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Micro-nanometer material as well as preparation method, device and application thereof

A technology of micro-nano and application devices, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of micro-nano materials that have not been discovered, and achieve the effect of low cost and simple operation

Active Publication Date: 2012-09-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No method and device for preparing micro-nano materials in a liquid environment using magnetic field-assisted pulsed laser ablation has yet been found

Method used

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  • Micro-nanometer material as well as preparation method, device and application thereof
  • Micro-nanometer material as well as preparation method, device and application thereof
  • Micro-nanometer material as well as preparation method, device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, this example provides a device for preparing micro-nano materials in liquid phase, the device includes laser 1 (using Nd:YAG pulsed laser, laser wavelength 532nm, pulse width 10ns, energy 100mJ, frequency 5Hz) , a total reflection mirror 2, a focusing lens 3, a reaction target 4, a reaction vessel 5, a magnetic field application device 6, the reaction target 4 is arranged in the reaction vessel 5, there is a liquid phase substance in the reaction vessel 5, and the liquid phase substance immerses the reaction target 4, The magnetic field applying device 6 generates a magnetic field around the reaction vessel 5, and the laser light generated by the laser 1 passes through the total reflection mirror 2 and the focusing lens 3 and then focuses on the surface of the reaction target 4. During operation, the magnetic field and the laser light source act on the reaction target at the same time. The reaction container 5 adopts a quartz glass container. ...

Embodiment 2

[0045] The structure of this embodiment is the same as that of Embodiment 1 except for the following features: the reaction target used in this embodiment is a circular high-purity germanium target (99% pure), with a diameter of 25 mm and a thickness of 15 mm. The laser uses Nd:YAG pulsed laser, the laser wavelength is 532nm, the pulse width is 10ns, the energy is 50mJ, and the frequency is 1Hz. The reaction vessel is a quartz glass vessel. The liquid phase material adopts deionized aqueous solution.

[0046] During the preparation process, the magnetic field intensity was increased to 1T, so that a uniform magnetic field was formed around the reaction target; the pulsed laser power was turned on, and the pulsed laser ablation deposition reaction was performed.

Embodiment 3

[0048] The structure of this embodiment is the same as that of Embodiment 1 except for the following features: the reaction target used in this embodiment is a circular high-purity gold target (99.999% pure) with a diameter of 5 mm and a thickness of 3 mm. The laser uses Nd:YAG pulsed laser, the laser wavelength is 532nm, the pulse width is 10ns, the energy is 800mJ, and the frequency is 10Hz. The reaction vessel is a quartz glass vessel. The liquid phase material adopts deionized aqueous solution.

[0049] During the preparation process, the magnetic field intensity was increased to 9T, so that a uniform magnetic field was formed around the reaction target; the pulsed laser power was turned on, and the pulsed laser ablation deposition reaction was performed.

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Abstract

The invention discloses a method and device for preparing a micro-nanometer material, the micro-nanometer material prepared by using the method and the device and the application of the micro-nanometer material in the fields of magnetics, medicines and biology. The device is characterized in that a magnetic field is produced at the periphery of a reaction vessel through a magnetic field applying device. The method is characterized in that based on a pulse laser ablation method in a liquid phase, a magnetic field is applied to the periphery of the reaction vessel, and during preparation, the magnetic field and a laser source are simultaneously started. In the preparation method provided by the invention, the magnetic field can be utilized to effectively control the assembly and growth of the micro-nanometer material, and the micro-nanometer material grows in the magnetic field environment, therefore, the prepared micro-nanometer material is different from the traditional micro-nanometer material in optical, electric and magnetic properties. According to the difference in the properties, the micro-nanometer material provided by the invention can be applied to the fields of magnetics, medicines, biology and the like.

Description

technical field [0001] The invention relates to the field of preparation of micro-nano materials, in particular to a preparation method of micro-nano materials, a preparation device, prepared micro-nano materials and applications of the micro-nano materials. Background technique [0002] Nanomaterials refer to materials with a size ranging from 1 to 100 nm. Micro-nano materials that scale in 10 -9 10 -6 materials in the m range. After the particle size is less than 100nm, the number of surface atoms of ions is comparable to the number of atoms in their bodies. This property leads to changes in the structure and energy state of nanomaterials that are different from the small size, large surface and quantum tunneling effects of traditional bulk materials, resulting in many unique physical properties such as light, electricity, magnetism, and mechanics. chemical properties. For example, nano-iron has magnetism, and the original non-conductive material has conductivity and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/08B82Y40/00B82Y30/00
Inventor 杨国伟梁英刘璞李红波
Owner SUN YAT SEN UNIV