Strauss, D.J., Trenado, C.
Institute of New Materials, Saarbrücken
Mathematical modeling at the Institute of New Materials has played a crucial role in supporting the manufacturing and design of new technologies of nanomaterials, whose applications range from transportation, electronics and optics engineering to environmental sciences. In this paper, we focus our attention to two mathematical models together with their corresponding FEMLAB simulations: The ...
J. T. Andrews, R. Choubey, O P Choudhary, N. Malviya, A. Patel, M. Kumar, S. Chouksey, J. Solanki
National MEMS Design Center, Department of Applied Physics, Shri G S Institute of Technology & Science, Indore 452003 MP, India
A logic gate performs a certain Boolean logic operation on one or more logical inputs and produces a single logical output. The logic values are either “true” or “false.” Logic gates are bistable devices, that is, they may yield one of these two possible stable outputs. The NAND logic is a universal gate; any logic operation can be performed with various combinations of NAND logics. Many ...
G. Vijila, S. Vijayakumar, M. Alagappan, and A. Gupta
PSG College of Technology
Tamil Nadu, India
This paper projects a novel 3D capacitive accelerometer design to identify a severe accident and initiate airbag deployment systems. It will detect the rapid negative acceleration of the vehicle to avoid the severity of the collision. Such a device demands excellent performance in terms of sensitivity, noise immunity, linearity, bias and scale factor stability over time and environmental changes. ...
P. Lazarou, C. Rotinat
CEA LIST/DIASI/LRI, Paris, France
A grand variety of microactuator technologies and demonstrators has been introduced during the last years. Of particular interest are the microactuators based on phase change materials and especially paraffin wax, which can volumetrically expand up to 15%, providing high force actuation. The object of this study is the numerical validation of a paraffin microactuator concept by coupling multiple ...
M. Hashiguchi, Y. Sumiyoshi
Keisoku Engineering System Co., Ltd., Tokyo, Japan
Achieving passive device working over two GHz bands for next generation mobile phone has been strongly desired. This paper investigated the spurious mode suppression for the BAW resonator. The border-frame technique which has been proposed in many literatures is examined here numerically. It was found that the present finite-element analysis using COMSOL Multiphyiscs® was validated via ...
P. Aguirre, F. Figueroa
Sensor Technik Wiedemann GmbH, Kaufbeuren, Bayern, Germany
Pressure Sensors are widely used in the automotive industry. Their main use is the dynamic monitoring of pressure inside combustion engines. To achieve a good signal accuracy, the design of pressure sensors can be improved with FEM calculations of stress and strains on the measuring cell depending on their geometry and material properties. The geometry is adapted according to a special ...
Aarthi E, Pon Janani S, Vaidevi S, Meenakshi Sundaram N , Chandra Devi K
PSG College of Technology, Coimbatore, Tamil Nadu, India
Blind cave fish are capable of sensing flows and movements of nearby objects even in dark and murky water conditions with the help of arrays of pressure-gradient sensors present on their bodies called lateral-lines. To emulate this functionality of lateral-lines for autonomous underwater vehicles, an array of polymer MEMS pressure sensors have been developed that can transduce underwater pressure ...
Design and Simulation of Piezoelectric Vibration Energy Harvesters of Various Shapes using COMSOL Multiphysics®
Priya Chhabra, Arjun Shetty
Electronic Science Department , Kurukshetra University, Kurukshetra, Haryana, India
Electrical Communication Engineering, Indian Institute of Science, Bangalore, Karnataka, India
Various cantilever geometries (conventional rectangular,pi,Tandtriangular) are simulated using the Structural Mechanics module of COMSOL Multiphysics® to compare their spring constants. A layer of piezoelectric material (ZnO,AlN and PZT are modeled) is added to the cantilever and using the Piezoelectric Devices physics of COMSOL Multiphysics®, we determine the piezoelectric voltage that is ...
N. Alcheikh, C. Ayela, I. Dufour
Univ. Bordeaux, IMS Lab, Pessac, France.
Electrostrictive polymers have been of significant interest over the last years for energy harvesting. Principle is based on the conversion of a mechanical deformation into electricity. The stored energy basically depends on the mechanical strain induced into an electrostrictive polymer by the mechanical resonant vibration of a microcantilever supporting the electrostrictive layer. In this work, ...
T.H. Tan, S.J.N. Mitchell, D.W. McNeill, H. Wadsworth, S. Strahan
Queen's University Belfast, Belfast, United Kingdom
Schrader Electronics Ltd, Antrim, United Kingdom
The piezoresistance effect is defined as change in resistance due to applied stress. Silicon has a relatively large piezoresistance effect which has been known since 1954. A four point bending setup is proposed and designed to analyze the piezoresistance effect in p-type silicon. This setup is used to apply uniform and uniaxial stress along the crystal direction. The main aim of this work is to ...