摘要:
An electric potential sensor includes a detecting electrode, a capacitor modulating unit for modulating a coupling capacitance between the detecting electrode and a measurement object by using an electrostatic force, and a shielding unit for electrically shielding the detecting electrode from electric fields due to the electrostatic force of the capacitor modulating unit. An electric potential of the measurement object is measured based on a change caused by the capacitor modulating unit in the amount of electrical charge induced in the detecting electrode. Entrance of lines of electric force due to the electrostatic force of the capacity modulating unit into the detecting electrode is prevented or reduced, so that an unfavorable mixture of driving noise into an output signal of the detecting electrode can be prevented or reduced.
摘要:
An electric potential measuring apparatus including a substrate disposed facing a measurement object, a detecting electrode provided insulated from the substrate, and a capacity modulating unit for modulating a coupling capacity between the detecting electrode and the measurement object. In the electric potential measuring apparatus, a region with a dielectric constant less than a dielectric constant of the substrate is formed in the substrate to achieve an increase in resistivity of a portion of the substrate between detecting electrodes, or a decrease in a stray capacity between the detecting electrode and the substrate.
摘要:
An electromechanical transducer includes a plurality cells that are electrically connected to form a unit. Each of the cells includes a first electrode and a second electrode provided with a gap being disposed therebetween. Dummy cells that are not electrically connected to the cells are provided around the outer periphery of the unit of the cells.
摘要:
When the initial displacement greatly varies among cells in an element, there is a need to reduce a bias voltage to be applied between electrodes. This decreases the sensitivity. An electromechanical transducer of the present invention includes an element having a plurality of cells. Each of the cells includes a first electrode and a second electrode that are provided with a cavity being disposed therebetween. A groove is provided at a position at a predetermined distance from the cavity of the cell on the outermost periphery of the element.
摘要:
A structure fabricating method plastically deforms a target portion of a substrate, to thereby fabricate a structure having an inclined segment that is inclined relative to a principal surface of the substrate. The method includes forming a projection on the target portion to project from the principal surface of the substrate or from an opposing surface of the substrate on the side opposite to the principal surface, and applying a force to the projection to plastically deform the target portion such that the target portion is bent in a direction from one surface of the substrate on the side where the projection is formed, toward another surface on the side opposite to the one surface.
摘要:
A micro-structure fabrication method fabricates a micro-structure including an inclined part inclined to a principal plane of a substrate by plastically deforming a work piece having the substrate with the principal plane. The structure fabrication method includes the steps of providing in the work piece a projection configured to protrude from a first surface and away from the principal plane of the substrate, and bending the work piece toward a second surface opposite to the first surface. The bending is accomplished by applying a force on a block including an inclined pressure plane that is abutted on the projection for plastically deforming the work piece, in which in bending the work piece, the direction of a first force applied on the work piece intersects with the direction of a second force of the inclined pressure plane pushing the projection.
摘要:
An electromechanical transducer includes a plurality cells that are electrically connected to form a unit. Each of the cells includes a first electrode and a second electrode provided with a gap being disposed therebetween. Dummy cells that are not electrically connected to the cells are provided around the outer periphery of the unit of the cells.
摘要:
In a method of fabricating a structure by plastically deforming a processing portion provided at a movable segment, a restraint segment configured to restrain movement of the movable segment is provided before an external force is applied to the processing portion. After processing of the processing portion is completed, the restraint segment is removed.
摘要:
Oscillating device including a movable member that is vibratable, a fixed section that is provided opposite to the movable member, a driving unit configured to drive the movable member, and at least two electrodes configured to generate a first signal corresponding to a drive state of the movable member. At least one electrode is provided on the movable member, and at least one electrode is provided on the fixed section. The driving unit can control the driving of the movable member on the basis of the first signal.
摘要:
A potential measuring device for measuring a potential of a measurement object, includes a detection electrode that faces the measurement object, a reference electrode disposed in a vicinity of the detection electrode that is electrostatically shielded by an electrostatic shield structure with respect to the measurement object, and capacitance modulator for modulating an electrostatic coupled capacitance between the detection electrode and the measurement object to measure a potential of the measurement object by using an electric signal generated on the detection electrode and an electric signal generated on the reference electrode.