Results 41 to 50 of about 633,776 (299)

Biaxial Piezoelectrically Driven MEMS Mirror with Large Design Flexibility

Proceedings
In this work, a biaxial, piezoelectrically driven resonant MEMS mirror with large design flexibility is presented. After FEM-based design optimization to reduce material stress and thereby maximize the achievable total optical scanning angles, fabricated
Lena Wysocki, Patrick Schütt, Jörg Albers, Gunnar Wille, Erdem Yarar, Paul Raschdorf, Lianzhi Wen, Shanshan Gu-Stoppel   +7 more
doaj   +1 more source

PZT-Actuated and -Sensed Resonant Micromirrors with Large Scan Angles Applying Mechanical Leverage Amplification for Biaxial Scanning

Micromachines, 2017
This article presents design, fabrication and characterization of lead zirconate titanate (PZT)-actuated micromirrors, which enable extremely large scan angle of up to 106° and high frequency of 45 kHz simultaneously.
Shanshan Gu-Stoppel, Thorsten Giese, Hans-Joachim Quenzer, Ulrich Hofmann, Wolfgang Benecke   +4 more
doaj   +1 more source

Fabrication of Multifunctional FeSi Gyroid Lattice Composites via Additive Manufacturing and Polymer Infiltration

Advanced Engineering Materials, EarlyView.
A two‐step approach combining laser powder bed fusion of FeSi electrical steel with Bakelite infiltration enables the fabrication of multifunctional gyroid lattice composites. The resulting structures exhibit high strength, magnetic anisotropy, and complete polymer infiltration, demonstrating a simple and scalable route toward lightweight, mechanically
Angelo F. Andreoli, Mayumi A. Nakahashi, Vitor E. Pinotti, Felipe O. C. Bernardo, Lidiane C. Costa, Francisco G. Coury, Ronei C. de Oliveira, Adilson J. A. de Oliveira, Carlos E. H. Ventura, Piter Gargarella   +9 more
wiley   +1 more source

Modelling of Evanescent Field Scattering

Proceedings, 2020
Evanescent field particle scattering is a promising method for single particle detection. In this study, we performed a detailed numerical analysis to show the possibilities and limitations of analytical models for predicting the capabilities of this ...
Andreas Tortschanoff, Marcus Baumgart, Jaka Pribošek   +2 more
doaj   +1 more source

Porous, multi-layered piezoelectric composites based on highly oriented PZT/PVDF electrospinning fibers for high-performance piezoelectric nanogenerators

Journal of Advanced Ceramics, 2022
Piezoelectric nanogenerators (PENGs) that can harvest mechanical energy from ambient environment have broad prospects for multi-functional applications. Here, multi-layered piezoelectric composites with a porous structure based on highly oriented Pb(Zr0 ...
Xiangxin Du, Zheng Zhou, Zhao Zhang, Liqin Yao, Qilong Zhang, Hui Yang   +5 more
doaj   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Silicon Microrefrigerator [PDF]

IEEE Transactions on Components and Packaging Technologies, 2006
We fabricated a silicon microrefrigerator on a 500-mu m-thick substrate with the standard integrated circuit (IC) fabrication process. The cooler achieves a maximum cooling of 1 degrees C below ambient at room temperature. Simulations show that the cooling power density for a 40 x 40 mu m(2) device exceeds 500 W/cm(2). The unique three-dimensional (3-D)
Zhang, Y, Zeng, G H, Shakouri, A
openaire   +2 more sources

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Magnetic Field Sensors for Non-Invasive Current Monitoring in Wire-Bond-Less Power Modules

Proceedings
A non-invasive implementation of a planar magnetoresistive sensor on top of copper interconnected power modules is proposed. This solution allows for the real-time monitoring of the electrical current flowing across the power modules.
Perla Malagò, Stefano Lumetti, Dominik Holzmann, Michael Ortner, Ali Roshanghias   +4 more
doaj   +1 more source

Fabrication of low-loss SOI nano-waveguides including BEOL processes for nonlinear applications [PDF]

Journal of the European Optical Society-Rapid Publications, 2012
We report successful fabrication of low-loss SOI nano-waveguides with integrated PIN diode structures. The entire fabrication process is done on a 200 mm BiCMOS toolset using front-end-of-line (FEOL) and back-end-of-line (BEOL) processes and does not ...
Tian H., Winzer G., Gajda A., Petermann K., Tillack B., Zimmermann L.   +5 more
doaj   +1 more source