Company Filing History:
Years Active: 2000-2003
Title: The Innovative Contributions of Chaonan Xu
Introduction
Chaonan Xu is a notable inventor based in Tosu, Japan, recognized for his significant contributions to the field of electronic devices and materials. With a total of five patents to his name, Xu has made remarkable advancements that enhance the functionality and efficiency of various technologies.
Latest Patents
One of Xu's latest patents is a device featuring two perovskite crystalline layers that demonstrate hysteresis and piezoelectric behavior. This electronic device comprises a multilayered structure, including a substrate, an electroconductive layer of lanthanum nickel oxide (LaNiO) with a perovskite structure, and a dielectric layer of PZT with an oriented perovskite structure. The device exhibits an excellent piezoelectric effect under mechanical stress and a stable hysteresis phenomenon of electric polarization when subjected to electric fields. This innovation is particularly useful as a stress sensor and memory device.
Another significant patent is for a high-luminosity stress-luminescent material. This high-efficiency material emits luminescence when subjected to mechanical stress, such as compression, shearing, and rubbing. The material is an alkaline earth aluminate with a non-stoichiometric composition that is deficient in alkaline earth elements. The efficiency of luminescence emission can be enhanced by incorporating rare earth metal ions or transition metal ions. The preparation of this stress-luminescent material involves calcination treatment at temperatures ranging from 800 to 1700 degrees Celsius in a reducing atmosphere.
Career Highlights
Chaonan Xu has worked with the Agency of Industrial Science and Technology and Japan as represented by the Secretary of the Agency of Industrial Science and Technology. His work in these organizations has contributed to the advancement of industrial science and technology in Japan.
Collaborations
Xu has collaborated with notable individuals in his field, including Tadahiko Watanabe and Morito Akiyama, who have contributed to his research and development efforts.
Conclusion
Chaonan Xu's innovative patents and contributions to electronic devices and materials highlight his role as a leading inventor in his field. His work continues to influence advancements in technology and materials science.