Abstract: Disclosed is a zero Poisson's ratio structure including a central pillar; at least two branched connectors extending radially from a lower end of the central pillar, wherein each of the branched connectors includes: a first segmental portion extending inclinedly upwardly or downwardly from the central pillar; and a second segmental portion extending inclinedly downwardly or upwardly from a distal point of the first segmental portion, wherein the extension directions of the first and second segmental portions are opposite to each other; and each leg extending perpendicularly downwardly from a distal point of each of the second segmental portions, wherein due to a force pressing the central pillar, each of an angle between the central pillar and the first segmental portion, an angle between the first segmental portion and the second segmental portion, and an angle between the second segmental portion and the leg is variable.

Abstract: The inventive concept provides a substrate treating apparatus. The substrate treating apparatus includes a process chamber provided with a reaction space and having at least one insulation member exposed to the reaction space; a substrate support member for supporting a substate at the reaction space; a gas supply member for selectively supplying a passivation gas or a process gas to the reaction space; a plasma source for exciting the passivation gas or the process gas to a plasma; and a controller for controlling the gas supply member and the plasma source, and wherein the controller controls the gas supply member and the plasma source so the passivation gas is supplied to the reaction space and a supplied passivation gas is excited to the plasma, in a state at which the substrate is not taken into the reaction space.

Abstract: Disclosed is a frequency-selective signal damper including: a viscous polymer exhibiting non-Newtonian fluid behavior; and hydrogel exhibiting sol-gel phase transition. The viscous polymer exhibits shear thinning in a damping region or a noise region, and the hydrogel has a sol phase in the damping region or the noise region. The viscous polymer is gelatin, and the hydrogel is chitosan.

Abstract: Disclosed are an anisotropic mechanical expansion (anisotropic Poisson's ratio) substrate and a crack-based pressure sensor using the same. The substrate having an anisotropic Poisson's ratio includes a first layer having linear concave and convex patterns arranged in parallel to each other on a surface thereof; and a second layer having linear convex and concave patterns respectively engaged with the linear concave and convex patterns of the first layer on a surface thereof, wherein the first layer and the second layer are stacked with each other so that the linear convex and concave patterns of the second layer are respectively engaged with the linear concave and convex patterns of the first layer, wherein an elastic modulus of the first layer is different from an elastic modulus of the second layer.

Abstract: Disclosed is a zero Poisson's ratio structure including a central pillar; at least two branched connectors extending radially from a lower end of the central pillar, wherein each of the branched connectors includes: a first segmental portion extending inclinedly upwardly or downwardly from the central pillar; and a second segmental portion extending inclinedly downwardly or upwardly from a distal point of the first segmental portion, wherein the extension directions of the first and second segmental portions are opposite to each other; and each leg extending perpendicularly downwardly from a distal point of each of the second segmental portions, wherein due to a force pressing the central pillar, each of an angle between the central pillar and the first segmental portion, an angle between the first segmental portion and the second segmental portion, and an angle between the second segmental portion and the leg is variable.

Abstract: The present invention provides a microjet drug injection device equipped with a backflow prevention valve, the microjet drug injection device comprising an upper housing, a lower housing, a partition, and the backflow prevention valve provided with a slit through which a drug passes at a lower end and allowing the drug to move only towards an injection nozzle.

Abstract: A needleless syringe having a multi-nozzle and a manufacturing method therefor are proposed. The needleless syringe injects a drug solution through an injection nozzle by expanding a pressure-generating liquid by means of energy generated from a pressure-generating unit, wherein precise branch channels are stably formed so as to inject drugs into a plurality of parts by using multiple injection nozzles. Further, the present disclosure has advantages in that: one energy-generating unit is used and thus nozzles can be densely arranged with a small distance therebetween; when several injections into an affected part are needed, the treatment time can be shortened using multiple injection nozzles; and an inner chamber is inserted into and coupled to or is insert injection-molded in an outer chamber so that more stable and precise branch channels can be formed, and thus multiple drugs can be stably injected into an affected part through multiple injection nozzles.

Abstract: Disclosed are an anisotropic mechanical expansion (anisotropic Poisson's ratio) substrate and a crack-based pressure sensor using the same. The substrate having an anisotropic Poisson's ratio includes a first layer having linear concave and convex patterns arranged in parallel to each other on a surface thereof; and a second layer having linear convex and concave patterns respectively engaged with the linear concave and convex patterns of the first layer on a surface thereof, wherein the first layer and the second layer are stacked with each other so that the linear convex and concave patterns of the second layer are respectively engaged with the linear concave and convex patterns of the first layer, wherein an elastic modulus of the first layer is different from an elastic modulus of the second layer.

Abstract: A substrate treating apparatus includes a process chamber having a reaction space with one or more insulation members exposed to the reaction space; a substrate support member supporting a substrate at the reaction space; a gas supply member selectively supplying a passivation gas and a process gas to the reaction space; a plasma source exciting a gas into a plasma; and a controller which controls the gas supply member and the plasma source, and after a substrate to be treated is taken into the reaction space and supported by the support member, the controller controls the gas supply member and the plasma source to supply the passivation gas and the process gas to the reaction space simultaneously or sequentially, and generate a plasma in the reaction space under the condition of stopping a supply of the passivation gas but supplying the process gas.

Abstract: A method for performing policy-based storage service federation can include: identifying whether or not a policy is applicable for a request received from a client by a request interceptor; obtaining a policy by evaluating request information relating to the request and a policy status; and obtaining a customized set of storage services based on the policy. The method can provide a framework corresponding to a storage federation layer to allow fast application development.

Abstract: A crack sensor with crack healing is provided. The sensor having: a substrate; a conductive layer disposed on the substrate, wherein the conductive layer contains cracks formed therein; and a polymer layer disposed between the substrate and the conductive layer, or disposed on the conductive layer and not between the substrate and the conductive layer; wherein a restoring force of the polymer layer suppresses further growth of the cracks or restores cracks.

Abstract: The present invention provides a microjet drug injection device equipped with a backflow prevention valve, the microjet drug injection device comprising an upper housing, a lower housing, a compartment, and a backflow prevention valve.

Abstract: A method for performing policy-based storage service federation can include: identifying whether or not a policy is applicable for a request received from a client by a request interceptor; obtaining a policy by evaluating request information relating to the request and a policy status; and obtaining a customized set of storage services based on the policy. The method can provide a framework corresponding to a storage federation layer to allow fast application development.

Abstract: An aspect of the present invention provides an Fe—Ni alloy metal foil having excellent heat resilience, where the Fe—Ni alloy metal foil is prepared by an electroforming (EF) method and has a thickness of 100 ?m or less (except O ?m), wherein the Fe—Ni alloy metal foil comprises, by wt %, Ni: 34-46 %, a remainder of Fe and inevitable impurities, and wherein the Fe—Ni metal foil has a degree of heat resilience in an amount of 30 ppm or less.

Abstract: Provided is a method of preparing trichlorosilane, more particularly, a method of preparing trichlorosilane which trichlorosilane can be obtained with an improved yield using a catalyst-supported silicon.

Abstract: A crack sensor with crack healing is provided. The sensor having: a substrate; a conductive layer disposed on the substrate, wherein the conductive layer contains cracks formed therein; and a polymer layer disposed between the substrate and the conductive layer, or disposed on the conductive layer and not between the substrate and the conductive layer; wherein a restoring force of the polymer layer suppresses further growth of the cracks or restores cracks.

Abstract: The present invention provides a method for manufacturing para-aramid fibers, which includes: spinning a polymeric solution containing aramid polymer in an organic solvent through a spinneret into an inert gas to partially remove the organic solvent contained in the spun fiber; contacting the spun fiber with conditioning solution, so as to maintain residual water in fiber in a range of 10 to 15%; and subjecting the treated fiber to drawing, washing and heating in a dry-spinning manner. The present invention may greatly reduce energy consumption and costs for recovery of the solvent, as compared to a conventional manufacturing method of aramid fiber in a wet-spinning manner. Further, the present invention may solve conventional problems such as corrosion of apparatus, deterioration of working environments, or the like, since a concentrated sulfuric acid solvent is not used in a spinning process.

Abstract: An aspect of the present invention provides an Fe—Ni alloy metal foil having excellent heat resilience, where the Fe—Ni alloy metal foil is prepared by an electroforming (EF) method and has a thickness of 100 ?m or less (except O ?m), wherein the Fe—Ni alloy metal foil comprises, by wt %, Ni: 34-46 %, a remainder of Fe and inevitable impurities, and wherein the Fe—Ni metal foil has a degree of heat resilience in an amount of 30 ppm or less.

Abstract: A high-speed and high-resolution pan-tilt device capable of changing a height comprises a pan unit, a tilt unit, a support bar, and a base frame. The pan unit includes a pan motor and a pan screw for rotating a camera leftward and rightward. The tilt unit includes a tilt motor and a tilt screw for rotating the camera upward and downward, and moves the entirety of the pan unit upward and downward. The support bar has a tip portion and a rear end portion. The camera is mounted on the tip portion, and is capable of being panned and tilted when an angle of the support bar is changed. The base frame supports the pan unit and the tilt unit.