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53results about How to "Convenient and highly integrated" patented technology

Low-cost biochemical sensor based on narrow-linewidth microcavity and broadband light source

InactiveCN107389611AEasy to manufactureFacilitate the preparation of on-chip arrays and realize the preparation of on-chip detectorsPhase-affecting property measurementsResonant cavityEtching
The invention provides a low-cost biochemical sensor based on a narrow-linewidth microcavity and a broadband light source. The low-cost biochemical sensor based on the narrow-linewidth microcavity and the broadband light source comprises the broadband light source and a double straight waveguide coupled micro-ring cavity, wherein the double straight waveguide coupled micro-ring cavity comprises a first straight waveguide, a second straight waveguide and a micro-ring resonant cavity; the micro-ring resonant cavity and the waveguides are prepared on SOI sequentially via exposure and etching; the micro-ring resonant cavity is in coupling connection with the first straight waveguide and the second straight waveguide separately; the broadband light source is input into the double straight waveguide coupled micro-ring cavity; sensing can be realized by monitoring the intensity change of an output signal of the double straight waveguide coupled micro-ring cavity. The low-cost biochemical sensor based on the narrow-linewidth microcavity and the broadband light source can effectively increase the measuring flux, greatly reduces the manufacturing cost and meet the portable requirement; the output light power is directly detected by using the broadband light source, so the sensitivity of the sensor is effectively improved.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

End effector of novel harvesting robot and flexibility control method thereof

An end effector of a novel harvesting robot and a flexibility control method thereof relate to the field of harvesting robots. The end effector only utilizes a servo motor to respectively drag a finger grabbing mechanism and a stem separating mechanism according to operation sequences so as to finish tasks of fruit grabbing and stem separation. Two pressure sensors on the inner sides of fingers are arranged in a vertically parallel mode, the pressure sensor above the finger surface monitors grabbing force of the fingers to a fruit in real time, and the pressure sensor below the finger surface detects a sliding state of the fruit on the finger surface in real time. A spongy cushion with a certain thickness is adhered to the inner sides of the fingers so as to avoid high-speed collision between the fingers and the fruit during rapid grabbing. The stem separating mechanism adopts a unique V-shaped scissors blade structure, a stem is cut off by high-speed collision between a knife edge and the stem, and whether the stem is cut off is judged according to the changing law of the rotating speed of the servo motor reflected by an encoder during stem separation. The end effector is simple in structure, reasonable in design, novel, unique and capable of achieving flexible harvesting of the fruits.
Owner:HENAN POLYTECHNIC UNIV

Broadband SPPs one-way exciter based on asymmetric nanoscale groove structure and control method

The invention discloses a broadband SPPs one-way exciter based on an asymmetric nanoscale groove structure and a control method. The broadband surface plasmon polaritons (SPPs) one-way exciter comprises a metal film, a main nanoscale groove is formed in the surface of the metal film, and an auxiliary nanoscale groove is formed in one side of the bottom of the main nanoscale groove to form the asymmetric nanoscale groove structure; the relative amplitude and phase difference of excited SPPs are regulated and controlled by controlling the depth of the main nanoscale groove and the depth of the auxiliary nanoscale groove, so that one-way excitation of the SPPs is achieved; furthermore, the interference effect among different modes inside the nanoscale grooves does not sensitively depend on wavelengths, and therefore bandwidth SPPs one-way exciter with the bandwidth reaching 220 nm is obtained. The SPPs one-way exciter has the high SPPs excitation efficiency, the high extinction ratio and other high performances, and has the super-small size of a few hundreds of nanometers, high integration is facilitated, and therefore the broadband SPPs one-way exciter is widely applied in an SPPs photonic circuit of the ultra-high integration level.
Owner:PEKING UNIV

Period detection system adapting to FPGA local reconstruction

The invention discloses a period detection system adapting to FPGA local reconstruction, and aims to provide a framework which facilitates function transplantation and efficiently utilizes hardware resources. According to the technical scheme, a platform control management module receives control information sent by a system bus through communication middleware, monitors the operation of whole platform software in real time according to the requirements of the system, and controls the reconstruction of a reconstruction area. The generated global and local bit stream files and other configuration data are placed on a Flash memory, control information issued by the system is analyzed, and a scheduling processing process is set based on a periodic reconstruction algorithm of a function priority. During reconstruction, corresponding local reconfiguration data in a detection period is sequentially read, the function Bit operation body is serially loaded to the ICAP configuration interface of the FPGA. After loading is completed, the current reconstruction function is operated, reconstruction loading of the function in the reconstruction area is achieved, and the requirement for periodictime division multiplexing of the function on a periodic detection system hardware platform is met.
Owner:10TH RES INST OF CETC

Dual-color surface plasmon beam splitter of asymmetrical nanometer groove structure and beam splitting method

The invention discloses a dual-color surface plasmon beam splitter of an asymmetrical nanometer groove structure and a beam splitting method. The dual-color surface plasmon beam splitter comprises a metal thin film. A main nanometer groove is formed in the surface of the metal thin film, an additional nanometer groove is formed in one side of the bottom of the main nanometer groove, and then the asymmetrical nanometer groove structure is formed. Through the depths of the main nanometer groove and the additional nanometer groove in a control structure, the relative amplitude and phase differences of excited SPPs are regulated and controlled, the one-way excitation of the SPPs in one direction is achieved under the first working wavelength, the contribution to the SPPs excited in a third-order wave guide mode is further made, and the one-way excitation of the SPPs in the opposite direction is achieved under the shorter second working wavelength. The beam splitter has the high SPPs excitation efficiency, the high extinction ratio and other high performance at the same time; due to the super-small size of hundreds of nanometers, highly integration is facilitated, and therefore the beam splitter is widely applied to an ultrahigh integrity SPPs photonic circuit.
Owner:PEKING UNIV

Tunable all-solid-state white light laser system

ActiveCN110165536AFlexible adjustment of white light chromaticitySimplified Shaping SystemLaser detailsAll solid stateLength wave
The invention relates to a tunable all-solid-state white light laser system and belongs to the technical field of white laser display. The system comprises a blue light LD, a self-frequency doubling yellow laser and a laser beam combining assembly, wherein the light emitted by the blue light LD and the light emitted by the self-frequency doubling yellow laser are combined through the laser beam combining assembly to form white light laser, and the working wavelength of the blue light LD is 430-450 nm, and the working wavelength of the self-frequency doubling yellow laser is 560-590nm. According to the spatial color mixing principle, the white light laser is obtained through matching according to a proper proportion, and the blue light components and yellow light components in the system are independently adjustable; the adjustment of cold white light, natural white light and warm white light of the system can be achieved by controlling the power ratio of the blue light components and the yellow light components; a super-continuum spectrum generation device and complex devices such as white light extraction are not needed, and the system is adjustable in real-time chromaticity, is easy to integrate, and is particularly suitable for the field of high-power special illumination display.
Owner:SHANDONG UNIV

120-degree optical mixer based on hybrid plasmon optical waveguide

The invention discloses a 120-degree optical mixer based on a hybrid plasmon optical waveguide, which is composed on a singe 3*3 multi-mode interference coupler, wherein the 3*3 multi-mode interference coupler is provided with a multi-mode waveguide region and three input waveguides and three output waveguides of the multi-mode waveguide region, and the waveguide cross section structure perpendicular to the light propagation direction of the 3*3 multi-mode interference coupler is a hybrid plasmon waveguide structure; the hybrid plasmon waveguide structure includes a metal layer, a slit dielectric interlayer, a dielectric waveguide layer and a substrate layer which are sequentially designed in a laminated manner from top to bottom, the clearance between the metal layer, the slit dielectricinterlayer and the dielectric waveguide layer and the substrate layer forms an air cladding; both input light of the input waveguides and output light of the output waveguides are of a hybrid plasmonfundamental mode, the hybrid plasmon waveguide structure is used for exciting the input light of the hybrid plasmon fundamental mode to form multiple hybrid plasmon optical waveguide modes in the multi-mode waveguide region. The size of the mixer is reduced from the millimeter level to the micron level.
Owner:NANJING UNIV OF POSTS & TELECOMM
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