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2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems最新文献

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EHD Micro Pump using Pyrolyzed Polymer 3-D Carbon Mesh Electrodes EHD微型泵采用热解聚合物三维碳网电极
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805428
D. Wakui, Naoki Imai, Y. Nagaura, Hironobu Sato, T. Sekiguchi, S. Konishi, S. Shoji, T. Homma
This paper presents the EHD (electro-hydrodynamic) micro pump using 3-D carbon mesh electrodes. The carbon electrodes were fabricated by pyrolysis of SU-8 micro mesh structures [1]. Low temperature SU-8 bonding method under 90°C was developed to realize wafer level carbon structure packaging. The pumping behaviors were evaluated using fluorinert as a sample solution. The maximum pressure and volume flow rate are about 23Pa and 400nL/min under applied voltage of 500V.
本文介绍了一种采用三维碳网电极的电液动力微泵。碳电极采用SU-8微孔结构热解制备[1]。提出了90℃低温SU-8键合方法,实现了晶圆级碳结构封装。使用氟惰性作为样品溶液评估泵送行为。在施加电压为500V时,最大压力约为23Pa,最大体积流量约为400nL/min。
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引用次数: 6
Selectivity and Long-Term Reliability of Resonant Explosive-Vapor-Trace Detection based on Antigen-Antibody Binding 基于抗原-抗体结合的共振爆炸-蒸汽-痕量检测的选择性和长期可靠性
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805382
A. Lin, E. S. Kim
This paper reports experimental results on the selectivity and long-term reliability of the explosive-vapor-trace detection based on antigen-antibody binding on a film bulk acoustic resonator (FBAR). An FBAR coated with specific antibody was shown to be able to detect vapor trace of TNT (Trinitrotoluene) or RDX (Cyclotrimethylenetrinitramine) without any pre-concentrator [1], but its false alarm rate and long-term reliability have never been experimentally investigated. This paper confirms that the anti-TNT coated FBAR sensor indeed responds to TNT vapor very selectively with permanent resonant frequency shift, as expected since an antigen binds only to its specific antibody. Also experimentally obtained is a surprisingly long lifetime (up to a month) of the anti-TNT at room temperature.
本文报道了基于抗原-抗体结合薄膜体声谐振器(FBAR)的爆炸物蒸汽痕量检测的选择性和长期可靠性的实验结果。在没有预浓缩剂[1]的情况下,经特异性抗体包被的FBAR能够检测出TNT(三硝基甲苯)或RDX(环三甲基三胺)的蒸气痕迹,但其误报率和长期可靠性尚未得到实验研究。本文证实,抗TNT涂层的FBAR传感器确实对TNT蒸汽有非常选择性的响应,具有永久谐振频移,因为抗原仅与其特异性抗体结合。实验还获得了一个惊人的长寿命(长达一个月)的抗tnt在室温下。
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引用次数: 9
A Self-Contained Miniaturized PCR System using Electromagnetic Actuators 一种使用电磁执行器的自包含微型PCR系统
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805376
B. T. Chia, Sheng-An Yang, Ming-Yuan Cheng, Chun-Liang Lin, Chii-wann Lin, Y. Yang
In this paper, the development of a portable polymerase chain reaction (PCR) device is presented. The fully integrated self-contained system consists of four major parts: a disposable chamber chip with micro-channels and pumping membranes, a heater chip with micro-heaters and temperature sensors, a linear array of electromagnetic actuators, and a control/sensing circuit. The system can be fully operated with a 5V DC voltage, and does not require any external air compressor or bulky power supply. The size of the whole system is 67 mm × 66 mm × 25 mm, and is smaller than a PDA cell-phone. The miniaturized PCR system not only has the advantage of smaller size, less consumption of DNA solution, but also can effectively reduce the PCR process time into one-third of the time required by typical commercial PCR system.
本文介绍了一种便携式聚合酶链反应(PCR)装置的研制。完全集成的独立系统由四个主要部分组成:带有微通道和泵膜的一次性腔室芯片,带有微加热器和温度传感器的加热芯片,线性阵列电磁执行器和控制/传感电路。该系统可以在5V直流电压下完全运行,不需要任何外部空气压缩机或笨重的电源。整个系统的尺寸为67毫米× 66毫米× 25毫米,比PDA手机还小。小型化PCR系统不仅具有体积更小,DNA溶液消耗更少的优点,而且可以有效地将PCR处理时间缩短到典型商用PCR系统所需时间的三分之一。
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引用次数: 1
An All Polymer Air-Flow Sensor Array using a Piezoresistive Composite Elastomer 采用压阻复合弹性体的全聚合物气流传感器阵列
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805415
A. Aiyar, C. Song, S. Kim, M. Allen
This paper presents an out-of-plane micromachined piezoresistive flow sensor array based on laser micromachining of polymer films, microstencil printing, and stress-engineered curvature. The developed process is suitable for low cost, large-area sensor array fabrication, and can leverage traditional flex-circuit fabrication. Each device is composed of an out-of-plane curved microtuft formed from laser-machined Kapton® polyimide and PECVD-deposited SiO2, and a conductive elastomer piezoresistor with a measured gage factor of 7.3 located at the base of the microtuft. The fabrication and performance of a prototype array and a fabrication sequence for large-area arrays on flexible substrates is demonstrated, for flow field mapping across an airfoil. The fabrication sequence also enables backside interconnects without adding further process complexity, which facilitates integration and enables the sensing of airflow with minimum interference due to the sensing circuitry. Individual microtufts as small as 1.5mm in length and 0.4mm in width, with 70 ¿m wide piezoresistor lines have been fabricated. Wind tunnel testing demonstrated sensitivities as high as 66 ¿/(m/s).
本文提出了一种基于激光微加工聚合物薄膜、微模板印刷和应力工程曲率的面外微加工压阻式流量传感器阵列。该工艺适用于低成本、大面积的传感器阵列制造,并且可以利用传统的柔性电路制造。每个器件由激光加工的Kapton®聚酰亚胺和pecvd沉积的SiO2形成的面外弯曲微簇和位于微簇底部的测量尺寸因子为7.3的导电弹性体压敏电阻组成。演示了一种原型阵列的制造和性能,以及在柔性基板上大面积阵列的制造顺序,用于在机翼上进行流场映射。制造顺序还可以在不增加进一步工艺复杂性的情况下实现背面互连,这有利于集成,并且可以在感应电路的干扰最小的情况下感应气流。单个微簇的长度小至1.5mm,宽度为0.4mm,具有70 μ m宽的压敏电阻线。风洞测试显示灵敏度高达66¿/(m/s)。
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引用次数: 11
Optically Programmable Self-Assembly of Heterogeneous Micro-Components on Unconventional Substrates 异质微元件在非常规基板上的光学可编程自组装
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805483
E. Saeedi, J. Etzkorn, L. Draghi, B. Parviz
Self-assembly is a promising technique for fast and cost-effective integration of microcomponents especially at smaller scales. Methods are needed to program the self-assembly process so that we can assemble heterogeneous components necessary to build a complex system. Here we present a new method of programming the self-assembly process which is based on optically removing blocking polymer from designated receptor sites. In order to perform the self-assembly process we need to fabricate free-standing microcomponents and templates. Templates were fabricated on both plastic and glass. We have shown successful assembly of four types of silicon microcomponents on plastic. The blocking AZ4620 resist was removed from the designated receptor sites immediately prior to the assembly of the desired microcomponents by using optical masks, UV exposure, and resist developer. 98% yield of proper positioning of microcomponents on a plastic template was achieved within ~10min of pipetting the components onto a template in a fluidic medium.
自组装技术是一种极具发展前景的技术,可以快速、经济地集成微型元件,特别是在较小的尺度上。需要对自组装过程进行编程的方法,以便我们可以组装构建复杂系统所需的异构组件。本文提出了一种新的编程自组装过程的方法,该方法基于光学去除指定受体位点上的阻断聚合物。为了进行自组装过程,我们需要制造独立的微组件和模板。模板是在塑料和玻璃上制作的。我们展示了四种硅微元件在塑料上的成功组装。在组装所需的微组分之前,通过光学掩膜、紫外线照射和抗蚀剂显影剂,将阻断AZ4620抗蚀剂从指定的受体位点移除。在流体介质中将微组件移液到模板上的~10min内,塑料模板上微组件的正确定位率达到98%。
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引用次数: 3
Formation and Integration of a Ball Lens Utilizing Two Phase Liquid Technology 利用两相液相技术的球透镜的形成与集成
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805346
Chih-Chun Lee, S. Hsiao, W. Fang
This study presents a novel microlens formation technology to implement a polymer ball lens in liquid medium. The highly symmetric ball lens is achieved due to the lower gravity influence in liquid. The microlens' diameter is controlled by the volume of the dispensed polymer. Moreover, it is easy to dispense, form, and align the liquid-phase polymer microlens with MEMS structures while processing in liquid. Thus, the microlens can either be a discrete optical component, or directly integrated with MEMS structures during the process to form a SiOB (silicon-optical-bench). To date, ball lenses with diameter ranging 200¿m~600¿m and surface roughness ≪10nm are fabricated. A typical sphericity is 8.6¿m for a 525¿m diameter ball lens. The integration of such polymer micro ball lens on SiOB is also demonstrated.
本研究提出了一种新型的微透镜形成技术,用于在液体介质中实现聚合物球透镜。高度对称的球透镜是由于液体中的重力影响较小而实现的。微透镜的直径由所分配聚合物的体积控制。此外,液相聚合物微透镜易于在液体中加工时与MEMS结构进行分配,形成和对准。因此,微透镜既可以是分立的光学元件,也可以在过程中直接与MEMS结构集成以形成SiOB(硅光学平台)。迄今为止,已生产了直径200米~600米,表面粗糙度≪10纳米的球形透镜。对于直径525米的球透镜,典型的球度为8.6米。并展示了这种聚合物微球透镜在SiOB上的集成。
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引用次数: 14
Integration of Bridging-Structural SWNTs on Flexible PDMS Sheet by Stamping Transfer 柔性PDMS板上桥接结构单壁碳管的冲压转移集成
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805441
Y. Takei, T. Kan, E. Iwase, Kiyoshi Matsumoto, I. Shimoyama
This paper describes an integration method of bridging-structural single-walled carbon nanotubes (SWNTs) onto the flexible PDMS sheet by stamping transfer. Silicon microstructures and the SWNTs which directly synthesized between the gaps of the microstructures were lifted off by PDMS stamp sheets with high yield (97.8%) and accuracy (position error ≪ 100 nm). From the SEM observation of our transferred structures, we confirmed that our method could transfer the bridging-structural SWNTs on to the flexible materials without any damage to the SWNTs' bridging.
本文介绍了一种通过冲压转移将单壁碳纳米管(SWNTs)结构桥接到柔性PDMS片上的集成方法。硅微结构和直接在微结构间隙之间合成的单壁碳纳米管由PDMS冲压片制成,成品率(97.8%)和精度高(位置误差≪100 nm)。通过对转移结构的SEM观察,我们证实了我们的方法可以将桥接结构的碳纳米管转移到柔性材料上,而不会破坏碳纳米管的桥接。
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引用次数: 0
Microfabricated Flipping Glass Disc for Stereo Imaging in Endoscopic Visual Inspection 用于内窥镜视觉检查立体成像的微加工翻转玻璃盘
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805343
W. Choi, Minoo Akbarian, V. Rubtsov, C. Kim
In many fields, including medical and manufacturing, endoscopy is a powerful tool for remote visual inspection. However, images obtained by an endoscope are mostly planar and provide no accurate size or distance information about the object of interest. Use of stereo images to solve these problems greatly increases the performance of such inspection tools due to its three dimensional measurability. In this study, a method to obtain stereo images using a single "flipping" glass disc device for endoscopic applications, and its realization into a miniaturized device are presented.
在许多领域,包括医疗和制造业,内窥镜是远程视觉检查的有力工具。然而,内窥镜获得的图像大多是平面的,不能提供有关感兴趣物体的准确尺寸或距离信息。使用立体图像来解决这些问题,由于其三维可测量性,大大提高了此类检测工具的性能。本研究提出一种利用单一“翻转”玻璃盘装置获得内窥镜应用立体图像的方法,并将其实现为小型化装置。
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引用次数: 2
A Batch-Patterned Self-Expanding Biliary Stent with Conformal Magnetic PDMS Layer and Topologically-Matched Wireless Magnetoelastic Sensor 带有共形磁性PDMS层和拓扑匹配无线磁弹性传感器的成批自膨胀胆道支架
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805356
S. R. Green, Y. Gianchandani
This paper presents a system for wirelessly monitoring the accumulation of sludge within biliary stents. The system comprises a sensor and biasing permanent magnet layer that conform to the meshed topology and tubular curvature of a biliary stent. The sensors have an active area of 7.5 mm × 29 mm and a mass of 9.1 mg. Annealing the sensor at 375°C results in reducing the required biasing magnetic field from 6 Oe to 2 Oe. The integrated system shows a 38% decrease in resonant frequency (from 61.6 kHz to 38.2 kHz) after an applied mass load of 20.9 mg, or 2.3× the mass of the sensor. The system architecture allows the mechanical properties of the stent to be maintained while adding important monitoring capabilities to the implanted device.
本文介绍了一种用于无线监测胆道支架内污泥积累的系统。该系统包括传感器和偏置永磁体层,其符合胆道支架的网状拓扑结构和管状曲率。传感器的有效面积为7.5 mm × 29 mm,质量为9.1 mg。在375°C下退火传感器可将所需的偏置磁场从6 Oe降低到2 Oe。在施加20.9 mg或2.3倍传感器质量的负载后,集成系统显示谐振频率降低38%(从61.6 kHz降至38.2 kHz)。该系统架构允许维持支架的机械性能,同时为植入设备增加重要的监测功能。
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引用次数: 0
Analytical Modeling and Numerical Simulation of Capacitive Silicon Bulk Acoustic Resonators 电容性硅体声谐振器的解析建模与数值模拟
Pub Date : 2009-03-27 DOI: 10.1109/MEMSYS.2009.4805538
G. Casinovi, X. Gao, F. Ayazi
This paper introduces two newly developed models of capacitive silicon bulk acoustic resonators (SiBARs). The first model is analytical and is obtained from an approximate solution of the linear elastodynamics equations for the SiBAR geometry. The second is numerical and is based on finite-element, multi-physics simulation of both acoustic wave propagation in the resonator and electromechanical transduction in the capacitive gaps of the device. This latter model makes it possible to compute SiBAR performance parameters that cannot be obtained from the analytical model, e.g. the relationship between transduction area and insertion loss. Comparisons with measurements taken on a set of silicon resonators fabricated using electron-beam lithography show that both models can predict the resonant frequencies of SiBARs with a relative error smaller than 1%.
本文介绍了两种新开发的电容性硅体声谐振器模型。第一个模型是解析的,由SiBAR几何的线性弹性动力学方程的近似解得到。第二种是数值模拟,基于有限元,多物理场模拟声波在谐振器中的传播和器件电容间隙中的机电转导。后一种模型可以计算解析模型无法获得的SiBAR性能参数,例如转导面积与插入损失之间的关系。与电子束光刻技术制备的硅谐振器的测量结果进行比较表明,两种模型都可以预测sibar的谐振频率,相对误差小于1%。
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引用次数: 8
期刊
2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems
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