Abstract: A positive electrode active material for a sodium ion battery, which has excellent cycle stability and durability against humidity, and a sodium ion battery containing the same are described. The positive electrode active material for a sodium ion battery includes core particles having a composition of Formula 1 below, and a shell composed of chromium oxide formed on a surface of the core particles. Na(Cr1-2xAl2x)O2 (x is 0.001 to 0.

Abstract: The invention relates to a solid electrolyte composition and a method for producing the same. The solid electrolyte composition according to the invention is characterized by including a material represented by [Formula 1] below. NaaZnbGacSd??Formula 1 (wherein, 2.70?a?2.90, 0.70?b?0.90, and 1.10?c?1.

Abstract: The present invention relates to a solid electrolyte composition and a method for preparing the same. A solid electrolyte composition according to the present invention is characterized by including a material represented by [Formula 1] below. NaaWbSicSbdSeBrf??[Equation 1] (Here, 2.80?a?2.89, 0.20?b?0.24, 0.08?c?0.12, 0.66?d?0.70, 3.91?e?4, and 0?f?0.09.

Abstract: A method of identifying and analyzing materials includes selecting at least two elements, collecting data of a plurality of compounds analyzed to be producible by the at least two elements, preparing image or spectrum-type analysis data for each of the plurality of collected compounds, selecting binary or higher-order compounds from among the plurality of compounds to mix the selected compounds at a predetermined mixing ratio, and generating training data including resultant data obtained by combining and processing the image or spectrum-type analysis data according to the predetermined mixing ratio, performing machine learning using the training data, and identifying and/or analyzing image or spectrum-type analysis data obtained from an actual material, using a model obtained through the machine learning.

Abstract: The present invention relates to a sulfide phosphor including a parent body containing one or more selected from Ba, Li, and S, and Al and Ga as constituent elements, wherein one or more activators selected from Eu and Ce are employed to the parent body.

Abstract: The present invention relates to a positive electrode active material for a potassium secondary battery, the positive electrode active material according to the present invention is a crystalline material comprising: K; a transition metal; P; and O, and comprises, as a main image, an image indicating a diffraction peak having a relative intensity of 5% or more in a range of Bragg angles (2?) of a X-ray diffraction pattern of 14.7° to 15.7°, 22.1° to 23.1°, 25.5° to 26.5°, and 29.7° to 30.8°, when the relative intensity of the diffraction peak having the highest intensity is taken as 100% in the powder X-ray diffraction pattern of the material.

Abstract: The invention relates to a red phosphor with a narrow full width at half maximum, having improved decay time and resolving afterglow phenomenon. The fluoride-based phosphor according to the invention is characterized in including a host having a composition of the following [Formula 1] including rubidium (Rb), cesium (Cs), silicon (Si) and fluorine (F) as constituent elements, and manganese (Mn) which is solid solution treated in the host as an activator: Rb3-xCsxSiF7??[Formula 1] (where, 0<x<3).

Abstract: The present invention relates to a metal fluoride red phosphor and an application of the phosphor as a light emitting element, the metal fluoride red phosphor having a tetragonal crystal structure of a novel composition, and emitting light in the red color wavelength by being excited by ultraviolet rays or a blue excitation source, thereby being usefully applicable to a light emitting element such as a light emitting diode, a laser diode, a surface emitting laser diode, an inorganic electroluminescence element, and an organic electroluminescence element.

Abstract: The present invention relates to a positive electrode active material for a potassium secondary battery, the positive electrode active material according to the present invention is a crystalline material comprising: K; a transition metal; P; and O, and comprises, as a main image, an image indicating a diffraction peak having a relative intensity of 5% or more in a range of Bragg angles (2?) of a X-ray diffraction pattern of 14.7° to 15.7°, 22.1° to 23.1°, 25.5° to 26.5°, and 29.7° to 30.8°, when the relative intensity of the diffraction peak having the highest intensity is taken as 100% in the powder X-ray diffraction pattern of the material.

Abstract: A method of identifying and analyzing materials includes selecting at least two elements, collecting data of a plurality of compounds analyzed to be producible by the at least two elements, preparing image or spectrum-type analysis data for each of the plurality of collected compounds, selecting binary or higher-order compounds from among the plurality of compounds to mix the selected compounds at a predetermined mixing ratio, and generating training data including resultant data obtained by combining and processing the image or spectrum-type analysis data according to the predetermined mixing ratio, performing machine learning using the training data, and identifying and/or analyzing image or spectrum-type analysis data obtained from an actual material, using a model obtained through the machine learning.

Abstract: The invention relates to a red phosphor with a narrow full width at half maximum, having improved decay time and resolving afterglow phenomenon.

Abstract: The present invention relates to a method of converting a composite sheet into a multifunctional flexible keypad. The method according to the invention includes preparing a composite sheet including a flexible sheet and conductive particles dispersed therein, detecting and collecting position information on an applied pressure and a change in electrical resistance of the composite sheet from a plurality of probe terminals provided on the sheet while applying a pressure a plurality of times to an arbitrary position of the composite sheet, performing machine learning using the collected position information and electrical resistance information, and estimating position information on a pressure applied by a user to the composite sheet by using a Deep Neural Network (DNN) model derived through the machine learning when the user applies the pressure to a predetermined position of the composite sheet.

Abstract: The present invention relates to a sensing method using machine learning. A sensing method according to the present invention comprises the steps of: providing a stimulus multiple times to a random position on a material for generating a detectable signal in response to an external stimulus; performing machine learning by using the signal generated through the stimuli; and predicting a location or degree of a stimulus which is provided to the material, by using a function derived through the machine learning.

Abstract: A system for developing a composition for powder molding which, after a viscosity of the composition for powder molding and a degreasing process, extracts optimal compositional information of the composition in terms of the ratios of the residual binder materials is disclosed. Such a system includes a searching logic unit configured, after generating a plurality of candidate compositional information, to extract the optimal compositional information therefrom and a synthesis/analysis module configured to synthesize and analyze compositions corresponding to the plurality of candidate compositional information and provide to the searching logic unit measurement information on the viscosities of the compositions corresponding to each of the plurality of candidate compositional information and ratios of residual binder materials after a degreasing process.

Abstract: The present invention relates to a metal fluoride red phosphor and an application of the phosphor as a light emitting element, the metal fluoride red phosphor having a tetragonal crystal structure of a novel composition, and emitting light in the red color wavelength by being excited by ultraviolet rays or a blue excitation source, thereby being usefully applicable to a light emitting element such as a light emitting diode, a laser diode, a surface emitting laser diode, an inorganic electroluminescence element, and an organic electroluminescence element.

Abstract: A strain sensor with color emission indicating a strain is disclosed. The strain sensor can include a piezoresistive layer having a first portion of a polymer matrix body and conductive fillers dispersed in the first portion of the polymer matrix body, a mechano-luminescent layer having a second portion, which is disposed on the first portion, of the polymer matrix body, green emissive particles, and red emissive particles, the green and red emissive particles being dispersed in the second portion of the polymer matrix body, and a first and second electrodes spaced apart from each other and directly connected to the piezoresistive layer.

Abstract: A strain sensor with color emission indicating a strain is disclosed. The strain sensor can include a piezoresistive layer having a first portion of a polymer matrix body and conductive fillers dispersed in the first portion of the polymer matrix body, a mechano-luminescent layer having a second portion, which is disposed on the first portion, of the polymer matrix body, green emissive particles, and red emissive particles, the green and red emissive particles being dispersed in the second portion of the polymer matrix body, and a first and second electrodes spaced apart from each other and directly connected to the piezoresistive layer.

Abstract: Provided is a phosphor including: a host material expressed by a general formula (Ca1-xMex)a(Ce1-y-zLayPrz)bSicXd (0.5?b/a?7, 1.5?c/(a+b)?3.5, 4?d/(a+b)?6, 0?x?0.5, 0?y<1, 0?z?0.5, and 0?y+z<1, where X is at least one element selected from N, O, F, and Cl); and at least one activator that is selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm, and is solid-solutioned in the host material, wherein Me is at least one element selected from Ba, Mg, Sr, Mn, and Zn, and the host material includes, as a main phase, a phase that exhibits a diffraction peak having a relative intensity of 5% or more in ranges of Bragg's angles (2?) of 10.68-11.41°, 18.52-19.46°, 31.21-31.58°, 31.61-32.20°, and 36.81-37.49° of an X-ray diffraction pattern when a relative intensity of a diffraction peak having the strongest intensity is set to 100% in the X-ray powder diffraction pattern.

Abstract: A system for developing a composition for powder molding which, after a viscosity of the composition for powder molding and a degreasing process, extracts optimal compositional information of the composition in terms of the ratios of the residual binder materials is disclosed. Such a system includes a searching logic unit configured, after generating a plurality of candidate compositional information, to extract the optimal compositional information therefrom and a synthesis/analysis module configured to synthesize and analyze compositions corresponding to the plurality of candidate compositional information and provide to the searching logic unit measurement information on the viscosities of the compositions corresponding to each of the plurality of candidate compositional information and ratios of residual binder materials after a degreasing process.

Abstract: Provided is a phosphor including: a host material expressed by a general formula (Ca1-xMex)a(Ce1-y-zLayPrz)bSicXd (0.5?b/a?7, 1.5?c/(a+b)?3.5, 4?d/(a+b?6, 0?x?0.5, 0?y<1, 0?z?0.5, and 0?y+z<1, where X is at least one element selected from N, O, F, and Cl); and at least one activator that is selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm, and is solid-solutioned in the host material, wherein Me is at least one element selected from Ba, Mg, Sr, Mn, and Zn, and the host material includes, as a main phase, a phase that exhibits a diffraction peak having a relative intensity of 5% or more in ranges of Bragg's angles (2?) of 10.68-11.41°, 18.52-19.46°, 31.21-31.58°, 31.61-32.20°, and 36.81-37.49° of an X-ray diffraction pattern when a relative intensity of a diffraction peak having the strongest intensity is set to 100% in the X-ray powder diffraction pattern.