Can block strong ultraviolet rays! My scholar finds the "magic function" of graphyne
New knowledge
Science and Technology Daily (Reporter Wang Yanbin) Recently, the Shandong University of Technology's low-dimensional optoelectronic materials and devices team made a breakthrough in the field of optical nonlinearity, and they found that graphyne has excellent ultraviolet nonlinear characteristics and can absorb ultraviolet light "just right". Related results have been published in the internationally renowned journal "Nanoscale".
Two-dimensional materials represented by graphene have ushered in an unprecedented research boom and widespread application due to their outstanding physical, chemical, and biological properties. As a sibling of graphene, graphyne may have ultra-fast photoelectric properties superior to graphene.
The reporter of Science and Technology Daily learned that the low-dimensional research group of Shandong University of Technology found that graphyne has excellent ultraviolet nonlinear characteristics. What is the significance of UV nonlinearity? Associate Professor Xing Fei, the team leader, told reporters that UV is a major killer of human cells. Ultraviolet non-linear materials can pass under the condition of relatively low ultraviolet intensity, but if the ultraviolet intensity is higher than a certain threshold value, the material will magically block the excess ultraviolet rays and form a protection for biological cells, so that It becomes an ideal UV protection material.
In addition, the research group also found that tellurene, as another new two-dimensional material, also has certain UV nonlinear characteristics. Dr. Fang Zhang of the research team told reporters that although tellurene's UV nonlinearity is not as strong as graphyne, tellurene can exhibit nonlinear protection characteristics in a wider spectral range.
"We can generally understand it as tellurene can protect UV, visible light, and infrared light to a certain extent, and has great practical value. I hope this series of research can play a role in attracting new ideas and promoting optics. The rapid development of the non-linear field has created more results and products with application value. "Zhang Fang said.