98 results about "Resonant absorption" patented technology

Photocatalytic water splitting is employed as a method to directly obtain clean hydrogen from solar radiation by using hybrid nanoparticles with metallic cores and semiconductor photocatalytic shells. Efficient unassisted overall photocatalytic splitting of water is based on resonant absorption from surface plasmon in metal core / semiconductor shell hybrid nanoparticles, which can extend the absorption spectra further towards the visible-near infrared range, thus dramatically increasing the solar energy conversion efficiency. When used in combination with scintillator nanoparticles, the hybrid photocatalytic nanoparticles can be used for conversion of nuclear energy into hydrogen.

According to one aspect, the invention relates to a microbolometer array for thermal detection of light radiation in a given spectral band, comprising a supporting substrate and an array of microbolometers (300) of given dimensions, arranged in an array. Each of said microbolometers comprises a membrane (301) suspended above said supporting substrate, said membrane consisting of an element (305) for absorbing the incident radiation and a thermometric element (304) in thermal contact with the absorber, electrically insulated from said absorber element. The absorber element comprises at least one first metal / insulator / metal (MIM) structure comprising a multilayer of three superposed films of submicron-order thickness i.e. a first metallic film (311), a dielectric film (310), and a second metallic film (309), said MIM structure being able to have a resonant absorption of said incident radiation at at least one wavelength in said spectral band. The area of the microbolometer pixel covered by said membrane (301) is less than or equal to half of the total area of the microbolometer pixel.

The invention discloses a broadband THz metamaterial absorber based on multi-resonant absorption superposition, belongs to a THz absorber in the field of metamaterials and electromagnetic functional technology, and aimed at that the broadband THz metamaterial absorber includes an upper patterned functional material layer, an intermediate medium layer and a lower metal reflective layer; the upper patterned functional material layer is formed by arranging metamaterial unit structures, each metamaterial unit structure includes a circular ring structure in which four parallel openings and a cross arm are disposed, and four connecting arms of each cross arm are connected with four ARC segments of each circular ring structure; the lattice period of a metamaterial unit structure array is a 10um to 100um, each metamaterial unit structure has a line width of 0.5um to 10um, the arm length x of each connecting arm is 3um to 50um, and the width d of each parallel opening is 0.5um to 50um. The invention does not require complicated procedures, a difficult process and high production cost to achieve the purpose of terahertz absorption band spread.

This invention pertains to the use of spin resonance absorption heating as a therapeutic treatment method wherein electron spin resonance absorption of superparamagnetic (SPM) nanoparticles can be used as an intracellular heating method, more preferably as an in vivo heating method that can be utilized in a variety of therapeutic contexts and can further allow for resonance imaging and internal thermometry.

The present invention relates to a black organic light-emitting diode that implements a resonant absorbing configuration, the black organic light-emitting diode comprising: a glass substrate; a first metal layer formed on the glass substrate; a first electrode formed on the first metal layer; an organic light-emitting layer formed on the first electrode; a second electrode formed on the organic light-emitting layer, opposite the first electrode; a first interlayer formed on the second electrode; a second metal layer formed on the first interlayer; and a second interlayer formed on the second metal layer, wherein by controlling the thickness of the first interlayer and the second interlayer, external light reflected by the first metal layer and the second electrode destructively interferes with light reflected by the second metal layer.

This detector is intended to detect at least one photon and comprises a dielectric substrate (30), of index nO; a detecting element (32) forming a serpentine, placed on the substrate and generating a signal using the energy of the photon(s); a dielectric grating, formed of lines of index nH, alternating with lines of index nB, avec nH>nO and nH>nB, the grating being placed above the detecting element, the set grating-element presenting a resonant absorption in a given incidence and for a given polarisation; and a superstratum (40) having a refractive index ni, this superstratum being placed above the one-dimensional dielectric grating, nH being furthermore greater than ni.

Apparatus and methods for locating a nuclear quadrupole resonance are described. In an example method, a search frequency is adjusted using a blind search until a resonance absorption of an analyte is detected, and then an extremum seeking search to be used to locate an extremum frequency.

The invention relates to a composite resonance sound absorption device of a tube bundle perforated plate, comprising a sealed cavity composed of a perforated plate, a back plate and a lateral plate; the perforated plate is penetrated with superfine seams and voids; a tube bundle is formed by arraying N pieces of tubes which are placed in the sealed cavity, and one end of each tube penetrates intothe perforated plate or is inserted into the perforated plate by a transient joint to be connected with the perforated plate, and the other end thereof is an open or sealed end; the diameter of the tube is equal to that of the void; the external surface of the perforated plate is coated with a layer of porous sound absorption material; and N is less than or equal to the number of 6 of the voids. The invention combines the resonance sound absorption structure, superfine seam sound absorption structure and porous sound absorption material of the tube bundle perforated plate, uses the sound absorption theory of dissipating and absorbing through tube cavity coupling resonance and superfine seam resonance as well as porous sound absorption material to add acoustic resistance, intensify sound absorption, increase sound quality, lead the resonance absorption peak to move to low frequency, expand sound absorption frequency band, enhance sound absorption coefficient and realize the aim of broadband sound absorption.

The present invention relates to one kind of composite nanometer material in a core-shell structure including a dielectric core of nanometer SiO2 microsphere and a metal shell of Cu. The process of preparing the composite nanometer material includes: preparing colloidal SiO2 particle, self-assembling nanometer SiO2 sphere array on quartz chip, preparing composite SiO2 / Cu particle array, and ultrasonic separation to obtain nanometer SiO2 / Cu particle in a core-shell structure monodispersed inside solution. The composite nanometer material has surface plasma resonant absorption peak located in near infrared region, optical property in visible light and near infrared regions adjustable by means of controlling the diameter of the core and the thickness of the shell, blue shift with the increased shell thickness and red shift with increased SiO2 size. The nanometer material may find wide application in photocatalysis, sensor, optical information storing and other fields.

A far infrared (“FIR”) sauna cabin equipped with a far infrared (“FIR”) heating elements constructed of ceramic, carbon, and / or light emitting diodes (“LED”), designed for therapeutic use in a sauna, capable of emitting far infrared energy, and heating an individual's skin for purposes of rejuvenation, anti-aging, weight loss, and acne therapy. The FIR heating element emits IR energy in a wavelength and frequency optimum for resonant absorption by the human body, resulting in the release of toxins stored within subcutaneous fatty deposits, which are then carried out of the person's system as he or she sweats. The FIR sauna cabin is further equipped with necessary hardware and tools to effectively create a more flexible environment in which the user can change seating configurations, move about more freely and conduct stretching routines or exercises within the sauna cabin, using specialized fittings integrated to the interior of the sauna cabin.

An excited state atomic line filter. The present invention solves the problem of lack of ground state resonant lines in at wavelengths substantially longer than those of visible light. Atomic line filters of the Faraday or Voigt crossed polarizer type are provided in which alkali metal atomic vapor in a vapor cell is excited with a pump beam to an intermediate excited state where a resonant absorption line, at a desired wavelength, is available. A magnetic field is applied to the cell producing a polarization rotation for polarized light at wavelengths near the resonant absorption lines. Thus all light is blocked by the cross polarizers except light near one of the spaced apart resonant lines. However, the polarization of light at certain wavelengths near the resonant is rotated in the cell and therefore passes through the output polarizer.

The invention discloses a radiation refrigeration optical filter which comprises a substrate. A single surface of the substrate is polished, a metal reflecting layer is arranged on a rough surface ofthe substrate, and an intermediate layer and a top layer are sequentially arranged on the polished surface of the substrate; the intermediate layer comprises layers A and layers B which are alternately arranged; the thicknesses of each layer A and each layer B are 50-400 nm; the layers A are made of silicon dioxide or aluminum oxide, and the layers B are made of titanium dioxide or silicon nitrideor silicon carbide; alternatively, the layers A are made of titanium dioxide or aluminum oxide, and the layers B are made of silicon dioxide or silicon nitride or silicon carbide; the top layer is made of ytterbium fluoride or yttrium fluoride or zinc sulfide; multi-resonant absorption enhancers in wavebands of atmospheric transparent windows (with the wavebands of 8-13 micrometers) are jointly formed by the intermediate layer and the top layer. Compared with the traditional optical filters, the radiation refrigeration optical filter has the advantages that the radiation refrigeration opticalfilter can work in intense light for a long time, and radiation refrigeration can be passively implemented by the radiation refrigeration optical filter.

A method for performing quartz-enhanced photoacoustic spectroscopy of a gas, includes providing a light source configured to introduce a laser beam having at least one wavelength into the gas such said at least one molecule within in the gas is stimulated generating an acoustic signal, accumulating the acoustic signal in a resonant acoustic detector, generating a resonant absorption signal (SA) relative to the gas concentration by at least one tuning fork serving as resonant acoustic detector, generating additionally a resonant intensity signal (SI) proportional to the intensity of the laser beam travelling through the gas, and providing an output signal (SGC) from said absorption signal (SA) and said intensity signal (SI) being independent of the intensity of the light relative to the presence or concentration of the gas.

The current invention provides a method for improving the sensitivity of bolometric detection by providing improved electromagnetic power / energy absorption. In addition to its role in significantly improving the performance of conventional conducting-film bolometric detection elements, the method suggests application of plasmon resonance absorption for efficient thermal detection and imaging of far-field radiation using the Surface Plasmon Resonance (SPR) and the herein introduced Cavity Plasmone Resonance (CPR) phenomena. The latter offers detection characteristics, including good frequency sensitivity, intrinsic spatial (angular) selectivity without focusing lenses, wide tunability over both infrared and visible light domains, high responsivity and miniaturization capabilities. As compared to SPR, the CPR-type devices offer an increased flexibility over wide ranges of wavelengths, bandwidths, and device dimensions. Both CPR and SPR occur in metallic films, which are characterized by high thermal diffusivity essential for fast bolometric response.

The invention belongs to the technical field of electronic materials, in particular to an electromagnetic wave absorbing structure and a design method thereof. The invention selectively impregnates the fully cured honeycomb pore microwave absorbing slurry, the maximum channel radius of the conductive channel is not only enlarged, so as to avoid the generation of high-order resonant mode in the conductive channel, increase the propagation of the incident wave in the honeycomb hole, improve the resonant absorption of the energy of the incident wave by the structure, greatly enhance the absorption performance of the low frequency, and further reduce the absorption performance of the high frequency; Compared with the traditional honeycomb absorbing structure, the pattern honeycomb absorbing structure has the same absorbing strength and the weight is lighter, and the bandwidth is 2 - 18GHz.

A new approach to graphene-enabled plasmonic resonant structures in the THz is demonstrated in a hybrid graphene-metal design in which the graphene acts as a gate-tunable inductor, and metal acts as a capacitive reservoir for charge accumulation. A large resonant absorption in graphene can be achieved using the metal-graphene plasmonic scheme, and the peak can approach 100% in an optimized device, ideal for graphene-based THz detectors. Using high mobility graphene (μ>50000 cm2V−1s−1) will allow anomalously high resonant THz transmission (near 100%) through ultra-subwavelength graphene-filled metallic apertures at a resonance frequency that is gate tunable. This metal-graphene plasmonic scheme enables near perfect tunable THz filter or modulator.

The invention provides an infrared focal plane array device, which comprises a substrate, a cavity, an infrared sensing layer, a reflecting layer and a cantilever beam, wherein the cavity is positioned in the substrate, the infrared sensing layer is suspended above the cavity, the reflecting layer is arranged at the bottom of the cavity and is opposite to the infrared sensing layer, the cantilever beam is suspended above the substrate, one end of the cantilever beam is fixedly connected with the substrate, the other end of the cantilever beam is fixedly connected with the infrared sensing layer, the substrate around the cavity is a heat sinking element for heat radiation, and the end of the cantilever beam connected with the substrate is connected onto the heat sinking element. Correspondingly, the invention also provides a manufacture method of the infrared focal plane array device. The infrared focal plane array device adopts a resonance absorption structure consisting of the reflecting layer, the infrared sensing layer and the cavity formed between the two layers for improving the absorption efficiency of a detection unit on infrared rays, and the manufacture of the resonance absorption structure is completely compatible with the conventional integrated circuit (IC) process.

The invention relates to a WLP (wafer level package) IRFPA (infrared focal plane array) device and the manufacturing method thereof. The device includes a first substrate and a second substrate, wherein at least a groove is arranged in the first substrate; processing blocking layers cover the inner wall of the groove and the surface of the first substrate; a resonance absorption structure is arranged at the groove mouth of the groove, and includes an infrared absorption layer and a reflective layer; the reflective layer is adjacent to the second substrate; a refracting medium layer is arranged between the infrared absorption layer and the reflective layer; a deformation beam, a thermal insulation beam, a heat dissipation frame body and a getter are sequentially arranged on the outer ring of the resonance absorption structure; the heat dissipation frame body is correspondingly connected and matched with the resonance absorption structure through the thermal insulation beam and the deformation beam; a first substrate solder is arranged on the outer ring of the getter and corresponds to second substrate solder on the second substrate; and the first substrate and the second substrate are fixed and connected into a whole through the first substrate solder and the second substrate solder via vacuum welding. The device provided by the invention has the advantages of compact structure, compatibility with the IC process, high detection precision and convenience for manufacture.

The invention discloses a precious metal nanocrystalline with an adjustable plasma resonance absorption characteristic in a visible wave band and a preparation method of the precious metal nanocrystalline. The precious metal nanocrystalline is a silver-gold nanocrystalline formed by silver and gold and is prepared through a galvanic replacement reaction between silver and chloroauric acid. The preparation method comprises the specific steps that (1), silver nitrate is added into a mixed solution of glycerinum containing a reducing agent and water, and silver nanocrystalline seeds are prepared; and (2), the silver nanocrystalline seeds and a water solution of chloroauric acid are added into a water solution containing a surface active agent, chloroauric acid is reduced into elemental gold through elemental silver, and a silver-gold nanocrystalline solution is obtained. The plasma resonance absorption wave length of the precious metal nanocrystalline is adjustable in the visible wave band (400 nm to 700 nm). The precious metal nanocrystalline with the adjustable plasma resonance absorption characteristic in the visible wave band and the preparation method of the precious metal nanocrystalline have the beneficial effects that the preparation process is simple, the production dispersity is good, the morphology and size are even, and the plasma resonance absorption wave length is adjustable in the visible wave band, and can be widely applied to the fields of bioimaging, drug release, precious metal fluorescence enhancement, surface Raman enhancement and the like.

A far infrared (“FIR”) sauna cabin equipped with a far infrared (“FIR”) heating elements constructed of ceramic, carbon, and / or light emitting diodes (“LED”), designed for therapeutic use in a sauna, capable of emitting far infrared energy, and heating an individual's skin for purposes of rejuvenation, anti-aging, weight loss, and acne therapy. The FIR heating element emits IR energy in a wavelength and frequency optimum for resonant absorption by the human body, resulting in the release of toxins stored within subcutaneous fatty deposits, which are then carried out of the person's system as he or she sweats. The FIR sauna is operated by a system comprising a local control system and a remote computer running access control software. A user account is configured containing a user's allowed privileges. When a user swipes an access card, the remote computer verifies the requested privilege. If allowed, the local system energizes the sauna system.

The invention relates to a monodisperse 3D pentacle gold nanoparticle that has substantial surface plasma resonance absorption property and surface enhanced Raman effect, and a preparation method thereof. The pentacle gold nanoparticle has the characteristics of uniform scale and good dispersibility, and the size of the product is between 40-60 nanometer and can be regulated and controlled effectively. The preparation comprises the following steps: 1. Add poly diallyl dimethyl ammonium chloride, auric chloride acid, ascorbic acid and gold nanometer decahedron colloidal solution into glycol solution in order in order while stirring; 2. Put the reaction precursor solution for 0.5-4 hour in the temperature between 0-100 DEG C, then perform centrifugation for 10-100 minutes at a 5000-15000 rev / min; 3. Clean the blue deposition product by asolvent with ultrasonic to obtain the monodisperse pentacle gold nanoparticle. The pentacle gold nanoparticle in the invention has important application value in photocatalysis, plasma optical, chemical and biology sensing, solar energy cell and surface enhanced Raman scattering (SERS) etc.

A tracking system utilizing an excited state atomic line filter. The filter includes a metal vapor cell having an optical entrance port and an optical exit port and containing a metal vapor having a first excited energy state with a resonant frequency, and a second excited energy state. The cell has an absorption line, at or near a desired filter wavelength. The platform to be tracked, which could be an un-manned aerial vehicle has a beacon laser system located on it for producing a beacon laser beam at a wavelength within the narrow spectral band. The present invention solves the problem of lack of ground state resonant lines in at wavelengths substantially longer than those of visible light. Atomic line filters of the Faraday or Voigt crossed polarizer type are provided in which alkali metal atomic vapor in a vapor cell is excited with a pump beam to an intermediate excited state where a resonant absorption line, at a desired wavelength, is available. A magnetic field is applied to the cell producing a polarization rotation for polarized light at wavelengths near the resonant absorption lines. Thus, all light is blocked by the cross polarizers except light near one of the spaced apart resonant lines. However, the polarization of light at certain wavelengths near the resonant is rotated in the cell and therefore passes through the output polarizer.

The invention discloses a multi-resonance absorption zirconium-doped barium ferrite broadband wave-absorbing material having an expression formula of xBaZr[n]Fe[12-n]O[19]+(1-x)BaZr[m]Fe[12-m]O[19], wherein x is 0.1-0.9, n is 0.1-0.2, m is 0.3-0.5, and m is not equal to n. A preparation process comprises the steps: preparing a BaZr[n]Fe[12-n]O[19] powder; preparing a BaZr[m]Fe[12-m]O[19] powder; and then mixing and grinding the BaZr[n]Fe[12-n]O[19] powder and the BaZr[m]Fe[12-m]O[19] powder. A composite system is formed by the materials having different intrinsic parameter peak values, intrinsic parameters in the formed wave-absorbing system have corresponding different characteristic resonance frequencies, the appearing range of the resonance frequency of the composite material is greater than the appearing ranges of the own resonance frequencies of the compositing single-phase materials. The wave-absorbing material can be widely applied to the corresponding electromagnetic protection and microwave stealth fields.

The device is composed of congeneric signal generator, radio frequency power amplifier, phase-lock amplifier, computer, step up transformer of confinement field, linetype ion trap, earthing, terminal and coupling capacity. The method uses phase-lock amplifier to replace narrow band amplifier used on the existing detection device and uses one oscillation source signal to work out three signal in different frequency with the same source.

A photonic detector, a photonic imaging system and a method of photonic detection employ plasmonic resonant absorption to detect an incident electromagnetic signal. The photonic detector and imaging system include a micro / nanoshell (MNS) structure that supports a surface plasmon and a rectifying junction that rectifies an evanescent electric field of the surface plasmon. The surface plasmon is excited by the incident electromagnetic signal at a plasmonic resonant absorption wavelength of the MNS structure. The method of photonic detection includes providing an MNS structure, exciting a surface plasmon on the MNS structure and rectifying an evanescent electric field of the excited surface plasmon to produce a rectified output signal. The rectified output signal provides detection of the incident electromagnetic signal.

The invention provides a photoluminescent device comprising a light-emitting substrate and a plurality of metal micro-nano structures disposed on the light-emitting substrate. The metal micro-nano structures are cylindrical or rectangular or square. Surface plasma wave produced by the metal micro-nano structures and wave produced by light-emitting material of the light-emitting substrate have resonant absorption effect, so that energy of the surface plasma wave is transferred to the light-emitting material, fluorescence of the light-emitting material is enhanced, and lighting efficiency of the photoluminescent device is increased. The invention further provides a production method of the photoluminescent device.