Abstract: An inkjet apparatus includes an inkjet print head movable in a designated direction and including a first print head nozzle configured to jet ink droplets and a second print head nozzle configured to jet a moisturizing liquid. The inkjet apparatus may also include a capping unit detachably coupled to the inkjet printing head and including a first cap protecting the first print head nozzle and a second cap protecting the second print head nozzle when the capping unit is coupled to the inkjet print head. The inkjet apparatus may further include a processor operatively connected to the inkjet print head and the capping unit, and configured to cause the inkjet print head to jet the moisturizing liquid on the first cap.

Abstract: An ink printing apparatus includes an inkjet print head arranged to be movable in a designated direction and including a first print head nozzle configured to jet ink droplets and a second print head nozzle configured to jet a cleaning liquid. The ink printing apparatus may also include a capping unit detachably coupled to the inkjet print head and protecting the first print head nozzle and the second nozzle when coupled to the inkjet print head. The ink printing apparatus may further include a wiper removing solidified ink droplets around the first print head nozzle. The ink printing apparatus may further include a processor operatively connected to the inkjet print head and the capping unit, and configured to jet the cleaning liquid to the wiper through the inkjet print head.

Abstract: A printing apparatus is proposed. The apparatus may include a housing, a first printing unit configured to move in a direction with reference to the housing and print a color image having cyan, yellow, magenta, and black (CYMK) colors onto a first print area of a print medium through a digital method. The apparatus may also include a second printing unit located on a movement path of the print medium and configured to apply white ink onto a second print area, The apparatus may further include a processor configured to control an operation of at least one of the first printing unit and the second printing unit, and the second print area may include at least a portion of the first print area.

Abstract: A printing apparatus is proposed. The apparatus may include a housing, an application unit configured to apply a binder onto a print area of a print medium by using a thermal transfer method, wherein the print medium moves in a direction with respect to the housing, and a processor electrically connected to the application unit and configured to control an operation of the application unit. The application unit may include a binder ribbon including a binder, a first roll around which an end of the binder ribbon is wound, a second roll around which another end of the binder ribbon is wound, and a thermal transfer unit configured to thermally transfer the binder from the binder ribbon to the printing area.

Abstract: An inkjet printing apparatus is proposed. The inkjet printing apparatus may include an inkjet print head including at least one nozzle configured to spray ink onto a print medium. The apparatus may also include a cap configured to be coupled to at least one area of the inkjet print head, and configured to protect the at least one nozzle when coupled to the inkjet print head. The cap may include an accommodation space opened toward the at least one nozzle. The accommodation space may accommodate cleaning liquid for preventing ink from coagulating in the at least one nozzle.

Abstract: The present disclosure provides a liquid metal precursor solution, including: metal precursor particles including metal particles and a polymer film surrounding the metal particles; and a solvent mixed with the metal precursor particles, wherein each of the polymer film and the solvent includes a functional group having electrostatic repulsion force to each other so that the metal precursor particles may be dispersed in the solvent.

Abstract: Disclosed are a nerve stimulator electrode and a method of manufacturing the same. More particularly, the present invention provides a nerve stimulator electrode including biocompatible solid electrolyte; and an ion diffusion barrier formed on the biocompatible solid electrolyte, wherein the biocompatible solid electrolyte includes an ionic liquid and a biocompatible polymer matrix.

Abstract: This application relates to an inkjet printing apparatus. In one aspect, the apparatus includes a main frame and a flat-bed moving in a first direction with respect to the main frame. The apparatus may also include a first printing device located on a movement path of the flat-bed and comprising a first inkjet head for jetting base ink onto a print area of the print medium. The apparatus may further include a second printing device located on the movement path of the flat-bed and comprising a second inkjet head for jetting activator ink onto the print area of the print medium onto which the base ink is jetted. The apparatus may further include at least one processor electrically connected to the flat-bed, the first printing device, and the second printing device and configured to control operations of the flat-bed, the first printing device, and the second printing device.

Abstract: Provided is a flexible pressure sensor. The flexible pressure includes: a lower structure; and an upper structure on the lower structure, wherein the lower structure includes: a flexible substrate; and first electrodes on the flexible substrate and second electrode spaced apart from the first electrodes, and the upper structure includes: a support; first protrusion structures integrally connected to the support to protrude from a bottom surface of the support; and second protrusion structures integrally connected to the support to protrude from the bottom surface of the support, the second protrusion structures being spaced apart from the first protrusion structures, wherein the first protrusion structures are in contact with a top surface of the flexible substrate, the second protrusion structures are vertically spaced apart from the first and second electrodes, and when viewed in a plan view, the first protrusion structures are configured to completely surround the second protrusion structures.

Abstract: The present disclosure provides a transparent and highly sensitive pressure sensor with improved linearity and pressure sensitivity including: a first substrate on which a micropattern having pyramidal structures is formed; a first electrode layer coated on the micropattern of the first substrate; a second substrate stacked on the first electrode layer; and a second electrode layer stacked on the second substrate, wherein the first substrate and the second substrate show a difference in light refractive index of 10% or less in the visible light region.

Abstract: The present disclosure provides a liquid metal precursor solution, including: metal precursor particles including metal particles and a polymer film surrounding the metal particles; and a solvent mixed with the metal precursor particles, wherein each of the polymer film and the solvent includes a functional group having electrostatic repulsion force to each other so that the metal precursor particles may be dispersed in the solvent.

Abstract: This application relates to an inkjet printing apparatus. In one aspect, the apparatus includes a main frame and a flat-bed moving in a first direction with respect to the main frame. The apparatus may also include a first printing device located on a movement path of the flat-bed and comprising a first inkjet head for jetting base ink onto a print area of the print medium. The apparatus may further include a second printing device located on the movement path of the flat-bed and comprising a second inkjet head for jetting activator ink onto the print area of the print medium onto which the base ink is jetted. The apparatus may further include at least one processor electrically connected to the flat-bed, the first printing device, and the second printing device and configured to control operations of the flat-bed, the first printing device, and the second printing device.

Abstract: The present disclosure provides a transparent pressure sensor including: a first substrate on which a micropattern having pyramidal structures is formed; a first electrode layer coated on the micropattern of the first substrate; a second substrate stacked on the first electrode layer; and a second electrode layer stacked on the second substrate, wherein the first substrate and the second substrate show a difference in light refractive index of 10% or less in the visible light region.

Abstract: The present system generates output signals conveying information related to a position of one or more body parts of the subject, location of the body of the subject and/or physiological information related to the subject; obtains a set of fall criteria that describe whether the subject is likely to fall; determines one or more body position parameters, one or more physiological parameters, and/or one or more body location parameters; compares the determined one or more physiological parameters, the one or more body position parameters, and/or the one or more body location parameters to criteria in the set of fall criteria; and, responsive to the one or more body position parameters, the one or more physiological parameters, and or the one or more body location parameters satisfying individual fall criteria in the set of fall criteria, generate an alert.

Abstract: The provided are a polylactic acid-polyalkylene glycol copolymer and a composition comprising the same which have excellent crystallization rate, wherein the polylactic acid-polyalkylene glycol copolymer is prepared by melt-reacting polylactic acid with polyalkylene glycol of which one end group is substituted with a functional group and has improved eco-friendliness, injection moldability, and excellent heat resistance which makes it to be suitably applied to various molded articles requiring great heat resistance, such as disposables, kitchen utensils and containers, electric-electronic parts and automobile parts.

Abstract: Provided is an energy harvesting device having a self-powered touch sensor so that the energy harvesting device is capable of sensing pressure due to an external touch without using external power and harvesting and storing energy generated in response to the touch pressure. The energy harvesting device includes first and second electrodes facing each other, an energy generation layer disposed on the first electrode, and an elastic layer disposed on the second electrode layer, the elastic layer facing the energy generation layer and being configured to be elastically deformed according to pressure applied to the elastic layer. The energy generation layer is configured to generate energy according to the pressure applied to the energy generation layer.

Abstract: A single-walled carbon nanotube-based planar photodetector includes a substrate; a first electrode and a second electrode disposed on the substrate and spaced apart from each other; a plurality of single-walled carbon nanotubes, each of the plurality of single-walled carbon nanotubes contacting the first electrode and the second electrode; and an adsorbent attached to a surface of at least one of the plurality of single-walled carbon nanotubes, wherein the adsorbent is capable of doping the at least one of the plurality of single-walled carbon nanotubes by photo-excitation.

Abstract: A single-walled carbon nanotube-based planar photodetector includes a substrate; a first electrode and a second electrode disposed on the substrate and spaced apart from each other; a plurality of single-walled carbon nanotubes, each of the plurality of single-walled carbon nanotubes contacting the first electrode and the second electrode; and an adsorbent attached to a surface of at least one of the plurality of single-walled carbon nanotubes, wherein the adsorbent is capable of doping the at least one of the plurality of single-walled carbon nanotubes by photo-excitation.

Abstract: Provided is an energy harvesting device having a self-powered touch sensor so that the energy harvesting device is capable of sensing pressure due to an external touch without using external power and harvesting and storing energy generated in response to the touch pressure. The energy harvesting device includes first and second electrodes facing each other, an energy generation layer disposed on the first electrode, and an elastic layer disposed on the second electrode layer, the elastic layer facing the energy generation layer and being configured to be elastically deformed according to pressure applied to the elastic layer. The energy generation layer is configured to generate energy according to the pressure applied to the energy generation layer.

Abstract: An apparatus for online partial discharge testing includes a split-core radio-frequency current transformer sensor, an actuation subassembly, and a biasing member. The current transformer sensor has a first portion, a second portion, and a sensor hinge operably engaged between the first portion and the second portion. The actuation subassembly includes an elongate first member secured to the first portion of the current transformer sensor, a second member secured to the second portion of the current transformer sensor and configured to be movable relative to the first member, and a third member engaged with the second member and configured to translate along a length of the first member. The biasing member is configured to pivotally bias the first portion and the second portion of the current transformer sensor toward each other relative to the sensor hinge, with the biasing member secured relative to the first member.