Abstract: A biosignal electrode that includes a substrate having first and second opposed main surfaces; a conductive material pattern on the first main surface of the substrate, the conductive material pattern defining a plurality of open spaces extending through the conductive material pattern and exposing the first surface of the substrate therethrough; and a biocompatible glue material within the plurality of open spaces of the conductive material pattern.

Abstract: The present disclosure is directed to a heater including: a resistor including a heat-generating portion; a lead joined to an end portion of the resistor; and an insulating base covering the resistor and the lead. The heater includes a connection portion in which the resistor and the lead overlap each other in a direction perpendicular to an axial direction of the lead, and a boundary between the resistor and the lead has a curved shape when the connection portion is seen in a cross section perpendicular to the axial direction.

Abstract: The present disclosure is directed to a heater including: a resistor including a heat-generating portion; a lead joined to an end portion of the resistor; and an insulating base covering the resistor and the lead. The heater includes a connection portion in which the resistor and the lead overlap each other in a direction perpendicular to an axial direction of the lead, and a boundary between the resistor and the lead has a curved shape when the connection portion is seen in a cross section perpendicular to the axial direction.

Abstract: The present invention provides a heater including an insulating base made of ceramic, and an electrically conductive line embedded in the insulating base. The electrically conductive line contains electrically conductive grains and ceramic grains. The average grain size of the ceramic grains in the electrically conductive line is smaller than the average grain size of the ceramic grains in the insulating base.

Abstract: The present invention is a heater including: a resistor including a heat-generating portion; a lead joined to an end portion of the resistor; and an insulating base covering the resistor and the lead. The heater includes a connection portion in which the resistor and the lead overlap each other in a direction perpendicular to an axial direction of the lead, and a boundary between the resistor and the lead has a curved shape when the connection portion is seen in a cross section perpendicular to the axial direction.

Abstract: A purpose is to obtain a frequency characteristic of a good sound pressure. To achieve the purpose, an acoustic generator according to an embodiment includes a piezoelectric element (exciter), a flat vibrating body, and a resin layer. The piezoelectric element vibrates when an electric signal is input. To the vibrating body, the piezoelectric element is attached. The vibrating body vibrates with the piezoelectric element due to the vibration of the piezoelectric element. The resin layer is arranged to cover surfaces of the piezoelectric element and the vibrating body to which the piezoelectric element is attached. The resin layer is integrated with the vibrating body and the piezoelectric element. Also, to the resin layer, irregularity is provided.

Abstract: An acoustic generator according to one embodiment includes an exciter, a vibrating portion, a frame, and a lead. The exciter receives an input of an electrical signal and is caused to vibrate. The exciter is mounted on the vibrating portion, and the vibrating portion is caused to vibrate by the vibration of the exciter. The frame is provided on an external circumferential portion of the vibrating portion, and supports the vibrating portion substantially flat. The lead is connected to the exciter, and inputs an electrical signal to the exciter. The frame includes a terminal serving as a connection point to the lead.

Abstract: There are provided a multi-layer piezoelectric element which is capable of suppression of occurrence of an imperfect area, suffers from no development of leakage current even with moisture intrusion, has long-term freedom from variations in displacement and can achieve stable driving, as well as to provide a piezoelectric actuator, an injection device, and a fuel injection system provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrodes acting as positive and negative internal electrodes are laminated; an inorganic coating attached to a side surface of the stacked body where ends of both the positive internal electrodes and the negative internal electrodes are exposed; and metal particles composed predominantly of a metal element contained in the internal electrodes, the metal particles dispersed in the inorganic coating.

Abstract: An acoustic generator according to one embodiment includes an exciter, a vibrating portion, a frame, and a lead. The exciter receives an input of an electrical signal and is caused to vibrate. The exciter is mounted on the vibrating portion, and the vibrating portion is caused to vibrate by the vibration of the exciter. The frame is provided on an external circumferential portion of the vibrating portion, and supports the vibrating portion substantially flat. The lead is connected to the exciter, and inputs an electrical signal to the exciter. The frame includes a terminal serving as a connection point to the lead.

Abstract: To provide a vibration isolation unit capable of reducing the number of parts, man-hour and material cost, and suppressing the product cost. One side of a stopper rubber member continues to the outer edge of a diaphragm. Accordingly, because they can be vulcanizingly molded simultaneously, the number of parts can be reduced. Also, because the diaphragm is attached to an outer tube member, the stopper rubber member also can be fixed simultaneously, and therefore the man-hour can be reduced. Further, because one side of the stopper rubber member continues to the outer edge of the diaphragm, overlapping of them in an axial view can be avoided, and a rubber material can be used efficiently. Thus, the number of parts, man-hour and material cost can be reduced and the product cost of the overall vibration isolation unit can be suppressed.

Abstract: A purpose is to obtain a frequency characteristic of a good sound pressure. To achieve the purpose, an acoustic generator according to an embodiment includes a piezoelectric element (exciter), a flat vibrating body, and a resin layer. The piezoelectric element vibrates when an electric signal is input. To the vibrating body, the piezoelectric element is attached. The vibrating body vibrates with the piezoelectric element due to the vibration of the piezoelectric element. The resin layer is arranged to cover surfaces of the piezoelectric element and the vibrating body to which the piezoelectric element is attached. The resin layer is integrated with the vibrating body and the piezoelectric element. Also, to the resin layer, irregularity is provided.

Abstract: A ceramic member in which the metal layers with high void ratio are sufficiently sintered to lower a residue of resin is produced. The method for manufacturing a ceramic member which comprises a step of forming a stacked compact from a plurality of metallic paste layers containing a metal component M1 that are stacked one on another via ceramic green sheets, and a step of firing the stacked compact, wherein at least one of plural metallic paste layers is formed as a second metallic paste layer that has the mass percentage X higher than that of the metallic paste layer that adjoin therewith in the stacking direction, the mass percentage X being the proportion of the metal component M1 to the total metal content in the metallic paste layer.

Abstract: A piezoelectric actuator includes a stacked body composed of internal electrodes and piezoelectric layers which are stacked on each other; and a surface electrode disposed on at least one of main surfaces of the stacked body so as to be electrically connected to the internal electrodes. The internal electrodes each includes a first electrode and a second electrode. The stacked body has an active section in which the first electrodes and the second electrodes of the internal electrodes are arranged so as to overlap each other in a stacking direction thereof, and an inactive section which is every section of the stacked body other than the active section. An internal electrode placed on a one-main-surface side of the internal electrodes is configured so that its end part situated near a boundary between the active section and the inactive section is curved toward the other main surface.

Abstract: A piezoelectric actuator includes a stacked body composed of internal electrodes and piezoelectric layers which are stacked on each other; and a surface electrode disposed on at least one of main surfaces of the stacked body so as to be electrically connected to the internal electrodes. The internal electrodes each includes a first electrode and a second electrode. The stacked body has an active section in which the first electrodes and the second electrodes of the internal electrodes are arranged so as to overlap each other in a stacking direction thereof, and an inactive section which is every section of the stacked body other than the active section. An internal electrode placed on a one-main-surface side of the internal electrodes is configured so that its end part situated near a boundary between the active section and the inactive section is curved toward the other main surface.

Abstract: A liquid-sealed vibration isolation device including: a cylindrical outer tube member; a boss member; a vibration isolation base body ; a diaphragm; a partition member; an orifice; a decompressing-cum-pouring hole allowing the liquid-sealed chamber to communicate with the outside; and a sealer sealing the decompressing-cum-pouring hole. In the liquid-sealed vibration isolation device, an annular attaching member is provided to which the diaphragm is vulcanizingly adhered on the inner peripheral side and which is formed into an annular shape when viewed in the axial direction and attached to the upper end side of the outer tube member, and the decompressing-cum-pouring hole is disposed in the annular attaching member.

Abstract: The present invention provides a heater including an insulating base made of ceramic, and an electrically conductive line embedded in the insulating base. The electrically conductive line contains electrically conductive grains and ceramic grains. The average grain size of the ceramic grains in the electrically conductive line is smaller than the average grain size of the ceramic grains in the insulating base.

Abstract: The present invention is a heater including: a resistor including a heat-generating portion; a lead joined to an end portion of the resistor; and an insulating base covering the resistor and the lead. The heater includes a connection portion in which the resistor and the lead overlap each other in a direction perpendicular to an axial direction of the lead, and a boundary between the resistor and the lead has a curved shape when the connection portion is seen in a cross section perpendicular to the axial direction.

Abstract: A multilayer piezoelectric element includes a plurality of piezoelectric layers and a plurality of metal layers stacked alternately. The plurality of metal layers include a plurality of low-filled metal layers having a lower filling rate of metal composing the metal layers than oppositely disposed metal layers adjacent to each other in a stacking direction. The plurality of metal layers may include a plurality of thin metal layers having a smaller thickness than oppositely disposed metal layers adjacent to each other in a stacking direction. Where the plurality of metal layers are composed mainly of an alloy, the plurality of metal layers may include a plurality of high-ratio metal layers having a higher ratio of a component constituting the alloy than oppositely disposed metal layers adjacent to each other in a stacking direction.

Abstract: There are provided a multi-layer piezoelectric element which is capable of suppression of occurrence of an imperfect area, suffers from no development of leakage current even with moisture intrusion, has long-term freedom from variations in displacement and can achieve stable driving, as well as to provide a piezoelectric actuator, an injection device, and a fuel injection system provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrodes acting as positive and negative internal electrodes are laminated; an inorganic coating attached to a side surface of the stacked body where ends of both the positive internal electrodes and the negative internal electrodes are exposed; and metal particles composed predominantly of a metal element contained in the internal electrodes, the metal particles dispersed in the inorganic coating.

Abstract: A heater includes: a resistor having a heat-generating portion; a lead joined to an end portion of the resistor; and an insulating base body covering the resistor and the lead, the lead being made to have a portion whose profile is narrowed toward a distal end on a heat-generating portion side of the lead, a joining portion of the resistor and the lead being a region where the resistor is spaced apart from the insulating base body through the lead as viewed in cross section perpendicular to an axial direction of the lead.