A method for preparing nano-diamonds using femtosecond laser

A nano-diamond and femtosecond laser technology is applied in the field of nano-diamond material preparation, which can solve the problems of complex, dangerous and polluting synthesis process, and achieve the effect of large specific surface area and good chemical activity.

Inactive Publication Date: 2016-03-23
SOUTH CHINA NORMAL UNIVERSITY +1
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Problems solved by technology

The disadvantage of the detonation method is that the synthesis process is relatively complicated, and there is a certain degree of danger and pollution.

Method used

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  • A method for preparing nano-diamonds using femtosecond laser
  • A method for preparing nano-diamonds using femtosecond laser
  • A method for preparing nano-diamonds using femtosecond laser

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Embodiment Construction

[0032] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, and to analyze the advantages and spirit of the present invention, a further understanding of the present invention can be obtained through the following detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0033] The present invention includes an inverted microscope 300, see attached figure 1 As shown, the stage of the inverted microscope 300 is provided with a precision displacement platform 304, the precision displacement platform 304 is provided with a sample pool 303, the sample pool 303 is loaded with a diamond solution, and the inverted microscope 300 is provided with a symmetrical main optical path and an auxiliary optical path. The side of the main optical path of the inverted microscope 300 is provided with a focusing objective lens 302, and the side of the auxiliary...

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Abstract

The invention discloses a method for preparing nano-diamond through femtosecond laser, and provides a method for preparing the nano-diamond by generating shock wave in a diamond solution by using the nonlinear effect of the femtosecond laser, wherein the method is free of pollution, simple in process, safe to use and capable of being repeatedly used. A device used in the method comprises an inverted microscope, wherein a precision displacement platform is arranged on an objective table of the inverted microscope; a sample tank is arranged on the precise displacement platform; the inverted microscope is provided with a main light path and an auxiliary light path in symmetry; a focus objective is arranged on one side of the light main path of the inverted microscope; a collecting lens is arranged on one side of the auxiliary light path of the inverted microscope; the main light path and the auxiliary light path of the inverted microscope are overlapped with each other and focused on the sample tank. The nano-diamond disclosed by the invention is widely applied to fields of electronics, machines, chemicals, medicines and the like.

Description

technical field [0001] The present invention relates to the preparation of nano-diamond material, in particular to a kind of. In particular, the nonlinear effect of femtosecond laser is used to generate shock waves in aqueous solution to prepare nano-diamonds. Background technique [0002] Femtosecond laser is a new technology developed in recent years. The femtosecond laser is a kind of laser that operates in the form of pulses, and the duration is very short, from a few femtoseconds to hundreds of femtoseconds (1 femtosecond is 10 minus 15th power seconds), which is much faster than that obtained by electronic methods. The shortest pulse is thousands of times shorter. Femtosecond lasers have very high instantaneous power. For a laser pulse of 10 femtoseconds and 10 millijoules, the instantaneous power can reach more than 1012 watts. Due to the ultra-high instantaneous power of femtosecond laser pulses, it can often cause obvious nonlinear optical effects. However, dif...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/06B82Y30/00B82Y40/00C01B32/28
Inventor 降雨强徐亚辉程良辉石浩王旭高莹方义
Owner SOUTH CHINA NORMAL UNIVERSITY
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