Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Micro-nanoparticle having special morphology, preparation and use thereof

A particle and morphology technology, which is applied in the field of controllable preparation of micro-nanoparticles, can solve the problems that the controllable synthesis of laser ablation reaction morphology is not very prominent, and achieve the effects of low cost and simple operation.

Inactive Publication Date: 2008-12-24
SUN YAT SEN UNIV
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since ordinary laser ablation reactions are carried out under vacuum or rare gas conditions, most of the micro-nano structures generated by these reactions are stable structures formed by natural growth. Synthesis is not very prominent, so when people want to obtain a metastable structure with a certain shape, because their formation requires completion under certain metastable conditions, ordinary pulsed laser Ablation deposition technology is difficult to meet the requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Micro-nanoparticle having special morphology, preparation and use thereof
  • Micro-nanoparticle having special morphology, preparation and use thereof
  • Micro-nanoparticle having special morphology, preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, the equipment of the present invention includes laser 1 (adopting Nd:YAG pulsed laser, laser wavelength 532nm, pulse width 10ns, energy is 2.95mJ, frequency is 5Hz or 10Hz), focusing lens 2 (its focal length is 1000mm), reaction Target 3, base 4, electrode plate 5, quartz container 6, ultrasonic dispersion groove 7; First reaction target 3 is fixed on the base 4 and base is put into quartz container 6 together with reaction target, and around it ( The electrode 5 is arranged as above and below), and then an appropriate amount of liquid phase substance is injected; the entire quartz container is placed in the ultrasonic dispersion tank 7; the pulsed laser light generated from the laser 1 is focused by the focusing lens 2, and the well-converged laser beam is irradiated on the The surface of the target 3 is reacted to form a laser plasma reaction zone.

[0030] The square reaction target is a single crystal germanium block (purity greater than ...

Embodiment 2

[0037] Using the equipment used in Example 1, a high-purity (purity is 99.99%) single crystal germanium reaction target 3 is fixed on the polytetrafluoroethylene base 4, and the base 4 is put into the quartz container 6 together with the reaction target 3 , and then place the quartz container 6 in the ultrasonic dispersion tank 7. Slowly inject pure secondary deionized water into the quartz container 6, and immerse the target in the pure water. The laser optical path is adjusted so that the pulsed laser beam emitted by the laser 1 passes through the focusing lens 2 and then the focused beam is irradiated on the single crystal germanium reaction target 3 . Laser frequency selection 10Hz. In the process of pulse laser ablation, a DC voltage of about 35V is applied to the positive and negative ends of the electrode plate 5, and the ultrasonic dispersion tank 7 is operated at an oscillation frequency of 75kHz, so that the reaction product can be monodispersed. And not easy to re...

Embodiment 3

[0044] Using the equipment used in Example 1, a single crystal germanium block (purity greater than 99.99%) reaction target 3 with a thickness of 5 mm is fixed on the polytetrafluoroethylene base 4, and the base and the target are put into a tempered glass Container 6, and slowly inject high-purity water into the container, and then place the tempered glass container 6 into the ultrasonic dispersion tank 7. Adjust the laser optical path so that the pulsed laser beam emitted by the laser 1 is focused on the upper surface of the single crystal germanium block reaction target after passing through the total reflection mirror and the focusing mirror. A pair of electrode plates 5 are placed on both sides of the reaction target, one left and one right, so as to form a controllable electric field area near the reaction target. The laser frequency is selected as 10Hz or 5Hz. During the pulsed laser ablation process, the ultrasonic dispersion tank was operated at an oscillation freque...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameter lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of a micron-nano particle with a special morphology comprising the following operation steps: arranging a reaction target in the liquid substance, placing a reactor in an ultrasonic dispersing groove which works in a certain oscillation frequency during the whole reaction process, focusing a pulsed laser beam after passing a focusing lens on the surfacewhere the reaction target contacts with the liquid substance so as to generate plasma plumes on the reaction target surface, loading a controllable electric field by an electrode plate around the reaction region to control the reaction while the pulsed laser ablation is conducted, stopping the pulsed laser radiating the target materials after conducting the pulsed laser ablation reaction for 120-180 minutes, drying and separating the takeout reaction products and preparing the micron-nano particle with a special morphology. The micron-nano particle with a special morphology prepared by the above method can be applied in the field such as microelectronics processing, optics, biology, catalytic chemistry or medicine.

Description

technical field [0001] The invention belongs to the controllable preparation technology of micro-nano particles, in particular to a kind of micro-nano particles (high-purity germanium dioxide cubes) with special morphology prepared by pulse laser ablation reaction using electric field assisted control in liquid phase environment and shuttle) and its preparation method and application. Background technique [0002] In recent years, nanomaterials have shown bright application prospects in many fields such as optics, electronics, electromagnetism, biomedicine, etc. Experts and researchers have devoted themselves to the research work in this field. Scientific research over the years has shown that micro-nano particles will exhibit some new properties different from bulk materials, resulting in some new phenomena. These new properties and new phenomena are of great significance to people's understanding and utilization of nature, and will also have a revolutionary impact on fut...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01G17/02B82B1/00B82B3/00
Inventor 杨国伟刘璞陈辛夷
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com