Abstract: Provided is a method for etching an atomic layer. The method for etching the atomic layer includes providing a substrate to a process chamber, wherein the process chamber comprises a first chamber part and a second chamber part, and the substrate is provided in the second chamber part, generating adsorption gas plasma in the first chamber part, adsorbing radicals of the adsorption gas plasma to the substrate so as to form a treatment layer, generating etching gas plasma in the first chamber part, and allowing electrons and ions of the etching gas plasma to be alternately incident into the treatment layer so as to perform desorption of the treatment layer.

Abstract: To improve pressure measurement reliability and safety of a battery cell and finely control pressure, the disclosure of the present application provides a battery cell pressing device comprising: a battery cell; a plurality of upper plates disposed above the battery cell; a plurality of lower plates disposed below the battery cell; a first pressing member interposed between the plurality of upper plates; and a second pressing member interposed between the plurality of lower plates, wherein a magnetic force is generated at the first pressing member and the second pressing member by an applied current.

Abstract: A prelithiated negative electrode, and a secondary battery including a prelithiated electrode, including a negative electrode current collector; and a negative electrode active material layer present on at least one surface of the negative electrode current collector. The negative electrode active material layer includes high-capacity artificial graphite having no carbon coating. The negative electrode active material layer is prelithiated, and the content of lithium intercalated to the prelithiated negative electrode active material layer is 3% to 5% based on the lithium content intercalated when the negative electrode is charged to 100%.

Abstract: The present invention relates to a method and device for diagnosing a defect of a collaborative robot, the method comprising the steps in which: an electronic device generates a sensing data structure for managing sensing data collected from at least one collaborative robot; the electronic device generates an operation data structure for managing operation data associated with the operation of the collaborate robot; the electronic device generates a malfunction data structure for managing malfunction data of a point in which the severity of the operation equals to or is higher than a threshold; and the electronic device stores data collected from the at least one collaborative robot in accordance with the structures. Application to other embodiments is also possible.

Abstract: An electric stimulator for alpha-wave derivation is characterized in that frequency selected from a range of 1 Hz to 50 Hz, preferably, 7 Hz to 14 Hz, and an output voltage are applied to auricle of a patient's ears to derive alpha-waves, and that cycle and intensity of stimulation are varied depending upon body temperature and blood sugar. Prompt reaction may be obtained by directly applying the voltage to the ears, and the reaction may continue when stimulation is extended. In addition, it is suitable to treat various diseases having common cause due to stress or arousal reaction in the human body.

Abstract: An electric stimulator for alpha-wave derivation is characterized in that frequency selected from a range of 1 Hz to 50 Hz, preferably, 7 Hz to 14 Hz, and an output voltage are applied to auricle of a patient's ears to derive alpha-waves, and that cycle and intensity of stimulation are varied depending upon body temperature and blood sugar. Prompt reaction may be obtained by directly applying the voltage to the ears, and the reaction may continue when stimulation is extended. In addition, it is suitable to treat various diseases having common cause due to stress or arousal reaction in the human body.