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

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Polymeric strain gauges as pressure sensors for microfabricated organ-on-chips 聚合物应变片作为微加工芯片上器官的压力传感器
W. F. Quirós-Solano, N. Gaio, C. Silvestri, G. Pandraud, P. Sarro
Polymeric (PEDOT:PSS) strain gauges embedded in PDMS membranes fabricated using a full wafer-scale fabrication process capable of realizing reproducible small features, are reported. The devices are characterized using a customized setup, which provides mechanical stretch while dynamically reading the electrical resistance. Measurements show relative resistance changes of approximately 11% for applied pressure up to 4 kPa. The process described is tailored to fabricate pressure sensors and microelectrodes for a flexible substrate-based Organ-on-Chip platform.
聚合物(PEDOT:PSS)应变片嵌入PDMS膜上,采用完整的晶圆级制造工艺,能够实现可重复的小特征。该设备的特点是使用定制的设置,在动态读取电阻的同时提供机械拉伸。测量表明,当施加压力达到4kpa时,相对电阻变化约为11%。所描述的工艺是专门为基于柔性基板的器官芯片平台制造压力传感器和微电极的。
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引用次数: 1
4-Terminal MEMS relay with an extremely low contact resistance employing a novel one-contact design 采用新颖的单触点设计,具有极低接触电阻的4端MEMS继电器
Yong-Hoon Yoon, Yunsu Jin, Chang-Keun Kim, Songcheol Hong, Jun‐Bo Yoon
This paper reports a unique 4-terminal MEMS relay (actuation is electrically isolated with signal passage) employing a novel one-contact design to overcome high contact resistance problem of the conventional 4-terminal MEMS relay which utilizes a typical two-contact design. The fabricated 4-terminal MEMS relay with the one-contact design demonstrated a contact resistance of 18 mΩ, which is two order-of-magnitude lower value than that of the conventional two-contact design. To the best of our knowledge, this result is the lowest value in the 4-terminal MEMS relay and comparable value with the state-of-the-art in 3-terminal MEMS relay [14]. In addition, the relay was operated up to 1.1 × 106 cycles at 1 V / 50 mA in an air and hot switching condition with negligible contact resistance variation. The lifetime is 10 times longer than that of the conventional 4-terminal MEMS relay.
本文报道了一种独特的4端MEMS继电器(驱动与信号通道电隔离),采用新颖的单触点设计,克服了传统4端MEMS继电器采用典型的双触点设计的高接触电阻问题。采用单触点设计的4端MEMS继电器的触点电阻为18 mΩ,比传统的双触点设计低两个数量级。据我们所知,该结果是4端MEMS继电器中的最低值,与最先进的3端MEMS继电器相当[14]。此外,该继电器在1 V / 50 mA的空气和热开关条件下可运行1.1 × 106个周期,接触电阻变化可忽略不计。寿命是传统4端MEMS继电器的10倍。
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引用次数: 6
Epidermal wireless sensors on releasable films for biophysical signal measurement on facial areas 用于面部生物物理信号测量的可释放薄膜表皮无线传感器
Wenting Dai, Avinash Kankipati, Xiaowei Yu, B. Mahajan, H. Pan, Xian Huang
This paper presents an ultrathin stretchable device capable of soft lamination onto the skin with a releasable film for wireless measurement of biophysiological signal on skin. The device contains metallic electrodes and graphite strips, and can be attached to multiple skin locations in a conformal manner. Experimental results demonstrate that the device offers ease of skin releasing with reliable biopotential and strain measurement capability. This device when combined with other sensing mechanisms can yield a comprehensive sleep evaluation system capable of revealing influencing factors that are specific to a person, allowing highly individualized treatment plans for patients with sleep disorders.
本文提出了一种超薄可拉伸装置,该装置能够将柔软的薄膜贴合在皮肤上,用于无线测量皮肤上的生物生理信号。该装置包含金属电极和石墨条,并且可以以保形方式附着在多个皮肤位置。实验结果表明,该装置易于皮肤释放,具有可靠的生物电位和应变测量能力。该设备与其他传感机制相结合,可以产生一个全面的睡眠评估系统,能够揭示个人特有的影响因素,为睡眠障碍患者提供高度个性化的治疗方案。
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引用次数: 0
A flexible pH sensing smart bandage with wireless CMOS readout for chronic wound monitoring 一种灵活的pH感应智能绷带,带有无线CMOS读数,用于慢性伤口监测
M. Punjiya, Hojat Rezaei, Muhammed Arif Zeeshan, S. Sonkusale
In this paper, we present a pH sensing bandage constructed with pH sensing smart threads for chronic wound monitoring. The bandage is integrated with custom CMOS readout electronics for wireless monitoring and data transmission and is capable of continuously monitoring wound pH. Threads exhibit pH sensitivity of 54mV/pH and reach their steady state value within 2 minutes.
本文介绍了一种用于慢性伤口监测的pH传感绷带。该绷带集成了定制的CMOS读出电子器件,用于无线监测和数据传输,能够连续监测缠绕的pH值。螺纹的pH值灵敏度为54mV/pH,并在2分钟内达到稳态值。
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引用次数: 14
Cell analysis system using a filter-free fluorescence sensor 细胞分析系统采用无过滤器荧光传感器
Y. Choi, Youichi Shinozaki, Kazuhiro Takahashi, T. Iwata, S. Koizumi, K. Sawada
We proposed a cell analysis system without optical filters using a filter-free fluorescence sensor which used wavelength dependent absorption depth in a silicon substrate. Excitation light and fluorescence from fluorescently labeled cells were separated and their light intensities were measured at the same time by applying the proposed parameter. This result shows the filter-free fluorescence sensor can be used to detect cell labeled with various fluorescence reagents. The measured fluorescence of cells was good agreement with fluorescence intensity observed by conventional fluorescence microscopy.
我们提出了一种无滤光片的细胞分析系统,该系统使用无滤光片的荧光传感器,该传感器在硅衬底中使用波长依赖的吸收深度。将荧光标记细胞的激发光和荧光分离,并应用所提出的参数同时测量其光强度。结果表明,该无滤光片荧光传感器可用于检测各种荧光试剂标记的细胞。测定的细胞荧光与常规荧光显微镜观察到的荧光强度吻合较好。
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引用次数: 1
Monolithic tri-axis cantilever high-shock accelerometers fabricated with a single-sided process in (111) wafers 采用(111)晶圆单面工艺制备的单片三轴悬臂式高冲击加速度计
H. Zou, Jiachou Wang, Fang Chen, Haifei Bao, Xinxin Li
Single-sided fabricated monolithic tri-axis piezoresistive high-shock accelerometers are reported in this paper. A single-cantilever structure and two dual-cantilever structures are designed and employed to detect the Z-axis and X-/Y-axis high-shock accelerations, respectively. Different longitudinal dimensions of the cantilevers can be achieved and well controlled with a (111) wafer single-sided process. The remained smooth backside facilitates simple post-packaging without chip bonding. The results of the high shock test show the sensitivity of X-/Y-axis and Z-axis is 0.80–0.85 μV/g and 1.36 μV/g, respectively. The proposed single-sided process is also promising to fabricate other complex structures with different longitudinal sizes.
报道了单面制备的单片三轴压阻式高冲击加速度计。设计了一个单悬臂结构和两个双悬臂结构,分别用于检测z轴和X / y轴的高冲击加速度。悬臂的不同纵向尺寸可以通过(111)晶圆单面工艺实现并得到很好的控制。保持光滑的背面便于简单的后包装,无需芯片粘接。高冲击试验结果表明,X / y轴和z轴灵敏度分别为0.80 ~ 0.85 μV/g和1.36 μV/g。提出的单面工艺也有望制造其他具有不同纵向尺寸的复杂结构。
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引用次数: 0
Microorganisms driven micro actuation mechanisms for the kinetic energy harvesting 微生物驱动的动能收集微驱动机构
T. Hatsuzawa, Y. Yanagida, T. Nisisako
Three types of micro actuation mechanisms for the kinetic energy harvesting by microorganisms were fabricated by optical lithography and 3D printing. A phytoplankton and a zooplankton have been selected for the driving source because of its nature of phototaxis, which unites the swimming direction to a specific orientation of the mechanism. First, a reciprocating micro-float was driven by Artemia, which is a salt water zooplankotn, with a driving speed of 0.3mm/s. Next, a rotary micro-ratchet was also driven by Artemia larva, with a rotation speed of 0.35 rpm. Lastly, a micro-ratchet is driven by Volvox — a phytoplankton, and achieved a rotation speed of 3.5rpm. Those may provide a new micro-actuators driven by microorganisms, which may develop an alternative kinetic energy harvesting and environment monitoring technology.
利用光学光刻和3D打印技术制备了三种微生物动能收集微驱动机构。一种浮游植物和一种浮游动物被选为驱动源,因为它具有趋光性,将游动方向统一到机制的特定方向。首先,采用海水浮游动物Artemia驱动往复微型浮子,驱动速度为0.3mm/s。然后,用Artemia幼虫驱动旋转微型棘轮,转速为0.35 rpm。最后,微型棘轮由浮游植物Volvox驱动,转速达到3.5rpm。这可能提供一种新的微生物驱动微致动器,从而开发出一种可替代的动能收集和环境监测技术。
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引用次数: 2
Ultrasonic tactile sensor integrated with TFT array for contact force measurements 超声波触觉传感器集成与TFT阵列接触力测量
C. Chuang, H. Weng, J. Cheng, M. Shaikh
In this study, we propose an ultrasonic tactile sensor for real time contact force measurements and high-resolution shape recognition to enable safe and reliable robotic grasping of objects that may vary in compliance or texture. The sensing mechanism utilizes piezoelectric transduction where an AC signal is applied to a polyvinylidene fluoride (PVDF) thin film to generate pulses of ultrasound waves that travel upwards through the sensor components to the contact interface while a receiver PVDF thin film detects the reflected waves and produces a localized voltage output that is detected by the TFT (Thin-Film Transistor) array layer. The ability of the tactile sensor to detect contact forces can be attributed to the sensor surface having a thin compliant PDMS layer with a microstructure array. When the sensor contacts objects, the microstructures act as force concentrators, resulting in the localized deformation of the PDMS layer and an observed linear response to normal static forces in the range of 1 to 6 N. The TFT array output after signal processing produces a two-dimensional grayscale image that enables not only high-resolution imaging but also contact force information for improved robotic grasping performance.
在这项研究中,我们提出了一种用于实时接触力测量和高分辨率形状识别的超声波触觉传感器,以使机器人能够安全可靠地抓取可能在顺应性或纹理上变化的物体。传感机制利用压电转导,其中将交流信号施加到聚偏氟乙烯(PVDF)薄膜上,产生向上通过传感器组件传播到接触界面的超声波脉冲,而接收器PVDF薄膜检测反射波并产生局部电压输出,该输出由TFT(薄膜晶体管)阵列层检测。触觉传感器检测接触力的能力可归因于传感器表面具有具有微结构阵列的薄柔性PDMS层。当传感器接触物体时,微结构充当力集中器,导致PDMS层局部变形,并观察到1至6 n范围内的法向静力的线性响应。信号处理后的TFT阵列输出产生二维灰度图像,不仅可以实现高分辨率成像,还可以获得接触力信息,以提高机器人的抓取性能。
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引用次数: 3
High throughput lithography using thermal scanning probes 采用热扫描探头的高通量光刻技术
C. Rawlings, M. Spieser, C. Schwemmer, T. Kulmala, Y. Cho, S. Bonanni, U. Duerig, P. Paul, A. Knoll
Thermal scanning probe lithography (t-SPL) has demonstrated unique capabilities for maskless lithography. A heated atomic force microscope tip is used to locally remove a thermally sensitive resist. This process is able to fabricate precise 3D patterns and high resolution structures without the use of charged particles, such as electrons, which have been implicated in substrate damage. Here we outline our work to improve the throughput of t-SPL via integration with a laser writer for the patterning of large features and the development of independently addressable cantilever arrays.
热扫描探针光刻(t-SPL)已经证明了无掩模光刻的独特能力。加热的原子力显微镜尖端用于局部去除热敏电阻。该工艺能够制造精确的3D图案和高分辨率结构,而不使用带电粒子,如电子,这涉及到衬底损坏。在这里,我们概述了我们的工作,以提高t-SPL的吞吐量,通过集成激光书写器,用于大特征的图案和独立可寻址的悬臂阵列的发展。
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引用次数: 6
High fill factor piezoelectric micromachined ultrasonic transducers on transparent substrates 透明基板上的高填充系数压电微机械超声换能器
G. Luo, S. Fung, Qi Wang, Y. Kusano, Jon Lasiter, D. Kidwell, D. Horsley
This study presents a high fill-factor array of aluminum nitride (AlN) piezoelectric micromachined ultrasonic transducers (PMUTs) fabricated on a transparent substrate. PMUTs with diameters ranging from 40 microns to 100 microns were fabricated, resulting in resonant frequencies from 3 MHz to 18 MHz in air. A high fill factor of 62% was achieved. Immersed pulse-echo experiments were conducted at 2.5 MHz.
本研究提出了一种高填充因子氮化铝(AlN)压电微机械超声换能器(PMUTs)阵列。制备了直径在40微米到100微米之间的pmut,在空气中产生3 MHz到18 MHz的谐振频率。充填系数高达62%。在2.5 MHz频率下进行浸没式脉冲回波实验。
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引用次数: 17
期刊
2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)
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