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Preparation of liquid metal composite polymer brush motor and its application as a nanomotor

A composite polymer and liquid metal technology, applied in the field of polymer brush motor preparation, can solve problems such as difficult liquid metal compounding, difficult to accurately control the chemical composition and geometric shape of the motor, and difficult to treat waste liquid by electrochemical deposition. The effect of broad application prospects

Active Publication Date: 2020-01-03
HARBIN INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

However, they all have their own shortcomings, and it is difficult to apply to liquid metals: the solvothermal method is difficult to accurately control the chemical composition and geometry of the motor; the electrochemical deposition method is difficult to treat waste liquid and the cost is high; the common composition of the layer-by-layer assembly method Substances with low surface energy are difficult to combine with liquid metals

Method used

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  • Preparation of liquid metal composite polymer brush motor and its application as a nanomotor
  • Preparation of liquid metal composite polymer brush motor and its application as a nanomotor
  • Preparation of liquid metal composite polymer brush motor and its application as a nanomotor

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[0021] A method for preparing a liquid metal composite polymer brush motor involved in this embodiment, the steps are as follows,

[0022] Step 1. Weigh 0.1g~2.0g of ferrous chloride and 0.2g~2.5g of ferric chloride in 40ml~100ml of deionized water to make a solution, add the solution into a flask and heat to 65°C~85°C, add 1ml ~ 10ml of ammonia water, continue to heat for 20min ~ 60min after adding, the product is attracted by a magnet and washed 6 ~ 10 times, then add a stabilizer, the stabilizer is sodium citrate, 4ml of sodium citrate with a concentration of 0.1 ~ 1g / ml is stirred After adding, continue to heat for 40min to 200min to obtain magnetic nanoparticles;

[0023] Step 2. Assembly of magnetic nanoparticles: using porous anodized aluminum, polycarbonate (PC) or porous silicon wafer as a template, dilute the concentration of magnetic nanoparticles obtained in step 1 to 0.1-5mg / mL; put the corresponding template into In the diluted magnetic nanoparticle solution, ta...

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Abstract

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.

Description

technical field [0001] The invention relates to the preparation of a liquid metal composite polymer brush motor and its application as a nanometer motor, belonging to the technical field of preparation methods and application of the polymer brush motor. Background technique [0002] Due to the application prospects of micro-nano motors in biomedicine and other fields, the synthesis of various special structures and micro-nano motors using special materials has become one of the current research hotspots. And because of the low Reynolds number conditions at the micro-nano scale, the driving mode and motion behavior of the motor have become important criteria for evaluating the performance of the motor. Solvothermal method, electrochemical deposition method and layer-by-layer self-assembly method are common methods for preparing micro-nano motors. However, they all have their own shortcomings, and it is difficult to apply to liquid metals: the solvothermal method is difficult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B82Y30/00B82Y40/00B82Y25/00
Inventor 贺强王位郭斌
Owner HARBIN INST OF TECH
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