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Throughout the development of human society, the discovery and use of new materials play a critical and important role. Many stages in the human history are named after the popular materials used at the time. The first man-made stone tools began to appear in Africa about 2.5 million years ago, and metallurgical technology was not available until 4000–5000 years ago. Therefore, archeologists refer to the earliest prehistoric period that is longer than twomillion years as the Stone Age. That was the time period when early humans used stones as materials for making tools along with wood, bones, shells, antlers, and other natural materials. In the latter part of the so-called Stone Age, clay and other materials were sintered to make pottery, that short period is referred to as the pottery age. Later, with the advancement of time and with the development and innovation of a series of metallurgical technologies, mankind has experienced the Copper Age, Bronze Age, and Iron Age. Next, there was the Steam age, the Electrical age, the Atomic age which lead us to today, where we are advancing in the Information Age dominated by silicon materials.