Challenges of 22 nm and beyond CMOS technology

It is predicted that CMOS technology will probably enter into 22 nm node around 2012. Scaling of CMOS logic technology from 32 to 22 nm node meets more critical issues and needs some significant changes of the technology, as well as integration of the advanced processes. This paper will review the key processing technologies which can be potentially integrated into 22 nm and beyond technology nodes, including double patterning technology with high NA water immersion lithography and EUV lithography, new devi...     

Rainbow guiding of the lowest-order antisymmetric Lamb mode in phononic crystal plate

The modern acoustic circuits have experienced significant progress with the development of artificial structures, including phononic crystals, metamaterials or metasurfaces. Among the most intensive topics, the reconfigurable acoustic guides are achieved through several mechanisms. In this work, we report on the rainbow guiding for the lowest-order antisymmetric Lamb(A_0) mode in a phononic crystal plate, where the linear waveguides are constituted by erecting aligned pillars either solid or hollow. We show both numerically and experimentally that the whispering gallery modes(WGMs) in the hollow pillars can be generated by the defect mode that propagates in the waveguide. Then, the reemission of A_0 mode by the WGMs to the outer lateral areas can lead to spatial control of frequency selective wave guidance called "rainbow guiding". Our approach allows for an accurate control of the wave guiding and facilitates the integration of waveguides within other devices in the acoustic circuits.     

Design and therapeutic application of sodium alginate-based hydrogel with biodegradability and catalytic activity

Science China Technological Sciences - How to efficiently treat cancer in a minimally invasive manner has become one of the major focuses of recent developments in biomedicine. In this research,...     

The mobility of two-dimensional electron gas in AlGaN/GaN heterostructures with varied Al content

The mobility of the two-dimensional electron gas （2DEG） in AIGaN/GaN hetero-structures changes significantly with AI content in the AIGaN barrier layer, while few mechanism analyses focus on it. Theoretical calculation and analysis of the 2DEG mobility in AIGaN/GaN heterostructures with varied AI content are carried out based on the recently reported experimental data. The 2DEG mobility is modeled analytically as the total effects of the scattering mechanisms including acoustic deformation-potential, piezoelectric, polar optic phonon, alloy disorder, interface roughness, dislocation and remote modulation doping scattering. We show that the increase of the 2DEG density, caused by the ascension of the AI content in the barrier layer, is a dominant factor that leads to the changes of the individual scat- tering processes. The change of the 2DEG mobility with AI content are mainly determined by the interface roughness scattering and the alloy disorder scattering at 77 K, and the polar optic phonon scattering and the interface roughness scattering at the room temperature. The calculated function of the interface roughness pa- rameters on the AI content shows that the stress caused AIGaN/GaN interface degradation at higher AI content is an important factor in the limitation of the in- terface roughness scattering on the 2DEG mobility in AIGaN/GaN heterostructures with high AI content.     

65Mn盘条拉拔过程中的断裂分析

对首钢65Mn弹簧盘条在拉拔过程中的断裂问题进行了探讨，通过观察分析不同形态的断口发现．杯锥状断裂、齐平状断裂和表面横裂是盘条在拉拔过程巾断裂的主要形式，盘条中的中心残余缩孔、大型夹杂及表面缺陷等是导致65Mn弹簧盘条断裂的主要因素。     

阿姆德尔数字浓度计应用简述

阿姆德尔数字浓度计，具有显示密度值和重量百分浓度值的功能，广泛用于冶金、选矿、煤炭、化工、建材、轻工等行业。在糖厂不仅起检测作用，而且参与废蜜和甘蔗入榨蔗汁等的计量。     

水力溢流分级在超细α-Al2O3粉体中的应用研究

水力溢流分级精度较高，足目前常用的超细颗粒分级方法，本文通过水力溢流分级，研究了超声波，分散剂等因素对超细α-Al2O3，水力分级的影响，结果表明，分散剂虽然可以消除分级过程中的小颗粒现象，但是也对分级结果产生负面影响，使得分级后的产品粒度分布变宽；加入分散剂，同时超声处理后样品可以得到较好的分级结果。     

加强产品开发与质量管理推动我院的产业化发展

简要论述了昆明冶金研究院产业化现状和加强产品开发、生产质量管理，推动产业化发展等方面的情况。     

Multiregression based on upper and lower nonlinear integrals

A new nonlinear multiregression model based on a pair of extreme nonlinear integrals, upper and lower nonlinear integrals with respect to signed fuzzy measure, is established in this paper. A data set with the predictive features and the relevant objective feature is required for estimating the regression coefficients. Owing to the nonadditivity of the model, a multiobjective optimization using genetic algorithm is adopted to search for the optimized solution in the regression problem. Applying such a nonlinear multiregression model, an interval prediction for the value of the objective feature can be made once a new observation of predictive features is available. We apply our model on synthetic data and weather problem. The results testify the performance of the multiregression based on upper and lower nonlinear integrals. © 2012 Wiley Periodicals, Inc.     

基于无线网卡的实时视频传输研究及实现

针对无线局域网实时视频传输中存在的画面模糊、马赛克等问题,分析了采用无线网卡进行实时视频传输的特点,在DIVX编解码的基础上提出了一种实时视频传输策略,并给出了从压缩、组包、存储、发送到接收解压等整个流程的思想、具体实现。实验结果表明,采用该方法在无线局域网中传输视频能够取得令人满意的效果。