Abstract: A pipette includes a capillary, a pressure chamber, a drive unit, and a control unit. The capillary has a first end and a second end that are two ends in a length direction and that are open. The pressure chamber communicates with an inside of the capillary via the second end. The drive unit changes a volume of the pressure chamber. The control unit controls the drive unit. The control unit outputs a vibrational movement signal that drives the drive unit so that a liquid moves from a mid-position in the capillary to a finish position that is located closer to the second end than the mid-position. The vibrational movement signal has a waveform that drives the drive unit so that the volume of the pressure chamber alternately increases and decreases repeatedly.

Abstract: An ultrasound emission device includes a generation part which generates an ultrasonic wave to an object side, and a bag containing a sealed liquid on the object side of the generation part. The generation part includes a piezoelectric element for generating the ultrasonic wave. The piezoelectric element includes a first surface facing the object side and a second surface facing away from the object side. The piezoelectric element includes, between the first and second surfaces, a piezoelectric layer which extends along the first and second surfaces, and a pair of electrodes which are superposed on two surfaces of the piezoelectric layer. The piezoelectric element flexurally deforms so that the first and second surfaces flex to the same side. The first surface is exposed to the inside of the bag to contact the liquid. The second surface is isolated from the liquid and is in contact with a gas.

Abstract: In a capillary of a pipette, first and second ends in a longitudinal direction are opened. A pressure chamber communicates through the second end with an internal portion of the capillary. A driving part changes a volume of the pressure chamber. A control part outputs a first signal driving the driving part so that the volume of the pressure chamber increases and liquid is suctioned from the first end. A suction signal in the first signal drives the driving part so that the volume of the pressure chamber increases from a volume before suction of the liquid by a first increase amount to become a post-suction volume. A brake signal is output following the suction signal and drives the driving part so that the volume of the pressure chamber is reduced from the post-suction volume by an amount which is smaller in absolute value than the first increase amount.

Abstract: There are provided a piezoelectric element capable of implementing an acoustic generator having excellent characteristics and a simple structure, and an acoustic generator, an acoustic generation device, and an electronic apparatus using the same. A piezoelectric element includes a piezoelectric layer; a first conductor; a second conductor; a third conductor; a fourth conductor; a fifth conductor; and a sixth conductor, and includes a first portion, a second portion, and a third portion. The first portion is a portion where the first conductor and the second conductor face each other, and the second portion is a portion where the third conductor and the fourth conductor face each other. The third portion is a portion where the fifth conductor and the sixth conductor do not face each other, the third portion being located between the first portion and the second portion.

Abstract: There are provided an acoustic generator capable of generating a high-quality sound having little distortion, and an acoustic generation device and an electronic apparatus using the same. An acoustic generator has a vibration body, a first exciter, a second exciter, a first damping material and a second damping material. The vibration body has two surfaces which are positioned with a gap therebetween in a first direction. The first exciter and the second exciter are disposed on the vibration body. The first damping material is disposed on the vibration body and has a first portion which overlaps the first exciter when viewed in the first direction. The second damping material is disposed on the vibration body and has a second portion which overlaps the second exciter when viewed in the first direction.

Abstract: An acoustic generator includes a vibration body; a first exciter and a second exciter which are disposed on the vibration body; a first damping material disposed on the vibration body and having a first portion which overlaps the first exciter; and a second damping material disposed on the vibration body and having a second portion which overlaps the second exciter. The first damping material is disposed so as to straddle at least a portion of a first segment which is a portion of a contour of the first exciter which portion does not face the second exciter, and the second damping material is disposed so as to straddle at least a portion of a second segment which is a portion of a contour of the second exciter which portion does not face the first exciter.

Abstract: There are provided a piezoelectric element capable of implementing an acoustic generator having excellent characteristics and a simple structure, and an acoustic generator, an acoustic generation device, and an electronic apparatus using the same. A piezoelectric element includes a piezoelectric layer; a first conductor; a second conductor; a third conductor; a fourth conductor; a fifth conductor; and a sixth conductor, and includes a first portion, a second portion, and a third portion. The first portion is a portion where the first conductor and the second conductor face each other, and the second portion is a portion where the third conductor and the fourth conductor face each other. The third portion is a portion where the fifth conductor and the sixth conductor do not face each other, the third portion being located between the first portion and the second portion.

Abstract: A sound generator 30 includes a piezoelectric element 1, a vibrating body 3a, a reflection member 81, a reflection member 82, an opening 21, and an opening 22. The vibrating body 3a vibrates due to vibration of the piezoelectric element 1 and generates a sound. The reflection member 81 is disposed in a first direction from the vibrating body 3a so as to be inclined with respect to the vibrating body 3a. The reflection member 82 is disposed in a second direction, which is opposite to the first direction, from the vibrating body 3a so as to face the reflection member 81 with the vibrating body 3a therebetween and so as to be inclined with respect to the vibrating body 3a. The opening 21 faces in a third direction. The opening 22 faces in a fourth direction, which is different from the third direction.

Abstract: There are provided an acoustic generator capable of generating a high-quality sound having little distortion, and an acoustic generation device and an electronic apparatus using the same. An acoustic generator has a vibration body, a first exciter, a second exciter, a first damping material and a second damping material. The vibration body has two surfaces which are positioned with a gap therebetween in a first direction. The first exciter and the second exciter are disposed on the vibration body. The first damping material is disposed on the vibration body and has a first portion which overlaps the first exciter when viewed in the first direction. The second damping material is disposed on the vibration body and has a second portion which overlaps the second exciter when viewed in the first direction.

Abstract: An acoustic generator includes a vibration body; a first exciter and a second exciter which are disposed on the vibration body; a first damping material disposed on the vibration body and having a first portion which overlaps the first exciter; and a second damping material disposed on the vibration body and having a second portion which overlaps the second exciter. The first damping material is disposed so as to straddle at least a portion of a first segment which is a portion of a contour of the first exciter which portion does not face the second exciter, and the second damping material is disposed so as to straddle at least a portion of a second segment which is a portion of a contour of the second exciter which portion does not face the first exciter.

Abstract: Provided are a sound generator and an electronic apparatus using the same. The sound generator includes a vibrating body, an exciter that is attached to the vibrating body and bends to vibrate the vibrating body in the thickness direction of the vibrating body by vibrating the exciter itself, an enclosure that is joined to the vibrating body and forms a first space enclosed together with the vibrating body, and a duct that connects between the first space and the external space. A spacing between the vibrating body and the surface of the enclosure facing the vibrating body is smaller than ½ of the length of the wavelength of resonance having the lowest frequency in the bending vibration of the vibrating body.

Abstract: An acoustic generator according to an embodiment includes a film-shaped vibrating body, a flame, and an exciter. The frame is configured to fix at least both ends of the vibrating body in a second direction perpendicular to a first direction that is a thickness direction of the vibrating body. The exciter is disposed on the vibrating body, and is configured to vibrate itself to vibrate the vibrating body. The vibrating body has a value of an average coefficient of linear expansion during a temperature change from 90° C. to 40° C. set to be not less than a value of the average coefficient of linear expansion of the vibrating body during a temperature change from 40° C. to 90° C., and set to be not less than a value of an average coefficient of linear expansion of the flame during a temperature change from 90° C. to 40° C.

Abstract: An acoustic generator according to an aspect of an embodiment includes a piezoelectric element (exciter), a vibrating body. The piezoelectric element receives an input of an electrical signal and is caused to vibrate. The piezoelectric element is mounted on the vibrating body, and the vibrating body is caused to vibrate by the vibration of the piezoelectric element. The acoustic generator includes at least one pair of two adjacent portions with different stiffnesses in a plan view, and has at least one damper provided contacting with both of the two adjacent portions.

Abstract: A sound generator 30 includes a piezoelectric element 1, a vibrating body 3a, a reflection member 81, a reflection member 82, an opening 21, and an opening 22. The vibrating body 3a vibrates due to vibration of the piezoelectric element 1 and generates a sound. The reflection member 81 is disposed in a first direction from the vibrating body 3a so as to be inclined with respect to the vibrating body 3a. The reflection member 82 is disposed in a second direction, which is opposite to the first direction, from the vibrating body 3a so as to face the reflection member 81 with the vibrating body 3a therebetween and so as to be inclined with respect to the vibrating body 3a. The opening 21 faces in a third direction. The opening 22 faces in a fourth direction, which is different from the third direction.

Abstract: An acoustic generator according to an embodiment includes a film-shaped vibrating body, a flame, and an exciter. The frame is configured to fix at least both ends of the vibrating body in a second direction perpendicular to a first direction that is a thickness direction of the vibrating body. The exciter is disposed on the vibrating body, and is configured to vibrate itself to vibrate the vibrating body. The vibrating body has a value of an average coefficient of linear expansion during a temperature change from 90° C. to 40° C. set to be not less than a value of the average coefficient of linear expansion of the vibrating body during a temperature change from 40° C. to 90° C., and set to be not less than a value of an average coefficient of linear expansion of the flame during a temperature change from 90° C. to 40° C.

Abstract: Provided are a sound generator and an electronic apparatus using the same. The sound generator includes a vibrating body, an exciter that is attached to the vibrating body and bends to vibrate the vibrating body in the thickness direction of the vibrating body by vibrating the exciter itself, an enclosure that is joined to the vibrating body and forms a first space enclosed together with the vibrating body, and a duct that connects between the first space and the external space. A spacing between the vibrating body and the surface of the enclosure facing the vibrating body is smaller than ½ of the length of the wavelength of resonance having the lowest frequency in the bending vibration of the vibrating body.

Abstract: An acoustic generator according to an aspect of an embodiment includes a piezoelectric element (exciter), a vibrating body. The piezoelectric element receives an input of an electrical signal and is caused to vibrate. The piezoelectric element is mounted on the vibrating body, and the vibrating body is caused to vibrate by the vibration of the piezoelectric element. The acoustic generator includes at least one pair of two adjacent portions with different stiffnesses in a plan view, and has at least one damper provided contacting with both of the two adjacent portions.

Abstract: An optical connection device according to the invention is an optical connection device for optically coupling light propagated through an optical waveguide to an optical element arranged outside the optical waveguide and with the following configuration. Part of the optical waveguide is removed so as to be shaped like a groove. The optical waveguide and the optical element are arranged so that an optical axis of the optical waveguide intersects an optical axis of the optical element at a specified angle inside the groove. An optical unit is arranged at a position of intersection of the optical axes for turning light by reflection from one optical axis along the other optical axis.

Abstract: An optical connection device according to the invention is an optical connection device for optically coupling light propagated through an optical waveguide to an optical element arranged outside the optical waveguide and with the following configuration. Part of the optical waveguide is removed so as to be shaped like a groove. The optical waveguide and the optical element are arranged so that an optical axis of the optical waveguide intersects an optical axis of the optical element at a specified angle inside the groove. An optical unit is arranged at a position of intersection of the optical axes for turning light by reflection from one optical axis along the other optical axis.