首页 > 最新文献

2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)最新文献

英文 中文
Biaxial vector-graphic scanning micromirror using radial magnetic field 利用径向磁场的双轴矢量图扫描微镜
A. Han, A. R. Cho, S. Ju, B. Yoon, S. Lee, T. Kim, J. Bu, C. Ji
This paper presents the design, fabrication, and measurement results of an electromagnetic biaxial vector-graphic scanning micromirror. Instead of utilizing locally distributed magnetic fields from multiple magnets, radial magnetic field from concentric magnet assembly and unique coil geometry have been used to realize independent scan along two perpendicular axes irrespective of operation frequency. Proposed actuation mechanism also enables the use of a compact non-hermetic polymer-based package due to large driving torque and simple structure without any gap-closing microstructures. The magnet assembly is placed under the micromirror die with passive alignment and gap control during assembly process. Mechanical half scan angle of 11.6° and 3.8° have been achieved at DC current of 250mA and 400mA for horizontal and vertical scans, respectively.
本文介绍了一种电磁双轴矢量图扫描微镜的设计、制作和测量结果。利用同心圆磁体组件的径向磁场和独特的线圈几何形状来实现沿两个垂直轴的独立扫描,而不受工作频率的影响。由于驱动扭矩大,结构简单,没有任何间隙闭合微结构,因此所提出的驱动机构也可以使用紧凑的非密封聚合物封装。磁体组件放置在微镜模具下,在装配过程中进行被动对准和间隙控制。在直流电流为250mA和400mA时,水平和垂直扫描的机械半扫描角分别为11.6°和3.8°。
{"title":"Biaxial vector-graphic scanning micromirror using radial magnetic field","authors":"A. Han, A. R. Cho, S. Ju, B. Yoon, S. Lee, T. Kim, J. Bu, C. Ji","doi":"10.1109/TRANSDUCERS.2015.7181055","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181055","url":null,"abstract":"This paper presents the design, fabrication, and measurement results of an electromagnetic biaxial vector-graphic scanning micromirror. Instead of utilizing locally distributed magnetic fields from multiple magnets, radial magnetic field from concentric magnet assembly and unique coil geometry have been used to realize independent scan along two perpendicular axes irrespective of operation frequency. Proposed actuation mechanism also enables the use of a compact non-hermetic polymer-based package due to large driving torque and simple structure without any gap-closing microstructures. The magnet assembly is placed under the micromirror die with passive alignment and gap control during assembly process. Mechanical half scan angle of 11.6° and 3.8° have been achieved at DC current of 250mA and 400mA for horizontal and vertical scans, respectively.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89420498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
GaN freestanding waveguides on Si substrate for Si/GaN hybrid photonic integration 硅衬底上的GaN独立波导用于Si/GaN混合光子集成
T. Sekiya, T. Sasaki, K. Hane
Combination of GaN devices with Si devices is promising for the future hybrid integration in optical MEMS such as embedded light sources with electronic circuits. However, GaN optical waveguides are not directly formed on Si substrate because the refractive index of GaN is lower than that of Si. In this research, a GaN layer is grown epitaxially on a Si substrate and GaN freestanding waveguides are fabricated on the Si substrate by etching the Si substrate with XeF2. The waveguides are supported by bridge structures. Light wave propagation is simulated using finite-difference time-domain (FDTD) method. The GaN waveguides are patterned by electron beam lithography using a Cl2 plasma and the etching properties are examined. The waveguide properties such as loss are measured at blue and infrared wavelengths.
GaN器件与Si器件的结合有望在光学MEMS中实现未来的混合集成,例如嵌入式光源与电子电路。然而,由于氮化镓的折射率比硅低,所以不能直接在硅衬底上形成氮化镓光波导。在本研究中,在Si衬底上外延生长GaN层,并通过XeF2蚀刻Si衬底在Si衬底上制备GaN独立式波导。波导由桥结构支撑。利用时域有限差分(FDTD)方法对光波的传播进行了模拟。采用电子束刻蚀技术对氮化镓波导进行了刻蚀,并对其刻蚀性能进行了研究。波导的特性,如损耗,在蓝色和红外波长测量。
{"title":"GaN freestanding waveguides on Si substrate for Si/GaN hybrid photonic integration","authors":"T. Sekiya, T. Sasaki, K. Hane","doi":"10.1109/TRANSDUCERS.2015.7181361","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181361","url":null,"abstract":"Combination of GaN devices with Si devices is promising for the future hybrid integration in optical MEMS such as embedded light sources with electronic circuits. However, GaN optical waveguides are not directly formed on Si substrate because the refractive index of GaN is lower than that of Si. In this research, a GaN layer is grown epitaxially on a Si substrate and GaN freestanding waveguides are fabricated on the Si substrate by etching the Si substrate with XeF2. The waveguides are supported by bridge structures. Light wave propagation is simulated using finite-difference time-domain (FDTD) method. The GaN waveguides are patterned by electron beam lithography using a Cl2 plasma and the etching properties are examined. The waveguide properties such as loss are measured at blue and infrared wavelengths.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83295803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A novel MOS radiation dosimeter based on the MEMS-made oxide layer 一种基于mems氧化层的MOS辐射剂量计
H. Liu, Y. Yang, J. Zhang
This paper reports a novel MOS dosimeter with a very thick and defect-rich oxide layer fabricated by MEMS technology. We combined deep-reactive-ion etching (DRIE), thermal oxidation and LPCVD to prepare an oxide layer of 5μm containing multiple and large interfaces. Our devices were irradiated by γ-rays of 60Co at 2Gy per minute for 2hrs and thermally stimulated current (TSC) method was used to determine the readout of dosimeters. Results show that there is a peak current about 450nA, indicating a total TSC charge of 158μC and sensitivity of 5.5nC/mm2·Gy, which is 40 times the sensitivity of previous MOS dosimeters.
本文报道了一种利用MEMS技术制作的具有极厚且富含缺陷的氧化层的MOS剂量计。我们将深度反应离子刻蚀(DRIE)、热氧化和LPCVD相结合,制备了一个含有多个大界面的5μm氧化层。用60Co γ射线以2Gy / min的速度照射2小时,用热刺激电流(TSC)法测定剂量计读数。结果表明,在450nA附近存在峰值电流,TSC总电荷量为158μC,灵敏度为5.5nC/mm2·Gy,是以往MOS剂量计灵敏度的40倍。
{"title":"A novel MOS radiation dosimeter based on the MEMS-made oxide layer","authors":"H. Liu, Y. Yang, J. Zhang","doi":"10.1109/TRANSDUCERS.2015.7181133","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181133","url":null,"abstract":"This paper reports a novel MOS dosimeter with a very thick and defect-rich oxide layer fabricated by MEMS technology. We combined deep-reactive-ion etching (DRIE), thermal oxidation and LPCVD to prepare an oxide layer of 5μm containing multiple and large interfaces. Our devices were irradiated by γ-rays of 60Co at 2Gy per minute for 2hrs and thermally stimulated current (TSC) method was used to determine the readout of dosimeters. Results show that there is a peak current about 450nA, indicating a total TSC charge of 158μC and sensitivity of 5.5nC/mm2·Gy, which is 40 times the sensitivity of previous MOS dosimeters.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83058277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An alternative technique to Perfectly Matched Layers to model anchor losses in MEMS resonators with undercut suspensions 一种完全匹配层的替代技术,用于模拟具有下凹悬架的MEMS谐振器中的锚损失
J. Segovia-Fernandez, C. Xu, C. Cassella, G. Piazza
This paper presents and experimentally validates a new numerical approach to accurately model anchor losses in MEMS resonators with undercut suspensions. This method is an alternative to the use of Perfectly Matched Layers (PMLs) and excels at predicting Q for those cases in which highly reflective boundaries are present. The proposed finite element method (FEM) imposes fixed-constraints (FC) at the edges of the released regions and the Q is calculated as the ratio of strain energy in both resonator and anchors and the total acoustic energy transferred to the substrate. This new approach is compared to the results obtained by using PML conditions and validated experimentally through measurement of 216 AlN resonators with resonance frequencies (fr) around 60 MHz. The comparison shows that the proposed numerical technique has a similar accuracy to PML in predicting Q, but it is superior to it when reflections from the boundaries become relevant.
本文提出了一种新的数值方法,并通过实验验证了该方法可以准确地模拟具有下切悬架的MEMS谐振器中的锚损。这种方法是使用完全匹配层(pml)的替代方法,并且擅长于预测存在高反射边界的情况下的Q。所提出的有限元法(FEM)在释放区的边缘施加固定约束(FC),并将Q计算为谐振器和锚中的应变能与传递到衬底的总声能之比。将该方法与PML条件下得到的结果进行了比较,并通过测量216个谐振频率(fr)在60 MHz左右的AlN谐振器进行了实验验证。结果表明,本文提出的数值方法在预测Q值时具有与PML相似的精度,但在边界反射相关时优于PML。
{"title":"An alternative technique to Perfectly Matched Layers to model anchor losses in MEMS resonators with undercut suspensions","authors":"J. Segovia-Fernandez, C. Xu, C. Cassella, G. Piazza","doi":"10.1109/TRANSDUCERS.2015.7181090","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181090","url":null,"abstract":"This paper presents and experimentally validates a new numerical approach to accurately model anchor losses in MEMS resonators with undercut suspensions. This method is an alternative to the use of Perfectly Matched Layers (PMLs) and excels at predicting Q for those cases in which highly reflective boundaries are present. The proposed finite element method (FEM) imposes fixed-constraints (FC) at the edges of the released regions and the Q is calculated as the ratio of strain energy in both resonator and anchors and the total acoustic energy transferred to the substrate. This new approach is compared to the results obtained by using PML conditions and validated experimentally through measurement of 216 AlN resonators with resonance frequencies (fr) around 60 MHz. The comparison shows that the proposed numerical technique has a similar accuracy to PML in predicting Q, but it is superior to it when reflections from the boundaries become relevant.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77271190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Rapid 3D-print-and-shrink fabrication of biodegradable microneedles with complex geometries 具有复杂几何形状的可生物降解微针的快速3d打印和收缩制造
M. Ochoa, J. Zhou, R. Rahimi, V. Badwaik, D. Thompson, B. Ziaie
We have developed a simple technique for fabricating polymeric microneedles of complex geometries. We achieve this by coupling 3D printing technology with an isotropic shrinkage technique, which effectively enhances the current resolution limits of 3D printing by at least five fold. The technique consists of transferring 3D printed patterns to a hydrogel which is subsequently shrunk by up to 40% within 12 hours. The process can be repeated for further shrinkage/refinement. Needle patterns are then transferred to a biodegradable polymer (PVP), resulting in microneedles which are sufficiently sharp (tips down to 9.6 μm radius of curvature) to penetrate porcine skin and deliver loaded/embedded chemicals.
我们已经开发了一种简单的技术来制造复杂几何形状的聚合物微针。我们通过将3D打印技术与各向同性收缩技术相结合来实现这一目标,该技术有效地将当前3D打印的分辨率限制提高了至少五倍。该技术包括将3D打印的图案转移到水凝胶上,随后在12小时内收缩高达40%。该过程可重复以进一步收缩/细化。然后将针头图案转移到可生物降解的聚合物(PVP)上,从而产生足够锋利的微针头(尖端曲率半径可达9.6 μm),可以穿透猪皮并输送装载/嵌入的化学物质。
{"title":"Rapid 3D-print-and-shrink fabrication of biodegradable microneedles with complex geometries","authors":"M. Ochoa, J. Zhou, R. Rahimi, V. Badwaik, D. Thompson, B. Ziaie","doi":"10.1109/TRANSDUCERS.2015.7181157","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181157","url":null,"abstract":"We have developed a simple technique for fabricating polymeric microneedles of complex geometries. We achieve this by coupling 3D printing technology with an isotropic shrinkage technique, which effectively enhances the current resolution limits of 3D printing by at least five fold. The technique consists of transferring 3D printed patterns to a hydrogel which is subsequently shrunk by up to 40% within 12 hours. The process can be repeated for further shrinkage/refinement. Needle patterns are then transferred to a biodegradable polymer (PVP), resulting in microneedles which are sufficiently sharp (tips down to 9.6 μm radius of curvature) to penetrate porcine skin and deliver loaded/embedded chemicals.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80151429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
A highly performed enzymatic biosensor using distributed electrodes decorated with hydrothermally treated reduced graphene oxide and platinum nanoparticles 一种高性能的酶生物传感器,采用水热处理的还原氧化石墨烯和铂纳米颗粒装饰的分布式电极
M. F. Hossain, H. Yoon, J. Y. Park
In this work, hydrothermally reduced graphene oxide (TRGO) was developed with environment friendly reducing agent by optimum time due to exfoliate easily in solution. Two distributed sensing electrodes connected in series are decorated with TRGO added platinum nanoparticles (PtNP) and enzyme composites with nafion, which integrated in a single chip for effectively glucose sensing. The fabricated biosensor exhibited good amperometric response to glucose with a sensitivity of 16.22 μA/mMcm2, low detection limit of 0.001 mM (signal to noise ratio is 3), and a short response time of 3 s. Moreover, the effect of interference materials and the stability of the biosensor were also investigated.
由于氧化石墨烯(TRGO)在溶液中容易脱落,本研究采用环境友好型还原剂,在最佳时间制备了水热还原氧化石墨烯(TRGO)。两个分布式传感电极串联在一起,用添加了TRGO的铂纳米粒子(PtNP)和含nafion的酶复合材料装饰,将其集成在单个芯片中,实现有效的葡萄糖传感。该传感器对葡萄糖具有良好的电流响应,灵敏度为16.22 μA/mMcm2,检测限低至0.001 mM(信噪比为3),响应时间短至3 s。此外,还对干扰材料的影响和生物传感器的稳定性进行了研究。
{"title":"A highly performed enzymatic biosensor using distributed electrodes decorated with hydrothermally treated reduced graphene oxide and platinum nanoparticles","authors":"M. F. Hossain, H. Yoon, J. Y. Park","doi":"10.1109/TRANSDUCERS.2015.7181258","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181258","url":null,"abstract":"In this work, hydrothermally reduced graphene oxide (TRGO) was developed with environment friendly reducing agent by optimum time due to exfoliate easily in solution. Two distributed sensing electrodes connected in series are decorated with TRGO added platinum nanoparticles (PtNP) and enzyme composites with nafion, which integrated in a single chip for effectively glucose sensing. The fabricated biosensor exhibited good amperometric response to glucose with a sensitivity of 16.22 μA/mMcm2, low detection limit of 0.001 mM (signal to noise ratio is 3), and a short response time of 3 s. Moreover, the effect of interference materials and the stability of the biosensor were also investigated.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89908955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
7th order sharp-roll-off bridged micromechanical filter 7阶急滚脱桥式微机械滤波器
J. Naghsh Nilchi, R. Liu, C. Nguyen
A 7th-order capacitive-gap transduced 8-MHz microme-chanical filter has been demonstrated with a channel-selecting bandwidth of 24 kHz (0.3%) and a shape factor of 1.45, which bests the previous mark of 1.86 for similar frequency MEMS-based filters. This shape factor arises from not only the sheer order of the filter, governed by seven coupled clamped-clamped beam resonators, but also from strategic bridging of its non-adjacent 1st, 4th, and 7th resonators to generate loss poles that further steepen the roll-off from passband to stopband. Interestingly, it is the extremely strong electromechanical coupling on the order of keff2~ (Cx/C0) ~17% offered by capacitive-gap transduction at HF that allows the use of so many resonators, thereby enabling this filter. The steepness of this filter's roll-off greatly increases the density of available channels in HF radios for military and Ham applications, as well as future sensor network applications enabled by these results.
一种7阶电容间隙换能型8-MHz微机械滤波器已被证明具有24 kHz(0.3%)的选道带宽和1.45的形状因子,优于之前基于相似频率的mems滤波器的1.86的标记。这种形状因素不仅源于滤波器的纯粹顺序,由七个耦合钳位箝位光束谐振器控制,而且还源于其非相邻的第1、第4和第7谐振器的战略性桥接,以产生损耗极点,从而进一步加剧从通带到阻带的滚降。有趣的是,正是高频电容间隙转导提供的keff2~ (Cx/C0) ~17%量级的超强机电耦合,才允许使用如此多的谐振器,从而使该滤波器成为可能。该滤波器滚降的陡峭度大大增加了军用和业余应用的高频无线电可用信道的密度,以及由这些结果实现的未来传感器网络应用。
{"title":"7th order sharp-roll-off bridged micromechanical filter","authors":"J. Naghsh Nilchi, R. Liu, C. Nguyen","doi":"10.1109/TRANSDUCERS.2015.7180880","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7180880","url":null,"abstract":"A 7th-order capacitive-gap transduced 8-MHz microme-chanical filter has been demonstrated with a channel-selecting bandwidth of 24 kHz (0.3%) and a shape factor of 1.45, which bests the previous mark of 1.86 for similar frequency MEMS-based filters. This shape factor arises from not only the sheer order of the filter, governed by seven coupled clamped-clamped beam resonators, but also from strategic bridging of its non-adjacent 1st, 4th, and 7th resonators to generate loss poles that further steepen the roll-off from passband to stopband. Interestingly, it is the extremely strong electromechanical coupling on the order of keff2~ (Cx/C0) ~17% offered by capacitive-gap transduction at HF that allows the use of so many resonators, thereby enabling this filter. The steepness of this filter's roll-off greatly increases the density of available channels in HF radios for military and Ham applications, as well as future sensor network applications enabled by these results.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83275905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Fast pulsed heating and impact cooling of thermal microactuators 热微执行器的快速脉冲加热和冲击冷却
S. Pandey, A. Banerjee, N. Hasan, N. Banerjee, C. Mastrangelo
This paper reports techniques to rapidly heat and cool thermal actuators in microseconds. Rapid temperature changes can lead to high-speed motion and many-fold improvement in load power delivery compared to that achievable with conventional thermal microactuator devices. Rapid heating is achieved by capacitor discharge across the heated element. Rapid cooling is achieved by impacting thin cold plungers that remove heat from hot actuator beams by ultrafast diffusion. We have fabricated and preliminary tested polysilicon thermal actuators based on these principles.
本文报道了在微秒内快速加热和冷却热致动器的技术。与传统的热微致动器相比,快速的温度变化可以导致高速运动和负载功率传输的许多倍改进。快速加热是通过在加热元件上的电容器放电来实现的。快速冷却是通过冲击薄冷柱塞实现的,该柱塞通过超快扩散从热致动器光束中去除热量。我们已经根据这些原理制造并初步测试了多晶硅热致动器。
{"title":"Fast pulsed heating and impact cooling of thermal microactuators","authors":"S. Pandey, A. Banerjee, N. Hasan, N. Banerjee, C. Mastrangelo","doi":"10.1109/TRANSDUCERS.2015.7181071","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181071","url":null,"abstract":"This paper reports techniques to rapidly heat and cool thermal actuators in microseconds. Rapid temperature changes can lead to high-speed motion and many-fold improvement in load power delivery compared to that achievable with conventional thermal microactuator devices. Rapid heating is achieved by capacitor discharge across the heated element. Rapid cooling is achieved by impacting thin cold plungers that remove heat from hot actuator beams by ultrafast diffusion. We have fabricated and preliminary tested polysilicon thermal actuators based on these principles.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86488222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modal analysis of out-of-plane vibrations in switchable piezoelectric Gallium Nitride micromechanical resonators 可开关压电氮化镓微机械谐振器的面外振动模态分析
Cheng Tu, X.L. Guo, J. E. Lee
This paper analyzes higher order out-of-plane vibrations in a piezoelectric Gallium Nitride (GaN) MEMS resonator that utilizes the two-dimensional electron gas (2DEG) as a switchable and embedded electrode. More specifically, we show that the out-of-plane vibration mode that provides the strongest electromechanical resonance (~12MHz) has an associated stress field that allows charges generated from the orthogonal stresses (σx and σy) via the piezoelectric effect to add up constructively. Besides, we show that the 2DEG bottom electrode can be depleted to reduce the resonant peak till it is indistinguishable from the noise floor. The on-off ratio between the resonant peaks at zero gate bias vs. 2DEG depletion is 41dB and resonator has a quality factor of 3,900.
本文分析了利用二维电子气体(2DEG)作为可切换嵌入电极的压电式氮化镓(GaN) MEMS谐振器中的高阶面外振动。更具体地说,我们表明,提供最强机电共振(~12MHz)的面外振动模式具有相关应力场,该应力场允许通过压电效应从正交应力(σx和σy)产生的电荷建设性地加起来。此外,我们还表明,可以耗尽2DEG底电极以降低谐振峰,直到它与噪声底难以区分。零栅极偏置与2℃耗尽时谐振峰之间的通断比为41dB,谐振器的质量因数为3900。
{"title":"Modal analysis of out-of-plane vibrations in switchable piezoelectric Gallium Nitride micromechanical resonators","authors":"Cheng Tu, X.L. Guo, J. E. Lee","doi":"10.1109/TRANSDUCERS.2015.7181341","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181341","url":null,"abstract":"This paper analyzes higher order out-of-plane vibrations in a piezoelectric Gallium Nitride (GaN) MEMS resonator that utilizes the two-dimensional electron gas (2DEG) as a switchable and embedded electrode. More specifically, we show that the out-of-plane vibration mode that provides the strongest electromechanical resonance (~12MHz) has an associated stress field that allows charges generated from the orthogonal stresses (σx and σy) via the piezoelectric effect to add up constructively. Besides, we show that the 2DEG bottom electrode can be depleted to reduce the resonant peak till it is indistinguishable from the noise floor. The on-off ratio between the resonant peaks at zero gate bias vs. 2DEG depletion is 41dB and resonator has a quality factor of 3,900.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86565385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A CMOS-based poly-silicon sub-micron wire biosensor for multiple biomarker detections in clinical samples 一种基于cmos的多晶硅亚微米线生物传感器,用于临床样品中多种生物标志物的检测
I-Shun Wang, J.-K. Lee, H.-H Lin, Y.-H Sun, G.-Y. Chen, C.-T. Lin
This paper reports an integrated poly-silicon sub-micron wire biosensor for multiple biomarker detections in clinical samples. It is fabricated by a commercialized 0.35μm CMOS process node. For the first time, an integrated CMOS biosensor chip is experimentally validated in human whole blood and plasma. In this work, a series of anemia/diabetes biomarkers, such as low-density lipoprotein (LDL), hemoglobin (Hb), glycated hemoglobin (HbA1c), and ferritin are examined by the developed CMOS poly-silicon biosensors. The experimental results successfully indicate differences of biomarker concentrations between sick and healthy people. As a consequence, this work demonstrates a potential of CMOS applications in clinical biomarker detections for point-of-care technology.
本文报道了一种用于临床样品中多种生物标志物检测的集成多晶硅亚微米线生物传感器。采用商业化的0.35μm CMOS工艺节点制造。首次在人体全血和血浆中对集成CMOS生物传感器芯片进行了实验验证。在这项工作中,一系列的贫血/糖尿病的生物标志物,如低密度脂蛋白(LDL),血红蛋白(Hb),糖化血红蛋白(HbA1c),铁蛋白检测开发的CMOS多晶硅生物传感器。实验结果成功地表明了病人和健康人之间生物标志物浓度的差异。因此,这项工作证明了CMOS在临床生物标志物检测中的应用潜力。
{"title":"A CMOS-based poly-silicon sub-micron wire biosensor for multiple biomarker detections in clinical samples","authors":"I-Shun Wang, J.-K. Lee, H.-H Lin, Y.-H Sun, G.-Y. Chen, C.-T. Lin","doi":"10.1109/TRANSDUCERS.2015.7181260","DOIUrl":"https://doi.org/10.1109/TRANSDUCERS.2015.7181260","url":null,"abstract":"This paper reports an integrated poly-silicon sub-micron wire biosensor for multiple biomarker detections in clinical samples. It is fabricated by a commercialized 0.35μm CMOS process node. For the first time, an integrated CMOS biosensor chip is experimentally validated in human whole blood and plasma. In this work, a series of anemia/diabetes biomarkers, such as low-density lipoprotein (LDL), hemoglobin (Hb), glycated hemoglobin (HbA1c), and ferritin are examined by the developed CMOS poly-silicon biosensors. The experimental results successfully indicate differences of biomarker concentrations between sick and healthy people. As a consequence, this work demonstrates a potential of CMOS applications in clinical biomarker detections for point-of-care technology.","PeriodicalId":6465,"journal":{"name":"2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75167525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS)
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1