阅读说明：本技术 一种稀薄气体中的石墨烯激光推进方法 (Graphene laser propulsion method in rarefied gas ) 是由 王雷 王霞 于 2020-05-14 设计创作，主要内容包括：本发明属于激光技术领域,涉及一种稀薄气体中的石墨烯激光推进方法,将石墨烯材料置于气压不高于10<Sup>3</Sup>Pa的稀薄气体中,利用激光束辐照稀薄气体中的石墨烯材料,实现石墨烯材料在稀薄气体中的激光推进；采用激光辐照的方法实现激光束对稀薄气体中石墨烯材料的直接推动,并以石墨烯为载具还能实现对其它材料的直接推动,不需要任何燃料即可实现石墨烯或者其它关联物体的非接触式推动,推动力远远大于光压(辐射压),整个过程简单高效,绿色环保,应用前景广阔。(The invention belongs to the technical field of laser, and relates to a graphene laser propulsion method in a rarefied gas, wherein a graphene material is placed at a gas pressure of not more than 10 3 In the Pa diluted gas, irradiating the graphene material in the diluted gas by using a laser beam to realize laser propulsion of the graphene material in the diluted gas; the laser irradiation method is adopted to realize the direct pushing of the laser beam to the graphene material in the rarefied gas, the graphene is used as a carrier, the direct pushing of other materials can also be realized, the non-contact pushing of the graphene or other related objects can be realized without any fuel, the pushing force is far greater than the light pressure (radiation pressure), the whole process is simple and efficient, the environment is protected, and the application prospect is wide.)

1. A laser propulsion method of graphene in thin gas is characterized in that graphene materials are placed at a gas pressure of not higher than 10³And in the Pa rarefied gas, irradiating the graphene material in the rarefied gas by using a laser beam to realize laser propulsion of the graphene material in the rarefied gas.

2. The method of claim 1, wherein the dilute gas comprises air, argon, or nitrogen.

3. The laser propulsion method of graphene in a rarefied gas according to claim 1, characterized in that the size of the graphene material is nano-scale, micro-scale, millimeter-scale, centimeter-scale or meter-scale.

4. The method of claim 1, wherein the mass and volume of the graphene material are determined by the spot size of the laser beam, the laser power density, the gas pressure of the dilute gas, and the type of the dilute gas.

5. The laser propulsion method of graphene in a rarefied gas according to claim 1, characterized in that the laser beam is a continuous laser or a pulsed laser; the wavelength is in the ultraviolet to infrared band.

6. The laser propulsion method of graphene in a lean gas according to claim 1, wherein the laser propulsion distance of the graphene material in the lean gas can reach a meter level or more.

7. The laser propulsion method of graphene in lean gas according to claim 1, wherein the graphene material is free from any loss or damage in the laser propulsion process, and continuous light propulsion can be achieved without any fuel supplement.

The technical field is as follows:

the invention belongs to the technical field of laser, and relates to a laser propulsion method for graphene in thin gas.

Background art:

since the concept of solar sail is proposed, the light radiation propulsion has attracted great interest to the scientific community and the public, and the greatest advantage of the radiation pressure (light pressure) propulsion is that no additional fuel or energy is needed to be carried, so long as the light is irradiated; but the biggest disadvantage is that the radiation pressure is extremely small, and the strong radiation thrust is difficult to generate, thereby limiting the practical application of the radiation thrust. Until now, the laser ablation propulsion technology has attracted attention at the end of the 20 th century, and the basic principle is that an ablation substance (target) is heated under laser irradiation to generate high-temperature plasma, and the high-temperature plasma is ejected along the direction opposite to the incident direction of a light beam to generate a propulsion force. So far, macro sightseeing propulsion technology with large thrust without additional fuel carrying is not reported.

The invention content is as follows:

the invention aims to overcome the defects in the prior art, designs and provides a graphene laser propulsion technology in a thin gas, and can realize laser propulsion of a graphene material and related objects thereof in the thin gas.

In order to achieve the purpose, the specific process of the invention is as follows: placing the graphene material at an air pressure of not more than 10³And in the Pa rarefied gas, irradiating the graphene material in the rarefied gas by using a laser beam to realize laser propulsion of the graphene material in the rarefied gas.

The rarefied gas of the present invention includes, but is not limited to, air, argon or nitrogen.

The graphene material provided by the invention has the size of nano-scale, micron-scale, millimeter-scale, centimeter-scale or meter-scale.

The quality and volume of the graphene material are determined by factors such as the spot size of a laser beam, the laser power density, the gas pressure of the thin gas, the type of the thin gas and the like.

The laser beam is continuous laser or pulse laser; the wavelength is in the ultraviolet to infrared range, preferably the visible range.

The laser propelling distance of the graphene material in the rarefied gas can reach more than meter level, the propelling distance is not limited in principle, and the attenuation of the graphene material only comes from weak loss of laser energy during transmission in the rarefied gas.

The graphene material disclosed by the invention has no loss or damage in the laser propulsion process, and can realize continuous light propulsion without supplementing any fuel.

The graphene material can also be used as a carrier of other objects to realize laser propulsion in a dilute gas, such as embedding other materials (such as metal powder) in graphene, or connecting graphene and other materials (such as magnesium aluminum alloy), but the other materials are not limited to the listed materials, and other materials or objects not listed are also applicable.

Compared with the prior art, the method overcomes the defect that the block material is difficult to effectively push due to small light radiation pressure in the prior art, adopts a laser radiation method to directly push the graphene material in the rarefied gas by the laser beam, can also directly push other materials by taking the graphene as a carrier, can realize non-contact pushing of the graphene or other related objects without any fuel, has the driving force far greater than the light pressure (radiation pressure), and has the advantages of simplicity, high efficiency, environmental protection and wide application prospect.

Description of the drawings:

fig. 1 is a flow chart of the working principle of the graphene laser propulsion technology in the rarefied gas.

FIG. 2 is a design drawing of an experimental apparatus according to example 1 of the present invention, in which 1-a laser, 2-a laser beam, 3-a transparent airtight container whose gas pressure is adjustable, 4-a graphene material, 5-a suspension wire, 6-a scaffold, and 7-a dilute gas.

FIG. 3 is a photograph of a real object of the experimental apparatus in example 1 of the present invention.

Fig. 4 is a photograph of example 1 of the present invention when the laser (from right to left) pushes the graphene away from the equilibrium position at an air pressure of 8 Pa.

Fig. 5 is a photograph of graphene in a static state when the air pressure is 2Pa in example 1 of the present invention.

The specific implementation mode is as follows:

in order to better explain the present invention and to facilitate understanding of the technical solutions, the present invention is further described in detail by the following embodiments in conjunction with the accompanying drawings.