70 results about "Electric dipole moment" patented technology

A method for generating electromagnetic waves in the ELF / ULF comprising the steps of using a ground-based Horizontal Electric Dipole (HED) antenna to send electromagnetic pulses upwardly in the E-region of the ionosphere to form an oscillatory or pulsed electric field; allowing said pulsed electric field to interact with magnetized plasma of the lower ionosphere to generate a pulsed horizontal and vertical current which have associated Horizontal and Vertical Electric Dipole moment; and allowing them to radiate.

A method for making an electronic device may include forming a poled superlattice comprising a plurality of stacked groups of layers and having a net electrical dipole moment. Each group of layers of the poled superlattice may include a plurality of stacked semiconductor monolayers defining a base semiconductor portion and at least one non-semiconductor monolayer thereon. The at least one non-semiconductor monolayer may be constrained within a crystal lattice of adjacent base semiconductor portions, and at least some semiconductor atoms from opposing base semiconductor portions may be chemically bound together through the at least one non-semiconductor monolayer therebetween. The method may further include coupling at least one electrode to the poled superlattice.

RF-optical metamaterials with (±∈, ±μ) figures-of-merit of interest are constructed from coupled magnetic and dielectric multi-resonant multi-disks (finite-size cylinders) or multi-sphere lattices arranged in a periodic or a random fashion to offer tailored magnetic and electric dipole moments. The present metamaterials include embedded particles arrays that provide coupled magnetic and electronic modes equivalent to L (inductor) and C (capacitor) circuit models. Novel arrangements of these dipole modes (L and C) tailor the transfer function to the physics of interest.

Disclosed therein is an electric dipole streamer discharge type lightning conductor, which can gather electric charges in the atmospheric air at one side thereof and generate an electric discharge due to a dielectric breakdown when a potential difference is formed between the electric charges gathered by an electric dipole and the electric charges of the earth so as to emit a great deal of electric charges of the earth toward thunderclouds to thereby induce a thunderbolt.

The invention relates to an electrical sounding method for a whole-region couple source frequency domain, which is used for measuring horizontal electric field components Ey. The electrical sounding method comprises the following steps: (1) arranging a transmission power supply and a power supply dipole; (2) selecting measurement frequency, wherein the sector observation range is as follows: an included angle with a dipole moment direction is 5-85 degrees, and selecting a transmitting and receiving distance dL; arranging a measuring line and a measuring point; (3) arranging and connecting a measurement electrode and a receiver; synchronously measuring the components of the horizontal electric field (Ey) vertical to the dipole moment via multiple paths, and simultaneously recording the measuring point position (relative to the coordinate of the center of the dipole); and (4) storing data and calculating apparent resistivity according to a corresponding formula. The invention is suitable for observing underground electrical distribution in the whole region. Because the invention only needs to measure electric field data on one direction, the invention has wide observation range, high efficiency, low cost and simple equipment, and observed data is slightly affected by static effect. The invention can be used for finding out geologic structure and mineral product distribution or solves the other problems of engineering, hydrology and environment geology.

This invention relates to the controlled two-dimensional structural transition of a dipole monolayer at a metal, semi-conducting or insulating interface. The dipole monolayer consists of objects / molecules with a permanent electric dipole moment. A transition between the structures of the molecular layer can be performed locally and reversibly by applying an electrical field and the structures / patterns can be reversibly switched many times between two different structures / states. Both of the two structures, the ordered and the disordered structures, are intrinsically stable without the presence of the switching electrical field. This controlled switch of the local layer structure can be used to change layer properties (i.e., mechanical, electrical, optical properties). The controlled reversible modifications of the dipole monolayer structures are usable as bit assignments in data storage applications for example.

Piezoelectric fibers include a polypeptide wherein molecules of the polypeptide have electric dipole moments that are aligned such that the piezoelectric fiber provides a piezoelectric effect at an operating temperature. A piezoelectric component provides a plurality of piezoelectric fibers, each comprising an organic polymer. A method of producing piezoelectric fibers includes electrospinning a polymer solution to form a fiber and winding the fiber onto a rotating target in which the rotating target is electrically grounded. An acoustic sensor includes a plurality acoustic transducers, wherein the plurality of acoustic transducers are structured and arranged to detect a corresponding plurality of vector components of an acoustic signal, and at least one of the plurality of acoustic transducers comprises a piezoelectric fiber.

A metamaterial simultaneously exhibiting a relative effective permeability and a relative effective permittivity below unity over a wide bandwidth, including: one of a two-dimensional and a three-dimensional arrangement of unit cells, wherein each of the unit cells has a magnetic dipole moment and an electric dipole moment that are dependent upon one or more of an incident magnetic field and an incident electric field; and a coupling mechanism operable for coupling one or more of the incident magnetic field and the incident electric field to one or more devices. Optionally, the coupling mechanism includes one or more of a split ring and a pair of parallel plates coupled by one of a rod and a wire. The one or more devices are non-Foster elements.

The invention provides a metasurface magnetoelectric dipole antenna. The metasurface magnetoelectric dipole antenna comprises five rectangular dielectric plates, an electric dipole, a magnetic dipole,a pair of short-circuit posts, a metasurface, a feeding structure and two symmetric arc defect-structure reflection ground, wherein the electric dipole is printed above a first layer of dielectric plate, the magnetic dipole is also arranged above the first layer of dielectric plate, the metasurface is embedded into the top of a second layer, the antenna is used for feeding by a stepped feeding structure placed in the center of the electric dipole, and the two symmetric arc defect-structure reflection ground are printed on an upper surface and a lower surface of a fifth dielectric layer. The antenna is designed to a structure of five layers of dielectric plates, and the profile of the antenna can be effectively reduced; and meanwhile, the metasurface material is embedded to the top of thesecond layer, the electric length is effectively reduced by the characteristic of the metasurface, so that the gain of the antenna can be improved, the height of the antenna is reduced, and the low-profile effect of the antenna is achieved.

The invention relates to a method for testing radiation electromagnetic interference noise by using a GTEM chamber. The method is implemented by arranging the equipment to be tested on a turntable of the GTEM chamber, rotating the turntable sequentially along x, y and z dimension to several angles, measuring the x dimension voltage containing radiation electric field information between the core plate and bottom plate of the GTEM chamber when the equipment to be tested rotates to each angle to obtain electric dipole moment and magnetic dipole moment, and the formulae of radiation electric field and radiation magnetic field are obtained via the electric dipole moment and the magnetic dipole moment by using a multi-pole moment model; test distances required by various types of test standards are substituted into the formulae of radiation electric field and radiation magnetic field in step five to obtain the results required by corresponding test standards. In the method, the test data of GTEM chamber are converted into results of various test standards, thus being favorable for judging whether the equipment to be tested can be subject to electromagnetic compatibility test.

The invention provides an electric dipole antenna which includes antenna feelers, and a match circuit and a transmission / reception port, both of which are connected with the antenna feelers. The lengths of the antenna feelers are adjusted through manual operation or an adjustment structure. The invention also provides a use method of the electric dipole antenna. The length of the electric dipole antenna can be adjusted so that the resonance frequency can be adjusted according to the difference of detection objects or difference of positions relative to the detection objects and thus the resonance frequency is at a work frequency. Therefore, a problem that an electric dipole antenna in the prior magnetic resonance system cannot be tuned or the tuning range is small and leads to extra loss is solved. Therefore, the electric dipole antenna is stable in work and applicable to clinical application of a high-field magnetic resonance system.

Provided is a variable-capacitance element wherein a desired capacitance value which corresponds to a write voltage can be freely set and a capacitance value which has been set before is maintained even when there is no write voltage. A method for adjusting the variable-capacitance element, a variable-capacitance device and an electronic apparatus are also provided. In a variable-capacitance element (100), a pair of electrodes (101, 102) are formed with a ferroelectric material layer (103) in between. The variable-capacitance element is adjusted by a step of maximizing or minimizing the sum of electric dipole moments of the ferroelectric material layer (103), and a step of writing a capacitance value by applying a desired write voltage (V) to the electrodes (101, 102) of the variable-capacitance element (100), in which the sum of the electric dipole moments of the ferroelectric material layer (103) is maximized or minimized, so that the variable-capacitance element (100) has a desired capacitance value.

A cellulose composition, contains: a cellulose compound; a compound represented by formula (I); and a low molecular weight compound (A); wherein molecular absorption wavelength of the compound (A) derived from an electric dipole transition moment My in a direction approximately orthogonal to a molecular long axis direction, is longer than that derived from an electric dipole transition moment Mx in a direction approximately parallel to the molecular long axis direction; and wherein |My| is larger than |Mx|: wherein L1 to L4 represent a single bond or a specific divalent linking group; Y1 and Y2 represent an alkyl group; Ra, Rb and Rc represent a substituent; m represents an integer of 0 to 4; t represents an integer of 1 or 2; and m11 and m12 represent an integer of 0 to 10.

The method of use of an ionic liquid and device for sorption of a gas, specifically the invention is used for a device for sorption of a gas having an electric multipole moment and uses of ionic liquid for sorption of the gas. The invention is to provide a method and a device for removing gaseous or steamy components, which can save cost or be cheaper. In particular, the electric multipole moment may be an electric dipole moment and / or an electric quadrupole moment. The sorption may be an adsorption or an absorption. The ionic liquid may be a pure ionic liquid, i.e. a liquid substantially only containing anions and cations, while not containing other components, e.g. water. Alternatively a solution containing the ionic liquid and a solvent or further compound, e.g. water, may be used.

A water solution in which an observation sample is, for example, dissolved is sandwiched on a first insulative thin film side provided under a conductive thin film. When an electron beam incident part is charged minus, electric dipoles of water molecules are arrayed along a potential gradient. Electric charges are also generated on the surface of a second insulative thin film. The electric charges are detected by a terminal section and changes to a measurement signal. In a state in which an electron beam is blocked, the minus potential disappears. Consequently, the electric charges on the surface of the first insulative thin film also disappear, and the measurement signal output from the terminal section changes to 0.