IMPRESSION IN THE AGE OF TWENTIES IS ENTIRE LIFE’S TREASURE IN THE FIELD OF SCIENCE.
The discovery of "Quasicrystal" gave a great impression to me, and I have continued to investigate it until now. It takes 27 years from the first discovery in 1984 to get Novel Prize in 2011 after establishment as a big concept of solid state structure, which takes a place beside "Crystal" and "Amorphous". In "Quasicrystal", "Semiconductor" and "Insulator" have not yet been discovered. It is remaining as a basic problem in the solid state physics, whether they exist or not. On the other hand, the development of high performance "thermoelectric material" has a potential to be a key technology, which can contribute to the energy problem and the environmental one. We are proposing that "Semiconducting Quasicrystal" should be a great candidate for thermoelectric material.