摘要:
To suppress changes in capacitance due to displacement between electrodes opposing each other across a dielectric layer, thereby allowing stable manufacturing of a capacitance device having a desired capacitance.The capacitance device according to the present invention is of a configuration including a dielectric layer (10), a first electrode (11) formed on a predetermined surface (10a) of the dielectric layer (10), and a second electrode (12) formed on a surface (10b) on the opposite side of the dielectric layer (10) from the predetermined surface (10a). The forms of the first and second electrodes (11, 12) are set so that even in the event that the first electrode (11) is relatively displaced regarding position in a predetermined direction as to the second electrode (12), the area of the opposing-electrode region between the first electrode (11) and to the second electrode (12) is unchanged.
摘要:
A capacitance element includes a first electrode, a second electrode, a third electrode, a fourth electrode, a first dielectric portion, a second dielectric portion, and a third dielectric portion. To the first electrode, a signal having a first polarity is applied. To the second electrode, a signal having a second polarity is applied. The second polarity is opposite to the first polarity. To the third electrode, the signal having the second polarity is applied. The third electrode is disposed on a position opposed to the second electrode. To the fourth electrode, the signal having the first polarity is applied. The first dielectric portion is provided between the first electrode and the second electrode. The second dielectric portion is provided between the second electrode and the third electrode. The third dielectric portion is provided between the third electrode and the fourth electrode.
摘要:
A variable-capacitance element the capacitance value of which can be freely set to a desired value corresponding to a write voltage, and, once set, is maintained also after the write voltage is removed. The invention also provides a method for adjusting a variable-capacitance element, a variable-capacitance device and an electronic apparatus.According to the invention, a variable-capacitance element 100 includes a pair of electrodes 101 and 102 formed with a ferroelectric material layer 103 in between. The variable-capacitance element is adjusted by the steps of: maximizing or minimizing the sum of electric dipole moments of the ferroelectric material layer 103; and writing a desired capacitance to the variable-capacitance element 100 by applying a desired write voltage V between the electrodes 101 and 102 of the variable-capacitance element 100 the sum of electric dipole moments of the ferroelectric material layer 103 of which has been maximized or minimized.
摘要:
By a process for producing a porous carbon material from a plant-derived material as a raw material, said process including carbonizing the plant-derived material at 800° C. to 1,400° C. and then applying a treatment with an acid or alkali, a porous carbon material having a value of specific surface area of at least 10 m2/g as measured by the nitrogen BET method, a silicon content of at most 1 wt % and a pore volume of at least 0.1 cm3/g is obtainable from a plant-derived material, which has a silicon content of at least 10 wt %, as a raw material. Also provided is a process for producing a porous carbon material equipped with excellent functionality so that the porous carbon material can be used, for example, as an anode material for batteries, an adsorbent, masks, adsorbing sheets, or carriers.
摘要:
Disclosed is a variable capacitor that includes signal electrodes configured to sandwich a dielectric layer so as to generate a signal electric field, and control electrodes configured to sandwich the dielectric layer so as to generate a control electric field in a direction intersecting with the signal electric field generated between the signal electrodes.
摘要:
A hologram substrate includes a hologram section arranged on a surface of the hologram substrate, the hologram section having an uneven pattern configured to form a holographic image, in which the uneven pattern is a depth-modulated pattern and has smooth boundaries between projections and depressions.
摘要:
A user carries a user medium in a facility, for example, in a theme park. Position data and time data are written into the user medium according to user's actions. Photographic devices installed at predetermined places constantly take pictures, and the pictures are stored in a picture production apparatus. When the user wishes to receive the pictures of himself/herself, he/she allows the picture production apparatus to read the data of the user medium when he/she leaves the facility. The picture production apparatus then extracts pictures for the user from the stored pictures based on the data read from the user medium, and produces a picture package. Then, the picture production apparatus records the produced picture package into a portable recording medium, for example, a disk, a memory card, or magnetic tape, and provides it to the user, or distributes the picture package to the user via a communication line.
摘要:
A laminated variable capacitor including: input-output terminals for inputting an alternating-current signal and outputting an output signal; and controlling terminals for controlling a capacitance value for voltage of the input alternating-current signal; wherein a total area of external electrodes for input and output connected to said input-output terminals is larger than a total area of external electrodes for control connected to said controlling terminals, or the external electrodes for input and output connected to said input-output terminals are different in structure from the external electrodes for control connected to said controlling terminals.
摘要:
To stably perform optical recording and optical reproducing under optimum conditions, in an optical recording medium having a writable recording layer on a substrate and having a maker recording area in which recording is performed by a maker on the recording layer, individual drive control information of the optical recording medium is recorded in the maker recording area, and, in optical recording and optical reproducing, optical recording and optical reproducing are performed by the drive control information under optimum conditions.
摘要:
In an optical recording medium having a writable area in which grooves are formed along recording tracks and a read-only area in which pits are formed along the recording tracks, sufficient levels of signals required for data write and read can be assured even with the track pitch reduced for a higher recording density. Assuming that the refractive index of a medium provided extending from a light-incident surface to a surface in which the grooves and pits are formed is n and the wavelength of a light used for data write and read is &lgr;, the grooves and pits has a width within a range of &lgr;/7.5 n to &lgr;/6. On the assumption that the width of each of the grooves formed in the writable area is Wg and the pitch between the recording tracks in the writable area is Tp1, Wg/Tp1 is within a range of 18.4% to 31.1%. When it is assumed that the width of each of the pitches formed in the read-only area is Wp and the pitch between the recording tracks in the read-only area is Tp2, Wp/Tp2 is within a range of 35.7% to 44.3%.