Microparticle transfer onto pixel electrodes of 45 μm pitch on HV-CMOS chips—Simulation and experiment

Spatially selective deposition of electrically charged microparticles onto integrated circuits that generate electrical fields in programmable patterns using electrodes on their surface was previously limited to a pixel pitch of 100 μm. Now, we demonstrate spatially selective deposition onto pixels of 45 μm pitch in experiments on a test chip allowing arbitrary patterns, but being of limited size and of fixed characteristics, complemented by COMSOL simulations. Experiments on a prototype high voltage CMOS chip demonstrate the feasibility of miniaturisation in the first place, imply simulations of interest that cannot be tested experimentally and, conversely, complement the simplified simulation models by reality checks. Using COMSOL for the optimisation of the setup parameters, particles of decreasing average diameter in a number of aerosol and electrical field geometries are simulated with particular attention to minimising contamination (deposition of particles on undesirable locations). Combining these results, the average particle diameter is decreased from 10 μm to less than 3 μm and the deposition voltage is reduced from 100 V to 30 V, when using pixels with a pitch of 45 μm. Optimising these parameters allows for more than quadrupling the spot density compared to the previous chip, on which combinatorial particle deposition with minimal contamination is achieved. Peptide arrays, having been previously shown to be a major application for this method, benefit in particular, as the increase in density from 10,000 pixels/cm² to approximately 50,000 pixels/cm² promises a significant decrease in cost-per-peptide and amount of test specimens required.     

Identification of plant species by using high spatial and spectral resolution thermal infrared (8.0-13.5 μm) imagery

High spatial and spectral resolution thermal infrared imagery (8.0-13.5 μm) from the SEBASS airborne sensor was used to analyze and map tree canopy spectral features at the State Arboretum of Virginia, near Boyce, Virginia. Fifty tree species were analyzed and about half were directly identified with varying degrees of success on the basis of spectral matched filtering that utilized laboratory-measured leaf spectra as the target signatures. Spectral averages of pixels extracted from SEBASS emissivity data compared favorably with laboratory spectra of leaves collected from individual tree species. Best results were obtained from species having relatively strong spectral contrast, wide and flat leaves, closed planophile canopies, and/or large canopy areas. Tree species having small leaves or unfavorable leaf orientations showed spectral attenuation likely resulting from cavity blackbody effects. Increased spatial resolution and better image calibration and atmospheric correction might lead to further improvements in thermal infrared plant species identification.     

Cyclic codes over R = Fp + uFp +?+ uFp with length pn

In this paper, all cyclic codes with length p^sn, (n prime to p) over the ring R = F_p + uF_p +?+ u^k−1F_p are classified. It is first proved that Tor_j(C) is an ideal of , so that the structure of ideals over extension ring S_u^k(m,ω)=GR(u^k,m)[ω]/〈ω^ps-1〉 is determined. Then, an isomorphism between R[X]/〈X^N − 1〉 and a direct sum ⊕_h∈IS_u^k(m_h,ω) can be obtained using discrete Fourier transform. The generator polynomial representation of the corresponding ideals over F_p + uF_p +?+ u^k−1F_p is calculated via the inverse isomorphism. Moreover, torsion codes, MS polynomial and inversion formula are described.     

Identifying plant species using mid-wave infrared (2.5–6 μm) and thermal infrared (8–14 μm) emissivity spectra

Plant species discrimination using remote sensing is generally limited by the similarity of their reflectance spectra in the visible, NIR and SWIR domains. Laboratory measured emissivity spectra in the mid infrared (MIR; 2.5 μm–6 μm) and the thermal infrared (TIR; 8 μm–14 μm) domain of different plant species, however, reveal significant differences. It is anticipated that with the advances in airborne and space borne hyperspectral thermal sensors, differentiation between plant species may improve. The laboratory emissivity spectra of thirteen common broad leaved species, comprising 3024 spectral bands in the MIR and TIR, were analyzed. For each wavelength the differences between the species were tested for significance using the one way analysis of variance (ANOVA) with the post-hoc Tukey HSD test. The emissivity spectra of the analyzed species were found to be statistically different at various wavebands. Subsequently, six spectral bands were selected (based on the histogram of separable pairs of species for each waveband) to quantify the separability between each species pair based on the Jefferies Matusita (JM) distance. Out of 78 combinations, 76 pairs had a significantly different JM distance. This means that careful selection of hyperspectral bands in the MIR and TIR (2.5 μm–14 μm) results in reliable species discrimination.     

安捷伦EDA软件入选中芯国际0．18μm CMOS工艺

本刊讯：全球领先的跨国高科技公司安捷伦科技（NYSE：A）目前宣布：中芯国际针对于微波、射频、混合射频、模拟和数字IC设计的0．18μm CMOS工艺中增加ADS（Advanced Design System）软件设计套件（Design Kit）。这种设计套件包括全套无源和有源元件，将采用安捷伦最新版本的ADS仿真。中芯国际与安捷伦密切协作，以确保设计套件的精度和适用性，从而改进设计精度和效率，缩短产品总开发时间。     

A cognitive-behavioral model of problematic online gaming in adolescents aged 12–22 years

The aim of this study was to apply the cognitive behavioral model of problematic Internet use to the context of online game use to obtain a better understanding of problematic use of online games and its negative consequences. In total, 597 online game playing adolescents aged 12–22 years participated in this study. Results showed that the cognitive behavioral model of problematic Internet use can also be used in the context of online game use. More specifically, preference for online social interaction, mood regulation and deficient self-regulation appeared to play an important role in predicting negative outcomes from problematic online game use. Together, these cognitions and behaviors explained 79% of the variance of negative outcomes scores. These findings can be used to develop strategies that aim at reducing problematic online game behavior and its negative consequences.     

Sub-μm structured lotus surfaces manufacturing

Sub-μm structured surfaces allow modifying the behavior of polymer films or components. Especially in micro-fluidics a lotus-like characteristic is requested for many applications. Structure details with a high aspect ratio are necessary to decouple the bottom and the top of the functional layer. Unlike to stochastic methods, patterning with a LIGA-mold insert it is possible to structure surfaces very uniformly or even with controlled variations (e.g., with gradients). In this paper we present the process chain to realize polymer sub-μm structures with minimum lateral feature size of 400 nm and up to 4 μm high.     

2μm万门门阵列设计技术

论述了2μmCMOS门阵列技术，特别着重介绍了门阵库、库单元和母片的建立，同时对门阵列布局布线流程进行了探讨。     

新的PIN型0.95μm光探测器设计

提出并设计了一种新的PIN型0.95μm光探测器。它的I层是Ge_0.3Si_0.7(8nm)/Si(12 nm),共50个周期。上、下缓冲层厚各为0.1μm,n~+-Si(10~(20)Cm~(-3)厚约0.5μm,衬底为〈100〉P~+-Si,器件面积为4mm~2。这种探测器一旦实现,它对0.95μm光的灵敏度比硅PIN型探测器高得多,可用于火灾报警等场合。     

1．9μm超薄太阳能电池问世

据英国相关媒体报导,澳大利亚和日本科学家最新开发了一种比蜘蛛网更薄的太阳能电池,这种电池非常柔软,甚至可以缠绕在一根头发上。     

基于EWB 0.6μm CMOS运放设计

根据运放的结构原理及理论指标要求设计一个基于0.6μm CMOS运算放大器。并采用EWB仿真软件仿真运放的各主要指标。指标包括运放的静/动态仿真分析、共/差模抑制比仿真分析。最后参考设计指标要求将仿真结果与理论计算结果相比对,设计出稳定的运放电路。     

SiO_2介质薄膜电容μm位移传感器

<正> 一、简述 大规模和超大规模集成电路的飞速发展,对集成电路产品的包封技术提出了越来越严格的要求。为了保证大规模集成电路产品的质量和可靠性,相应的包封材料研究工作得以重视和发展,尤其是塑料包     

0.8μm CMOS/SOI模型参数提取

0.8μm CMOS/SOI的模型参数提取是基于0.8μm CMOS/SOI工艺,选用HSPICE中的level 57模型.介绍了测试图形的设计经验,分析了SOI器件与体硅器件之间模型的差异,最后给出测试数据及参数测试结果的拟合情况.     

Efficient spectral ultraspherical-dual-Petrov–Galerkin algorithms for the direct solution of (2n + 1)th-order linear differential equations

Some efficient and accurate algorithms based on ultraspherical-dual-Petrov–Galerkin method are developed and implemented for solving (2n + 1)th-order linear elliptic differential equations in one variable subject to homogeneous and nonhomogeneous boundary conditions using a spectral discretization. The key idea to the efficiency of our algorithms is to use trial functions satisfying the underlying boundary conditions of the differential equations and the test functions satisfying the dual boundary conditions. The method leads to linear systems with specially structured matrices that can be efficiently inverted. Numerical results are presented to demonstrate the efficiency of our proposed algorithms.     

自己动手打造宽带路由器防火墙m0n0wall篇

m0n0wall是基于FreeBSD内核开发的一款软件防火墙。m0n0wall提供基于浏览器的配置管理、提供VPN功能、支持DHCP Server、DNS转发、动态DNS、IPSec、流量控制、无线网络支持等功能……     

Synopsys的Design Ware USB2．0 nanoPHY和PCI Express PHY IP可用于中芯国际的0．13μm工艺

Synopsys公司宣布基于中芯国际130nm G工艺的DesignWare USB2．0nanoPHY IP已获USB标志认证，PCI Express（PCIe）PHY IP已通过一致性测试。作为用于PCI Express和USB2．0的完整IP解决方案的技术供应商，Synopsys一贯为设计者提供高质量IP，该IP不但集成风险低、上市时间短，而且具有很高的互操作能力和标准兼容性。[第一段]     

超小型0．38m卫视天线图释

目前卫星电视技术类报刊、杂志及网站中对超小型卫视天线接收情况常有报道。有的读者认为这些报道夸大其辞,但笔者认为这些报道大都是真实的。因为他们大都是烧友们记录自己寻星过程的真实情况。他们把不可能的事实写成事实的目的又何在呢?仅仅为了一点点稿费就让别人指责一辈子吗?     

Growth and characterization of 0.8-μm gate length AlGaN/GaN HEMTs on sapphire substrates

GaN-based high electron mobility transistors (HEMTs) are promising devices for high power and high temperature applications[1―4]. Improvements over the years in material growth and device design have produced state-of-the-art AlGaN/GaN HEMTs with con- tinuous output power densities greater than 30 W/mm[3]. However, despite the impres- sive achievements, there exist some problems in developing the devices for application purposes, such as the current leakage through the GaN buffer layer[…