13 results about "Soft matter" patented technology

The invention relates to an optomechanical system for monitoring the mechanics of a sample, comprising: a photonic crystal (1, 2) with a substrate (1) and an array of transversally extending nanopillars (2) defining at least one row (3); a nanopillar cavity (4) for confining light and acting as a sensor for the sample; and a mirror region (5) formed in the array of nanopillars (2), the cavity (4) and the mirror region (5) being configured to prevent the propagation of light with Transverse-Magnetic (TM) polarization; the nanopillars (2) being spatially arranged to create a gradient of effective refractive index along the cavity (4), the maximum value of the effective refractive index inside the cavity (4) being lower than the effective refractive index of the mirror region (5).

The invention discloses a system and a method for measuring the thermophysical property of a soft material film. The system comprises a signal generator, a pump light path, a detection light path, a photoelectric detector, a signal processing module, a sample platform, a difference measurement module and a thermal parameter inversion unit. The system can be used for independently measuring the thermal conductivity, the specific heat capacity and the interface thermal resistance of liquid, gel and soft solid thin film materials at the same time on the premise that prior parameters are not needed. In combination with periodic heating of a square wave modulation heat source and a difference measurement strategy, high-precision measurement of micro-nano-scale thermophysical properties is realized, and the method is particularly suitable for various application scenes such as thermal interface materials (TIMs) and phase change energy storage materials.

The application discloses a kind of full material state multi-field coupling magnetic phase change regulation and control method and application system, it is related to magnetic phase change technical field, it solves the technical problem that existing technology exists excitation source single and material state range narrow, including the following steps: step 1, based on the determination rule of excitation source, at least one of magnetic field, electric field, temperature field, stress field is selected to constitute the excitation source, and the interaction of the excitation source and the electron spin or magnetic moment of substance occurs and changes system free energy;Established the unified regulation and control method covering multiple excitation sources, multiple material states, solved the technical problems that existing technology excitation source is single, material state range is narrow;Provide specific material system and implementation mode, cover solid alloy, liquid magnetorheological fluid, soft matter hydrogel, high-entropy alloy and multiple material states;Application system integrates memory energy storage and trace displacement driving dual function, can be applied to new energy storage, micro-nano precision manufacturing, aerospace, biological medical treatment and other fields.

A system, apparatus, method, algorithm and / or device (collectively, “system”) for non-contact or contactless ultrasound viscoelastic spectroscopy measures the viscoelastic properties of soft matter through exerting modulated ultrasound pressure waves, so called stress signals and measuring the material deformation, so called strain imaging, over a wide range of frequencies, and may be applied to various fields including but not limited to material science, polymer designing, tissue engineering, cancer drug development and / or biological tissue assessment for disease diagnosis and prognosis. By measuring the elastic and viscous moduli, the phase difference between them, and Poisson's ratio over a wide range of frequencies, this allows for non-destructive tests on soft matter such as biological tissue, by ultrasound probes.

The application discloses an ionic soft matter system low-scale molecular dynamics simulation method and a related device, and belongs to the technical field of molecular dynamics simulation. The method comprises the following steps: performing coarse-grained modeling on each component in an ionic soft matter system to be simulated; the components comprise ions and polar components; under the coarse-grained modeling framework, an interaction representation mode based on a dipole moment is introduced, the polar components are modeled in the form of an equivalent dipole moment, and a coarse-grained interaction model is obtained; and molecular dynamics simulation is performed according to the coarse-grained interaction model, and simulation results are obtained. At the theoretical level, the application replaces explicit positive and negative point charges with a dipole moment to describe molecular polarity, and at the simulation level, a coarse-grained molecular dynamics algorithm is introduced to represent the interaction of the polarity effect with the dipole moment. The method significantly reduces the calculation scale by reconstructing the form of electrostatic interaction, improves the simulation efficiency while retaining the key physical mechanism.

The invention discloses an in-situ X-ray scattering characterization method for a volatilization-induced dynamic process and a liquid sample cell, and belongs to the technical field of liquid X-ray scattering experiments. A liquid sample pool with a conical front end and a detection area and a volatilization opening is prepared by drawing a capillary tube through program-controlled laser, a liquid sample is injected into the liquid sample pool, and the rear end of the liquid sample pool is sealed; then in-situ X-ray scattering monitoring is conducted on the detection area in the sample volatilization process, so that sample dynamic structure evolution information is obtained. Different from an existing liquid sample cell which is completely sealed or approximately completely sealed, the continuous in-situ characterization of the liquid sample under the limited volatilization condition is realized by reserving the volatilization opening with the preset size. The method is simple in preparation and low in cost, the sample pool can be repeatedly loaded and sealed again, and the method is compatible with laboratory X-ray scattering equipment and a synchrotron radiation X-ray scattering platform and is suitable for dynamic structure research of a liquid system and a soft material system in the volatilization induction process.

The invention discloses a high-precision extensional rheology measurement method based on a texture analyzer and high-speed camera shooting, and belongs to the field of rheology and food oral cavity processing. Dynamic stretching of fluid in the vertical direction is integrally achieved through a texture analyzer, high-speed camera shooting is used for capturing instant dynamic picture information of fluid column diameter change and tensile fracture, and extensional rheology analysis and high-precision extensional rheology result output are carried out based on an OpenCV image processing algorithm. The device can be used for measuring the extensional rheological characteristics of the full-viscosity liquid. According to the method for obtaining pixel point information through algorithm design, the minimum diameter of the liquid column can be accurately positioned and recognized, and meanwhile the numerical value change of the liquid column can be obtained. The method can be used for formula optimization, processing technology control and quality evaluation, and can also be applied to extensional rheology research of biological materials, soft material physics and other high polymer materials.

The invention provides sericin microspheres as well as a preparation method and application thereof, and relates to the technical field of soft substance processing and microfluidics. The preparation method comprises the following steps: (1) taking an aqueous solution containing sericin as an aqueous phase 1; taking water or an aqueous solution containing auxiliary crosslinking components as an aqueous phase 2; (2) introducing the oil phase, the water phase 1 and the water phase 2 into a double-tube injection capillary glass tube microfluidic device, and shearing the water phase 1 and the water phase 2 by using the oil phase to prepare water-in-oil micro-droplets containing sericin; and (3) curing the micro-droplets containing the sericin protein to obtain the sericin protein microspheres. The microspheres are prepared from sericin as a raw material, and the prepared sericin microspheres are uniform in particle size and good in monodispersity, have rich autofluorescence characteristics, can be used as a fluorescent tracing carrier or an imaging material or used for carrying various active substances, omit an exogenous dye loading step, reduce toxicity and have good application prospects.

The invention provides a soft material thermal conductivity test fixture for a heat reflection test technology, and relates to the technical field of packaging material testing, the soft material thermal conductivity test fixture comprises a lower quartz vessel, the top surface is provided with a groove structure for accommodating a soft material sample, and the four corners of the bottom surface are provided with blind holes and embedded with columnar magnets; an aluminum film is arranged on the bottom surface of the upper-layer quartz plate; a strip-shaped magnet is embedded in the inner side of the concentric-square-shaped fixing frame, and the strip-shaped magnet presses the upper-layer quartz plate above the groove body structure of the lower-layer quartz vessel through the magnetic adsorption effect; the heating chip is fixed on the bottom surface of the lower-layer quartz vessel through an arranged welding layer and is opposite to the position of the groove body structure; the thermal conductivity testing device can be used for testing the thermal conductivity of a soft material, meanwhile, the heating chip is integrated, the thermal conductivity change conditions of a sample at different temperatures can be tested in situ, and the thermal conductivity of the sample can be detected in situ in a high-temperature aging state. And a degradation process of material thermal conductivity.

This invention relates to the field of soft matter material testing and evaluation technology, specifically to a method for evaluating the tribological properties of soft matter based on optical observation and image processing. The method includes: establishing a time-series synchronization mechanism; synchronous acquisition; image recognition and processing; constructing a multi-dimensional evaluation index system; establishing a quantitative correlation model; comprehensively scoring the lubrication performance of the soft matter material based on the multi-dimensional evaluation index system and the quantitative correlation model to form a material lubrication performance level evaluation; and controlling experimental parameters based on real-time feedback of the evaluation results. When liquid film rupture or uneven distribution is detected, the loading force or motion frequency is dynamically adjusted to achieve dynamic optimization evaluation of the lubrication performance of the soft matter material. This application effectively overcomes the inherent light scattering, refraction, and interference problems of porous soft matter materials, achieving high-precision in-situ observation of the interface state of soft matter materials, and solving the fundamental problem that traditional optical interferometry techniques cannot accurately measure or clearly observe such materials.

The invention discloses a method for preparing a plant meat analogue based on soft matter physics, and belongs to the technical field of food protein processing. The preparation method comprises the following steps: taking potato protein, soybean protein fibril and pea protein fibril as raw materials, adding deionized water, and stirring for a certain time to obtain a protein and fibril mixed solution; adding gellan gum, stirring, adjusting the pH value of the solution, and standing overnight at low temperature to obtain a pre-condensation body; stirring the pre-coagulated body, performing high-speed shearing treatment, reacting for a period of time at a certain temperature, and then cooling to room temperature to obtain the plant meat analogue. Potato protein, soybean protein fibrils and pea protein fibrils are combined with gellan gum for the first time, the vegetable meat analogue is obtained after coagulation-shearing-gelatinization treatment, and the appearance, fiber structure and strength of the vegetable meat analogue are similar to those of real meat. Technical reference is provided for preparation of the plant meat analogues, and the method has wide market application prospects.

The application relates to a soft matter assembly structure uniformity acoustic analysis device and a testing method, which comprises a test box, a sample pool for placing a sample, which is arranged in the interior of the test box, and standing wave tubes arranged on opposite sides of the sample pool, an acoustic wave generating device connected with one of the standing wave tubes, a detector connected with the other standing wave tube, and an analysis processing system connected with the detector. The sample is placed on a sample loading disc in the sample pool, the test box is closed before testing to achieve a good sound insulation effect, the acoustic wave generating device is used to emit acoustic waves to pass through the sample, the sound data of sampling points at different parts of the sample are collected for analysis, the uniformity of the sample can be rapidly and accurately evaluated, and the stability of the sample can be accurately evaluated through sampling analysis of the same part for a certain time.

The invention discloses a full-automatic in-situ X-ray microstructure characterization device. The device comprises an automatic liquid pretreatment module, an in-situ solution condition screening module, a high-flux X-ray microstructure characterization module, an automatic sampling and motion control module and a system control module, a control module of the system is electrically connected with other modules, collaborative program regulation and control of liquid sample configuration and an X-ray channel sample loading mechanical arm can be achieved, signal interaction and linkage control among the modules can be achieved, and full-process automatic operation of the device from sample pretreatment to structural characterization is completed. Through an integrated technical scheme of automatic liquid pretreatment, in-situ condition screening and high-flux X-ray scattering characterization, full-process automatic closed operation is realized, the experiment efficiency is greatly improved, the scattering data quality and batch consistency are also improved, and the method is suitable for large-scale popularization and application. The requirements of multiple fields on high-flux and automatic in-situ characterization of soft substances and biological macromolecular systems can be met.