A. Kumar , C. Kaur , S. S. Padhee ,
 PEC University of Technology, Chandigarh, India
 IIT Ropar, Punjab, India
This paper explores the complexities of a dragonfly's flapping wing motion. It includes the literature as well as analytical results using simulations done in COMSOL Multiphysics® software. The study depicts the Fluid-Structure Interaction of the 2D wing (airfoil) with air, governed by Naiver-Stokes equations. The wing follows mathematical functions and is given motion similar to dragonfly's ...
D. Kappe, A. Hütten
University of Bielefeld, Bielefeld, Germany
The possibility to detect and probe molecules in microfluidic devices gives rise to interesting applications. There are different approaches how to detect and probe particles, but a common step, for most methods, is to place the particles on a sensor. This can be done by applying external field gradients, or in this case by utilizing gravitational and hydrodynamic effects. Therefore, the sensor ...
M. Cartas-Ayala, R. Karnik
Massachusetts Institute of Technology, Cambridge, MA, USA
Characterization of particles has numerous applications in science and diagnostics. Recently, particle passage through constrained microchannels has been proposed to characterize particles based on their passage velocity. Nevertheless, there is no clear understanding of how the physics in this system interact. Here we quantify the effects of the flow around the particle by simulating the passage ...
R. Xu , M. Guizzetti , K. Astafiev , E. Ringgaard , T. Zawada ,
 Meggitt A/S, Kvistgaard, Denmark
FEM (Finite Element Method) modelling software such as COMSOL Multiphysics® can be a powerful tool for modelling the behavior and response of piezoelectric materials and devices . Devices based on piezoelectric crystals are particularly well suited, because the polarization magnitude in crystals is predetermined and its orientation is defined by how it was cut with respect to the lattice ...
S. Burgarella, B. Dell’Anna, V. Perna, G. Zarola, and S. Merlo
STMicroelectronics, Agrate Brianza, MI, Italy
Dipartimento di Elettronica, Università degli Studi di Pavia, Pavia, Italy
Dielectrophoresis (DEP) is a method for cell manipulation without physical contact in lab-on-chip devices, since it exploits the dielectric properties of cells suspended in a microfluidic sample, under the action of locally generated high-gradient electric fields. The DEP platform that has been developed offers an integrated solution for customizable applications. Several functional units, ...
Dr. Piotr Kropelnicki
Mu Xiao Jing
Wan Chia Ang
Andrew B. Randles
Institute of Microelectronics, Agency for Science, Technology and Research, Singapore, Singapore
In this research, we performed multiple COMSOL Multiphysics® simulations. We analyzed the dispersion curves of waves in a LAMB wave pressure sensor; simulated a thin metal film in a microbolometer and observed the resulting stress; investigated the thermal behavior of an acoustic wave microbolometer; and modeled the fluid-structure interaction (FSI) for piezoelectric-based energy harvesting from ...
Finite Element Evaluation of Surface Acoustic Wave Reflection and Scattering from Topographic Irregularities Comparable with the Wavelength
S. Yankin[1,2], S. Suchkov, S. Nikitov[2,3], B. Sveshnikov, I. Shatrova 
Joint International Laboratory LICS/LEMAC, IEMN UMR CNRS 8520, EC Lille,Villeneuve d’Ascq, France
Saratov State University, Saratov, Russia
Institute of Radio-engineering and Electronics, Russian academy of Science, Moscow, Russia
Design of SAW devices needs the accurate study of the scattering fields, arising from the interaction of SAW with topographic irregularities. To solve this problem FE methods very perspective, because with its help one can take into account the actual geometry of the electrodes and reflectors. This work describes results of original time domain calculation of 2D SAW scattering fields in delay ...
R. Berthelon , D. Dutartre , F. Andrieu 
 STMicroelectronics, France
 CEA Leti, France
The integration of high level of stress in field effect transistors is performed through incorporation of intrinsically strained SiGe layers. With the help of COMSOL simulations, we performed two studies addressing the level of stress in the area of interest. In the first case, we analyzed the geometric effects of the SiGe film stress relaxation on the edges. In a second time, we studied the ...
L. Weber , L. Fromme , D. Zielke ,
 University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany
 University of Applied Sciences Bielefeld, Institute BIFAM, Bielefeld, Germany
Piezo buzzers, made of piezoelectric material glued on a brass plate, are usually used as signaler, but the buzzer can also be used to convert mechanical into electrical energy. If acceleration influences the buzzer, the structure is bent by its mass and a voltage can be measured between the connection pads. With a small, additional weight on the buzzer the useable electrical energy becomes ...
J. Mares-Carreño , G. S. Abarca-Jiménez , M. A. Reyes-Barranca ,
 Escuela Superior de Ingeniería Mecánica y Eléctrica, Instituto Politécnico Nacional, Ciudad de Mexico, D.F., Mexico
 Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México, D.F., Mexico
The paper exhibits the process followed to obtain the geometry of a support for a MEMS inertial sensor by means of a topology optimization process. The SIMP method is used for the optimization process in which the objective is to obtain a support structure with a minimum rigidity expressed by a maximum allowed displacement in a stablished work direction. In the application of the SIMP method a ...