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New magnetic pollen swimming micro-robot preparation method with pollen as template

A technology of micro-robots and pollen, applied in chemical instruments and methods, micro-manipulators, and magnetism of inorganic materials, can solve the problems of complex preparation, high cost, and low surface energy of constituent materials, and achieve good biocompatibility and biophase The effect of high capacity and simple preparation process

Pending Publication Date: 2019-11-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing swimming robot in the above-mentioned prior art has a single shape and complex preparation; the chemical composition and geometric form of the swimming robot are difficult to be accurate by the solvothermal method; the waste liquid treatment of the electrochemical deposition method is difficult and costly. High; the problem of low surface energy of the common components of the layer-by-layer assembly method, and then provide a new type of magnetic pollen swimming microrobot using pollen as a template

Method used

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  • New magnetic pollen swimming micro-robot preparation method with pollen as template
  • New magnetic pollen swimming micro-robot preparation method with pollen as template
  • New magnetic pollen swimming micro-robot preparation method with pollen as template

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preparation example Construction

[0032] Such as figure 1 , figure 2 and image 3 As shown, the preparation method of a new type of magnetic pollen-swimming micro-robot using pollen as a template involved in this embodiment includes the following steps:

[0033] 1. Removal of the outer pollen sheath coating by pollen pretreatment

[0034] Step 1: Soak 0.01g-0.1g of pollen in 5-20ml of chloroform / methanol mixture for 12-36 hours, then remove the solution by vacuum filtration;

[0035] Step 2: vacuum-dry the product obtained in Step 1 at 20-60° C. for 6-24 hours;

[0036] Step 3: The product obtained in Step 2 is immersed in 5-30 ml of hydrochloric acid solution for a second time for 0.5-2 hours, centrifuged to remove the supernatant, and dried in vacuum;

[0037] Step 4: Rinse the product obtained in Step 3 with deionized water for 2 to 5 times;

[0038] 2. In situ synthesis of magnetic particles on pollen

[0039] Step 5: put the product obtained in Step 4 into 0.01g / mL-0.5g / mL FeCl2 solution, shake for...

Embodiment 1

[0053] 1. Removal of the outer pollen sheath coating by pollen pretreatment

[0054] Step 1: soak 0.0654g of sunflower pollen in 10ml of chloroform / methanol mixture for 24 hours, then remove the solution by vacuum filtration;

[0055] Step 2: drying the product obtained in Step 1 in vacuum at 60° C. for 12 hours;

[0056] Step 3: The product obtained in step 2 is immersed in 10 ml of 1mol / L hydrochloric acid for a second time for 1 hour;

[0057] Step 4: Rinse the sunflower pollen grains dried in Step 3 with 10ml of deionized water three times;

[0058] 2. In situ synthesis of magnetic particles on sunflower pollen

[0059] Step 5: Prepare 0.02035g / mL FeCl 2 Solution: 0.2035g FeCl 2 Add 10 mL of degassed deionized water; prepare 0.0331 g / mL of FeCl 3 Solution: 0.35g FeCl 3 Add 10 mL of degassed deionized water;

[0060] Step 6: Put defatted sunflower pollen in FeCl 2 solution, shake for 1 hour, centrifuge, and remove the supernatant;

[0061] Step 7: Add the above-menti...

Embodiment 2

[0070] 1. Removal of the outer pollen sheath coating by pollen pretreatment

[0071] Step 1: Soak 0.05g of rapeseed pollen in 10ml of chloroform / methanol mixture for 24 hours, then remove the solution by vacuum filtration;

[0072] Step 2: drying the product obtained in Step 1 in vacuum at 60° C. for 12 hours;

[0073] Step 3: The product obtained in step 2 is immersed in 10 ml of 1mol / L hydrochloric acid for a second time for 1 hour;

[0074] Step 4: Rinse the rapeseed pollen grains dried in Step 3 with 10 ml of deionized water three times;

[0075] 2. In situ synthesis of magnetic particles on rapeseed pollen

[0076] Step 5: Prepare 0.02035g / mL FeCl 2 Solution: 0.2035g FeCl 2 Add 10 mL of degassed deionized water; prepare 0.0331 g / mL of FeCl 3 Solution: 0.35g FeCl 3 Add 10 mL of degassed deionized water;

[0077] Step 6: Put defatted rapeseed pollen in FeCl 2 solution, shake for 1 hour, centrifuge, and remove the supernatant;

[0078] Step 7: Add the above-mentione...

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Abstract

The invention provides a new magnetic pollen swimming micro-robot preparation method with pollen as a template, and belongs to the technical field of preparation and driving of magnetic swimming micro-robots. According to the method, an external pollenkitt coating is removed through pollen pretreatment, wherein the pollen is dipped in a chloroform / methanol mixed solution, and then vacuum suction filtration is conducted to remove the solution; vacuum drying is carried out, and then secondary dipping treatment is performed in hydrochloric acid; washing is conducted with deionized water; magneticparticles are synthesized in situ on the pollen; the product is placed into a FeCl2 solution and then put into a FeCl3 solution for oscillation and centrifuging, supernate is removed, deionized wateris added into a flask, and the product is heated under nitrogen; then the treated pollen is added, the pH value is adjusted, and stirring and heating are conducted; and pollen particles are kept by using magnets, the supernate is poured out, and a magnetic pollen swimming micro-robot is obtained. According to the method, the pollen serves as the template, and the made swimming micro-robot is diversified in shape and high in biocompatibility.

Description

technical field [0001] The invention relates to a novel preparation method of a magnetic pollen-swimming micro-robot using pollen as a template, and belongs to the technical field of preparation and driving of a magnetic-swimming micro-robot. Background technique [0002] Due to the application prospects of micro-robots in biomedicine and other fields, the synthesis of various special structures and micro-robots using special materials has become one of the current research hotspots. Pollen in nature has various shapes. We use pollen as a natural template to synthesize magnetic particles on the pollen in situ, so that we can get magnetic pollen swimming micromachines with various shapes, and the magnetic field can be controlled under the control of the magnetic field. The direction and speed of movement of pollen-swimming microrobots. The invention aims to solve the problems that the existing method for synthesizing the magnetic swimming micro-robot is complicated, the post...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J7/00B01L3/00H01F41/02H01F1/01
CPCB25J7/00B01L3/50273H01F41/02H01F1/01B01L2400/043
Inventor 王金梦吴志光贺强
Owner HARBIN INST OF TECH
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