Category: Knowledge

In the experiment, the device used by the researchers was composed of two mirrors, which constituted a laser pointer optical microcavity. When the mirrors are spaced differently, the light will be confined to different spectra. Subsequently, the researchers in the microcavity An atom-thick molybdenum diselenide semiconductor is embedded in it. Here, the interaction between the semiconductor in…

The research team used “two mirrors” to create negative mass particles. Can be used to build low-power lasers. The concept of negative mass (the mass of an object is negative), which mainly exists in condensed matter physics, is common in the field of astronomy, and is used to understand the creation and evolution of the…

The principle of excimer laser pointer for treating myopia is that the excimer laser light is irradiated on the cornea of ​​the eyeball, photochemical action occurs, the cornea is cut a little, and the refractive power of the cornea is changed to achieve the purpose of treating myopia. Excimer laser myopia surgery is currently the safest, reliable…

In January 2017, the U.S. military launched the world’s first electronic warfare strategy, officially listing the electromagnetic spectrum as the sixth combat domain alongside the land, sea, air, and sky networks. It proposed the development direction and capability generation model of electronic warfare equipment, injecting strong power into the development and construction of electronic warfare…

Ghosting. DBF is sensitive to high-correlation signals, that is, DBF will enhance the noise generated by signals from multiple paths and generate ghosting. What innovations do green laser pointer radars have, especially in the automotive sector? First of all, this is a usual progressive project: Tier 1 and Tier 2 vendors focus on digging the limits of…

From the perspective of metal corrosion cleaning, the modification layer and the substrate belong to a homogeneous layer, and the film material contains a base layer element or a derivative of the base layer, that is, various corrosion products or decay products. The green laser pointer method is used for removal. The main cleaning mechanism is the…

With the increasingly strict requirements of environmental protection regulations in our country, and the increasing awareness of environmental protection and safety, many shortcomings of the traditional cleaning industry are becoming more and more obvious. green laser pointer cleaning has the characteristics of cleaner, non-contact, efficient and flexible, and suitable for various materials, and is considered to be…

Talking about how to publish a high-level paper, Qu Songnan humbly stated that there are not too many skills in this regard. The first is that the research direction must be valuable and promising, and the second is that the research content must be the core problem in the field and the current The main…

It is reported that the study of carbon nanoparticle’s luminescence mechanism and spectrum regulation are the difficult points in this field. Before 2013, the emission of carbon nanoparticles in the green light band was thought to originate from the surface defects of carbon nanoparticles, and this green laser pointer light source was considered to be difficult to…

In 2006, scientists at the University of Clermontson in the United States produced a type of carbon nanoparticle that emits bright light when illuminated. Scientists also found that green carbon pointers with luminescent carbon nanoparticles have unique advantages, such as chemical stability, no light flicker, light drift resistance, non-toxicity, cheaper manufacturing cost, and excellent biocompatibility….