In I-SAM before birth, transgene-derived Epo is expressed in the liver, etc., and there is no embryonic lethality. After birth, transgene does not express Epo because it has no transcriptional activity in the major Epo-producing tissues, such as the kidney, and there is anemia. 　 I-SAM has the following characteristics. ・Epo knockout but not embryonic lethality ・Stably develop high levels of anemia after birth ・Have normal renal function ・Have tissue Epo-producing cells labeled with GFP ・Have a long lifespan and can reproduce by mating

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In cryptocurrencies such as Bitcoin, the user's offline privacy, which is linked to user ID (public-key), may be leaked by the frequent trading, because all transactions are fully disclosed on the blockchain. This invention provides a new technology for secretly exchanging depleted user IDs whose anonymity has declined with fresh ones through collaboration among other users (support users). Compared with current technologies, it has a resistance to the support users betray without any special changing of the blockchain mechanism. Amazingly, not only user's anonymity can be ensured, but also the transparency and versatility of services including the blockchain will be retained.

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In 3D imaging, it is important to effectively encode z information, which is the image formation displacement of the target object, into XY information, which is displacement from the optical axis of the image surface. On the other hand, in single-pixel imaging using only a single detector, it is important to encode in efficient manner the XY information of the target into the time information. However, the conventional encoding method has a limit on distance resolution, imaging distance range, z information decoding accuracy and encryption uniqueness. This invention provides a new and improved hologram optical element, its manufacturing method and an optical device able to mutually convert Z & XY information with simple configuration. This invention is able to realize high accuracy and high spatial resolution for high-speed 3D imaging (patent US10816474) by converting the object depth direction information of the optical detection system into the planar direction information at the detecting surface.

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Inverse-Electron-Demand Diels–Alder Reaction(IEDDA), a cyclization reaction between tetrazine and dienophile, is used in various fields from materials science to biological applications due to its fast reactivity and high selectivity. If this reactivity can be controlled, the application range is expected to expand dramatically. A method for controlling the reaction by oxidizing dihydrotetrazine to tetrazine, which is less reactive, has been reported, but there are problems such as the effect of natural oxidation and the inability to respond to stimuli other than oxidation.　 　The inventors found that the IEDDA reaction can be completely suppressed by derivatizing tetrazine to a macrocyclic structure, and that the reaction proceeds rapidly when the reaction is converted from a cyclic to an acyclic structure by stimulation. The stimuli in the present invention can be selected according to the application, such as light, heat, pH, enzymatic reaction, redox, etc. By using the present invention, it is expected to be applied to the in vivo synthesis of active pharmaceuticals, environmentally responsive drug delivery systems, chemical sensors, nuclear medicine diagnostics, etc.

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In order to commercialize various ceramic electrochemical devices such as fuel cells, hydrogen production cells, hydrogen sensors, ammonia synthesis cells, etc., research and development of proton-conducting oxides has been actively carried out. However, high proton conductivity has been achieved only for oxides in a few type of crystal structures. This makes difficult to develop practical proton-conducting ceramics having mixed conductivity, chemical stability, and sinterability. 　The present invention is an ion-exchange technique using a high-temperature acidic liquid. This technique enables easy conversion from a wide variety of aprotic oxides to oxides containing proton at a high level.

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Co-based alloy has excellent corrosion and wear resistance, and it is widely used for biomaterial and casting mold material. However, it could not be used for industrial product requiring mechanical strength because the strength is lower than an iron-based material. Although the addition of nitrogen or carbon is known to increase the strength of Co-based alloy, it is not sufficient to use as an industrial product. The lamination shaping method using Co-based alloy powder as raw material is also known to product a body with complex shape having excellent corrosion and wear resistance, but the product fabricated by this method has still not enough strength to use as an industrial product. 　This invention is able to provide a Co-based alloy powder for electron beam lamination shaping with extremely high hardness & toughness which is comparable to that of a steel material, while keeping the corrosion and wear resistance of Co-based alloy. The Cobased alloy powder of this invention has a particle size of 1 to 200 mm. This invention enables the production of industrial product made by lamination shaping with high hardness & toughness while keeping the corrosion and wear resistance of Co-based alloy.

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Lithium-ion battery (LIB) makes part of our live through a wide range of applications such as smartphone, mobile battery, laptop PC, car, etc. In this context, there are constant requests for performance improvement, such as operation at higher voltage. It is known that operation at high voltage results in a decrease in battery capacity and in cycle retention rate due to side reaction between the electrolyte and the positive-electrode active material. 　This invention overcomes the conventional issues by coating the positive-electrode active material with a layer. This coating layer reduces side reactions, which results in more stable operation at high voltage than conventional technology. 　This invention can improve for example the charge/discharge cycle characteristic of high-potential spinel oxide positive electrode, which is a LIB positive electrode material that does not use cobalt metal having a supply chain risk. Therefore, it can create high energy density storage battery which is low cost & risk-free metal resources.

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Ultra-high molecular weight polyethylene (UHMWPE) is a material with excellent impact resistance, wear resistance, etc. However, due to poor flowability at high temperature, the injection molding, which is a common molding method for polymer, was not simple to use. 　Therefore, ceramic nanoparticles (alumina, etc.) were mixed to UHMWPE, then deposited by the cold spray technique. This method has succeeded to form a thick film easily. It is expected that other polymers can be deposited in the same way by mixing ceramic nanoparticles.

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This invention overcomes the corrosion resistance decrease with a unique alloy design, which has been an issue for high-hardness alloys with dispersed carbides, and provides an Fe-based alloy with an excellent balance between hardness and corrosion resistance. The alloy of this invention can be manufactured using ordinary melting and processing equipment, and can reduce material cost by replacing existing powdered metallurgy materials. It is expected to have a wide range of applications such as a component of a screw, etc. used in the molding of super engineering plastics like a PPS resin or such as a mold material used in corrosive environments.

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Energy harvesting devices that can convert mechanical energy such as heat, wind, and vibration etc. into electrical energy are attracting attention. Piezoelectric material is one of the materials for energy harvesting. It is sensitive to small strains and can be expected to have high power density and voltage. In addition, because it can be made compact, it is the optimum solution as a power supply source of various sizes. The invention is a flexible piezoelectric material formed by mixing piezoelectric polymer and piezoelectric ceramics. Conventionally, piezoelectric ceramics are affected by fatigue cracks when repeatedly subjected to a load, so that it is difficult to secure flexibility by itself. The invention does not require any countermeasures and has an advantage that the applicable range can be expanded.

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　A battery using stomach acid as electrolyte solution has been developed in the recent years. However, the conventional stomach acid battery generates hydrogen at electrolyzation since the standard electrode potential of the anode material, such as zinc, is lower than the standard hydrogen electrode potential. Moreover, the generated hydrogen adsorbs on the anode surface and reduces the battery efficiency such as electric potential or capacity in a short time. 　This invention can provide a battery and anode able to generate electricity stably for a long time by limiting the hydrogen generation. The anode of this invention contains a conductive polymer, and an anode powder made of metal, alloy or compound in which the standard electrode potential is less important than the standard hydrogen electrode potential. The conventional anode forms hydrogen radicals after electrode reaction but the conductive polymer located around this invention’s anode absorbs the hydrogen radicals and limits hydrogen generation.

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Since the discovery of a copper oxide superconductor, the hightemperature (HT) oxide superconducting tape wire that can be used for cables has been developed. Currently, a joining method that can minimize the degradation of superconducting property is required to obtain stable low resistance. However, in the case of solder joint, superconducting property degradation and joining resistance variation have been a problem due to the need of temperature adjustment to ensure wettability and pressure. It was also difficult to produce long, stable-quality HT oxide superconducting tape wire of more than several kilometers. 　This invention is able to provide a method of joining HT oxide superconducting tape wires that enables joining homogeneous or dissimilar tape wires that can suppress superconducting property degradation. This invention is characterized by the ultrasonic joining of overlapping portions of two tape wires through indium at room temperature and in an atmospheric environment.

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Many cancers spread to regional lymph nodes through the lymphatic vessels. Intravenous administration of chemotherapeutic agents through blood vessels is a common treatment for metastatic lymph nodes. Drugs administered intravenously leak from the capillaries into the interstitium in peripheral tissues and are reabsorbed by the blood vessels and lymphatic vessels. However, the lymphatic system is characterized by the preferential uptake of large-sized particles and polymers, and thus anticancer drugs, which are generally small molecules, are considered difficult to deliver to the lymphatic system. 　A modern drug delivery system by lymphatic vessels can deliver drugs to a target lymph nodes directly. In this way, not only these lymph nodes, but also the downstream lymphatic system can be treated properly. 　This invention shows that a liquid preparation having a particular osmotic pressure range provided high drug retention in the target lymph node, high delivery to the downstream lymph node, and excellent drug efficacy. The investigation for diseases other than cancers is being researched with data unpublished.

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Electron spectroscopy is a method to study the electronic structure of matter by measuring the energy distribution of emitted electrons due to ionization caused by irradiation of energy ray such as a photon and an electron beam. Various types of electron spectrometers, such as time-of-flight and electrostatic analyzers, have been developed, depending on the electron energy range to be covered. Nevertheless, one may desire to have a next-generation spectrometer. 　This technology is based on a completely new principle, which enables one to have an ultra-high energy resolution that has never been achieved. Its application is very wide, since it can be employed for any energy electrons while providing high sensitivity and the ability to measure the angular distribution.

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A phase-change material, which has a high crystallization temperature and is superior in thermal stability of the amorphous phase, which has a composition of the general chemical formula GexMyTe100-x-y wherein M indicates one type of element which is selected from the group which comprises Al, Si, Cu, In, and Sn, x is 5.0 to 50.0 (at %) and y is 4.0 to 45.0 (at %) in range, and x and y are selected so that 40 (at %)≦x+y≦60 (at %). This phase-change material further contains, as an additional element L, at least one type of element L which is selected from the group which comprises N, O, Al, Si, P, Cu, In, and Sn in the form of GexMyLzTe100-x-y-z wherein z is selected so that 40 (at %)≦x+y+z≦60 (at %).

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The invention is possible to create network among mobile devices autonomously and send/receive messages. Typically, it is too difficult to create network among mobile devices and negotiation/keep stable communication link. 　However, this invention is possible to negotiation/keep stable link and execute multihop communication by combination Delay Tolerant Network(DTN) like Mobile Ad-hoc Network(MANET) and wireless LAN. In inventor’s research, it was successful to communicate among smartphones directly and execute multihop communication. The communication method of this invention is possible to use other wireless communication instead of wireless LAN.

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　Recently, drones (or UAVs) have been used as a platform for three-dimensional measurement using Structure from Motion(SfM). By using machine learning on the obtained image data, quantitative evaluation and grasping of topography and vegetation information have been attempted, but conventional methods have problems in simplicity and accuracy improvement.　 　Therefore, the present invention provides a method for producing a composite image of the ground surface by which the utilization status of the ground surface such as vegetation can be easily grasped using height information obtained by using a drone. 　The composite image is highly versatile because it can be obtained as a three-channel RGB image. Moreover, it can be processed by any free software you want to use and the installation is not difficult. 　In terms of machine learning accuracy, the Sørensen–Dice coefficient for the comparison example in which the homestead woodlands was extracted using only ortho images was 0.64, while the Dice coefficient for the synthetic images was 0.80, showing an improvement in accuracy.

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Recently, cellulose nanofiber (CNF) has attracted attention as a new material. Although it is expected to be used as a filler to improve mechanical strength by dispersing CNF into a base material such as resin, it is still a problem because of insufficient orientation and dispersability in the base material. 　 　The present invention has been made in view of such problems. Focusing on silk fibers as a base material, we have succeeded in providing a technique for obtaining silkworm silk obtained by uniformly dispersing CNF.

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　Filamentous fungi (e.g. Aspergillus oryzae) are well-used for production of useful proteins and small molecules in industry. However, it is well-known that hyphal aggregation during the liquid cultivation often prevents from growing with high density, resulting in low productivity. This invention discloses a mutant fungus, in which α-1,3-glucan synthase (AGS) genes plus the genes on galactosaminogalactan (GAG) cluster are deficient.　 　AGS deficient fungi (AGΔ) showed a highly dispersed property [1]. By inducing further deficiency in genes on GAG cluster, the mutant (AGΔ-GAGΔ) shows a fully dispersed state in liquid culture. Further, this phenotype contributes to well aerobic conditions during cultivation, resulting in increasing growth of cells and substance production thereby.

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Introduction 　Influenza prevails broadly every season. Current diagnostic drugs can not be performed until the virus increases quite a lot (ca. 12~24h after infection, symptoms may appear), and if not so, both sensitivity and accuracy of the test will be doubtful. To prevent on-going severe symptoms, new diagnostic tech for influenza at earlier stage becomes so demanded. This invention provides a conjugate of peptide nucleic acid sequence (PNA) and a small molecule, targeting the commonly identical RNA hairpin promoter region of eight kinds of influenza A virus. Effect & Application 　The conjugate (tFIT-DPQ probe) is composed of two parts: tFIT unit for recognition of virus RNA’s nucleotides and DPQ* unit for UAA internal loop binding. In tFIT unit, a fluorescent ligand is inserted so as to be capable to emit signals when intercalating to RNA duplex (Fig. 1). The conjugate shows an over 1000 times greater binding affinity than DPQ molecule only (Fig. 2). By simply mixing the virus RNA contained sample and the conjugate together, test result will be obtained within a short time (ca. 2~3 min) and 1nM virus RNA (ca. 1010 copies) can be detected. Moreover, the virus inhibition effect by the conjugate in micromolar range was confirmed (Fig. 3). 　tFIT-DPQ probe is expected to be applied as diagnostic and inhibitory drugs, as well as a screening tool for influenza drug candidates.

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　We have developed a technology to deposit solid-state ionic films used in solid oxide secondary batteries at room temperature by electroplating. This technology makes it possible to integrate small solid-state ionic batteries, which has been difficult until now. Some oxide solid-state ionic batteries are fabricated by powder sintering or sputtering, but they require a high temperature process, so the separation by thermal stress is a problem. The present invention provides a technique for depositing a solid ionic film (Cathode electrode and solid electrolyte films) by electroplating without requiring a high temperature process. 　The films of the cathode active materials and solid electrolytes were successfully deposited and patterned by electroplating at room temperature. In addition, an ionic solid-state battery was fabricated using this technology, and its operation was confirmed (right figure).

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One of the carbon dioxide reduction technologies is an electrochemical method. This method has the advantage that the reaction occurs at room temperature and pressure and does not require a hydrogen gas supply, but has not been put to practical use due to its low reaction efficiency. The present invention relates to a gas reduction device which can increase reaction efficiency more than the conventional one by using micro reaction space with a nano-catalytic cathode and a gas-liquid mixture flow in a microchannel.　 The gas reduction microreactor was fabricated and its ability to reduce carbon dioxide to methane was measured (right panel). It was demonstrated that highly efficient gas reduction is possible using the microspace and nano-catalytic cathode.

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　When mass-producing products containing metamaterials, a new method for sorting out good or bad metamaterials is desired because the current conventional technology can not provide an efficient and low-cost detection methods for its large areas. 　The present invention provides an evaluation method for checking the quality of metamaterials that is less expensive than conventional techniques and reduces the time required for evaluation, thus ultimately reducing costs. Features・Outstandings

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・Metal/insulator/metal tunnel diodes (MIM tunnel diodes) are used when rectifying signals of frequencies in the infrared and terahertz regions. ・ However, it is difficult to improve the rectification performance because there is a trade-off between electrical resistance and asymmetry. ・ The invention has solved the above issue by introducing metallic nanoparticle layers (NPs) into the MIM tunnel diodes and changing the tunnel barrier at forward and backward biases by the effect of electric field concentration. ・ Since the invention has greatly improved rectifying performance compared to tunnel diodes without NPs,the present tunnel diodes can be expected to be used to high-frequency devices (Optical rectenna, IR, THz detector).

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・ Recently, ToF sensors that can measure the distance from an object are attracting attention in various fields such as automobiles, robots, and sensor. ・ However, conventional ToF sensors have a issue that it is difficult to improve both characteristics because there is a trade-off between frame rate and depth noise. ・ Therefore, this work has successfully solved the above issue by with in-pixel analog memory array for each image sensor and sub-frame integration. ・ This work achieved up to 10kfps at HS mode and depth noise is less than 1.3% at HP mode(0.4-4.2 m). ・ This work shows higher characteristics than conventional ToF sensors, and therefore, it is expected to be applied to autonomous driving sensors, autonomous running robots, factory automation (FA), drones, VR/AR, etc.

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MoS2 is attracting attention as the material for next-generation nanodevices with low power consumption and new functionality. Current fabrication methods include intercalation, which is a method of inserting ions to widen the interlayer distance and exfoliate, and chemical vapor deposition (CVD), which is a method of depositing a film on the surface of a substrate by supplying a source gas containing thin film components, but the former is of low quality and the latter is expensive and less productive.　 　This invention relates to a method for producing novel layered nanosheets of high quality, such as low cost, low interlayer residue and high orientation, which solve the above problems. Examples of producing layered nanosheets are MoS2 and graphite, but other layered nanosheets can also be produced.

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In recent years, interest in preventing sunburn and stain has been growing in the health care field. If ultraviolet ray can be easily measured using smartphone, etc., it is expected to contribute to health management and cosmetic medicine. In addition, the number of device that handle ultraviolet ray is increasing in the industrial field, so the need for measuring and sensing ultraviolet ray is growing.　 　This invention is able to measure from UV-A, which causes stain and wrinkles, to UV-B, which causes sunburn, by using silicon semiconductor. So far, silicon photodiode (PD) technology with high sensitivity in wide optical wavelength range of 190-1100 nm and high light resistance that does not deteriorate even after long term exposure to intense ultraviolet light has been developed. Moreover, a technology that selectively and efficiently detects optical signal in the UV region even in environment with background light including visible light and near-infrared light, has been achieved by applying this silicon PD technology to a new differential type detection method. *Theoretically feasible for also UV-C (consultation required)

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γ-Gallium oxide (γ-Ga2O3) is one of the metastable structures of gallium oxide and has excellent catalytic properties. However, it was difficult to be synthesized. In the conventional method for producing γ-Ga2O3, gallium nitrate hydrate was dissolved in distilled water with urea and baked at 500ºC. However, this method required a facility for high-temperature treatment and had a problem of increasing production costs such as equipment costs.　 　The present invention makes it possible to provide a method for producing gallium oxide at a low temperature and a simple process, thereby reducing production costs. 　It is characterized in that a raw material solution containing liquid gallium and a reducing agent is irradiated with ultrasonic waves. Thus, particles of gallium can be refined, and particles having crystals of γ-Ga2O3 can be formed on the surface thereof. As a result, the baking process and the complicated separation and cleaning process are not required, the manufacturing cost is reduced, and γ-Ga2O3 can be produced by a simple process at a low temperature.

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Conventional nitride coating methods include CVD (chemical vapor deposition) and PVD (physical vapor deposition). However, there is a problem that the manufacturing process is complicated and the work is not efficient because pressure adjustment and atmosphere replacement by vacuum equipment are required. Therefore, the nitride coating in the atmospheric pressure has been developed, but there is a problem that the surface is uneven. The present invention shows follow features, and it can solve above problems. ・ TiN(Nitride coating) is formed by microwave process. ・ Vacuum process is not needed. ・ Nitride coating is formed more uniformly.

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As an alternative to ITO widely used as a transparent conductive material, Ag nanowires have attracted attention because of their high flexibility, optical transparency, conductivity, and durability.　 　As a conventional manufacturing method of Ag nanowires, a method using a protective agent such as a polyol method is typical. 　However, in order to remove the protective agent which is an additive, there are problems such as manufacturing process, increase in manufacturing cost, and waste treatment. On the other hand, the present invention can suppress the extra manufacturing cost because no additive is used, and it is possible to fabricate Ag nanowires with large aspect ratio with good yield and low cost.

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Ceramics – carbon composite having multi-function is developed in the recent years. However, the composite is heated at high temperature for a long time during the manufacturing process so the particles are sintering between them and the Li4Ti5O12 nano particles able to generate high power cannot be obtained. Moreover, the synthesis method is complex and uses expensive raw materials so the manufacturing cost is high. 　This invention can provide oxide ceramics – carbon composite and its manufacturing process with reduced cost. This invention manufacturing process is to mix raw material of oxide ceramics made by LiO2 and TiO2 with carbon and fire with microwave in order to create Li4Ti5O12 carbon composite. As result, Li4Ti5O12 crystalline particle which is an oxide ceramics having particle diameter lower than 250nm; and oxide ceramics – carbon composite having above mentionned carbon bond on the crystal plane (111) and (200) of the oxide ceramics – carbon composite were obtained.

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Current platinum (Pt) materials and alloys of Pt and other precious metals (Ni, Co, Pd, etc.) are used as fuel cell electrocatalysts. However, current materials are expensive. On the other hand, the activity efficiency of alloy made of Pt and inexpensive materials (such as carbon) was not enough for electrocatalysis.　 The present invention focuses on alloy made of silicon (Si) and Pt by dry process. It can be solved above problems because Si　has abundant reserves. Furthermore, the developed alloy nanoparticles of Pt and Si shows 2.5 times more catalytic activity than commercially available Pt/C catalysts, and therefore it is expected to be alternative materials for fuel cell electrocatalysts.

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In recent years, spintronics, which make active use of the small magnetic property (spin) of electrons, has attracted attention from the viewpoint of realizing devices with low power consumption and high density. Many of the spintronics functions are driven by a spin flow. So the pioneering of innovative generation and control methods of spin flow has been required.　 　The present invention is a new development of magnetic metamaterials with artificially manipulated symmetry in nano space, and pioneered a new principle that completely controls the propagation direction and magnitude of spin flow at room temperature and at ultra-high speed by the polarization state of light pulses. 　The present invention is expected not only to dramatically improve the degree of freedom in designing next-generation spintronics devices, but also to be applied to ultrafast optical spintronics, in which conventional optical science and spintronics technologies are developed through nanotechnology.

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To realize a low-carbon society, alkaline water electrolysis equipment, which uses renewable energy to electrolyze water and produce hydrogen, is attracting attention. However, the nickel (Ni) electrode used for the anode of conventional alkaline water electrolysis equipment degrade under fluctuating electric power derived from renewable energy. In addition, stainless steel which is one of the alternative anode material for Ni have the problem that chromium elute into the alkaline electrolyte and generate toxic hexavalent Cr during the electrolysis.　 　In the invention, in order to solve the above problems, a certain ingenuity has been applied to solve the conventional problem of electrode performance degradation, and the dissolution amount of Cr has been successfully suppressed.

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The Fan-out Wafer Level Package (FOWLP) method, which is the mainstream method for semiconductor packages, especially for mobile applications, has a problem of "die shift" in which mounted components shift by flow of sealing resin and wiring defects occurred. Further, even in a device such as a flexible display, there is a problem that a mounted component on the device is shifted when the device is bent.　 　In order to solve the above problems, the invention is a method of manufacturing a semiconductor package without die shift by incorporating a special anchor layer under a mounting component and adopting a special manufacturing process, and the semiconductor package. 　The invention is expected to produce a highly integrated semiconductor package without a die shift, and to be applied to a flexible display and a wearable device.

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