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laser pointer projects and research


Laser pointer Laser cleaning is economical and reliable
Laser pointer:
Laser cleaning solutions combine state-of-the-art cleaning with process monitoring and online process control. Large-scale BiZirong cleaning began in Germany in the late 1990s and has been established since the technology industry was established. For example, in the United States, hundreds of devices in the automotive, aerospace, and general industries are demonstrating the potential of laser cleaning.
Green laser pointer:
Green Laser Pointers for Industrial Parts and Surfaces Laser-based surface pretreatment is often an economical alternative to traditional component cleaning. In addition to low energy consumption, the media-free process does not require chemicals or abrasives. Therefore, light cleaning is especially sustainable and environmentally friendly. A short pulse industrial cleaning laser is used to avoid damage to the surface of the component. Various effects and surface properties can be adjusted depending on the intensity, pulse width and wavelength. It ranges from gentle cleaning to selective surface structuring. The effect of laser radiation depends on the absorption of the processed material. Powerful high-power laser pointers have many uses, including the ability to use laser pointers to repel pests, birds, and other animals, especially to repel crows.
Crow repulsion:
Metals have high reflectance for typical solid wavelengths of 1064 nm, but surface impurities and oxides better absorb laser radiation. Therefore, moderate beam intensity can be used to remove contaminants from the surface without damaging the underlying metal. When washed with light, organic and acidic oxide contaminants are effectively blown off the surface of metal parts. By enhancing the laser parameters, the metal material of the top boundary layer (typically up to 5 µm) can be modified to produce structure or roughness. One example is to improve the corrosive performance of light metals and increase the surface area by roughening. Laser beam cleaning is highly accurate and reproducible, which can significantly save the cost of industrial mass production. Current investments in blue laser pointer laser technology are usually many times cheaper than investments in wet chemical alternatives.
Blue laser pointer:
In addition, the operating costs of high-efficiency laser machines are usually significantly reduced due to their low energy consumption (several kilowatt hours) and moderate maintenance requirements. Therefore, component costs can be significantly reduced, especially when using a large number of parts and a fully automated process. The flexibility provided by laser cleaning makes it suitable for a variety of industrial applications such as pretreatment of joints and welded joints, accurate removal of coating contours such as providing electrical contacts, and paint removers for adhesive pretreatment. I will. Post-treatment of welds and rust prevention of steel before varnish / cathode dip coating.
Rice University chemists use a red laser pointer laser to create graphene
Red laser pointer:
American chemist James Tour (James Tour) and his colleagues used carbon dioxide (CO 2) laser scribing to blacken the thin-film laser-induced graphene (LIG) pattern of pine trees. Laser-induced graphene was discovered in rice in 2014. A previous iteration of LIG was done by laser heating the surface of polyethylene (a cheap plastic). LIG is not a flat sheet of hexagonal carbon atoms, but a form of graphene sheet with one edge attached to the lower surface while the chemically active edges are exposed to air. According to the tour, not only does every polypropylene produce LIG, but some woods are more popular than others. A research purple laser pointer team led by Rice University graduate students Ruquan Ye and Yeeu Chyan tried to use birch and oak, but the cross-linked lignocellulose structure of the pine produces higher quality graphene than wood with low lignin content. I found that it can be generated.
Purple laser pointer:
LIG has a high conductivity of about 10Ω / square. Similar to polyimide, this process uses a standard industrial CO 2 laser and uses an inert argon or hydrogen atmosphere at room temperature and pressure. In the absence of oxygen, the heat from the laser does not burn the pine tree, but converts the surface into a graphene foam sheet bonded to the surface of the tree. Changing the laser power also changes the chemical composition and thermal stability of the resulting LIG. At 70% power, the laser produces the highest quality called P-LIG (P stands for pine). The lab takes P-LIG one step further by converting it into electrodes for breaking down water into hydrogen and oxygen and supercapacitors for energy storage. With a small laser engraving machine, you can DIY any kind of pattern you need at home.
Laser engraving machine:
In the former case, they deposited layers of cobalt, phosphorus, nickel, and iron on P-LIG to create a pair of high surface area electrocatalysts that proved durable and effective. According to the tour, depositing polyaniline on P-LIG could result in an energy storage supercapacitor with usable performance indicators. You said: "There are more applications to explore." "For example, P-LIG can be used for photosynthesis of solar energy. This discovery considers how scientists can make the surrounding natural resources more functional. The tour confirms the environmental benefits of biodegradable electronics, saying, "Because graphene is a sheet of natural mineral graphite, instead of burying everything, it's on the ground with a wooden platform. I plan to bring it back. Electronic parts. "

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