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2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)最新文献

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A MEMS slip sensor: Estimations of triaxial force and coefficient of static friction for prediction of a slip MEMS滑移传感器:用于滑移预测的三轴力和静摩擦系数的估计
Taiyu Okatani, A. Nakai, T. Takahata, I. Shimoyama
We report on a MEMS slip sensor that estimates triaxial force as well as coefficient of static friction for prediction of a slip. The sensor was composed of the outer and inner elastomers separated by a hard substrate, which enable to measure triaxial force independently of coefficient of static friction. We fabricated a prototype of the sensor and evaluated it by pressing and sliding it on various conditions of coefficient of static friction.
我们报告了一种MEMS滑移传感器,它可以估计三轴力和静摩擦系数来预测滑移。该传感器由坚硬衬底分隔的内外弹性体组成,能够独立于静摩擦系数测量三轴力。我们制作了传感器的原型,并在各种静摩擦系数条件下对其进行了按压和滑动评估。
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引用次数: 7
Mems force sensor array for evaluating the contractility of IPS cell-derived cardiomyocytes Mems力传感器阵列用于评估IPS细胞源性心肌细胞的收缩性
Kenei Matsudaira, Thanh-Vinh Nguyen, K. H. Shoji, T. Tsukagoshi, T. Takahata, I. Shimoyama
We report a force sensor array that can measure iPS cell-derived cardiomyocytes (iPS-CMs) contractility with high sensitivity and high temporal resolution. The fabricated device has six piezoresistive cantilevers whose sensitivities were higher than 9.1 × 10−5 nN−1. Using the device, we measured the contraction force of an iPS-CMs layer. As a result, contractile forces ranging from 1 to 12 nN were measured.
我们报道了一种力传感器阵列,可以测量iPS细胞来源的心肌细胞(iPS- cms)具有高灵敏度和高时间分辨率的收缩性。该器件具有6根压阻悬臂梁,灵敏度均高于9.1 × 10−5 nN−1。利用该装置,我们测量了iPS-CMs层的收缩力。结果,测量了1至12 nN的收缩力。
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引用次数: 1
A novel squeezed-film damping model for MEMS comb structures 一种新的MEMS梳状结构压缩膜阻尼模型
A. Sinding, A. Parent, I. Ocak, W. Syed, A. Chatterjee, C. Welham, Shuangqin Liu, Jun Yan, S. Breit, Hyun-Kee Chang, I. Elfadel, Z. Sbiaa
We present the implementation and validation of a novel model for simulating comb squeezed-film damping. The model is computationally efficient regardless of finger count and optionally includes top and bottom encapsulation surfaces surrounding the fingers. Comparison with standard numerical simulation shows a difference in damping coefficient of less than 1%. One application is to predict the Q factors of resonant MEMS such as gyroscopes for which a high Q-factor ensures stable oscillations and certain magnetometers for which it amplifies the sensitivity. The model is validated against experimental Q factors of a magnetometer, predicted values are within 10% of measurement from 0.01MPa to 100Pa.
我们提出了一个模拟梳状挤压膜阻尼的新模型的实现和验证。无论手指数量如何,该模型都具有计算效率,并且可选地包括围绕手指的顶部和底部封装面。与标准数值模拟相比,阻尼系数的差异小于1%。一个应用是预测谐振MEMS的Q因子,如陀螺仪,高Q因子可以确保稳定的振荡,某些磁力计可以放大灵敏度。用某磁力计的实验Q因子对模型进行了验证,在0.01MPa ~ 100Pa范围内,预测值与实测值相差在10%以内。
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引用次数: 3
From sensors to intelligence 从传感器到智能
B. J. Woo, George Liu, E. Cheng, Ivan Wu, Shih-Fen Huang, D. N. Yaung, A. Kalnitsky
"Smart" cars, houses, offices, cities, etc. require increasingly large variety of sensors and associated electronics. This paper describes T SMC's activities in motion, pressure, optical and bio sensors that we hope will help transform "smart everything" into an "intelligent world" we will live in.
“智能”汽车、住宅、办公室、城市等需要越来越多种类的传感器和相关电子设备。本文描述了台积电在运动、压力、光学和生物传感器方面的活动,我们希望这些活动将有助于将“智能一切”转变为我们将生活的“智能世界”。
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引用次数: 1
Polymer based thickness shear mode acoustic resonator for sensing of fluid complex shear modulus 基于聚合物的流体复合剪切模量传感的厚度剪切模声谐振器
S. Bhadra, K. Waluś
This paper describes a low-cost high-quality acoustic device for measuring complex shear modulus of contact fluid. The sensor is based on thickness shear mode (TSM) piezoelectric resonator. It consists of stretched and poled polyvinylidene fluoride (PVDF) films utilizing the shear piezoelectric properties of PVDF. The resonant frequency and quality factor of a 1 mm thick sensor in air is measured to be respectively, 590 kHz and 140. Experiments demonstrate that the sensor can effectively measure the change of complex shear modulus with a sensitivity of 0.035 kHz/Pa and detection limit of 108 Pa over 50–900 Pa range.
本文介绍了一种低成本、高质量的测量接触流体复杂剪切模量的声学装置。该传感器基于厚度剪切模式(TSM)压电谐振器。它由拉伸和极化聚偏氟乙烯(PVDF)薄膜组成,利用PVDF的剪切压电特性。测量了1mm厚传感器在空气中的谐振频率为590 kHz,质量因数为140 kHz。实验表明,该传感器能有效地测量复合剪切模量的变化,灵敏度为0.035 kHz/Pa,在50-900 Pa范围内检测限为108 Pa。
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引用次数: 3
A microfluidic device for electronic cell surface expression profiling using magnetophoresis 一种利用磁泳法进行电子细胞表面表达谱分析的微流控装置
Ozgun Civelekoglu, Ruxiu Liu, Mert Boya, Chia-Heng Chu, Ningquan Wang, A. F. Sarioglu
Membrane antigen expression analysis of a cell population is routinely needed in clinical applications and basic biology research. In this work, we introduce a microfluidic device that aims to electronically profile the surface antigen density in a given cell population as a low-cost alternative to fluorescent-activated cell sorter. By coupling magnetophoretic cell sorting with an array of code-multiplexed resistive pulse sensors, our device can electrically quantify magnetic deflection of cells in the sorting process. Experiments using human breast cancer cell line demonstrate the utility of this device in the analysis of heterogeneous cell populations.
细胞群膜抗原表达分析是临床应用和基础生物学研究的常规需要。在这项工作中,我们介绍了一种微流控装置,旨在以电子方式描述给定细胞群体中的表面抗原密度,作为荧光激活细胞分选器的低成本替代品。通过将磁电泳细胞分选与编码多路复用电阻脉冲传感器阵列耦合,我们的设备可以电量化分选过程中细胞的磁偏转。使用人类乳腺癌细胞系的实验证明了该装置在异质细胞群分析中的实用性。
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引用次数: 4
Fully disposable and optically transparent microfluidic viscometer based on electrofluidic pressure sensor 基于电流体压力传感器的全一次性光学透明微流体粘度计
Tse-Ang Lee, Wei-Hao Liao, Y. Tung
This paper reports a microfluidic viscometer with an embedded pressure sensor constructed using electrofluidic circuits, which are electrical circuits constructed by ionic liquid-filled microfluidic channels. The electrofluidic circuit provides a great pressure-sensing scheme with great long-term and thermal stability. The viscosity of the tested fluidic sample is estimated by its flow resistance, which is a function of pressure drop and flow rate, and the geometry of the microfluidic channel. The viscometer can be exploited to measure viscosity of either Newtonian or non-Newtonian power-law fluid under various temperatures. The developed sensor-integrated microfluidic viscometer is made of polydimethylsiloxane (PDMS) with transparent electrofluidic circuit makes it feasible to real-time monitor samples under tests. In addition, the entire device is fully disposable to prevent cross contamination between samples, which is desired for various chemical and biomedical applications.
本文报道了一种采用电流体电路构成的嵌入式压力传感器微流控粘度计,电流体电路是由充满离子液体的微流体通道构成的电路。电流体电路提供了一种具有长期和热稳定性的压力传感方案。被测流体样品的粘度由其流动阻力(压降和流速的函数)和微流体通道的几何形状来估计。粘度计可用于测量牛顿或非牛顿幂律流体在不同温度下的粘度。所研制的传感器集成微流控粘度计采用聚二甲基硅氧烷(PDMS)制成,具有透明的电流电路,可以实时监测被测样品。此外,整个装置是完全一次性的,以防止样品之间的交叉污染,这是各种化学和生物医学应用所需要的。
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引用次数: 1
Development of novel pH image sensor for in-vivo apprication 新型体内应用pH图像传感器的研制
Shin Nanasaki, Hiroshi Horiuchi, H. Inada, Y. Nakamura, F. Dasai, T. Iwata, K. Takahashi, J. Nabekura, K. Sawada
A needle type pH image sensor with 32×128 pixels for in-vivo application was developed. The pixel pitch of the sensor is 23 μm and the time resolution is about 20msec (50flame/sec). To insert in the brain of a mouse, the geometry was modified to needle structure with 1.76×11.46 mm and 100 μm thickness. The needle type pH image sensor was covered by parylene C with a thickness of 4 μm without pH sensing area for waterproofing. In this study, we observed dynamic change of pH immediately after insert the sensor into cortex. Interestingly, we found that cortical pH is depth-dependent. Furthermore, pH in superficial layer was decreased by pharmacological manipulation and sensory stimulation whereas pH in deep layer increased. Finally, we found that spike-like responses are caused by pharmacological and sensory stimulation.
研制了一种具有32×128像素的针型pH值图像传感器。传感器的像素间距为23 μm,时间分辨率约为20msec(50焰/秒)。为了插入小鼠大脑,将几何形状修改为1.76×11.46 mm和100 μm厚度的针状结构。针状pH图像传感器采用厚度为4 μm的聚对二甲苯C包覆,无pH感测区防水。在本研究中,我们观察了传感器插入皮层后pH值的动态变化。有趣的是,我们发现皮层pH值与深度有关。药理作用和感官刺激使浅层pH值降低,深层pH值升高。最后,我们发现峰状反应是由药物和感觉刺激引起的。
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引用次数: 3
CMOS-MEMS thermal-piezoresistive oscillators with high transduction efficiency for mass sensing applications 具有高转导效率的CMOS-MEMS热压阻振荡器,用于质量传感应用
Ting-Yuan Liu, Chia-Chun Chu, Ming-Huang Li, Chun-You Liu, C. Lo, Sheng-Shian Li
In this work, a high-performance mass sensor utilizing CMOS-MEMS thermal-piezoresistive resonator (TPR) sustained by an instrumental Lock-in and PLL circuit for oscillation is demonstrated. Under a low dc power consumption of the device with only 1.75 mW, the motional transconductance (gm) of the proposed TPR reaches record-high values both in vacuum (118.4 μA/V) and air (16.96 μA/V) among all reported CMOS-MEMS TPRs [1] and even on par with single crystal silicon (SCS) TPRs [2]. The unique design of a butterfly-shaped TPR with its low thermal capacitance (Cth) actuator beams is the key to improve the transduction efficiency and sensor sensitivity. The mass resolution of the proposed thermal-piezoresistive oscillator (TPO) attains 29.8 fg, which is extracted from the measured Allan deviation of 89 ppb. To verify the mass sensing capability, a pico-liter ink jet printing setup was used to demonstrate the real time response and frequency shifts corresponding to a number of droplets printed onto the proof-masses of the TPO with a high sensitivity of 1.946 Hz/pg, well suited for future aerosol detection.
在这项工作中,展示了一种高性能的质量传感器,该传感器利用CMOS-MEMS热压阻谐振器(TPR),由仪器锁相和锁相环电路维持振荡。在1.75 mW的低直流功耗下,所提出的TPR的运动跨导(gm)在真空(118.4 μA/V)和空气(16.96 μA/V)中都达到了所有报道的CMOS-MEMS TPR[1]中的最高值,甚至与单晶硅(SCS) TPR[2]相当。蝶形TPR的独特设计及其低热容(Cth)致动器梁是提高转导效率和传感器灵敏度的关键。所提出的热压阻振荡器(TPO)的质量分辨率达到29.8 fg,这是从测量的Allan偏差89 ppb中提取的。为了验证质量传感能力,使用了一个微升喷墨打印装置来演示打印到TPO验证质量上的液滴的实时响应和频移,其灵敏度高达1.946 Hz/pg,非常适合未来的气溶胶检测。
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引用次数: 12
A 1.17 GHz wideband MEMS filter using higher order SH0 lithium niobate resonators 采用高阶SH0铌酸锂谐振器的1.17 GHz宽带MEMS滤波器
Yong-Ha Song, S. Gong
This paper reports on the design, analysis, and demonstration of a lithium niobate (LiNbO3) wideband radio frequency (RF) microelectromechanical systems (MEMS) filter with a low insertion loss of 2.1 dB, a wide bandwidth of 4.9 %, and a spurious-free passband response at 1.17 GHz. Such high performance is achieved by arraying resonators designed with pronounced 3rd order shear horizontal (SH0) mode resonances. The 3rd order SH0 mode was selected to attain a 3× higher resonant frequency, and subsequently enable a filter center frequency beyond 1 GHz without resorting to costly fine-resolution lithography. To suppress the unwanted modes while maintaining a large electromechanical coupling (kt2), and a large fractional bandwidth, the ratio of the electrode pitch (Wp) to the total width of the resonator (W) has been optimized using finite element analyses.
本文报道了铌酸锂(LiNbO3)宽带射频(RF)微机电系统(MEMS)滤波器的设计、分析和演示,该滤波器的插入损耗低至2.1 dB,带宽为4.9%,通带响应为1.17 GHz,无杂散。这种高性能是通过设计具有明显的三阶剪切水平(SH0)模式共振的阵列谐振器实现的。选择三阶SH0模式可以获得3倍高的谐振频率,从而使滤波器中心频率超过1 GHz,而无需采用昂贵的精细分辨率光刻技术。为了抑制不需要的模式,同时保持大的机电耦合(kt2)和大的分数带宽,使用有限元分析优化了电极间距(Wp)与谐振器总宽度(W)的比率。
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引用次数: 0
期刊
2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)
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