91 results about "Nano antenna" patented technology

The invention discloses a frequency and polarization decoupling-based multi-time phase metasurface holographic method, and belongs to the field of micro-nano holography. Comprising the following steps: generating a random phase hologram, multiplying the random phase hologram by a multiple K to obtain n different K-time phase holograms, calculating a mean square error of an output image and a label, performing phase optimization on the random phase hologram through an adaptive moment estimation algorithm, multiplying an obtained basic phase # imgabs0 # by n multiples K, and performing phase optimization on the obtained basic phase # imgabs0 #; n optimized multiple phases # imgabs 1 # are obtained, and the optimized multiple phases are matched through a frequency lambda 1 and a crossed circular polarization channel to obtain a phase phi; and scanning the length and width of each nano antenna column of the frequency lambda 1 in the crossed circular polarization channel and the frequency lambda 2 in the online polarization channel, determining complex amplitude modulation characteristics of the nano antenna columns for different frequencies and polarization, and obtaining corresponding phase distribution. Designing multiple phase metasurface holography based on frequency and polarization decoupling; the energy conversion efficiency can be improved, and the flexibility of multi-phase holographic modulation is also improved through different polarization and frequency combinations.

The present invention relates to a nanodrone, a method of operating a nanodrone, and a system for operating a nanodrone. The nanodrone comprises a substrate extending perpendicular to a normal direction and two or more nanoantennas arranged on and / or in the substrate. Each of the two or more nanoantennas exhibits an optically addressable resonance at a respective resonance wavelength. The two or more nanoantennas comprise a first nanoantenna and a second nanoantenna, each being configured to scatter circularly polarized light at the respective resonance wavelength that is incident on the nanoantenna along the normal direction such that photons of the scattered light have a mean wavevector (I) and (II) in a plane perpendicular to the normal direction for left- and right-circularly polarized light, respectively, with i=1 for the first nanoantenna and i=2 for the second nanoantenna. The mean wavevector (III) with ji=L or R is non-zero. The mean wavevector (IV) with (V) for ji=R and (VI) for ji=L is substantially zero or substantially anti-parallel to (III). At least one of (VII) and (VIII) is substantially parallel or substantially anti-parallel to one of (IX) and (X).

The compact reconfigurable polarization converter is characterized in that the compact reconfigurable polarization converter comprises a ridge-type silicon waveguide, and the upper surface of the ridge part of the ridge-type silicon waveguide is provided with a periodic sub-wavelength nano grating structure which is used for regulating and controlling the effective refractive index of transverse electric wave and transverse magnetic wave modes and has an inclination angle; the nanometer grating structure is made of Sb2Sb3 or Sb2S3 phase change materials, the nanometer grating structure is composed of a plurality of nanometer antennas which are the same in size and shape and parallel to one another, gaps of the nanometer grating structure are filled with SiO2 materials, an Al2O layer and a graphene heating layer are sequentially arranged on the upper surface of the nanometer grating structure and the upper surface of the SiO2 filling materials from bottom to top, and the graphene heating layer is arranged on the lower surface of the nanometer grating structure. And metal electrode palladium gold is arranged on the upper surface of the graphene heating layer and located on the two sides of the flat plate part of the ridge-type silicon waveguide. The device has the advantages that the function is reconfigurable, the size is smaller, the broadband is wider, and the power consumption is lower.

The multi-phase metasurface holography method based on frequency and polarization decoupling belongs to the field of micro-nano holography. It includes the following steps: generating random phase holograms, multiplying them by a factor K to obtain n different K-fold phase holograms, calculating the mean square error of the output image and label, optimizing the phase of the random phase holograms using an adaptive moment estimation algorithm, multiplying the obtained basic phase by n factors K to obtain n optimized multi-phases, and matching the optimized multi-phases with frequency λ1 and a cross-circular polarization channel to obtain a phase φ; scanning the length and width of each nano-antenna column in the cross-circular polarization channel and the linear polarization channel with frequency λ2 to determine the complex amplitude modulation characteristics of the nano-antenna columns for different frequencies and polarizations, obtaining the corresponding phase distribution. This design of multi-phase metasurface holography based on frequency and polarization decoupling can improve energy conversion efficiency, and different combinations of polarization and frequency also enhance the flexibility of multi-phase holographic modulation.

The invention relates to a color router for photon momentum control and a preparation method thereof. The color router is composed of a metal nano antenna, a carbon nano tube film and a printed circuit board. When an electron beam excites the edge of the metal nano antenna, green light and red light components emitted by a far field are distributed along different propagation directions, and when an impact position is located at the center, a non-split pattern is generated. In addition, the conversion of the characteristic radiation direction can be triggered by controlling the electron beam excitation position. The active modulation of the dichroic photon splitting can be effectively realized by adjusting the excitation position and changing the far-field interference of the dipole moment and the quadrupole moment. According to the invention, a pleasant platform is provided for controlling the photon momentum on the nanoscale, and a way is laid for the quantum information technology and the integrated photon system in the future.

The present invention has: a flat plate-shaped phosphor portion including a phosphor excited by excitation light to emit fluorescence; a first nano antenna group including a plurality of metal first nano antennas disposed on a lower surface side of the phosphor portion and each arranged at a first period; a translucent body including a translucent material embedded between each adjacent first nanoantennas and formed on a lower surface of the phosphor portion so as to cover the lower surface of the phosphor portion; and a second nano antenna group including a plurality of metal second nano antennas disposed on the upper surface of the phosphor portion and each disposed on the upper surface of the phosphor portion at a second period.

The invention provides a biological immunodetection method based on an LEDs light-emitting chip, and solves the technical problems of high instrument cost, relatively tedious operation steps and low sensitivity in the existing immunodetection technology. The method comprises the following steps: preparing an LED light-emitting chip substrate modified by a characteristic antibody and gold nanoparticles modified by the characteristic antibody, and dropwise adding a biomarker to be detected and the gold nanoparticles on the LED light-emitting chip substrate to form a double-antibody sandwich structure. The gold particles adsorbed on the substrate of the LEDs light-emitting chip are used as resonant nano antennas, surface plasmon transmitted on the light-emitting chip is converted into a local surface plasmon mode, the local surface plasmon mode is effectively and outwards coupled and radiated to a far field, and a bright point is presented at the adsorbed gold nano particles, so that the light-emitting effect of the LED light-emitting chip is greatly improved, and the service life of the LED light-emitting chip is prolonged. And calculating the number of the gold nanoparticles under a microscope to obtain a detection result. The method can be used for quantitative detection of biomarkers, and is convenient for detection, low in cost, good in visibility and high in detection sensitivity.

This invention discloses a tunable nanoantenna and its fabrication method, belonging to the field of nanoantenna technology. The tunable nanoantenna comprises, from top to bottom: an ordered metal mesh nanoelectrode layer, Fe... 3 O 4 The invention comprises a magnetic nanosphere layer, a silicon nanopillar micro / nanostructure layer, a substrate layer, and a lower electrode layer. This invention proposes a tunable nanoantenna and its fabrication method. Specifically, this invention combines silicon nanopillars with Fe... 3 O 4 By combining magnetic nanospheres and utilizing their synergistic effect, a composite nanoantenna with magnetic response and optical resonance characteristics can be constructed. This not only breaks through the limitations of single-material control, but also enables more flexible performance control through the dual effects of magnetic and optical fields.

The invention discloses a full-space switchable nanoimprint and holographic display method based on a metasurface, and belongs to the field of micro-nano optics and holographic display. According to the metasurface-based full-space switchable nanoimprint and holographic display method, the metasurface used for achieving full-space switchable nanoimprint and holographic display is composed of nano antennas of different geometric dimensions, and the geometric dimensions and the arrangement mode of the metasurface are determined through an amplitude constrained phase holographic optimization algorithm; the amplitude distribution of the light field passing through the metasurface is restrained into binary image distribution in a real space, and holographic reconstruction is carried out in a wave vector k space. According to the sensitivity of the metasurface to the wavelength of incident light, three different optical modulation modes are realized under three wavelengths; the wavelength sensitivity of the metasurface is utilized to modulate a reflected light beam and a transmitted light beam under different incident light wavelengths, so that full-space switchable nanoimprint and holographic display are realized, and the metasurface can be applied to the fields of optical nanoimprint, counterfeiting prevention, optical switches, optical communication, display and the like.

A wavelength conversion device includes a phosphor member and a plurality of nanoantennas. The phosphor member has one surface on which an excitation light is incident, includes a phosphor excited by the excitation light to emit a fluorescence, and has an uneven structure on another surface in an opposite side of the one surface. The uneven structure includes a plurality of projecting portions each provided in one direction along the other surface at a pitch smaller than a peak wavelength of the fluorescence. The plurality of nanoantennas are provided at upper surfaces of the plurality of projecting portions and made of a metal material.

A biosensor that is configured to be implanted into a living being includes a light source configured to generate source light with a source light spectrum. The biosensor also includes plasmonic nano-antenna optically coupled to the light source to receive the source light and to emit light therefrom exhibiting a spectral signature of the plasmonic nano¬antenna. A bio-functionalized element joined to the plasmonic nano-antenna can receive a biomarker if available and effect a change in the spectral signature as a function of receipt or nonreceipt of the biomarker. A combination of the light source and nano-antenna can encode an optical communication signal into the emitted light and transmit the signal to a separate communication node. An optional detector can detect the emitted light and provide output indicative of receipt or nonreceipt of the biomarker, which can in turn be encoded into the communication signal for reporting to another node.

The invention belongs to the technical field of quantum tunneling, and provides a tunneling structure and a photonic device.The tunneling structure comprises an antenna layer, a first conductive layer, an insulating layer, a second conductive layer and a substrate layer, and the antenna layer, the first conductive layer, the insulating layer, the second conductive layer and the substrate layer are sequentially stacked in the first direction; the antenna layer comprises one or more antenna units stacked on the first conductive layer; the first conductive layer and / or the second conductive layer are / is provided with at least one hole structure, and in the first direction, the projection of each antenna unit on the first conductive layer or the second conductive layer spans and covers the two sides of an orifice contour line of the hole structure. The invention aims to solve the technical problem that the external quantum efficiency is reduced due to destructive interference caused by symmetrical excitation of a tunneling structure in the prior art, and prevents metal bulges from being introduced on a nano antenna and playing a role of a tunneling metal layer at the same time.

The invention provides a gas sensor comprising an optically transparent substrate (100); an array of nanoantennae (200) being disposed on the optically transparent substrate (100); and a metal-organic framework hybridised with a polymer being integrated into the gas sensor; wherein the nanoantennae (200) are configured as dark-bright mode coupling antennae with one or more nanogaps being formed adjacent to one or more hotspots of the nanoantennae (200) in bright mode.

Concepts directed to multi-modal bio-interfacing devices and methods for fabricating and implementing the same are described. In one example, a device for bio-interfacing applications includes a multi-modal bio-interfacing structure formed on a substrate. The multi-modal bio-interfacing structure includes a microelectrode pad formed on the substrate and a micropillar electrode extending from the microelectrode pad. The multi-modal bio-interfacing structure further includes a plurality of nanoantennas formed on the micropillar electrode.

The present invention has: a flat plate-shaped phosphor part including a phosphor that is excited by excitation light and emits fluorescence; and a plurality of nanoantennas that are provided so as to form a grid-shaped array pattern in each of a plurality of regions on one surface in a plan view seen from a direction perpendicular to the surface of the phosphor part, and that are constituted from a metal material or a dielectric material, the array pattern of the plurality of nanoantennas in one region among the plurality of regions being a pattern obtained by rotating the array pattern of the plurality of nanoantennas in another region about an axis perpendicular to a single plane.

The invention discloses a spectrum sensor based on an ultra-narrow band surface outer surface lattice resonance mode and application thereof.The spectrum sensor comprises a substrate, a dielectric grating located on the upper surface of the substrate and a V-shaped metal nanometer antenna array covering the upper surface of the dielectric grating, the top end of the dielectric grating is triangular, and the top end of the dielectric grating is triangular. A metal nano antenna in the V-shaped metal nano antenna array is of an asymmetric V-shaped structure with two arms different in length, coherent coupling between out-of-plane dipoles in the V-shaped metal nano antenna array finally forms an out-of-plane SLR mode, and the spectrum sensor based on the ultra-narrow-band out-of-plane SLR mode is high in quality factor and wide in application prospect.

The purpose of the present invention is to provide: a wavelength conversion member with which a lighting device having a narrow-angle light distribution, high output, and low color unevenness can be configured; and a lighting device using the same.　This wavelength conversion member is characterized by comprising a flat plate-shaped phosphor member including a phosphor that is excited by excitation light to emit fluorescence, a reflection member that is provided on a side surface of the phosphor member and reflects the excitation light and the fluorescence, and a plurality of nanoantennas that are provided on one main surface of the phosphor member and comprise a metallic material or a dielectric material, wherein: the plurality of nanoantennas include a first nanoantenna group arranged in a lattice shape with a first arrangement period and a second nanoantenna group arranged in a lattice shape with a second arrangement period, the first arrangement period being a period corresponding to a first wavelength included in the wavelength range of the excitation light and the fluorescence, the second arrangement period being a period corresponding to a second wavelength included in the wavelength range of the excitation light and the fluorescence; in terms of the intensity ratio of light emitted in a predetermined angular range around a direction perpendicular to the main surface from a first region where the first nanoantenna group is formed in the phosphor member, light of the first wavelength is greater than light of the second wavelength; and in terms of the intensity ratio of light emitted in a predetermined angular range around a direction perpendicular to the main surface from a second region where the second nanoantenna group is formed in the phosphor member, light of the second wavelength is greater than light of the first wavelength.

To provide a wavelength conversion device and a lighting device which can suppress the generation of color unevenness in light emitted through nano antennas.SOLUTION: A lighting device includes: a tabular phosphor part having a phosphor; a dielectric multilayer film which is formed on one surface of the phosphor part and which is configurated in a manner to reflect a fluorescent component in a part of a wavelength region of fluorescence emitted by the phosphor; and a plurality of nano antennas periodically provided on the dielectric multilayer film.SELECTED DRAWING: Figure 2

To provide a two-dimensional photonic integrated circuit optical phased array for imaging systems.SOLUTION: Aspects of the disclosure provide a device and a method for capturing one or more images using a photonic integrated circuit (PIC) optical phased array (OPA) based imaging system. The method may include processing the environmentally or artificially lit received image using one or more injected control wavelengths or wavefronts to enable electronic control of functions such as real time color filtering, glint removal or other intensity image manipulation, image stabilization, collection of multiple images for panoramic composites, focal plane adjustment and / or other image optimization manipulations based on user input. These system level functions may be accomplished with a device utilizing a plurality of optical nano-antenna elements, a plurality of phase and amplitude modulators, a plurality of measurement photodiodes and a plurality of other associated photonic constructs along with one or more CMOS processors to process the received image.SELECTED DRAWING: Figure 6

The present invention discloses a reflective optical phased array chip, a manufacturing method and a laser scanning device, comprising: a substrate, a high reflective layer, a piezoelectric layer, an antenna array and a transducer unit; wherein the high reflective layer is arranged between the substrate and the piezoelectric layer; the antenna array comprises a plurality of nano-antenna elements, and the plurality of nano-antenna elements are arranged on the piezoelectric layer in a periodic pattern; the height of the nano-antenna element is adjustable to change the phase of the antenna array; the transducer unit is arranged on the piezoelectric layer and arranged around the antenna array. The phased array chip of the present invention is provided with a piezoelectric layer, and an antenna array formed by arranging a plurality of nano-antenna elements on the piezoelectric layer is provided. The emission phase of the antenna array is adjusted by adjusting the height of the nano-antenna element. When the light beam is directly incident on the antenna array, the light beam can be controlled, and the structure is simple and the flexibility is good.

We utilize high-quality-factor (high-Q) metasurfaces patterned either in or adjacent to electro-optical or thermo-optical materials such as lithium niobate, barium titanate, or thermally-sensitive polymers. The metasurface includes nanoantennas that act as dipole emitters; the particular structure and arrangement of nanoantennas can steer light to particular directions or focus light, The electromagnetic metasurface supports one or more guided mode resonances. The metasurface also includes a perturbation superposed on the metasurface features and configured to couple free-space radiation to the guided mode resonances.

The application belongs to the technical field of single molecule detection and nanobiological sensing, and specifically provides a molecular structure change detection system and method based on photoelectric time sequence regulation, which comprises: a solid-state nanopore for forming a channel through which a to-be-detected molecule passes; a silicon carbide light-emitting device for generating an adjustable pulsed light signal; a gold nanoantenna array for gathering the adjustable pulsed light signal and generating a local plasmonic resonance field in a nanopore region; an electrode assembly for applying an adjustable bias electric field and detecting an ion current pulse signal caused by a to-be-detected molecular structure change; a time sequence control module for forming a photoelectric time interlocking identification window in the solid-state nanopore region; and a signal acquisition and analysis module for completing molecular structure change detection based on the identification window. Any reaction process accompanied by local dipole moment, spatial structure or electronic state change can generate identifiable current pulse characteristics through the system of the application, so that dynamic monitoring and accurate discrimination at a single molecule level can be realized.

The wavelength conversion device has a phosphor member having one surface on which excitation light is incident, containing a phosphor that emits fluorescent light when excited by the excitation light, and having an uneven structure on the other surface opposite to the one surface, the uneven structure including a plurality of protruding portions, and a plurality of nano-antennas disposed on the other surface, the plurality of protruding portions disposed in the first direction at a period smaller than a peak wavelength of fluorescence along the other surface, and the plurality of nano-antennas being made of a metal member disposed on upper surfaces of the plurality of protruding portions.

Plasmonic biosensor device comprising a first and second electrode, a charge carrier tunnelling junction for providing charge carriers for generating electroluminescent light emission, that is in electrical connection with the first and second electrodes for application of a voltage potential difference. The second electrode comprises or forms a plasmonic structure including a plurality of optical nanoantennas or a plurality of electrically interconnected optical nanoantennas configured to generate plasmons and light emission via the charge carriers provided by charge carrier tunneling in the charge carrier tunnelling junction. The plurality of optical nanoantennas extend thereon.

The invention relates to a multifunctional nano antenna system which comprises a pair of asymmetric nano particles, the two nano particles are used for responding to light waves, each nano particle is a dielectric ball wrapped by a graphene layer with different Fermi levels, and the radius of each nano particle is far larger than the thickness of the graphene layer. According to the method, construction of the nano antenna system with asymmetry is achieved, the kinetic equation of the nano antenna system (a dimer system) is obtained through theoretical derivation, the kinetic equation is used for revealing the dynamic behavior of the nano antenna system, and the scattered field of the nano antenna system can be explored through the kinetic equation. In order to regulate and control the scattered field of the nanometer antenna system, the nanometer antenna system can be converted among different states by introducing additional dimensionless pulses to enter the nanometer antenna system, and the purpose of regulating and controlling the scattered field is achieved.

A light-emitting device includes: a semiconductor light-emitting structure layer configured to have a photonic crystal layer; and a nanoantenna phosphor configured to be placed on an emission surface of the semiconductor light-emitting structure layer and to include a wavelength converter configured to convert a wavelength of light emitted from the semiconductor light-emitting structure layer to generate wavelength-converted light and an antenna array configured to have a plurality of nanoantennas periodically arranged on the wavelength converter.

In exemplary aspects, oligonucleotides are synthesized via a microfluidic reaction chamber integrating nanostructure / high-Q dielectric nanoantenna arrays of a metasurface device, the arrays providing synthesis sites. The method comprises; the chamber processing input reagents for producing oligonucleotides at outlets of the chamber; and optically exciting the synthesis sites by altering optical parameter(s) to cause at least one enzymatic synthesis cycle. In more specific examples, the method further includes effecting, after the cycle(s) occurs, PCR amplification of certain of the synthesized products by selecting and optically exciting one or more of the synthesis sites, and / or microfluidically segregating the one or more synthesized products, in response to the amplification step, into homogenous oligo pools.

Aspects of the disclosure provide a device and method for capturing one or more images using a photonic integrated circuit (PIC) optical phased array (OPA) based imaging system. The method may include processing the environmentally or artificially-lit received image using one or more injected control wavelengths or wavefronts to enable electronic control of functionality such as real time color filtering, glint removal or other intensity image manipulation, image stabilization, collection of multiple images for panoramic composites, focal plane adjustment and / or other image optimization manipulations based on user inputs. These system level functionalities may be accomplished with a device utilizing a plurality of optical nano-antenna elements, plurality of phase and amplitude modulators, plurality of measurement photodiodes and plurality of other associated photonic constructs along with one or more CMOS processors to process the received image.

The invention discloses a tunable nano antenna and a preparation method thereof, and belongs to the technical field of nano antennae, and the tunable nano antenna sequentially comprises an ordered metal mesh nano electrode layer, a Fe3O4 magnetic nano sphere layer, a silicon nano column micro-nano structure layer, a substrate layer and a lower electrode layer from top to bottom. The invention provides a tunable nano antenna and a preparation method thereof. According to the preparation method, the silicon nanorods and the Fe3O4 magnetic nanospheres are combined, and the composite nano antenna with magnetic response and optical resonance characteristics is constructed by utilizing the synergistic effect of the silicon nanorods and the Fe3O4 magnetic nanospheres, so that the limitation of regulation and control of a single material can be broken through, and more flexible performance regulation and control can be realized through the dual effects of a magnetic field and a light field.

A nanostructured substrate is provided for use in connection with analyzing a biological material in an optical detection system. Nanostructures imprinted in an optic support substrate are configured as a nanoantennae array for supporting fluorescence-based assays involving the detection and characterization of target analytes of a biological material, where each nanoantenna includes a conically-formed cavity and a conformal shell of high refractive index medium supporting an interior volume of the cavity that behaves as a single mode resonator to promote strong resonant field coupling between optical modes of the nanoantenna and a resident fluorescent species under excitation.