88 results about "Liquid crystal elastomer" patented technology

The invention discloses an intelligent purification coating with a bionic pulmonary membrane type respiratory metabolism function. The intelligent purification coating comprises a sensing and adsorption layer, a driving and transportation layer and a catalysis and metabolism unit, the sensing and adsorption layer is composed of a chemical heterojunction network formed by two-dimensional transition metal carbonitride MXene and a zeolite imidazate framework structure material through an in-situ coordination reaction of metal ions and hydroxyl groups on the surface of MXene; the driving and transporting layer takes a cross-linked liquid crystal elastomer network as an intelligent response matrix, and high-length-diameter-ratio magnetic ferroferric oxide nanorods of which the surfaces are modified by a silane coupling agent are uniformly dispersed and embedded into the matrix; and the catalysis and metabolism layer is anchored on a preset key mass transfer path in the driving and transporting layer in a discrete metabolism island form. According to the coating, various volatile organic compounds (VOCs) and enzyme-light synergistic deep mineralization can be realized under mild conditions, and the energy metabolism function of mitochondria can be accurately simulated.

The invention discloses a flexible actuator integrating driving, sensing and rigidity changing and a manufacturing and driving method of the flexible actuator. The actuator adopts a three-layer composite structure: a driving layer is composed of a liquid crystal elastomer and can generate reversible deformation in response to light or thermal stimulation; the variable stiffness layer is composed of a polydopamine modified stiffness adjustable polymer, and active switching of stiffness and deformation locking can be achieved through thermal regulation and control; the sensing layer is composed of a multi-walled carbon nanotube grid, can be integrally formed with the driving layer, and monitors self deformation in real time by transmitting resistance signals; the actuator is obtained by compounding the three layers; the driving method comprises repeated heating and cooling so that the actuator can be bent, fixed and restored. Through cooperation of the three functional layers, unification of optical / thermal multi-mode driving, real-time self-sensing and active deformation locking is achieved, an actuator can lock any middle deformation state by regulating and controlling the cooling rate, and the optical / thermal multi-mode driving device has the advantages of being diverse in driving mode, high in deformation controllability and low in energy consumption.

The invention relates to the technical field of intelligent materials and structural dynamics, solves the technical problems that an existing tumbler structure is lack of self-continuous motion ability and depends on external energy, and particularly relates to a light-driven liquid crystal elastomer tumbler and a nonlinear dynamics control method thereof. Self-continuous swinging under illumination of certain intensity is realized by utilizing light response design of the liquid crystal elastomer and coupling of nonlinear restoring force, and application is performed by utilizing regular movement of the liquid crystal elastomer. The tumbler structure can generate a state alternating process from swinging out of an illumination area to swinging back to the illumination area under the condition of specific light source intensity, and the change amplitude of standing and inclining alternation can be changed by adjusting illumination parameters. According to the tumbler structure, the limitation problem of a traditional tumbler can be solved, the tumbler structure can achieve self-continuous movement under the condition that the tumbler structure does not depend on external periodic stimulation, and the application of the tumbler structure is expanded.

The invention discloses a large-driving-force liquid crystal elastomer composite artificial muscle belt and a manufacturing method and application thereof. The preparation method comprises the following steps: reacting a mixed reaction system containing a liquid crystal monomer, a chain extender, a cross-linking agent, a photoinitiator, a catalyst and a nano material to prepare a composite oligomer; and placing the composite oligomer in a mold, removing the solvent, and then carrying out stretching and cross-linking treatment to obtain the liquid crystal elastomer composite artificial muscle band with large driving force. The composite artificial muscle belt can achieve linear contraction under thermal stimulation, and large thrust can be generated in the recovery process; meanwhile, the composite artificial muscle belt can achieve large driving force output without being assembled by an artificial muscle fiber bundle, and the technical problem caused by the fact that a plurality of artificial muscle fiber bundles are assembled to achieve contraction force amplification is solved.

The invention discloses a liquid crystal elastomer structure multi-objective optimization method based on depth evolution mapping. According to the method, by constructing a mapping model from individual features to operator parameters, an optimization algorithm can adaptively adjust the intensity of crossover and mutation operations according to the position, fitness ranking and neighborhood features of each candidate solution in a search space, so that the local refining effect is enhanced while the global exploration capability is kept. Compared with an existing parameter adjusting method based on a unified parameter strategy or population statistics, the method has the advantage that self-adaptive optimization of an individual level is realized. The method belongs to the cross technical field of computational material science, intelligent optimization algorithms and structural design, can be applied to the performance optimization problem of intelligent material systems such as soft robot drivers, artificial muscles and flexible sensors, and can also be popularized to other engineering design scenes involving high-dimensional parameter space and multi-target tradeoff.

The application provides a preparation method of a liquid crystal elastomer foam doped with boron nitride, comprising the following steps: 1) preparation of a NaCl salt template; 2) preparation of a liquid crystal elastomer monomer solution: a liquid crystal elastomer monomer solution is prepared by adding a sufficient amount of a toluene solution into 1,4-bis-[4-(3-acryloyloxypropoxy)benzoyloxy]-2-methyl benzene RM257 as a liquid crystal unit; 3) formation of a liquid crystal elastomer network; 4) preparation of a pre-crosslinked liquid crystal elastomer foam; 5) deformation programming of the liquid crystal elastomer foam: the pre-crosslinked liquid crystal elastomer foam is placed into the template for constant compression, and secondary crosslinking is performed using ultraviolet light under the constant compression state to form a secondary crosslinking network; at this time, the liquid crystal elastomer foam has a thermoreversible deformation characteristic, which is manifested as expansion at a temperature rise and shrinkage at a temperature drop, and the process cycle is reversible; and 6) preparation of a liquid crystal elastomer / heat-conducting BN composite foam.

The invention discloses a stealth coating material for aviation aircrafts. According to the invention, a three-layer composite structure design is adopted; the intelligent sensing layer is composed of graphene quantum dots and a piezoelectric nanofiber composite network, so that real-time sensing of electromagnetic wave signals is realized; the tunable metamaterial layer comprises a liquid crystal elastomer matrix and nickel-titanium alloy nanowires dispersed in the liquid crystal elastomer matrix, and electromagnetic parameters of the material are dynamically adjusted by applying an electric field or a temperature field; vanadium dioxide nanoparticles, a photonic crystal structure and carbon nanotube aerogel are integrated in the multispectral stealth layer, and radar, infrared and visible light multispectral synergistic stealth is achieved. The coating is further integrated with a microencapsulation repairing agent and an intelligent control system, and has the self-repairing and self-adaptive adjusting functions. Compared with the prior art, 0.1-40 GHz ultra-wide frequency band radar wave absorption is achieved, the radar cross section is reduced by 25-30 dB, the infrared radiation characteristic is reduced by 80% or above, the surface density is only 1.2-1.5 kg / m, the weight is reduced by 65% compared with a traditional coating, and a key material technical support is provided for a new generation of stealth aircrafts.

The invention discloses a conductive particle reinforced elastomer self-sensing driver which comprises a liquid crystal elastomer matrix and conductive particles, the conductive particles form a continuous or semi-continuous conductive network in the matrix, and the invention relates to the technical field of soft robot driving and intelligent materials. According to the conductive particle reinforced elastomer self-sensing driver and the preparation method thereof, the conductive particles serve as a heating element and a sensing element at the same time, an external temperature sensor or displacement sensor is not needed, the system structure is greatly simplified, resistance feedback directly corresponds to a deformation state, heat conduction delay is bypassed, and intelligent compensation is conducted in combination with a neural network. The conductive particles are uniformly distributed, the local hot spot problem of the resistance wire is avoided, the conductive particles and the LCE substrate are physically / chemically combined, no mechanical interface exists, compared with an embedded metal wire, the conductive particles have relatively small influence on the rigidity of the LCE, excellent flexibility is kept, and the LCE is suitable for the face of an expression robot and other applications needing to be attached to the skin.

The invention discloses a wheel diameter adjustable trolley with sensing-deformation composite spokes and a control method. Each wheel of the trolley is composed of a wheel axle and a plurality of wheel spokes distributed in a circumferential array mode, and the wheel spokes are of a three-layer composite structure: a driving layer composed of a liquid crystal elastomer is responsible for generating deformation under thermal stimulation; the rigidity-variable layer formed by a rigidity-adjustable polymer realizes hardening locking through ultraviolet irradiation, and realizes reversible adjustment of rigidity through heating; the sensing layer is formed by a multi-walled carbon nanotube grid, can be integrally formed with the driving layer and is used for monitoring the wheel diameter change in real time; according to the control method, the trolley can be switched between the high obstacle crossing ability of the large wheel form and the high load stability of the small wheel form. According to the method, the motion performance under the complex terrain is remarkably improved, and the method has wide application prospects in the field of adaptive mobile robots.

An electrothermally driven artificial muscle fiber based on a liquid crystal elastomer. The overall mechanical strength of the fiber is improved without affecting the driving performance thereof, can be driven quickly and precisely, and has quick response characteristics. The electrothermally driven liquid crystal elastomer artificial muscle has high sensitivity, large actuation strain and high output force, can achieve a maximum actuation strain of 60% within 0.3s, and has a large driving force while satisfying a large actuation stroke, such that the electrothermally driven liquid crystal elastomer artificial muscle has broad research prospects in the fields of flexible electronics, soft robotics and rehabilitation therapy. The preparation method for the electrothermally driven artificial muscle fiber based on a liquid crystal elastomer involves a simple preparation process and easy operations, and can be mass-prepared.

A composite material comprising multiple particles scattered within an elastomer, wherein the elastomer is an authetic-oriented nematic liquid crystal elastomer. Another composite material comprising a first outer layer, a second outer layer, and an intermediate layer between the first and second outer layers, wherein the intermediate layer comprises an authetic-oriented nematic liquid crystal elastomer.

The application discloses a high-toughness semi-interpenetrating network liquid crystal elastomer with low phase transition temperature and a preparation method and application thereof, and belongs to the technical field of liquid crystal elastomers and intelligent polymer materials. The preparation method comprises the following steps: after linear liquid crystal polyurethane, liquid crystal polymerizable monomers, dithiol, polythiol, a photoinitiator and a thermal catalyst are blended and dissolved, a precursor solution is obtained by mixing the linear liquid crystal polyurethane, a pre-crosslinked film is obtained through thermal crosslinking, and then a free radical polymerization reaction is carried out on the pre-crosslinked film under the condition of mechanical stretching and using ultraviolet light irradiation, so that the high-toughness semi-interpenetrating network liquid crystal elastomer with low phase transition temperature is obtained. According to the application, the semi-interpenetrating network is constructed, so that the flexible long chain of the polymer can effectively dissipate mechanical energy through slippage when being stressed, and the breaking toughness of the material is greatly improved. Meanwhile, the phase transition energy barrier is effectively reduced through the regulation of the liquid crystal monomers, and the elastomer is endowed with the ability to realize large-strain reversible deformation under extremely low thermal stimulation (such as physiological temperature) and extremely excellent actuating function.

The application discloses a kind of based on liquid crystal elastomer photothermal response photocatalysis / reflection rotary drive device, belong to flexible photothermal drive intelligent material and photocatalysis / photo reflection function device cross technical field.This device includes vane matrix, pulley, photothermal response drive component and fixer.The vane matrix one side load photocatalytic film, the other side load light reflection film;The pulley is fixed in vane matrix end, linear shrinkage force is converted into rotary moment, realizes vane directional rotation;The photothermal response drive component is graphene doped liquid crystal elastomer, under sunlight, light absorption heating shrinkage, pull pulley and drive vane 90 ° directional overturn, when there is no sunlight, elastomer resets, vane restores initial state, complete photocatalytic film and light reflection film non-contact automatic switching.This application does not need external energy input, only rely on solar drive, response is fast, service life is long, set photocatalytic degradation and radiation cooling double function in one, applicable to open environment photocatalytic purification and radiation cooling self-adapting function switching.

Liquid Crystal Elastomer (LCE) fibers, an apparatus for manufacturing, and a method for using the apparatus are provided. LCE fibers formed from each of a plurality of resin recipes can undergo reversible temperature driven actuation of the fiber. Each of the resin recipes forms a fiber having a different actuation temperature. The apparatus includes: an extrusion device, a drawing bobbin, a coating basin, a collector bobbin, a first plurality of curing devices, and a second plurality of curing devices, to transform a resin recipe into a LCE fiber. In operation, the extrusion device extrudes the resin through to the first plurality of curing devices for a partial cure. Once in contact with drawing bobbin the resin is coated in a fluid, and then pull through the second plurality of curing devices for a final cure by collector bobbin, where it can be collected and post-processed.

The present application relates to a liquid crystal elastomer microstructure preparation method based on photopolymerization phase separation, the method comprising S1, for a first liquid crystal cell with a specified thickness, filling a mixture of photopolymer monomers and liquid crystals between the first substrate and the second substrate of the first liquid crystal cell, the first substrate being a substrate without an alignment layer, and the second substrate being coated with an alignment layer; S2, covering a gray-tone mask on the first surface of the first substrate of the first liquid crystal cell; the first surface of the first substrate being the surface away from the mixture; S3, performing ultraviolet exposure on the gray-tone mask to separate the photopolymer monomers and the liquid crystals, and obtaining a composite structure; S4, based on a pre-configured liquid crystal elastomer prepolymer, processing the composite structure according to a preset liquid crystal elastomer microstructure preparation strategy, and obtaining a liquid crystal elastomer microstructure. The liquid crystal elastomer microstructure film prepared by the method has a thickness ranging from several microns to tens of microns, good alignment, and simple manufacturing process, low cost and high precision.

damping device (40) for an optical system, in particular a projection optic (10) of a lithography system (1), comprising - a supporting, first element (42), in particular a support frame (34) for receiving at least one optical element (36); - a second element (50) incorporated in the first element (42), in particular the optical element (36); and - at least one damping element (38) arranged between the first element (42) and the second element (50), in particular a mechanical end stop, wherein the damping element (38) has a liquid crystalline elastomer (48) with viscoelastic damping properties.

The invention discloses an artificial muscle belt, a multi-channel continuous preparation method and a multi-channel continuous preparation device. The multi-channel continuous preparation method of the artificial muscle band comprises the following steps: feeding an artificial muscle precursor material into a first rolling orientation device, and processing the artificial muscle precursor material to form a film-shaped base material with a preliminary orientation structure; the film-shaped base material is fed into a second rolling orientation device to be drafted, the roller linear speed of the second rolling orientation device is larger than that of the first rolling orientation device, meanwhile, in the drafting process of the film-shaped base material, the film-shaped base material is subjected to cross-linking curing treatment through a cross-linking curing device, and a cured film with a target orientation structure is obtained; and cutting the cured film into at least two independent artificial muscle bands. According to the device based on the differential rolling drafting orientation and rolling cutting method, multi-channel controllable continuous preparation of the liquid crystal elastomer artificial muscle belt can be achieved, and powerful support is provided for practical application of an artificial muscle driver.

The invention provides a self-sensing driver based on thermoelectric fiber intrinsic integration, a closed-loop control method of the self-sensing driver and a soft grabbing device, and belongs to the technical field of soft robot driving and control. The device comprises a liquid crystal elastomer deformation layer which is used for generating programmable contraction or bending deformation after being heated; the driving-sensing coplanar layer is arranged below the liquid crystal elastomer deformation layer in a stacked mode, the heating-sensing coplanar layer is arranged below the liquid crystal elastomer deformation layer in a stacked mode, and the polyimide constraint bottom layer is arranged below the driving-sensing coplanar layer in a stacked mode and used for limiting the single-degree-of-freedom deformation direction; and the closed-loop control unit is used for receiving the thermoelectric force signal generated by the heating-sensing coplanar layer and dynamically adjusting the input voltage of the snake-shaped patterned conductive polymer driving film in the heating-sensing coplanar layer. The method successfully solves the three core problems of mechanical mismatch, temperature drift interference and insufficient open-loop control precision in the field of soft robots.

The invention discloses a liquid crystal elastomer composite material and a preparation method thereof, and relates to the technical field of liquid crystal elastomers. The method comprises the following steps: firstly, synthesizing an ionic liquid functionalized liquid crystal monomer containing double bonds through a multi-step reaction; then preparing a UiO-66 type metal organic framework material, and sequentially performing amination, maleic anhydride modification and lithium salt adsorption to obtain modified MOFs; and finally, carrying out dispersion reaction on an ion functionalized liquid crystal monomer, the modified MOFs, a cross-linking agent, a photoinitiator and a catalyst in tetrahydrofuran to obtain a liquid crystal oligomer dispersion liquid, casting, drying to form a film, and carrying out stretching orientation and ultraviolet light cross-linking curing to obtain the final composite material. The method has the advantages that a continuous ion transmission path is constructed on the molecular level through chemical bond grafting, meanwhile, a macroscopic ion channel is provided by utilizing the porous MOFs material, and the ionic conductivity of the material is remarkably improved through the synergistic effect of the two.

This invention relates to the field of functional liquid crystal materials technology, and discloses a method for preparing and applying a spiropyran-based ionic conductive cholesteric phase liquid crystal elastomer with multimodal sensing characteristics. This liquid crystal elastomer is prepared by co-polymerization of a spiropyran derivative as the core unit for photo / thermal / mechanical response with polymerizable liquid crystal monomers, chiral agents, thiol crosslinking agents, ionic liquids, and initiators. Its core mechanism is that the microscopic isomerization of spiropyran molecules is amplified into a change in the mesoscopic polymer arrangement through intermolecular synergistic effects. Simultaneously, relying on the intrinsic conductivity difference between the ionic anthocyanin (MC) and non-ionic spirocyclic (SP) phases, precise control of macroscopic conductivity is achieved. This composite material achieves multiple responses with a single spiropyran component, enabling the construction of multimodal flexible sensors. It addresses the pain points of complex structures and poor compatibility in traditional sensors, and has significant research value in fields such as smart wearables, electronic skin, and healthcare.

This invention relates to a liquid crystal elastomer (CLCE) anti-counterfeiting label with information patterns, belonging to the fields of anti-counterfeiting technology and information security technology. It achieves multiple anti-counterfeiting effects through the following characteristics: the CLCE on the label surface reflects light of different wavelengths at different angles, i.e., the color appears different depending on the viewing angle; pressing or slightly stretching the label reveals a distinct dynamic rainbow color; under ultraviolet (UV) light excitation, the front and back of the anti-counterfeiting label display differentiated patterns—the front displays a clear fluorescent pattern and the label simultaneously emits green phosphorescence, while the back displays a unique identification pattern completely different from the front; when a left-handed polarizer is superimposed, the pattern contrast is significantly enhanced, further improving visual clarity; when a right-handed polarizer is superimposed, the pattern completely disappears, achieving an invisible effect; furthermore, after UV light excitation and the light source is turned off, the label can achieve continuous afterglow emission for a long time, thus providing an additional, time-based anti-counterfeiting verification method.

Provided are articles including a substrate and a cured composition of a curable composition comprising 50 to 81 weight percent of a liquid crystal monomer, 1 to 24 weight percent of a chain extender, 6 to 26 weight percent of a crosslinker, and 0 to 1.5 weight percent of an initiator, wherein the curable composition is adjacent to the substrate, wherein the curable composition is in the form of a continuous or discontinuous layer, and wherein the cured composition comprises a mesogen orientation gradient. Also provided are methods of making mesogen orientation gradients and articles including the same.

The invention discloses an MXene composite bacterial cellulose intelligent response supercapacitor and application thereof, and belongs to the technical field of capacitor preparation. The invention provides an MXene / bacterial cellulose composite conductive ink system based on 3D printing, direct printing of the MXene / bacterial cellulose composite conductive ink system on a liquid crystal elastomer film is realized, and an intelligent response micro supercapacitor integrating a finger-shaped supercapacitor and a thermal driving film is prepared.

The invention discloses a breathable nanofiber membrane with waterproof and intelligent heat management functions and a preparation method of the breathable nanofiber membrane, and belongs to the technical field of functional nanofiber membrane preparation. The nanofiber membrane includes: a first fiber layer including liquid crystal elastomer fibers, the liquid crystal elements of which are oriented in a first direction; a second fiber layer comprising thermoplastic polyurethane fibers whose fiber axes are oriented in a second direction; the two layers of fibers are compounded through hot-pressing crosslinking, and the first direction intersects with the second direction. The temperature responsiveness of the liquid crystal elastomer is utilized, the first fiber layer shrinks in the orientation direction at high temperature, and due to constraint and orthogonal arrangement of the second fiber layer, the aperture of the driving film is increased, and the air permeability is remarkably improved; and at low temperature, the device recovers. The film has excellent waterproofness (water pressure gt and 40 kPa resistance) and an intelligent heat management function (the air permeability can be reversibly adjusted between 9.6 mm / s and 55 mm / s), and has a wide application prospect in the fields of functional clothing, intelligent wearing and the like.

Described is a device for providing haptic stimuli to a body part of a user, the device comprising an actuating element configured to deform between a non-actuated state and an actuated state upon electrothermal activation, wherein the actuating element comprises a laminated structure including a flexible layer comprising liquid crystal elastomer (LCE); a conductive layer, electrically couplable to an electrothermal activator, and comprising an electrically conductive polymer; and an priming layer provided in between the flexible layer and the conductive layer and comprising an priming polymer, wherein the electrically conductive polymer derives from 3,4-ethylenedioxythiophene (EDOT) monomer units, while the priming polymer derives from vinyl or vinylidene monomer units. Also described is a method of manufacturing said device for providing haptic stimuli to a body part of a user.

The invention relates to the technical field of bionic artificial muscles, in particular to a bionic artificial muscle with a spiral-crack integrated structure and a preparation method of the bionic artificial muscle. A carbon nanotube dispersion liquid is sprayed on the surface of a spiral liquid crystal elastomer, and a porous carbon nanotube layer with a microcrack network is formed in situ on the surface of the spiral liquid crystal elastomer by utilizing the synergistic effect of rapid volatilization of a solvent and stress release of a matrix, so that the bionic artificial muscle with a spiral-crack integrated structure is prepared. Through the unique spiral-crack integrated structural design, the technical contradiction that high-sensitivity sensing and large-strain driving are difficult to cooperate is fundamentally solved, and organic unification of driving strain amplification, a wide strain range and high linearity is achieved. The artificial muscle prepared by the method has excellent structural stability, actuating performance and strain sensing performance, and has wide application prospects in the fields of soft robots, wearable equipment, intelligent prostheses and the like.

The invention discloses a single-layer double-chiral interpenetrating network liquid crystal elastomer volume grating and a preparation method, and relates to the technical field of manufacturing of liquid crystal diffraction optical devices and near-to-eye display (XR / AR) optical waveguide coupling gratings. The preparation method comprises the following steps: step S10, providing a first substrate and a second substrate, and constructing a grating orientation template; s20, assembling to form a liquid crystal box; s30, forming a first polymer network; and S40, forming a second polymer network, and interpenetrating the first polymer network and the second polymer network to form an interpenetrating network structure. According to the preparation method of the single-layer double-chiral interpenetrating network liquid crystal elastomer volume grating, the first polymer network and the second polymer network can be interpenetrated to form an interpenetrating network structure, and finally the double-chiral liquid crystal elastomer network volume grating with stable performance is obtained in a single-layer structure.

The application discloses a one-way contraction type liquid crystal elastomer fiber and an intelligent fabric combined with a knitted structure, and belongs to the field of intelligent polymer materials. The fiber with the one-way contraction-maintenance characteristic is prepared by introducing a specific amount of photo-thermal response material into a liquid crystal elastomer system and combining internal and external double-stretching spinning processes. The fiber prepared by the method is pre-elongated by mechanical stretching, rapidly contracts under infrared light stimulation, maintains the contraction state after the light source is removed, and is restored by mechanical stretching again, so that the "on-off" type precise control is realized. The fiber is combined with the knitted structure to prepare the intelligent fabric with the local fixed-point driving capability; further, the controllable deformation of the material under the cooperation of multiple physical fields is utilized to construct a logic operation unit with "force" instead of "electricity", so that logical functions such as and, or and not are realized. The application can be applied to the fields of artificial muscles, intelligent wear, light-controlled switches and coreless logic devices.

The invention relates to the technical field of light-driven intelligent material driving control, solves the technical problems that most traditional liquid crystal elastomer propelling devices do reciprocating explosive motion, propelling force directions are mutually offset, and unidirectional continuous upward propelling is difficult to achieve, and particularly relates to a control method of a light-driven self-excitation unidirectional propelling device and a propeller. Comprising a power propulsion system, the power propulsion system comprises a plurality of double-layer liquid crystal elastomer spherical shells which are circumferentially arranged on an integral frame at equal intervals, liquid crystal elastomer rings are arranged among the double-layer liquid crystal elastomer spherical shells, and the power propulsion system generates stepped upward one-way thrust on the propeller in an illumination area. By introducing the liquid crystal elastomer ring structure with the self-rotating capacity, periodic explosive thrust conversion under the illumination condition is achieved, the propeller conducts continuous one-way propelling in the fluid environment such as liquid or rarefied gas, and therefore the propelling efficiency and the energy utilization rate are remarkably improved.

The invention discloses an adaptive flexible gripper and a driving method. Each gripper is formed by compounding a liquid crystal elastomer driving layer and a rigidity-adjustable polymer variable-rigidity layer and then fixing the liquid crystal elastomer driving layer and the rigidity-adjustable polymer variable-rigidity layer through a gripper support, and the driving layer deforms under thermal stimulation to provide gripping power; the variable stiffness layer can be hardened and shaped through ultraviolet irradiation, configuration programming is achieved, and reversible adjustment of the stiffness is achieved through heating-cooling circulation; the driving method comprises the steps that firstly, configuration customization is conducted on the pre-deformed gripper through ultraviolet light; during grabbing, heating and softening are carried out, rapid quenching rigid locking is carried out after the material is attached to an object, and load enhancement and no-power-consumption keeping are achieved; locking can be unlocked and the object can be released by heating again. According to the flexible gripper, configuration customization, load lifting and passive maintenance integration of the flexible gripper is achieved, the technical bottleneck that a traditional flexible gripper is low in load and needs continuous energy supply is overcome, and the flexible gripper is suitable for high-end scenes such as precise workpiece operation and heterogeneous part grabbing.