人类文明的历史就是一部材料的发展史，经过了石器、青铜器和铁器时代，21世纪，可以说是新材料的世纪。现代科学技术的发展，新材料是基础。在众多的新材料中，有一部分是用量不大，但缺之不可的，我们称之为功能材料，它们在高新技术领域具有重要的地位。近年来，在信息技术 The history of human civilization is a history of the development of materials. After the era of stone tools, bronze tools and iron tools, the 21st century can be regarded as the century of new materials. The development of modern science and technology, new materials is the foundation. Among the many new materials, some are not used in large amounts, but are indispensable. We call them functional materials, and they play an important role in the field of high-tech. In recent years, in information technology