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2004 International Conference on MEMS, NANO and Smart Systems (ICMENS'04)最新文献

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Basic Aspects and Clinical Trials of Micelle Carrier System 胶束载体系统的基本原理及临床试验
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.38
Y. Matsumura
NK911 is the first successful polymeric micelle system directed to remarkable accumulation in solid tumor through 5PR affect. The micelle consists of block copolymer of polyethylene glycol (PEG) and poly (aspartic acid) partially conjugated doxorubicin. The main objectives of this phase I study were to determine the maximum tolerated dose (MTD), dose-limiting toxicities (DLTs), and the recommended dose (RD) for phase II given every 3 weeks as a 10 mg DXR equivalent/min iv infusion to patients with solid tumors. Dose escalation is based on the accelerated titration method followed by a modified Fibonacci method. The starting dose was 6.0 mg/m2 (1/10 of rat LD10). No intrapatient dose escalation was allowed.
NK911是第一个成功的聚合物胶束系统,通过5PR影响在实体肿瘤中显著积累。该胶束由聚乙二醇(PEG)和聚天冬氨酸部分偶联的阿霉素嵌段共聚物组成。这项I期研究的主要目的是确定最大耐受剂量(MTD)、剂量限制性毒性(dlt)和II期推荐剂量(RD),每3周给实体肿瘤患者静脉输注10mg DXR当量/分钟。剂量递增是基于加速滴定法,然后是改进的斐波那契方法。起始剂量为6.0 mg/m2(大鼠LD10的1/10)。不允许在病人体内增加剂量。
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引用次数: 2
Functionalization of Carbon Nanotubes with Antibodies for Breast Cancer Detection Applications 碳纳米管与抗体功能化在乳腺癌检测中的应用
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.74
R. Sirdeshmukh, K. Teker, B. Panchapakesan
We study the effect of functionalization of Carbon Nanotubes (CNTs) with a primary monoclonal mouse immunoglobin G (IgG) specific to the cell-surface receptors of breast cancer cells, and secondary polyclonal goat ant- mouse IgG. The CNTs, in solution with a surfactant (sodium dodecyl benzene sulfonate) were labeled with dihexyloxacarbocyanine iodide (DiOC6), a fluorescent dye, in order to view them with fluorescently labeled antibodies through confocal microscopy. Co-localization for CNTs in combination with the primary antibody conjugated to the secondary was determined to be 90%, whereas CNTs in combination with the secondary antibody and polyethylene glycol (PEG), a polymer used to block CNTs from proteins binding to their surface, was found to be very minimal (0.5%). Preliminary studies on the electrical measurements of the primary mouse IgG incubated with CNTs show a decrease in conductance compared to that of bare CNT field effect transistors (CNTFETs). This observed change in conductance, can eventually be amplified and utilized in applications leading to a full-fledged breast cancer detection system in the future.
我们研究了碳纳米管(CNTs)与乳腺癌细胞表面受体特异性单克隆小鼠免疫球蛋白G (IgG)和山羊-小鼠多克隆IgG的功能化作用。在表面活性剂(十二烷基苯磺酸钠)溶液中,用荧光染料碘化二己氧碳菁(DiOC6)标记CNTs,以便通过共聚焦显微镜用荧光标记的抗体观察它们。经测定,CNTs与一抗结合到二抗的共定位率为90%,而CNTs与二抗体和聚乙二醇(一种用于阻止CNTs与蛋白质结合到其表面的聚合物)结合的共定位率非常低(0.5%)。对用碳纳米管孵育的原代小鼠IgG的电学测量的初步研究表明,与裸碳纳米管场效应晶体管(cntfet)相比,其电导率降低。这种观察到的电导变化最终可以被放大并用于应用,从而在未来形成成熟的乳腺癌检测系统。
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引用次数: 14
Nanopillar Formation via Defect Activation and Coulomb Explosion Initiated by a 355 nm Nd:YAG Laser Beam 355nm Nd:YAG激光束缺陷激活和库仑爆炸形成纳米柱
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.110
Yujie Han, Y. Furukawa
The interaction of nanosecond laser pulses in the ultraviolet wavelength range with the semiconductor SiC was investigated. Under low energy fluence, an array of highly orientated nanoparticles on the surface of SiC was formed via defect activation and coulomb explosion using 355 nm UV laser irradiation. Under high energy fluence, surface modification and ablation could occur.
研究了紫外波长范围内纳秒级激光脉冲与半导体碳化硅的相互作用。在低能量影响下,利用355nm紫外激光辐照,通过缺陷活化和库仑爆炸在SiC表面形成了一排高度取向的纳米颗粒。在高能量影响下,会发生表面改性和烧蚀。
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引用次数: 0
The Role of Electronic Container Seal (E-Seal) with RFID Technology in the Container Security Initiatives 电子容器封条(E-Seal)与RFID技术在容器安全倡议中的作用
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.142
Le-Pong Chin, Chia-Lin Wu
After the September 11 events, both the governments and industries have illustrated the importance of transportation security as well as cargo security. The September 11 terrorists hijacked the commercial passenger aircrafts to attack to World Trade Center Towers in New York City and Pentagon Building near Washington D.C. These attacks remind the public of how transportation security establishments directly affect the national security. Today more than 85% of cargo entering the United States is coming in the standard ocean containers. It is now essential to ensure these containers are well monitored and inspected along the way as they arrive in the U.S. ports so no mass destruction materials are smuggling into this country. In the wake of the container security initiative (CSI), the Electronic Container Seal (E-Seal) and Radio Frequency Identification (RFID) technology are introduced. In this paper, the basic technical features of RFID systems are described and linked to the practical applications. This paper will also determine how the technologies perform in the real-world operational environments and evaluate the various trade-offs that exist with e-seal design and the potential impact of those trade-offs on functionality, reliability, utility, and cost.
“9·11”事件发生后,无论是政府还是业界都强调了运输安全以及货物安全的重要性。9·11恐怖分子劫持商用客机袭击纽约世贸中心大厦和华盛顿五角大楼。这些袭击事件提醒公众交通安全机构如何直接影响国家安全。今天,进入美国的货物中有85%以上是用标准海运集装箱运输的。现在至关重要的是,确保这些集装箱在抵达美国港口的途中受到良好的监控和检查,以防止大规模杀伤性材料走私到美国。在集装箱安全倡议(CSI)之后,引入了电子集装箱封条(E-Seal)和无线射频识别(RFID)技术。本文介绍了RFID系统的基本技术特点,并结合其实际应用。本文还将确定这些技术在实际操作环境中的表现,并评估电子密封设计中存在的各种权衡,以及这些权衡对功能、可靠性、实用性和成本的潜在影响。
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引用次数: 3
Finite Element Modeling of a Hydrogel Micro-Valve for Fluid Control inside Microfluidic Channels 微流体通道内流体控制用凝胶微阀的有限元建模
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.69
A. Ibrahim, W. Moussa
This paper defines a finite element modeling protocol developed on a reported fabricated hydrogel structures inside a microfluidic channel for the purpose of fluid control. The modeling was done using ANSYS 8.0 Multiphysics software. A reported convergence of polymerization time to Young’s modulus E was used. The modeling was done to verify the reported convergence.
本文定义了一种基于流体控制的微流控通道内预制水凝胶结构的有限元建模方法。采用ANSYS 8.0 Multiphysics软件进行建模。据报道聚合时间收敛到杨氏模量E。通过建模验证了报告的收敛性。
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引用次数: 0
Structure and Stability of Self-Assembled Monolayers for Octadecanethiol Adsorbed onto Flame-Annealed Gold Substrate and Its Potential Application to Microfluidics 火焰退火金基底上十八硫醇自组装单层膜的结构和稳定性及其在微流体中的潜在应用
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.1508906
Jingmin Han, Xiaodong Wang, D. Kwok
Self-Assembled Monolayers (SAMs) derived from the adsorption of organothiols onto gold have been extensively investigated for studying their potential applications to Micro- and Nanofluidics system. However, nearly all applications rely on SAMs' stability. Because high energy gold is easy to absorb organic contaminant from ambient, totally wetting gold surface can not be obtained in the laboratory environment. Flame annealing the gold surface before adsorption not only remove the organic contaminant, it also shaves the "rolling hills" on the evaporated gold surface. SAMs formed on annealed gold surface have better structure and stability than those formed on evaporated gold. These properties will be helpful for potential application on microfluidics system as a surface modification. Ex situ spectroscopic ellipsometry, and Fourier Transform Infrared (FTIR) were used to characterize the structure of SAMs.
自组装单层膜(SAMs)是由有机硫醇在金表面吸附而成的,其在微纳米流体系统中的潜在应用得到了广泛的研究。然而,几乎所有的应用程序都依赖于sam的稳定性。由于高能金易吸附环境中的有机污染物,在实验室环境中无法获得完全湿润的金表面。在吸附前对金表面进行火焰退火处理,不仅可以去除有机污染物,还可以剃掉蒸发金表面的“起伏的山丘”。在退火金表面形成的地膜比在蒸发金表面形成的地膜具有更好的结构和稳定性。这些特性将有助于微流体系统作为表面改性的潜在应用。利用非原位椭偏光谱和傅里叶变换红外光谱(FTIR)对其结构进行了表征。
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引用次数: 0
Modeling and Experiments of Input-Output Displacement Relations for a Piezoelectric Nanopositioner 压电纳米逆变器输入-输出位移关系的建模与实验
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.96
Lin Wu, Qiao Sun
Existing commercially available long range piezoelectric actuators have limited load carrying capacity due to the fact that frictions are used as the load bearing mechanism. In order to improve the load carry capacity for long range piezoelectric actuators with nanometer resolutions, a novel design that employs the self-lock concept has been reported. In this paper, we study the input-output displacement relations for this new design. In particular, we investigate the losses of the actuator displacement due to elastic deformations when a large force is applied. For a given load, a minimum value exists for the stroke command to ensure a non-zero output displacement. A positioning strategy was proposed to achieve a nanometer scale positioning process in a long distance. Experimental results were also given to support the analysis.
由于使用摩擦作为承载机制,现有的商用远程压电致动器承载能力有限。为了提高纳米分辨率的远程压电致动器的承载能力,提出了一种采用自锁概念的新型设计。在本文中,我们研究了这种新设计的输入-输出位移关系。特别地,我们研究了当施加较大的力时,由于弹性变形而造成的致动器位移损失。对于给定负载,冲程命令存在一个最小值,以确保输出位移不为零。为实现纳米尺度的远距离定位,提出了一种定位策略。实验结果也支持了分析。
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引用次数: 0
Development of ‘Green and Clean’ Reaction Media for Inorganic and Organic Nanomaterials 绿色与清洁的发展‘无机和有机纳米材料的反应介质
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.1509013
Z. Shervani, Y. Ikushima, Juncheng Liu
We have developed new water-in-CO₂ microemulsions under supercritical conditions of CO₂ bulk phase. Using fluorinated AOT surfactants and hydrogenated n-butanol as a cosurfactant, microemulsion solutions were obtained which could dissolve large amount of water as large as W₀=49 at 35°C. Where W₀ is the molar ratio of water-to-surfactant. Using varieties of surfactants and amount of cosurfactant, the composition of microemulsion has been established which gives capabilities to prepare different size nanomaterials in the range of 3 to 10 nm depending on the size of the core of microemulsion droplets. Size of the nanomaterials can be controlled with narrow size distribution by adjusting the W₀ values of microemulsion solution. In this presentation, I shall describe the preparation of water-in-CO₂ microemulsions as a function of water content, pressure of CO₂, surfactant concentration, and amount of cosurfactant added. The new CO₂ microemulsions will replace the existing conventional media used for preparation of nanomaterials until now because of non-toxic, cheap, easily recyclable bulk phase CO₂ used in these solutions at moderately low temperature of 35°C.
在CO₂体相的超临界条件下,研制了新型CO₂水包微乳。以氟化AOT表面活性剂和氢化正丁醇为助表面活性剂,得到了在35℃下可溶解W 0 =49的大量水的微乳液溶液。式中W 0为水与表面活性剂的摩尔比。利用不同的表面活性剂和助表面活性剂的数量,建立了微乳液的组成,根据微乳液滴芯的大小,可以制备3至10纳米范围内不同尺寸的纳米材料。通过调节微乳液溶液的W 0值,可以控制纳米材料的尺寸,使其尺寸分布更窄。在这篇演讲中,我将描述水-CO₂微乳液的制备过程,它是水含量、CO₂压力、表面活性剂浓度和助表面活性剂添加量的函数。新型CO₂微乳剂在35℃的中低温下使用的CO₂是无毒的、廉价的、容易回收的,因此将取代目前用于制备纳米材料的传统介质。
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引用次数: 0
A Comparison between RF MEMS Switches and Semiconductor Switches 射频MEMS开关与半导体开关的比较
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.10
P. Grant, M. Denhoff, R. Mansour
This paper addresses the fundamentals of RF switches providing a comparison between semiconductor and RF MEMS switches. The basis of comparison is introduced by defining a figure of merit that is a function of the off-state capacitance and the on-state resistance. A simple transmission line model is presented to illustrate the impact of the switch off-state capacitance on the switch isolation and frequency range of operation. The figure of merit analysis given in this paper demonstrates that RF MEMS switches have superior insertion loss and isolation performance in comparison to MESFET and p-i-n diode switches. The paper also addresses several other design considerations beside insertion loss and isolation for selecting the right RF switch. A discussion is given on the potential use of RF MEMS switches in satellite and wireless applications.
本文介绍了射频开关的基本原理,并对半导体开关和射频MEMS开关进行了比较。通过定义一个与关断状态电容和导通状态电阻有关的功值,介绍了比较的基础。提出了一个简单的传输线模型来说明开关断态电容对开关隔离和工作频率范围的影响。本文给出的优点分析图表明,与MESFET和p-i-n二极管开关相比,RF MEMS开关具有优越的插入损耗和隔离性能。本文还讨论了在选择合适的射频开关时,除了插入损耗和隔离之外的其他几个设计考虑因素。讨论了射频MEMS开关在卫星和无线应用中的潜在用途。
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引用次数: 115
Novel Tactile Sensors Manufactured by Carbon Microcoils 碳微线圈制造的新型触觉传感器
Pub Date : 2004-08-25 DOI: 10.1109/ICMENS.2004.117
Xiuqin Chen, Shaoming Yang, M. Hasegawa, K. Takeuchi, K. Kawabe, S. Motojima
The carbon microcoils (CMC) with a high elasticity and coiling-chirality was prepared by the Ni catalyzed pyrolysis of acetylene containing a small amount of H2S. The morphology and their mechanical and electrical properties, especially tactile sensing properties, were examined. It was found that superelastic CMC, which could be extended and contracted to more than 15 times of the original coil length, could be obtained by controlling the reaction conditions. The extension of CMC was very high sensitive for applied load, and could be detected very low applied load of milligram orders. The electrical resistivity (R) of the CMC increased with the extension and decreased with the contraction. Inductance (L) and capacitance (C) of CMC/polysilicone composites extensively changed with the extension and contraction of the composite under various touching modes, such as pressing, picking, stretching, etc. It was supposed that these tactile sensing properties were affected by novel LCR composite hybrid resonance.
以含少量硫化氢的乙炔为原料,采用Ni催化热解制备了具有高弹性和卷动性的碳微线圈(CMC)。研究了材料的形态、力学性能和电学性能,特别是触觉性能。研究发现,通过控制反应条件,可以得到超弹性CMC,其拉伸和收缩可达到原线圈长度的15倍以上。CMC的延伸对外加负荷有很高的敏感性,可以检测到非常低的毫克级外加负荷。CMC的电阻率R随拉伸而增大,随收缩而减小。CMC/聚硅复合材料的电感(L)和电容(C)在挤压、拾取、拉伸等多种接触方式下,随着复合材料的拉伸和收缩而发生广泛的变化。推测这些触觉传感性能受到新型LCR复合混合共振的影响。
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引用次数: 9
期刊
2004 International Conference on MEMS, NANO and Smart Systems (ICMENS'04)
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