Metal-to-metal antifuse with low programming voltage and low on-state resistance

This paper describes and analyses the impact of the Ti layer, which is embedded between the insulator and top electrode, on the programming characteristic of the Al-HfO₂-Al antifuse. The programming voltage of the antifuse with 120 Å HfO₂ is properly reduced from 5.5 to 4.6 V with an embedded Ti layer. Low on-state resistance (~19 Ω) and low programming voltage (4.6 V) is demonstrated in the embedded Ti antifuse with 120 Å HfO₂ while keeping sufficient off-state reliability. The antifuse embedded with a Ti layer between the insulator and top electrode has been developed and has potential in field programmable devices.     

基于光子晶体平板传导共振模的低功率光开关

利用严格耦合波算法计算了二维光子晶体平板结构随角度变化透过谱和波长变化透过谱,研究了透过谱上传导共振峰与二维光子晶体平板能带结构的关系。利用共振传导模的低透过和高Q值的特点,设计了基于磷化铟材料的工作在1550nm波长附近的角度分辨和波长分辨的光子晶体光开关。理论模拟结果表明,该结构透过谱上传导共振峰品质因子可达105,非线性折射率变化为10-4即可实现开关对比度接近100%。当信号光或泵浦光分别与光子晶体平板传导共振模耦合时,由于共振耦合使得泵浦光场增强,需要泵浦能量仅为184fJ,为目前所知能量最低的光开关。     

公路路基技术改良方案选择

路基施工对整个工程都有很大的影响,本文就公路施工技术的公路路基这一方面的技术改良作下论述。     

航空结构的连接件内力分析探讨

航空结构疲劳分析的难点在于计算细节疲劳额定强度(DFR)计算,而结构的细节疲劳额定强度关键在于准确地得到紧固件载荷分布,找到最危险铆钉位置及R/P值。使用解析法能得到较准确的结果,但只能对简单、规则连接件进行计算。采用有限元方法,则可以对绝大多数连接件进行模型简化,通过单元的准确模拟,精确地得到内力分布。