27results about How to "Improve sensor sensitivity" patented technology

The invention discloses a temperature sensing material based on dual-mode thermal response up-conversion luminescence and a preparation method and application thereof, and belongs to the technical field of optical temperature sensing. The chemical formula of the material is Bi (4-y) Ti (0.5) M (0.5) O8X: REy, wherein M is W or Mo, X is Cl or Br, RE is Er or Yb / Er, and a hydrothermal-molten salt method series synthesis strategy is adopted for preparation. Different from a traditional thermal quenching material, according to the dual-mode thermal response up-conversion luminescence temperature sensing material Bi4Ti0. 5M0. 5O8X, visible light is weakened along with temperature rise, and meanwhile 800 nm near-infrared luminescence is enhanced. By utilizing the characteristic that the up-conversion luminescence intensity has opposite response to temperature change, the up-conversion temperature sensing material disclosed by the invention has relatively high optical temperature sensitivity in a fluorescence intensity mode and a fluorescence lifetime mode, and is an optical temperature sensing material with a wide temperature measurement range, which can be used for high-temperature environment detection; the method has great application potential in the field of optical temperature sensing.

The on-chip refractive index sensor comprises a silicon-based substrate, a buried oxide layer, a silicon waveguide layer and an upper cladding layer, the buried oxide layer grows on a first surface of the silicon-based substrate, the silicon waveguide layer grows on one surface, far away from the silicon-based substrate, of the buried oxide layer, and the upper cladding layer grows on the other surface of the buried oxide layer. And the upper cladding covers one surface, far away from the silicon-based substrate, of the buried oxide layer and wraps the silicon waveguide layer. The silicon waveguide layer is formed by connecting and coupling a micro-ring group, an upper straight waveguide and a lower straight waveguide in series, the straight waveguides and the micro-ring group are of sub-wavelength grating groove type structures, the micro-ring group comprises two or more SWGS micro-rings, and the left end and the right end of the upper SWGS straight waveguide are sequentially connected with input strip-shaped waveguides, namely sub-wavelength grating groove waveguide transition waveguide structures, which are in mirror symmetry. Compared with a traditional refractive index sensor based on a single nanowire waveguide resonant ring structure, the scheme has the advantages of higher detection sensitivity, larger measurable refractive index range and the like.

The invention belongs to the field of sensors, and particularly relates to a flexible capacitive sensor for lithium battery pressure detection and a preparation method thereof. The sensor comprises a first polar plate and a second polar plate which are stacked, the dielectric layer is stacked between the first polar plate and the second polar plate, a bulge array is arranged on one side, close to the first polar plate, of the dielectric layer, a gap is reserved between the top of the bulge array and the first polar plate, the bottom area of bulges is larger than the top area of the bulges, and the dielectric layer is a polymer ionic liquid gel layer with a porous structure; the Spacer layer is stacked between the first polar plate and the dielectric layer and arranged on the periphery of the bulge array in a sleeving manner, one side of the Spacer layer is attached to the surface of the edge of the bulge array of the dielectric layer, the other side of the Spacer layer is attached to the first polar plate, and the Spacer layer is a polymer gel layer with a porous structure; the polymer, the porosity and the average pore size of the Spacer layer correspond to the polymer, the porosity and the average pore size of the dielectric layer; the sensing sensitivity and linearity can be improved, and the detection range can be widened.

The invention relates to the technical field of precision measurement, and discloses a miniaturized absolute gravity measurement device based on ion trap suspended nano-diamond, which comprises a vacuum module, a position detection and feedback control module and a laser and microwave module, the vacuum module comprises a vacuum cavity, a vacuum pump, an ion trap, nano-diamond, a convex lens, an objective lens and a copper wire; the vacuum cavity is matched with the vacuum pump to provide a vacuum environment; the nano-diamond is trapped in the ion trap through triboelectrification, stable trapping and free falling of the nano-diamond are completed by controlling instantaneous on-off of voltage of a cap pole of the ion trap, and a Tesla-level magnetic field gradient is generated by using a copper wire. The device is used for coupling the electron spin state of the NV color center and the motion state of the nano-diamond to generate spin-related wave packet splitting, beam splitting, reflection and beam combining operation of matter waves are achieved, a Mach-Zehnder interference sequence is constructed in combination with the free falling body process to accumulate gravitational acceleration related phase shift, and the device has the advantages of being high in sensitivity, small in size and capable of conducting measurement repeatedly.

The present invention provides a terahertz broadband high-sensitivity sensor chip based on local field enhancement and a manufacturing method thereof, which includes a Vivaldi antenna, an artificial surface plasmon waveguide with a metal groove structure, a terahertz wave is input through an input end waveguide, and the Vivaldi antenna at one end couples the terahertz wave to the artificial surface plasmon waveguide, and the terahertz wave is transmitted in the waveguide under the constraint of the artificial surface plasmon waveguide, and the terahertz wave on the waveguide is coupled back to the free space by the Vivaldi antenna at the other end and is received by the terahertz detector; a circular metal area is provided at the inner edge of the artificial surface plasmon waveguide to increase the effective working bandwidth of the sensor chip. The present invention has high sensing sensitivity and high effective working bandwidth, can reduce reflection, and improve coupling efficiency, thereby solving the resonance peak generated by the metamaterial sensor due to its special structural design, has a simple preparation process, and has low equipment price, and can be applied on a large scale.

An electronic device may include a display panel that displays an image through pixels and a window located above the display panel and through which light emitted from the display panel is transmitted. The display panel may include a light emitting area including the plurality of pixels; a plurality of organic light emitting elements located in the light emitting area to form the plurality of pixels; a thin film encapsulation layer covering the plurality of organic light emitting elements; a plurality of color filters arranged to overlap with the plurality of organic light emitting elements; and a plurality of light blocking portions located between the color filters to block the light. A plurality of first touch electrodes disposed between the plurality of light blocking portions and the thin film encapsulation layer and a plurality of second touch electrodes disposed between the thin film encapsulation layer and the window may be included.

The invention belongs to the technical field of optical sensing, and discloses an optical sensor based on a rare earth doped microbubble cavity, which is characterized in that when the optical sensor is used for predicting the concentration, the rare earth doped microbubble cavity is pumped by utilizing pumping source laser; then injecting an immunoglobulin G solution to be detected into the microfluidic channel of the rare earth doped microbubble cavity, and recording to obtain a changed signal laser spectrum; and comparing the signal laser power with a standard curve of the relationship between the concentration and the signal laser power to find a concentration value corresponding to the same signal laser power, so as to obtain the concentration of the immunoglobulin G solution to be detected. Biomolecules are detected by using an active cavity structure of the rare earth doped microbubble cavity, so that a high-precision biosensor can be realized, the concentration of an immune globulin solution can be predicted, and whether specific binding occurs among various immune globulins can also be predicted.

This invention relates to the field of sensing materials technology, specifically disclosing a cellulose-based conductive hydrogel material for ascorbic acid detection, its preparation method, and its applications. This hydrogel uses TEMPO oxidized cellulose nanofibers (TOCNF) as a biocompatible matrix. By introducing Cu-BTC / CNT composite nanoparticles, a three-dimensional conductive network with both high electrochemical activity and structural stability is constructed. While retaining the biocompatibility and flexibility of cellulose, it exhibits particularly high sensitivity and selectivity in detecting small biomolecules such as ascorbic acid, with short response time and good stability. This method achieves synergistic optimization of the composite material's structural uniformity and functionality without relying on complex molding processes. Experimental results show that the conductive hydrogel prepared by this invention possesses good mechanical properties and biocompatibility, exhibiting high sensitivity and stability in biosensing fields such as ascorbic acid detection, providing a novel high-performance material basis for flexible biosensors.

The invention belongs to the technical field of optical fiber sensors, and particularly relates to a preparation method of a probe type optical fiber gas pressure sensor, which comprises the following steps: step 1, mixing an elastomer and a curing agent thereof, and processing to obtain a mixed solution; treating the Fe3O4-elastomer mixed solution to obtain a Fe3O4-elastomer mixed solution; step 3, filling the Fe3O4-elastomer mixed solution obtained in the step 2 into the first hollow-core optical fiber, and carrying out curing operation; forming the Fe3O4-elastomer magnetorheological elastomer; and step 4, finally, cutting and welding are carried out to obtain the section of the hollow-core optical fiber as a pressure sensing hole structure of the probe type optical fiber pressure sensor. The applicability of the optical fiber gas pressure sensor is improved, the sensing sensitivity is improved, and the high-performance optical fiber sensor is prepared on the basis of a magnetorheological elastomer membrane material; the method can be used in the fiber sensing field.

The utility model provides an optical waveguide device and an optical structure thereof, the optical structure comprises a first metal thin film layer, a dielectric layer and a second metal thin film layer which are sequentially arranged along a light incidence direction, a first nano-structure array is arranged in the first metal thin film layer, and the outer side surface of the second metal thin film layer is smooth and uniform; the first nano-structure array is embedded into or penetrates through the first metal thin film layer, and the duty ratio is greater than 50%; the duty ratio is a first ratio of the length of a non-influence region in the one-dimensional first nanostructure array to the total length of the first nanostructure, or is a second ratio of the area of the non-influence region in the two-dimensional first nanostructure to the total area of the first nanostructure array; and the optical structure couples incident light with a preset light frequency to the surface wave propagating along the outer side surface of the second metal film layer. According to the optical structure, the environmental interference resistance of the device can be effectively improved, low-concentration biomolecules can be detected, and the stability and repeatability of biomolecule detection are improved.

A UV sensor head is provided capable of increasing sensing sensitivity. A UV sensor head 1 that converts ultraviolet light into visible light and guides the converted visible light toward an optical fiber 11 includes a wavelength conversion member having an inorganic matrix and phosphor particles dispersed in the inorganic matrix.

The utility model provides an induction module, a manipulator, a mechanical arm and a robot. The sensing module comprises a contact sensing layer, a strain part, a support and a main control part. The support comprises a body structure and a deformation structure arranged at one end of the body structure, the contact sensing layer is arranged on the body structure, the deformation structure deforms when the contact sensing layer is subjected to external force, and the strain component is arranged on the deformation structure. The main control part is electrically connected with the contact induction layer and the strain part so as to determine the external force according to induction information of the contact induction layer and the strain part. According to the structure arrangement, the main control piece can analyze the stress condition of the induction module by comprehensively contacting the force application information obtained by the induction layer and the external force information received by the strain component, and the induction sensitivity, the induction range and the use reliability of the induction module and the robot using the induction module are improved.

An embodiment of the present invention relates to a touch sensor and a touch input device comprising same. The touch sensor according to the embodiment of the present invention comprises: a plurality of driving electrodes each having a shape extending in a first direction and having a plurality of openings arranged along the first direction; and a plurality of reception electrodes comprising a plurality of reception electrode patterns arranged in the plurality of openings of the plurality of driving electrodes, and a plurality of connection patterns which are arranged along a second direction different from the first direction and electrically connect the plurality of reception electrode patterns.

An electronic device according to an embodiment may include a display module and a digitizer including a plurality of engraved patterns on a folded portion of a base layer, the plurality of engraved patterns being configured with a liquid metal. By this means, the electronic device according to one embodiment can prevent a resistance increase and a driving defect of the sensing coil due to a broken line or a crack, and can improve sensing sensitivity at the folding portion.

The invention discloses a thick-film resistor with high strain sensitivity and low temperature sensitivity and a preparation method thereof, and belongs to the technical field of functional materials, electronic elements and sensors. The preparation problem of the thick-film resistor with high strain sensitivity and low resistance temperature coefficient is solved. The preparation method comprises the following steps: weighing lead oxide, boron oxide and silicon dioxide, uniformly mixing, completely melting into molten glass, carrying out water quenching, and carrying out ball milling on the water-quenched glass slag to obtain lead borosilicate glass powder; weighing RuO powder and lead borosilicate glass powder, adding an organic carrier, mixing, adding into a three-roller grinder, and fully grinding to be fine and uniform, so as to obtain resistance paste; and coating a cleaned substrate with the resistance paste in a silk-screen printing manner, and in an air atmosphere, controlling the sintering peak temperature within the range of 750-950 DEG C and the heat preservation time of the sintering peak temperature within the range of 10-360 minutes to obtain the thick-film resistor with both high strain sensitivity and low temperature sensitivity.

A display device may include a window module and a display module including a first non-folding region, a second non-folding region, and a folding region disposed between the first non-folding region and the second non-folding region. The display module may include a damping layer, a color filter layer, a display panel, and a lower member, which are sequentially stacked below the window module, and the damping layer may include polymer.

The invention provides a signal scaling synthesis method for a double-interference channel push-pull structure, and aims to solve the sensing signal synthesis problem of the double-interference channel push-pull structure. According to the phase time domain signal scaling synthesis method adopting independent demodulation of the double interference channels, the signal response amplitude is doubled by utilizing the signal phase reverse characteristic of the double interference channels and reasonably setting the scaling coefficient, meanwhile, the lifting level after noise mixing of the double interference channels is controlled, and common-mode noise is restrained. According to the invention, the problem of unbalanced'push 'and'pull' sensitivity of a double-interference channel can be overcome, the response sensitivity after synthesis is effectively improved, the lifting effect of double-channel signal synthesis on background noise is reduced to the greatest extent, the sensing dynamic range is widened, and the influence of common-mode interference signals is eliminated.

The invention discloses a preparation method of a full-flexible PZT film, which comprises the following steps: (1) uniformly depositing an LSMO coating on a fluorophlogopite substrate, and crystallizing the LSMO coating; (2) spin-coating a plurality of PZT thin film layers on the crystallized LSMO coating to obtain a PZT / LSMO / mica product; (3) preparing a flexible supporting layer on the PZT thin film layer; and (4) immersing the product in an etching solution to completely dissolve the LSMO coating so as to obtain the full-flexible PZT film. The invention also discloses a preparation method of the full-flexible PZT sensor. The preparation method comprises the following steps: S1, designing the interdigital electrode and printing the interdigital electrode on the PET substrate; and S2, transferring the full-flexible PZT thin film to a PET substrate, and then performing packaging and polarization to obtain the full-flexible PZT sensor. The full-flexible PZT sensor with the characteristics of high performance and ultrasensitivity is obtained on the flexible PET substrate through a transfer strategy with high cost performance, so that not only is the excellent electrical property of the perovskite structure film improved, but also higher mechanical flexibility is shown.

The invention relates to a cosine grating micro-ring resonant cavity sensor which is connected with an input light source, a first detector and a second detector and comprises an upper channel waveguide and a lower channel waveguide, and a sensing ring is connected between the upper channel waveguide and the lower channel waveguide in an end face coupling mode. The sensing ring is provided with a cosine grating structure. Compared with a common upload and download type micro-ring resonant cavity, the cosine type grating micro-ring resonant cavity sensor has the advantages that the cosine type grating is additionally arranged, so that the influence of the external environment temperature is greatly reduced, and the sensing sensitivity of the sensor is greatly improved; the detection modes are flexible and diverse, a tunable laser can be used as an input light source, an optical power meter can be used as a detector, a broadband light source can also be used as the input light source, and a spectrograph can be used as the detector; the structure design is also flexible and diverse, different actual requirements can be met by adjusting the height, the width and the periodicity of the cosine grating, and the practicability of the sensor is improved.

The utility model provides a kind of sensor and electronic equipment, it is related to sensor field.Sensor includes: substrate, resistance sensing layer, capacitance sensing layer, pressure sensitive layer and contact layer.Resistance sensing layer is set on substrate.Capacitance sensing layer is set on the side of resistance sensing layer away from substrate, and capacitance sensing layer includes at least one hollow structure, and at least one hollow structure extends from the side of capacitance sensing layer close to resistance sensing layer to the side of capacitance sensing layer away from resistance sensing layer.Pressure sensitive layer is set on capacitance sensing layer, and is filled into at least one hollow structure, and pressure sensitive layer is contacted with the side of resistance sensing layer away from substrate by at least one hollow structure.Contact layer is set on pressure sensitive layer, and is configured to generate deformation under the action of external force, to transmit external force to pressure sensitive layer.

The utility model provides an induction module, a manipulator, a mechanical arm and a robot. The sensing module comprises a contact sensing layer, a force transmission structure, a stress sensor, a support and a main control part. The stress sensor and the main control part are assembled on the support, the contact sensing layer is arranged on the force transmission structure, and the force transmission structure abuts against the stress sensor when the contact sensing layer bears external force so as to transmit the external force to the stress sensor. The main control piece is in conductive connection with the contact induction layer and the stress sensor so as to form stress data according to induction information obtained by the contact induction layer and the stress sensor. According to the structure arrangement, the main control piece can analyze the stress condition of the induction module by comprehensively contacting the force application information obtained by the induction layer and the external force information received by the stress sensor, and the induction sensitivity, the induction range and the use reliability of the induction module and the robot using the induction module are improved.

The embodiment of the utility model discloses a control circuit for a vegetable warming board and the vegetable warming board, the control circuit comprises an induction module, a display module, a power supply control module and a speed regulation module, the induction module is used for detecting the distance between a human body and the vegetable warming board and generating a distance signal; the display module is used for receiving the distance signal and transmitting the distance signal to the power supply control module; the power supply control module is used for controlling the speed regulation module to regulate the rotating speed of the warming board according to the distance signal. The induction sensitivity of the control circuit is improved by utilizing the filtering effect of a capacitor in the induction module and the stable control of a resistor, so that the induction module detects the distance between a human body and the vegetable warming board and generates a distance signal, and the distance signal is transmitted to the power supply control module by using the display module; the power control module can control the speed adjusting module to adjust the rotating speed of the vegetable warming board according to the distance signal, so that the rotating speed of the vegetable warming board is automatically adjusted, and user experience is improved.

The present invention provides a signal scaling synthesis method for a dual interference channel push-pull structure, aiming to solve the problem of sensor signal synthesis using a dual interference channel push-pull structure. The present invention adopts a phase time domain signal scaling synthesis method with independent demodulation of dual interference channels, utilizes the signal phase inversion characteristics of the dual interference channels, and achieves doubling of the signal response amplitude by reasonably setting the scaling coefficient, while controlling the lifting level of the dual interference channel noise after mixing, and suppressing common mode noise. The present invention can overcome the imbalance problem of "push" and "pull" sensitivity of the dual interference channel, effectively increase the response sensitivity after synthesis, minimize the lifting effect of dual channel signal synthesis on the background noise, improve the sensing dynamic range, and eliminate the influence of common mode interference signals.

The invention discloses a wavelength-customizable all-fiber MZI sensor and a manufacturing method thereof, and the all-fiber MZI sensor comprises an optical fiber composed of a fiber core and a cladding, and also comprises a first straight waveguide and a second straight waveguide. Wherein the first straight waveguide and the second straight waveguide are located on the two sides of the junction of the fiber core and the cladding; the first straight waveguide and the second straight waveguide are composed of a plurality of refractive index modulation lines; the refractive index modulation line is formed by radiation of the laser along the axial direction of the junction of the fiber core and the cladding; the distance between the first straight waveguide and the fiber core is fixed, the distance between the second straight waveguide and the fiber core is adjustable, different high-order core modes are excited by changing the distance between the second straight waveguide and the fiber core, and tuning of resonant wavelength is achieved. According to the invention, the interference contrast of the all-fiber MZI is improved, the sensitivity of the torsion sensor for intensity demodulation is improved on the premise that the structural size is not increased, and the flexibility of light source band selection during actual torsion sensing application is also improved at the same time.

The invention discloses a gas sensing material as well as a preparation method and application thereof in a sensor, the gas sensing material is a metal organic framework material with a one-dimensional coordination structure, and the metal organic framework material comprises a complex of metal and an organic ligand; wherein the metal comprises one of copper, nickel and cobalt, the organic ligands comprise tetra-substituted benzene and tetra-substituted polycyclic aromatic hydrocarbon, substituent groups are hydroxyl or amido, every two of the four substituent groups serve as a group, and each group is arranged in an ortho-position mode; and the two groups are arranged in a central symmetry manner. According to the invention, the gas sensing sensitivity of the sensor in an oxygen-free environment is improved, and the sensitivity and selectivity of the sensor to adsorbed gas and the conductivity of the metal organic framework material are improved; the yield of the metal organic framework material is improved by regulating and controlling the microstructure and the gas sensing performance of the metal organic framework material.

The application belongs to the technical field of optical electric field sensing, and discloses a U-shaped cascade waveguide nested micro-ring resonant cavity type electric field sensor and a preparation method thereof. The electric field sensor comprises an input coupling unit, an optical sensitive unit and a spectrum detection output interface. The optical sensitive unit comprises an incident grating, a U-shaped cascade waveguide structure, a nested micro-ring resonant cavity and an electro-optic polymer film. The nested micro-ring resonant cavity comprises a reference resonant cavity and a sensing resonant cavity. The electro-optic polymer film covers the cladding layer of the sensing resonant cavity. The application expands the equivalent free spectral range of a single resonant unit through a U-shaped feedback structure, utilizes the free spectral range difference between the two resonant units to form a vernier effect to amplify the sensing response, and simultaneously adopts a heterogeneous integrated vertical coupling mode to improve the system integration and packaging consistency, and improves the sensing sensitivity and measurement range.

The invention belongs to the technical field of optical sensing, and particularly relates to an optical fiber bionic cilium flow velocity sensor and a preparation method thereof, and the method comprises the following steps: 1, continuously splicing a fixed-length single-mode optical fiber and a special optical fiber through a high-precision optical fiber cutting platform, and preparing a combined LPFG; 2, modulating the combined LPFG obtained in the step 1 by using a laser until a groove-shaped structure is formed on the side surface of the combined LPFG; and 3, printing a periodic bionic cilia structure, namely the polymer cilia, in the groove of the combined LPFG obtained in the step 2 by utilizing 3D printing equipment. The periodic waveguide is established on the optical fiber by using a special optical fiber combination method, and the periodic cilia structure is attached to the periodic waveguide by using a two-photon polymerization technology, so that the applicability of the optical fiber type flow velocity sensor is improved, the sensing sensitivity is improved, and the novel high-sensitivity flow velocity sensor is realized.