42results about How to "Strong resonance" patented technology

Embodiments of the disclosure include an apparatus and methods for using a piezoelectric device, that includes an outer flextensional casing, a first cell and a last cell serially coupled to each other and coupled to the outer flextensional casing such that each cell having a flextensional cell structure and each cell receives an input force and provides an output force that is amplified based on the input force. The apparatus further includes a piezoelectric stack coupled to each cell such that the piezoelectric stack of each cell provides piezoelectric energy based on the output force for each cell. Further, the last cell receives an input force that is the output force from the first cell and the last cell provides an output apparatus force In addition, the piezoelectric energy harvested is based on the output apparatus force. Moreover, the apparatus provides displacement based on the output apparatus force.

The invention relates to an antenna in which the radiators are conductor coatings of a dielectric substrate chip (210). There are two radiators (220, 230), and they are of the same size and symmetrical so that each covers one of the opposite heads of a rectangular substrate chip and part of the upper surface. In the middle of the upper surface between the elements there remains a slot (260), over which the elements have an electromagnetic coupling with each other. The chip component (201) is mounted on a circuit board (PCB), the conductor pattern of which is part of the whole antenna structure. There is no ground plane (GND) under the chip or on its sides up to a certain distance (s). The lower edge of one radiator (220) is galvanically coupled to the antenna feed conductor on the circuit board, and at another point to the ground plane, whereas the lower edge of the opposite, parasitic radiator (230) is galvanically coupled only to the ground plane. The parasitic radiator gets its feed through said electromagnetic coupling, and both elements resonate equally strongly at the operating frequency. The antenna is tuned and matched without discrete components by changing the width (d) between the radiating elements and by shaping the conductor pattern of the circuit board near the chip component. The efficiency of the antenna is good in spite of the dielectric substrate, and its omnidirectional radiation is excellent.

A mixer includes: a magnetoresistive effect element including a fixed magnetic layer, a free magnetic layer, and a nonmagnetic spacer layer disposed between the fixed magnetic layer and the free magnetic layer; and a magnetic field applying unit that applies a magnetic field to the free magnetic layer. The mixer is operable, when a first high-frequency signal and a second high-frequency signal as a local signal are inputted, to multiply the first high-frequency signal and the second high-frequency signal using the magnetoresistive effect element and to generate a multiplication signal. A frequency converting apparatus includes the mixer and a filter operable, when a higher frequency and a lower frequency out of frequencies of the first high-frequency signal and the second high-frequency signal are expressed as f1 and f2 respectively, to pass one out of a frequency (f1+f2) and a frequency (f1-f2) out of the multiplication signal.

The invention discloses a Bragg grating biochemical sensor at interface of a fiber core and a cladding and a method. The Bragg grating biochemical sensor at the interface of the fiber core and the cladding comprises the fiber core and the fiber cladding wrapping the fiber core, and is characterized in that the front segment of the fiber core is provided with a long-period fiber grating, the middle segment of the fiber is provided with a Bragg grating at the interface of the fiber core and the cladding; the Bragg grating at the interface of the fiber core and the cladding is composed of a plurality of linear grooves or point-like grooves; the linear grooves or the point-like grooves are periodically distributed along the axial direction of the fiber; and the external surface of the fiber cladding corresponding to the Bragg grating at the interface of the fiber core and the cladding is provided with a silane layer through adsorption. The technical scheme is widely applicable to fields such as biology, chemical engineering, medical science, life science and the like.

The invention discloses a porous-alumina-based visible near infrared broadband absorber. The porous-alumina-based visible near infrared broadband absorber includes a substrate, wherein a high-low refractive index medium anti-reflection film system is arranged on the front side of the substrate; a bipass porous alumina template is arranged on the back side of the substrate; and the porous alumina template is covered by a metal thin film. The invention also discloses a preparation method of the above absorber. The porous-alumina-based visible near infrared broadband absorber and the preparation method thereof utilize the porous alumina template and use the layer of thin high absorbability metal structure covered on the porous alumina to realize strong resonance between the medium and the metal on the bottom surface and the side wall of the porous alumina holes so as to realize absorption of visible near infrared wave band broadband. The porous-alumina-based visible near infrared broadband absorber has the advantages of being simple in structure, being simple and convenient in preparation, being low in cost, being convenient for mass and batched production. Therefore, the porous-alumina-based visible near infrared broadband absorber is expected to be widely applied to the fields of elimination of stray light, space detection, imaging, photo-thermal conversion and electromagnetic absorption.

The invention belongs to the technical field of biosensing systems, and especially relates to an elasto-optic modulation polarization imaging biosensing system of a double-cycle nanopore chip. A beamexpanding collimation module, a 45-degree polarizer, an elasto-optical modulator, a double-period nanopore biosensor chip, a-45-degree analyzer and a CCD imaging detector are sequentially arranged onone side of the detection laser light source. The CCD imaging detector is connected with the control computer and a elasto-optical modulator driving controller; the control computer is connected withthe elasto-optical modulator driving controller, the detection laser light source is connected with a programmable control pulse generator, the programmable control pulse generator is connected with the elasto-optical modulator driving controller, and the elasto-optical modulator driving controller is connected with the elasto-optical modulator. According to the invention, real-time polarization imaging detection of the double-cycle nanopore array is realized, and in-situ, rapid, real-time, non-labeled, high-precision, high-sensitivity, multi-channel and high-flux sensing measurement of biomolecules is realized. The biosensor is used for biosensing measurement.

The invention discloses a solution organic light emitting diode based on a silver nanocube, comprising a sequentially laminated anode, a hole transport layer, a light emitting layer containing silvernanocube, an electron transport layer, and a cathode. The invention also discloses a preparation method of a solution organic light emitting diode based on silver nanocube: firstly, the ITO glass substrate is thoroughly cleaned, then a hole transport layer is spin-coated to prepare the hole transport layer, the hole transport layer comprises a silver nanocube light emitting layer, and then an electron transport layer and a metal electrode are sequentially prepared by evaporation in vacuum. The invention has the advantages that the silver nano cube is dispersed in the light emitting layer, theluminous efficiency of the organic light emitting diode is effectively improved by utilizing the plasma resonance effect of the silver nano cube, the preparation method is simple and easy, and has potential application value.

The invention discloses a preparation method of a multi-layer metal nanometer structure based on a two-dimensional material, and belongs to the field of novel nanometer structure machining. The preparation process of the multi-layer metal nanometer structure mainly comprises the following four steps that (1) an ultra-thin AAO template is transferred to a substrate which is already subjected to hydrophilic treatment; (2) metal is uniformly deposited into a hole of the AAO template according to a sputtering method; (3) the AAO template on the substrate is removed by a tape in a sticking mode, one layer of h-BN is transferred onto the substrate, and then a layer of ultra-thin AAO template is transferred onto the h-BN; and (4) the substrate is placed in sputtering equipment to deposit a layerof metal again, the AAO template is removed, and the third step and the fourth step are repeated to carry out the next-layer nano-particle deposition. The preparation method is simple in process, lowin cost, strong in process repeatability and good in process parameter control. A multi-layer metal nanostructure array with periodicity can be prepared in a large area.

The embodiment of the invention relates to the field of communication, and discloses an information sharing method, electronic equipment and a storage medium. The information sharing method comprisesthe steps of receiving a sharing request carrying to-be-shared content; in response to the sharing request, obtaining to-be-shared work information of the to-be-shared content; determining target sharing content based on the to-be-shared work information and pre-stored checked work information of a shared user; and generating a target sharing page based on the target sharing content. The target sharing content is determined according to the to-be-shared work information and the checked work information of the shared user, and the target sharing page is generated, so that the personalized sharing effect of information sharing is achieved, and the sharing experience of the user is improved.

A method for implementing an orchestral resonance instrument with a bass extension effect is designed for solving problems that an existing national bass string instrument is slow in audio vibration, low in volume and dull in tone and a western violin is extremely inharmonious with the style of national music. A stem is designed to be in the shape of a hollow tube and is used as an auxiliary resonance cavity for a barrel which is used as a main resonance cavity, a membrane is a mocking leather membrane, at least six metal strings are uniformly distributed on the tubular stem and the barrel by means of drawing a bow, so that the main resonance cavity and the auxiliary resonance cavity realize a stereoscopic resonance effect, and audio is further filtered by the aid of a loudspeaker opening on the surface of the main resonance cavity and a loudspeaker opening on the surface of the auxiliary resonance cavity. The method for implementing the orchestral resonance instrument with a bass extension effect has the advantages that modern instrumental acoustic theories are applied on the basis of the resonance characteristics of the traditional string instrument, single structures in which a traditional bass Chinese fiddle and a Ke-hu which are used as resonance cavities are fundamentally changed, the stereoscopic resonance effect which is generated by the barrel used as the main circular resonance cavity and the tubular stem used as the auxiliary resonance cavity is highlighted, the audio of the instrument is further filtered by the aid of the loudspeaker opening of the surface of the barrel and the loudspeaker opening on the surface of the hollow stem, noise and murmur are effectively eliminated, and the tone quality, the volume and the tone are more balanced and melodious assuredly.

The invention relates to a cavity filter and a cavity duplexer. The cavity filter comprises a first cavity shell, a second cavity shell, a coupling channel and a cover plate, wherein a first resonant cavity is formed in the first cavity shell; a second resonant cavity is formed in the second cavity shell; the coupling channel is used for communicating the first resonant cavity with the second resonant cavity; the cover plate is used for sealing the first resonant cavity and the second resonant cavity; an input port communicated with the first resonant cavity is formed in the first cavity shell; an output port communicated with the second resonant cavity is formed in the second cavity shell; and the first cavity shell is arranged on the second cavity shell, and an inclined angle alpha is formed between the first cavity shell and the second cavity shell, wherein alpha is greater than or equal to 0 degrees and less than or equal to 180 degrees. The inclined angle is formed between the first cavity shell and the second cavity shell, so that a foldable structure is formed; the first cavity shell and the second cavity shell are not arranged on the same plane, so that the planar occupied area is reduced; the cavity shells can be even molded with a machine case or other modules together, so that the system integration can be implemented conveniently, the space can be fully utilized, and the miniaturization of the system can be facilitated; compared with the conventional basic-mode cavity filter, the cavity filter provided by the invention is less in resonant cavities and higher in resonance property; and the planar occupied area of the cavity filter can be even reduced by more than 50%.

The invention discloses a dual-frequency-band circular concentric-square-shaped left-handed material unit, and relates to the field of wireless communication; the dual-frequency-band circular concentric-square-shaped left-handed material unit comprises a dielectric plate (4) and a circular concentric-square-shaped patch (5) printed on the dielectric plate (4), wherein the circular concentric-square-shaped patch (5) is composed of two outer semicircles, two inner semicircles and a micro-strip line (3) passing through the circle center; the two outer semicircles are arranged up and down, and thetwo inner semicircles are rotated by 90 degrees around the center of a circle relative to the outer semicircles, and are arranged in a left-right manner; and two symmetric ground gaps are formed between the two outer semicircles, and four symmetric ground gaps are formed between the two inner semicircles and the micro-strip line. The dual-frequency-band circular concentric-square-shaped left-handed material unit is simple in structure, easy to implement and low in cost.

The invention provides an improved structure of a pillow qin, comprising a base, a sound box, a peg box, a bridge and strings, the sound box is installed on the base, a peg box is arranged on the right side of the sound box, and the sound column There is a piano bridge vertically on the left side of the speaker panel, and a horizontal corresponding sound hole is provided on the speaker panel. The two sides of the speaker panel are vertically glued to the bottom plate with a string nut, and one end of the string is fixed on the left side of the speaker. On the string hole in the upper part, the other end of the string crosses the top of the bridge and is fixed on the peg in the peg box on the right side of the sound box. 3.5cm, the bridge described is a combined bridge, which is composed of four separate bridges. The pillow piano with this structure has beautiful and bright timbre, increased volume and wider range, and is easy to play. Freedom of features.

The invention discloses a light-emitting diode. A single-period reflector group, an active region, and a metal electrode are sequentially stacked from top to bottom. The single-period reflector group includes a transparent medium thin layer and a metal nano-thin layer. The active area includes a quantum well and metal nanoparticles with a wrapping layer located above the quantum wells, and the metal nanoparticles with a wrapping layer include metal nanoparticles and a wrapping layer. In the present invention, by optimizing the thickness of the active region and the distance between the metal nanoparticles and the single-period reflector structure, the optimization and improvement of the luminous efficiency of a specific waveband can be realized.

The present invention provides a resonance sound control device which can achieve middle resonance state in an electronic piano. The electronic piano includes plural keys and a sound source device (6)that emits a sound by pressing of the key, an intermediary resonance state of a resonance sound can be reproduced by including a resonance circuit (11) that inputs a sound source from the sound source device corresponding to the each key and outputs a resonance sound, a position detection sensor (SW) in which plural switches close sequentially according to a key pressing state of the key, and a resonance sound control device (10) that controls the resonance sound by an open/close state of plural switches by the position detection sensor (SW).