At the 31st National Youth Science and Technology Innovation Competition that just ended, Zheng Shangqin, a third-year student of Yuyao City, invented the “Synthesis of Tricolor Phosphors†invented by three students from the Calligraphy Teaching Showcase and Zhenhai Middle School. Awards and third prizes.
At the scene of the competition, Zheng Shangqin demonstrated his innovative projects.
Gizmo is the best gift for mom
Zheng Shangqin is a third-year student of Dongfeng Primary School Education Group in Yuyao City. “I just want my mother to be more relaxed in calligraphy teaching.†Xiao Shangqin said his original intentions.
Zheng Shangqin's mother is a calligraphy teacher. Every time she goes to the calligraphy class, the students rush around to see the teaching demonstration. In order to ensure that all students master every detail of the pen, the teacher can only repeat the writing over and over again.
“Inefficiency, mother is tired.†Zheng Shangqin and his father Zheng Honghao discussed whether they can make a calligraphy teaching demonstration platform for their mother. After repeated research, such a platform has finally been completed.
At the scene of the competition, Xiao Shangqin sat on the calligraphy teaching demonstration platform for demonstration. The whole process of lifting, pressing, ringing, pen writing and writing was transmitted to the projection through the writing device on the stage and under the stage. On the screen, it is easy to see.
The feeling of feedback is as bright as the innovative thinking. After learning the award, Zheng Shangqin said with excitement: "This invention is a gift I gave to my mother."
Why is it easy to read eyes under the light?
"Synthesis and application of trichromatic phosphors" is the innovation of Zhang Kairun, Zhu Yifeng and Feng Wei of high school students in Zhenhai Middle School. They wrote in the innovation note: “We often read and brush under the light. For a long time, the eyes often feel uncomfortable and even dizzy. Is there a way to solve or improve?†They started the synthesis of three primary color phosphors. And explore.
It is understood that the current commercial white LED is mainly composed of yellow phosphor and blue LED chip with Ce3+ as the illuminating center. The scheme has the problems of low color rendering index, high white color temperature, and easy color shift. If the near-ultraviolet chip is used as the excitation source, and the phosphors emitting the three primary colors of red, green and blue are used as the light source to realize the synthesis of white light, the above problems will be effectively solved, and the ideal color temperature and high color rendering index can be obtained. White light.
Under the guidance of Jiang Yan, the Academic Affairs Office of Zhenhai Middle School and Jiang Jun, a researcher at the Ningbo Institute of Materials, the Chinese Academy of Sciences, they finally succeeded through more than a year of exploration and experimentation.
Nearly 500 young people from 34 teams from all over the country participated in the competition, as well as more than 70 international representatives from 15 countries including the United States, France and Russia. The Zhejiang team won 27 awards, including 12 youth science and technology innovation achievement awards, 4 special awards, 5 creative star awards, and 6 scientific and technological counselors' innovation achievement awards.
Jiangmen Lihua Import & Export Trading Co., Ltd. Jiangmen Lihua Furniture., Ltd. , https://www.jmlihua.com