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    Home > Coatings News > Paints and Coatings Market > The particle structure of the leafhopper's body surface may become the new key to the development of invisible devices

    The particle structure of the leafhopper's body surface may become the new key to the development of invisible devices

    • Last Update: 2021-07-22
    • Source: Internet
    • Author: User
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    Scientists have discovered that the protein particles secreted by small flying insects classified as Leafhopper not only have ultra-high drainage, but also have high anti-reflective properties.
    Light can come in but can’t get out, making it scavenge.
    Eaters have escaped death like "invisibility" in the eyes.
    This method may be instructive for scientists who are dedicated to researching invisibility cloaks or equipment

    .
    The Penn State University research team in the United States said that this may be applied to anti-reflective coatings and sensor equipment technology

    .

    The furthest distance in the world is not life and death, but it is clearly squatting in front of you, but you cannot see it
    .
    Scientists have known in the past that the body surface of leafhoppers secrete a kind of nano-scale protein particles called "brochosomes".
    These particles look like very small footballs.
    They have ultra-high waterproof performance and can make the leaves.
    The wings of a cicada remain dry in a humid environment

    .

    Researchers from Pennsylvania State University in the United States have discovered that these particles are not only waterproof, but also have the function of absorbing and converting up to 99% of incident light.
    They do not let go from ultraviolet to near-infrared light.
    They can only see the natural enemies of specific wavelengths.
    In other words, the leafhopper seems to be "invisible", but in fact this is a perfect camouflage effect

    .
    The team said that the surface of the leafhopper's tiny body is actually very much like the metamaterial used in invisible devices

    .
    It
    will be very interesting to apply this natural structure to optically synthesized particles .

    The so-called metamaterials are a type of man-made materials that have special physical properties that are not found in natural materials in nature, such as allowing light and electromagnetic waves to change their original fluctuations.
    They have a lot of behaviors that violate the laws of physics and have attracted the attention of scientists

    .
    This unusual effect mainly depends on the precise geometric microstructure arrangement and scale of metamaterials.
    Wiki pointed out that the application fields of metamaterials include: terahertz field, optical quantum field, refractive index adjustment, antenna, nonlinear material, hyperlens , Seismic surveys, etc.
    Past studies have also shown that metamaterials are closely related to invisible technology

    .

    In addition, the surface of the leafhopper's tiny particles has similar anti-reflection properties to the moth's eye structure.
    The moth's eye is a grid compound eye structure composed of thousands of small eyes.
    When light enters, dispersion occurs, which means that the moth's eye The light reflectivity of the eye is extremely low, so as to prevent the moth that is active at night from being exposed to the light

    .

    In the experiment, the team used a complex five-step electrochemical process to produce similar particles, which are compatible with various materials such as metal oxides (such as manganese oxide) and conductive polymers.
    Mechanical Engineering of Penn State University Assistant Professor Tak-Sing Wong said that different materials can have different applications.
    For example, manganese oxide is a very popular material in supercapacitors and batteries.
    Synthetic particles can be used as good battery electrodes to increase the rate of chemical reactions

    .

    If used as an anti-reflective coating, synthetic particles can help sensors or cameras reduce the signal-to-noise ratio, improve the capabilities of space telescopes, prevent light reflections from interfering with the lens, make images clearer, and even help solar panels capture light more effectively
    .
    This research has been published in Nature Communications

    .
    Synthetic material acts like an insect cloaking deviceThe Laws of Physics Make a Human Invisibility Cloak Pretty Much Impossible

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