Fabrication of ordered micro- and nano-scale patterns based on optical discs and nanoimprint

A simple method to fabricate one-dimensional(1-D) and two-dimensional(2-D) ordered micro- and nano-scale patterns is developed based on the original masters from optical discs, using nanoimprint technology and soft stamps. Polydimethylsiloxane(PDMS) was used to replicate the negative image of the 1-D grating pattern on the masters of CD-R, DVD-R and BD-R optical discs, respectively, and then the 1-D pattern on one of the PDMS stamps was transferred to a blank polycarbonate(PC) substrate by nanoimprint. The 2-D ordered patterns were fabricated by the second imprinting using another PDMS stamp. Different 2-D periodic patterns were obtained depending on the PDMS stamps and the angle between the two times of imprints. This method may provide a way for the fabrication of complex 2-D patterns using simple 1-D masters.     

基于ATPG的无线接入芯片的可测试性设计

可测试性设计是现代芯片设计中的关键环节,针对无线接入芯片的可测试性设计对测试技术有更高的要求。首先概述可测试性设计和测试向量自动生成理论,然后采用最新的测试向量自动生成技术,根据自行设计的无线接入芯片的内部结构及特点,建立一套无线接入芯片可测试性设计的方案。同时功能测试向量的配合使用,使得设计更为可靠。最终以最简单灵活的方法实现了该芯片的可测试性设计。     

无线传感器网络SOC芯片的低功耗设计

该文提出了一种无线传感器网络节点的SOC解决方案,介绍SOC设计的要点及VLSI低功耗设计的特点,在此基础上,着重分析了无线传感网络节点的体系结构,并从系统级,结构级,RTL级及物理设计几个方面阐述了无线传感网络节点芯片的低功耗设计。整个设计在FPGA上通过验证,并且完成了芯片的物理设计。