Room-Temperature Multi-Peak NDR in nc-Si Quantum-Dot Stacking MOS Structures for Multiple Value Memory and Logic

Room-temperature negative differential resistance(NDR)characteristics are observed in a nanocrystalline Si quantum dot(nc-Si QD)floating-gate MOS structure,which is fabricated by plasma-enhanced chemical vapor deposition.Clear multi-NDR peaks for the electrons and holes,shown in the I–V curves,which are significant for the application of multiple value memory and logic,are proved to be induced by electron and hole resonant tunneling into the nc-Si QDs from the substrate.The calculation results indicate that these NDR characteristics should be associated with the Coulomb blockade effect and the quantum confinement effect of the nc-Si QDs.Furthermore,low-temperature I–V characteristics are also investigated to confirm the room-temperature results.

可视下结核病患者服药监管系统的设计与实现

目的:利用信息化手段,实现结核病患者服药情况及时可视监管。方法:运用JAVA语言和SQL Server数据库,采用移动终端和服务后台相结合,通过云服务器搭建,利用互联网技术进行服药监管系统的开发设计。结果:设计实现了一套VOT(可视下患者服药)管理软件,用于远程监督监管患者服药。结论:利用移动端应用程序,进行患者服药提醒,服药视频上传,实现数据双向传输。通过可视下患者服药监管信息系统,提高了患者服药依从性,减轻了督导人员工作量,提高了工作效率,节约了结核病防治督导成本。