46 results about "Nanomotor" patented technology

The invention discloses a Janus particle with double properties and a preparation method thereof. By employing cross-linked polymer colloidal particles as seeds and through a seed emulsion polymerization method, Janus particles with double properties are obtained on the basis of a phase separation mechanism; inorganic, metal and metal oxide compounded Janus particles with electrical, magnetic, optical properties are obtained through functional group modification and composition of function materials and can be used for the material field. The Janus particles have an emulsifying property in organic, inorganic dispersed phases or different organic dispersed phases and meanwhile the Janus particles have a great application prospect in the aspects of self-assembly, superhydrophobicity, nanomotor and the like. The preparation method provided by the invention is easy to operate, has the feasibility of mass production and can adapt to different needs by modification and composition of function materials.

A molecular nanomotor useful for translocating polynucleotides. The nanomotor is a multimolecular complex fueled by ATP hydrolysis. One of the motor components is an ATP-binding RNA molecule that participates in ATPase activity.

The invention discloses a mesoporous silica nanomotor, and a preparation method and the application thereof, relates to a motor, a preparation method and the application thereof, and aims at solving the technical problem of large size of the existing motor. The mesoporous silica nanomotor adopts mesoporous silica particles with the particle sizes of 50 to 90 nm, and a platinum layer is sputtered on the partial surface of the nanomotor. The preparation method comprises the following steps: firstly, synthesizing mesoporous silica nanoparticles, secondly, performing hydrophilic treatment to silicon chips, thirdly, dripping silicon dioxide nanoparticle dispersion liquid onto the hydrophilic silicon chips, drying, and sputtering platinum onto the silicon chips, on which a single-particle layer is arranged, obtained in step III, and fourthly, drying after ultrasonic vibration for shaking off, so as to obtain the mesoporous silica nanomotor. The application is to put the mesoporous silica nanomotor into hydrogen peroxide solution to be used. The nanomotor has Yin and Yang structural characteristics and a carrying function, the preparation method is simple to operate, and the primary synthetic amount is large. The mesoporous silica nanomotor can be applied to fields of biomedical, chemical and environment detection.

The invention relates to a preparation method of an artificial microtube and the application of the artificial microtube as a micromotor. The invention relates to the preparation method and the application of the artificial microtube and solves the technical problems of high cost, small one-time synthetic quantity and large difficulty of the operation requirement of a particle beam injection method in the existing electrochemical deposition method for synthesizing a micro nano motor. The method comprises the steps of: preparing metal catalytic particles, assembling polyelectrolyte into the holes of a template layer by layer and assembling the metal catalytic particles to obtain the artificial microtube. For the application of the artificial microtube as the micromotor, the artificial microtube is put into a hydrogen peroxide solution, oxygen is generated via catalyzing hydrogen peroxide, and bubbles are used as impetus to drive the motor. The method is easy to operate, controllable in sizes, low in cost and large in one-time synthetic quantity. The artificial microtube provided by the invention can be used as the micromotor in the medical field.

The invention discloses an ultrasonic precision micro-fluidic chip based on a nano motor array and an implementation method thereof. The ultrasonic precision micro-fluidic chip comprises a substrate,a cover plate, a piezoelectric transducer, a film fixed with a nano motor, a liquid inlet and outlet pipe and a liquid medium. The piezoelectric transducer excites and drives the whole micro-fluidic chip to vibrate at ultrasonic frequency, a specific acoustic flow field is generated in the micro-channel, meanwhile, a catalyst component contained in the nano-motor promotes the substrate to be decomposed to generate bubbles, and vibration of the bubbles in the acoustic flow field is used for controlling small particles around the bubbles to move along a specific track. The liquid medium is catalyzed by the nano motor array to be decomposed to generate bubbles, and directional movement of tiny particles is controlled by utilizing local acoustic flow field change caused by bubble vibration. According to the micro-particle motion control mode, bubble vibration in the acoustic flow field is used as a power source, the motion speed of the micro-particles is effectively increased, the micro-particles of various shapes and sizes can be controlled, no special requirement is needed for the material of the controlled micro-particles, and thus the application range is wide.

The invention relates to a light-driven nanomotor of a janus structure. A main body of the light-driven nanomotor comprises working substances, metal films are evaporated on partial surfaces of the working substances, therefore, the janus structure partially covering the working substances is formed, and the working substances of the surplus surfaces can have a lighting decomposition reaction to generate air driving force. The light-driven nanomotor of the janus structure has the advantages that the light driving mode is extremely simple, convenient and controllable; a preparation method of the nanomotor is also relatively simple; the light-driven nanomotor is not limited by a solution environment, the motion direction has the controllability, and fast and accurate directional carry is hopefully achieved.

The invention relates to a nano motor based on inchworm motion, and the nano motor provided by the invention comprises a box body, wherein a supporting base is arranged at the middle part of the interior of the box body; a driving shaft is arranged on the supporting base; two sides of the driving shaft are provided with two driver pressing sheets which are equal in size and mutually symmetrical; the two driver pressing sheets are respectively connected with the box body through adjusting clamping screws; one side, which is close to the driving shaft, of each driver pressing sheet is provided with a driver; one side, which is close to the driving shaft, of each driver is provided with a first clamping device and a second clamping device which are equal in size and mutually parallel; both the first clamping devices and the second clamping devices comprise piezoelectric ceramic sheets and metal blocks which are fixed through epoxy resin; the piezoelectric ceramic sheets and the driver pressing sheets are fixed through the epoxy resin; one side, which is close to the driving shaft, of each metal block is in an arc shape which corresponds to the shape of the external surface of the driving shaft; and the driving shaft is clamped and fixed through the metal blocks. The inchworm motion-based nano motor has the beneficial effects that oscillation caused by voltage change is avoided and the stability of the nano motor is enhanced.

A method for decontamination of a toxic substance is disclosed. The method includes fabricating a plurality of nanomotors, and putting the plurality of nanomotors in contact with a contaminant solution comprising the toxic substance. Fabricating the plurality of nanomotors includes preparing a mesoporous silica template, forming the plurality of nanomotors within the mesoporous silica template, and separating the plurality of nanomotors from the mesoporous silica template. The mesoporous silica template includes a plurality of channels, where each channel of the plurality of channels have a diameter less than about 50 nm and a length of less than about 100 nm, and each nanomotor of the plurality of nanomotors is formed within a channel of the plurality of channels. Putting the plurality of nanomotors in contact with the contaminant solution includes adding hydrogen peroxide (H₂O₂) and the plurality of nanomotors to the contaminant solution.

A nanoscale nanocrystal which may be used as a reciprocating motor is provided, comprising a substrate having an energy differential across it, e.g. an electrical connection to a voltage source at a proximal end; an atom reservoir on the substrate distal to the electrical connection; a nanoparticle ram on the substrate distal to the atom reservoir; a nanolever contacting the nanoparticle ram and having an electrical connection to a voltage source, whereby a voltage applied between the electrical connections on the substrate and the nanolever causes movement of atoms between the reservoir and the ram. Movement of the ram causes movement of the nanolever relative to the substrate. The substrate and nanolever preferably comprise multiwalled carbon nanotubes (MWNTs) and the atom reservoir and nanoparticle ram are preferably metal (e.g. indium) deposited as small particles on the MWNTs. The substrate may comprise a silicon chip that has been fabricated to provide the necessary electrodes and other electromechanical structures, and further supports an atomic track, which may comprise an MWNT.

The invention relates to the field of micro-nano motor application, and particularly relates to a photoacoustic signal detection and imaging method based on a micro-nano motor, which comprises the following steps: S1, preparing a photoacoustic signal detection and imaging system based on the micro-nano motor for detection and imaging; S2, generating a magnetic field by an electromagnetic coil to drive and guide the micro-nano motor; S3, irradiating the micro-nano motor through a nanosecond pulse near-infrared laser light source, exciting thermoelastic expansion of surrounding liquid based on the plasmon effect of a photothermal conversion metal layer, periodically irradiating the micro-nano motor to generate photothermal conversion, and generating an ultrasonic photoacoustic signal; S4, after detecting the ultrasonic photoacoustic signal by the ultrasonic detector, amplifying and filtering the ultrasonic photoacoustic signal, and transmitting the signal to a started image reconstruction computer for algorithm imaging. The method can achieve the tracking, positioning and imaging of the micro-nano motor in the organism, and breaks through the technical bottleneck that the micro-nanomotor is difficult in tracking and imaging in the organism.

The present invention provides an enzyme-powered nanomotor, comprising a particle with a surface, an enzyme, and a heterologous molecule; characterized in that the enzyme and the heterologous molecule are discontinuously attached over the whole surface of the particle. The invention also provides the nanomotor for use in therapy, diagnosis and prognosis, in particular, for the treatment of cancer. Additionally, the invention provides the use of the nanomotor for detecting an analyte in an isolated sample.

The invention provides a preparation method of a multi-stage micro-nano motor. By the preparation method, a novel chemically-driven micromotor loaded with a magnetic field-driven nanomotor is prepared. The multi-stage micro-nano motor can move in a chemical field firstly and gradually release the magnetically-driven nanomotor and the released nanomotor can move under the driving of a magnetic field so as to perform own target tasks. By the preparation method, the placement position of the nanomotor can be further accurately controlled, so that the small motor operates in a finer working area;meanwhile, small motors with different driving ways can be loaded, so that the application value of the multi-stage micro-nano motor in more aspects is achieved.

The invention discloses a miniature nanomotor based on a shearing piezoelectric effect. The nanomotor comprises a clamping mechanism, a shearing piezoelectric ceramic actuator, a pre-tightening mechanism and an output piece. The shearing piezoelectric ceramic actuator is in contact with the driving surface of the output piece through the pre-tightening force of the pre-tightening mechanism applied to the clamping mechanism. The output piece is of a hollow structure, and all surfaces of the output piece parallel to the proceeding direction are hollow board surfaces except the driving surface. Therefore, the weight of the output piece can be reduced to the largest extent, the driving capability of a shearing piezoelectric stacking motor is improved, and the motor can walk under low voltage under lower temperature. Meanwhile, the nanomotor has a larger stepping journey and can drive the output piece and parts on the output piece to achieve large-journey advancing and retreating in a centimeter range.

The invention discloses a micro nano motor based on shearing piezoelectric stacks. The motor comprises a substrate, two shearing piezoelectric stacks, a rigid guidance groove, an adjustable flexible force transmission block and a slide rod. The positive electrode of one of the shearing piezoelectric stacks is short circuited with the negative electrode of another shearing piezoelectric stack, and a voltage driving signal is imposed on the shearing piezoelectric stacks. The shearing piezoelectric stacks are parallely fixed on the substrate according to a telescoping direction. The rigid guidance groove and the adjustable flexible force transmission block are respectively adhered to opposite faces of free ends of the shearing piezoelectric stacks. Two edges of the rigid guidance groove and the adjustable flexible force transmission block are used for fixing the slid rod between the shearing piezoelectric stacks in a squeezing manner. The squeezing force pressure meets the condition that the maximum static frictional force between the force transmission block and the slide rod is slightly larger than the gravity of the slide rod. According to the invention, the rigid guidance groove and the adjustable flexible force transmission block are used for fixing the slid rod, so the motor is simple in structure, easy to process, highly rigid and suitable for use in a scanning probe microscope and a fine tuning positioning device of a precision optical system under an extreme condition.

The invention discloses a preparation method of a nano motor adsorbing material, which comprises the following steps of: by using Fe3O4 as a carrier, reducing and loading C on the surfaces of Fe3O4 nanoparticles to obtain Fe3O4@C, adsorbing and reducing TiO2 and transition metal oxide and wrapping the surface of magnetic Fe3O4 with the TiO2 and transition metal oxide to obtain Fe3O4@TiO2<-> metaloxide microspheres; and then mixing lauryl sodium sulfate, a quaternary ammonium salt organic matter solution, a polycaprolactone solution and a chloroform solution containing Fe3O4@TiO2<-> metal oxide microspheres, and reacting to obtain the nano motor adsorbing material with an asymmetric shape. The material prepared by the method disclosed by the invention can generate bubble propelling motionby decomposing hydrogen peroxide, and can also generate concentration gradient of a photocatalytic product for motion by utilizing photocatalytic degradation of organic pollutants in wastewater so asto promote adsorption of the adsorbing material to arsenic elements in the environment; meanwhile, due to the existence of ferroferric oxide, a nano motor can be easily recycled by utilizing the magnetism of ferroferric oxide, so that the nano motor can be recycled; and the nano motor has a good adsorption effect on arsenic elements in a water environment, and has good separability and reusability.

The invention discloses a biocompatible iron-manganese dioxide system micro-nano motor and a preparation method thereof, belongs to the field of micro-motor preparation and application, and can greatly reduce the manganese content in the micro-nano motor and improve the biocompatibility of the micro-nano motor under the condition of not reducing the movement speed of the micro-nano motor. According to the invention, the preparation method combines electrochemical deposition and an ultrasonic field, and comprises the steps of firstly, supporting an outer polyethylene dioxythiophene (PEDOT) layer and a middle Fe layer through electrochemical deposition, and then introducing an ultrasonic field while electrochemically depositing an inner MnO2 layer. The obtained micro-nano motor is of a three-layer hollow tubular structure, the content of manganese is reduced from 17.68% to 4.71%-11.33%, but the movement speed can still reach 300-700[mu]m/s, so that the manganese content of the micro-nanomotor is greatly reduced under the condition that the movement speed of the micro-nano motor is not reduced, and the biocompatibility of the micro-nano motor is improved.

The invention discloses a method for preparing a porous adsorption material by a magnetic control nano motor cluster gel method. The method comprises the following steps: adding an alcohol-acid organic mixture into 700-1500 DEG C smelting slag, sufficiently mixing and reacting, uniformly mixing the reaction solution and a silicon-coated magnetic micro-nano particle solution after the reaction is completed, adding the mixture into a surfactant solution, and in the presence of a magnetic field, reacting for 0.5-24 hours at the temperature of 80-180 DEG C, aging for 16-24 hours from the room temperature to 30 DEG C, collecting solids, heating and drying to obtain the porous adsorption material. The method overcomes the problems of low utilization rate of slag, single function of preparing the adsorption material and low adsorption capacity at present, realizes maximum utilization of solid waste resources, and has good environmental benefits, social benefits and economic benefits.

The invention provides preparation of a liquid metal combination polymer brush motor and application of the polymer brush motor serving as a nanomotor. The method comprises the steps that firstly, magnetic nanoparticles are prepared; secondly, the magnetic nanoparticles are loaded in a porous template; thirdly, liquid metal is fixed in the porous template; fourthly, one side of the liquid metal inthe template is replaced with metal; fifthly, polymer brushes are synthesized; and sixthly, the template is removed to obtain the liquid metal combination polymer brush motor. The liquid metal combination polymer brush motor serves as the nanomotor to be disposed in fluid, a periodic variation magnetic field is applied to the fluid, the liquid metal combination polymer brush motor interacts withfluid media due to unsymmetrical configuration of the liquid metal combination polymer brush motor and unsymmetrical distribution of the polymer brushes, and effective motion of the motor in the longaxis direction is realized. The liquid metal combination polymer brush motor has the advantages that sizes are controllable and uniform, stimulation responsiveness is optional, the preservation time is long, the number is large and the like, and has broad application prospects in biomedicine, environmental governance, bionics and other fields.

The invention discloses a movement method of a micro-nano motor and a directional movement model of the micro-nano motor. The movement method of the micro-nano motor comprises the steps of dispersing the micro-nano motor in the main body liquid crystal; applying illumination to the micro-nano motor so as to enable the micro-nano motor to be subjected to self-thermophoresis in the main body liquid crystal; and applying voltage to the main body liquid crystal, changing the orientation of the main body liquid crystal, and then driving the micro-nano motor to directionally rotate in the movement direction. Illumination is applied to the micro-nano motor, so that the micro-nano motor generates self-thermophoresis. Under the condition, when the micro-nano motor moves in the main body liquid crystal to a position where the movement direction of the micro-nano motor needs to be changed, the orientation direction of the main body liquid crystal is changed through voltages on the two sides of the main body liquid crystal, and the movement direction of the micro-nano motor is deflected under the driving of rotation of the main body liquid crystal, so that the directional movement of the micro-nano motor under self-thermophoresis is controlled.

The invention discloses a method of transporting inert particles by using a micro-nano motor cluster. Anatase TiO2 micro-nano particles are dispersed in deionized water to form a suspension and the suspension is added dropwise on a glass substrate and standing is performed for 1 to 5 minutes to obtain a micro-nano motor cluster; and hydrogen peroxide is added as a fuel, movement of the micro-nanomotor cluster is controlled by controlling a light source switch, a light source direction, light source intensity, and illumination time, a target inert particle is coerced and transporting of the inert particle is realized. According to the invention, the motor cluster is controlled to carry out precise capturing, transportation and releasing of the inert particles by controlling the illumination direction, the illumination intensity and the illumination time, thereby prompting actual application of the micro-nano motor in the micro-area space detection, sensing, cooperative capturing, transportation and assembling fields.

The invention discloses a self-driven Au-Zn nano motor as well as a preparation method and application thereof. The self-driven Au-Zn nano motor is tubular, the length of the self-driven Au-Zn nano motor is 3-7 microns, the outer diameter of the self-driven Au-Zn nano motor is 320-500 nm, the inner diameter of the self-driven Au-Zn nano motor is 150-260 nm, the atomic percent of Au is 85-95%, and the atomic percent of Zn is 5-15%. No bubbles are generated in the pushing process of the motor, and the influence of the bubbles on the movement of the self-driven Au-Zn nano motor can be avoided. The interaction mode of the self-driven Au-Zn nano motor and the passive particles is switched between attraction and repulsion, a new thought can be provided for formation of tissue behaviors, aggregates and cell component clusters of active materials in biological evolution, and in addition, the self-driven Au-Zn nano motor can also be applied to biological molecule detection and biological information collection.