In the last decade alone , ibm scientists have announced one semiconductor breakthrough after another : copper technology , silicon - on - insulator , silicon germanium , strained silicon , and low - k dielectrics 在最近10年中, ibm在半导体领域实现了一个又一个的突破:铜技术,绝缘硅,硅锗合金,应变硅和low - k绝缘体。