阅读说明：本技术 一种光压驱动纳米发动机及其驱动方法 (Light pressure driven nano engine and driving method thereof ) 是由 孙若为 孙一绮 于 2019-04-15 设计创作，主要内容包括：本发明属于纳米技术领域,尤其涉及一种光压驱动纳米发动机及其驱动方法。本发明提供的纳米发动机包括机身和固定在所述机身上的若干个机翼；所述机翼包括与所述机身相连接的机翼框架和覆盖在所述机翼框架上的镀铝膜。本发明提供的纳米发动机设置有镀铝膜材质的机翼,其在被激光束照射时,会在机翼表面形成光压现象,在光压的推进作用下,纳米发动机可沿轨道高效、稳定地运行。本发明提供的纳米发动机可利用光压进行驱动,驱动过程中不会生成污染物,安全环保。而且该纳米发动机的动力大小可以通过改变激光束的强度来进行调控,控制比较简单方便,易于执行。(The invention belongs to the technical field of nanometer, and particularly relates to a light pressure driven nanometer engine and a driving method thereof. The nano engine provided by the invention comprises a fuselage and a plurality of wings fixed on the fuselage; the wing comprises a wing frame connected with the fuselage and an aluminizer covering the wing frame. The nano engine provided by the invention is provided with the wing made of the aluminum-plated film material, and when the wing is irradiated by laser beams, a light pressure phenomenon can be formed on the surface of the wing, and the nano engine can efficiently and stably run along the track under the propelling action of the light pressure. The nano engine provided by the invention can be driven by light pressure, and pollutants are not generated in the driving process, so that the nano engine is safe and environment-friendly. And the power of the nano engine can be regulated and controlled by changing the intensity of the laser beam, and the control is simple and convenient and is easy to implement.)

1. A light pressure driven nanometer engine comprises a fuselage and a plurality of wings fixed on the fuselage;

the wing comprises a wing frame connected with the fuselage and an aluminizer covering the wing frame.

2. The nanoengine of claim 1, wherein the wing frame is fan-shaped; the radius of the fan shape is 100-1000 nm; the central angle of the fan shape is 80-120 degrees.

3. The nanogenerator of claim 1, wherein the thickness of the aluminized film is 15 to 30 nm.

4. The nanogenerator of claim 1, wherein the aluminum-plated film has a reflectance of 0.8 to 0.95.

5. The nanoengine of claim 1, wherein the wing frame is made of TiO₂Nanotube enclosure of said TiO₂The radius of the nanotube is 5-20 nm.

6. The nano-engine of claim 1, wherein the body is a hollow structure, and the wall thickness of the body is 10-50 nm.

7. The nanoengine of claim 1, wherein the fuselage is shaped as a spheroid of revolution; the radius of the major axis of the ellipsoid of revolution is 100-140 nm, and the radius of the minor axis is 60-90 nm.

8. The nanoengine of claim 7, wherein the wings are perpendicular to a long axis of the fuselage.

9. The nanoengine of claim 8, wherein the plurality of airfoils are disposed on a same plane.

10. A driving method for driving a nano engine by light pressure comprises the following steps:

vertically irradiating a laser beam onto the wing of the nano engine as claimed in any one of claims 1 to 9, and forming light pressure on the surface of the wing to push the nano engine to move.

Technical Field

The invention belongs to the technical field of nanometer, and particularly relates to a light pressure driven nanometer engine and a driving method thereof.

Background

Nanotechnology is one of the fastest developing and most recent technologies in the 21 st century. The rise of nanotechnology injects fresh blood into the biomedical field, and with the development of nanotechnology in a new and new day, a nanoscale robot becomes a very hot research subject in the current scientific community. However, the research and development of the nano robot is not independent of the research on the nano engine, and the nano engine and the driving method thereof are the most important part for developing the nano robot.

At present, the research and development of nano engines at home and abroad are in the beginning stage, people find out a plurality of methods for driving the nano engines, wherein the research is mostly carried out by a chemical driving technology, and the principle that substances such as hydrogen peroxide and the like are partially decomposed in the engines to release bubbles is mainly reflected to push the nano engines to advance. However, since it is difficult to find suitable reactants in nature (which are characterized by non-toxicity, harmlessness, no pollution, easy recovery and degradation), the development conditions of such nano-engines are harsh. And because the chemically driven nano engine mainly utilizes the release of bubbles to obtain power, and the reaction process of chemical substances in a nano-scale space is difficult to control, the chemical reaction instability has great influence.

Disclosure of Invention

In view of the above, the present invention provides a light pressure driven nano-engine and a driving method thereof, the nano-engine provided by the present invention can be driven by laser, the driving process is easy to control, and no toxic substance is generated, so that the nano-engine is safe, environment-friendly, high-efficiency, and good in stability.

The invention provides a light pressure driven nano engine which comprises a fuselage and a plurality of wings fixed on the fuselage;

the wing comprises a wing frame connected with the fuselage and an aluminizer covering the wing frame.

Preferably, the wing frame is in the shape of a sector; the radius of the fan shape is 100-1000 nm; the central angle of the fan shape is 80-120 degrees.

Preferably, the thickness of the aluminizer is 15-30 nm.

Preferably, the reflection coefficient of the aluminizer is 0.8-0.95.

Preferably, the wing frame is made of TiO₂Nanotube enclosure of said TiO₂The radius of the nanotube is 5-20 nm.

Preferably, the machine body is of a hollow structure, and the wall thickness of the machine body is 10-50 nm.

Preferably, the shape of the fuselage is a spheroid; the radius of the major axis of the ellipsoid of revolution is 100-140 nm, and the radius of the minor axis is 60-90 nm.

Preferably, the wing is perpendicular to the long axis of the fuselage.

Preferably, the number of the wings is multiple, and the wings are located on the same plane.

The invention provides a driving method for driving a nano engine by light pressure, which comprises the following steps:

and vertically irradiating the laser beam onto the wing of the nano engine in the technical scheme to form light pressure on the surface of the wing and push the nano engine to move.

Compared with the prior art, the invention provides the light pressure driven nano engine and the driving method thereof. The nano engine provided by the invention comprises a fuselage and a plurality of wings fixed on the fuselage; the wing comprises a wing frame connected with the fuselage and an aluminizer covering the wing frame. The nano engine provided by the invention is provided with the wing made of the aluminum-plated film material, and when the wing is irradiated by laser beams, a light pressure phenomenon can be formed on the surface of the wing, and the nano engine can efficiently and stably run along the track under the propelling action of the light pressure. The nano engine provided by the invention can be driven by light pressure, and pollutants are not generated in the driving process, so that the nano engine is safe and environment-friendly. And the power of the nano engine can be regulated and controlled by changing the intensity of the laser beam, and the control is simple and convenient and is easy to implement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a photo-pressure driven nanomotor provided in an embodiment of the present invention;

fig. 2 is a graph of the movement speed of the nano-engine under the irradiation of the laser beam and the time.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a light pressure driven nano engine which comprises a fuselage and a plurality of wings fixed on the fuselage;

the wing comprises a wing frame connected with the fuselage and an aluminizer covering the wing frame.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an optical pressure driven nano-engine according to an embodiment of the present invention. In fig. 1, 1 denotes a fuselage, 2 denotes a wing frame, and 3 denotes an aluminum-plated film.

The light pressure driven nanometer engine provided by the invention comprises an airframe 1 and a plurality of wings. The shape of the machine body 1 is preferably a rotational ellipsoid, so that the friction force applied to the nano engine in the motion process can be effectively reduced. In one embodiment of the present invention, the radius of the major axis of the ellipsoid of revolution is preferably 100 to 140nm, and specifically may be 100nm, 105nm, 110nm, 115nm, 120nm, 125nm, 130nm, 135nm or 140 nm; the minor axis radius of the ellipsoid of revolution is preferably 60-90 nm, and specifically can be 60nm, 65nm, 70nm, 75nm, 80nm, 85nm or 90 nm. In one embodiment provided by the invention, the machine body 1 is of a hollow structure, and the wall thickness of the machine body 1 is preferably 10-50 nmThe carrier may be 10nm, 15nm, 20nm, 25nm, 30nm, 35nm, 40nm, 45nm or 50 nm. In one embodiment of the present invention, the material of the body 1 is SiO₂The nanometer material has the characteristics of no toxicity, no smell, no pollution, good plasticity, high magnetic resistance, low heat conductivity and the like. In one embodiment provided by the present invention, the material is SiO₂The nano-material body 1 can be prepared by adopting a template method.

In the invention, a plurality of the wings are fixed on the fuselage 1, and the fixing mode is preferably laser local heating fixing. In an embodiment of the invention where the fuselage 1 is shaped as a spheroid, the wings are perpendicular to the long axis of the fuselage 1. In the embodiment of the present invention, in which the shape of the fuselage 1 is a spheroid, and the wings are perpendicular to the long axis of the fuselage 1, there are a plurality of wings, specifically 2, 3, or 4, and the plurality of wings are located on the same plane.

In the present invention, the wing comprises a wing frame 2 and an aluminized film 3. Wherein the wing frame 2 is connected to the fuselage 1. In one embodiment provided by the invention, the wing frame 2 is fan-shaped; the radius of the fan is preferably 100-1000 nm, and specifically can be 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, 400nm, 450nm, 500nm, 550nm, 600nm, 650nm, 700nm, 750nm, 800nm, 850nm, 900nm, 950nm or 1000 nm; the central angle of the fan is preferably 80-120 degrees, and specifically can be 80 degrees, 85 degrees, 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees or 120 degrees. In one embodiment provided by the invention, the wing frame 2 is made of TiO₂Nanotube enclosure of said TiO₂The radius of the nanotube is preferably 5-20 nm, and specifically may be 5nm, 6nm, 7nm, 8nm, 9nm, 10nm, 11nm, 12nm, 13nm, 14nm, 15nm, 16nm, 17nm, 18nm, 19nm or 20 nm. In one embodiment provided by the present invention, the TiO₂The nanotube is prepared by taking porous anodic alumina as a main template and adopting a sol-gel method.

In the present invention, an aluminized film 3 is overlaid on the wing frame 2. In one embodiment of the present invention, the thickness of the aluminum-plated film 3 is preferably 15 to 30nm, and specifically may be 15nm, 16nm, 17nm, 18nm, 19nm, 20nm, 21nm, 22nm, 23nm, 24nm, 25nm, 26nm, 27nm, 28nm, 29nm, or 30 nm. In one embodiment of the present invention, the reflection coefficient of the aluminum-plated film 3 is preferably 0.8 to 0.95, and specifically may be 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, or 0.95. In one embodiment provided by the present invention, the aluminized film 3 is specifically an aluminized PET film, which has high barrier properties and heat resistance. In one embodiment provided by the present invention, the aluminized PET film is prepared according to the following method: aluminum was deposited on the surface of a polyethylene terephthalate (PET) film by vapor deposition to obtain an aluminum-plated PET film.

The nano engine provided by the invention is provided with the wing made of the aluminum-plated film material, and when the wing is irradiated by laser beams, a light pressure phenomenon can be formed on the surface of the wing, and the nano engine can run along a track under the propelling action of the light pressure. The nano engine provided by the invention can be driven by light pressure, and has at least the following advantages:

1) under the laser irradiation state, the nano engine can continuously provide stable kinetic energy, and the nano engine can continuously work for a long time;

2) the power of the nano engine can be regulated and controlled by changing the intensity of the laser beam, and the control is simple and convenient;

3) compared with the traditional chemical energy driven nano engine, the working time of the nano engine provided by the invention is obviously prolonged, and the working efficiency of the nano engine is greatly improved;

4) under reasonable use conditions and a correct use method, the nano engine has longer service life and generally does not have faults; the nano engine is easy to recover after use, can be recycled, and reduces the manufacturing cost and the use cost.

5) The nano engine does not generate pollutants in the using process, and is safe and environment-friendly.

The invention also provides a driving method for driving the nano engine by light pressure, which comprises the following steps:

and vertically irradiating the laser beam onto the wing of the nano engine in the technical scheme to form light pressure on the surface of the wing and push the nano engine to move. The emission wavelength of the laser beam is preferably 488nm to 780nm, and specifically 488nm, 514nm, 543nm, 633nm, 650nm, 694nm, 714nm, 760nm, and 780 nm.

The working principle of the driving method provided by the invention is as follows:

the beam emitted by the laser consists of a large number of photons, which, according to einstein's photon theory, have no static mass but an energy (E ═ hv ═ mc)²Where h is the planck constant, v is the frequency of the light, m is the moving mass of the photon, and c is the velocity of the photon in vacuum). According to the quantum theory of light, photons have momentum (P ═ hv/c), when a laser emission beam irradiates the wing surface of the nano engine, the momentum of the photons is changed, namely the momentum is transferred to the wing, so that the photons are subjected to the acting force of the wing. According to the principle of Newton's force and reaction force, photons will also exert a force with the same magnitude and opposite direction on the wing.

The method is characterized in that monochromatic light waves with the external laser emission frequency v are adopted to vertically irradiate the wings of the nano engine, the energy of each photon is hv, the number of photons which are evenly emitted into a unit area in unit time of 1s is n, and when the photons are absorbed by the wings of the nano engine, the momentum transmitted to the wings by each photon is hv/c. When photons are reflected at the wing, the momentum imparted to the wing by each reflected photon is 2 hv/c. The wings of the nano engine adopt an aluminized PET (polyethylene terephthalate) film with the reflection coefficient R as a material, so that the surface of a unit wing is irradiated within 1s in unit time, and the magnitude of light pressure generated on the surface of the wing is as follows:

the incident direction of the light beam is vertical to the horizontal direction of the wing, so that the magnitude of the acting force generated by the laser beam acting on the wing with the area S is F ═ delta PS.

The driving method provided by the invention converts the light energy into the mechanical energy required by the motion of the nano engine by utilizing the advanced light pressure propulsion technology, and the method at least has the following advantages:

1) under the laser irradiation state, stable kinetic energy can be continuously provided for the nano engine, so that the nano engine can continuously work for a long time;

2) the power of the nano engine can be regulated and controlled by changing the intensity of the laser beam, and the control is simple and convenient;

3) compared with the traditional chemical energy driving method, the driving method provided by the invention can obviously prolong the working time of the nano engine and greatly improve the working efficiency of the nano engine;

4) in the process of driving the nano engine, no pollutant is generated, and the method is safe and environment-friendly.

For the sake of clarity, the following examples are given in detail.