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Method of transporting inert particles by using micro-nano motor cluster

A micro-nano particle, inert particle technology, applied in individual particle analysis, particle and sedimentation analysis, measuring devices, etc., can solve problems such as restricting operability and practical application, and achieve a wide range of applications, high control accuracy, and simple operation. Effect

Inactive Publication Date: 2019-11-08
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dependence on the three-dimensional complex oscillating magnetic field severely restricts its operability and practical application.

Method used

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  • Method of transporting inert particles by using micro-nano motor cluster
  • Method of transporting inert particles by using micro-nano motor cluster
  • Method of transporting inert particles by using micro-nano motor cluster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An isotropic TiO based 2 Cluster construction and phototactic motion control methods for micromotors:

[0037] Isotropic anatase TiO 2 Spherical microparticles, which are dispersed in deionized aqueous solution to form a particle suspension of 0.35mg / ml. Take a small amount of particle suspension and disperse it into a certain concentration of hydrogen peroxide fuel (0.25wt.%), and wait for about 1-5 minutes to obtain micron motor clusters formed by self-aggregation. Build a lighting platform, set the angle between the light and the horizontal plane as β (0°≤00.06W), and precisely control the TiO by controlling the light switch and light direction 2 Motion directions and trajectories of micromotor clusters.

[0038] Using a scanning electron microscope (SEM, S-4800, Hitachi Co., Ltd., Japan), an inverted fluorescence microscope (Leica DM 3000B), an X-ray diffraction analyzer (XRD Bruker D8 Advance X-ray diffractometer) and a thermogravimetric analyzer (NETZSEC, STA-...

Embodiment 2

[0051] The TiO that constructs cluster in embodiment 1 2 Micron particles were replaced by P25 (25nm) nano TiO 2 and large-sized TiO prepared by microemulsion method 2 For micron particles (5-20 μm), the two are respectively dispersed in deionized aqueous solution to form a particle suspension with a certain concentration. A small amount of particle suspension was dropped onto a glass substrate, and the particle aggregation was characterized by a fluorescence microscope (Leica DM3000B). The result is as Figure 10 shown

Embodiment 3

[0053] Adjust the particle suspension concentration in Example 1 to 0.15, 0.5, 0.75mg / ml respectively, repeat the steps of Example 1 above to obtain TiO 2 Micro-motor clusters, using a fluorescence microscope (Leica DM 3000B) to characterize particle aggregation, such as Figure 11 As shown, it shows that when the particle concentration is higher than 0.15mg / ml, clusters of different sizes can be obtained, and the higher the particle concentration, the larger the cluster size obtained.

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Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of micro-nano motors, and in particular relates to a method for transporting inert particles by clusters of micro-nano motors. Background technique [0002] There are a large number of organisms in nature. As individuals, they only have limited perception and action capabilities. However, biological clusters formed through local self-organization interactions can often exhibit group behaviors and collaborative functions that individuals do not possess, such as cooperative handling, Complex team tasks such as migration, foraging, nesting, and enemy defense. Micro-nanomotor is a kind of micro-nano machine whose size is at the micro-nano level and can convert other forms of energy (such as chemical energy) in the environment into its own kinetic energy (Nanoscale 2014, 6, 7175; Nanoscale 2013, 5, 4696; ACS Appl. Mater. Interfaces 2014, 6, 9897; Small 2014, 10, 4154; Chem. Rev. 2015, 115, 8704). Similar to org...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N15/10
CPCG01N15/00G01N15/10G01N2015/0003G01N2015/1027
Inventor 官建国张健华牟方志
Owner WUHAN UNIV OF TECH
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