T. Kaya, B. Shiari, K. Petsch, and D. Yates
Central Michigan University, School of Engineering and Technology, Mount Pleasant, MI
University of Michigan, Dept. of Electrical Engineering and Computer Science, Ann Arbor, MI
In this work, a MEMS low-g accelerometer with three sensitive directions is designed for health monitoring applications. The accelerometer may have different sensitivity in different axes. The proof-mass of the device is suspended by four serpentine springs, and the comb drive structure is used to form the differential capacitor to measure the displacement of the proof-mass. The structure has an ...
G. Gomila , L. Fumagalli , R. Fabregas ,
 Institut de Bioenginyeria de Catalunya (IBEC), Departament d’Electrònica, Universitat de Barcelona, Barcelona, Spain
 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
 Institut de Bioenginyeria de Catalunya (IBEC), Universitat de Barcelona, Barcelona, Spain
Electrical scanning probe microscopy (SPM) techniques, such as electrostatic force microscopy, nanoscale impedance microscopy or scanning near field microwave microscopy, are a relatively new branch of microscopy techniques that can generate images of the nanoscale electrical properties of samples (conductivity, permittivity, charge, etc.). These techniques scan the surface of a sample ...
S. Gupta, T. Pahwa, R. Bansal, V. Bansal, B. Prasad, D. Kumar
Electronic Science Department Kurukshetra University, Kurukshetra, Haryana
A new design of electrostatic comb drive actuator is presented in this paper by using different spring designs and with different folded beam lengths. An increased displacement of lateral comb drive actuator will subsequently be accomplished with the same actuation voltage. Stress distribution over different spring designs are simulated by COMSOL 3.5a using a standard comb drive with 4 movable ...
B. Cahill, A. Giannitsis, G. Gastrock, M. Min[1,2], and D. Beckmann
Institut für Bioprozess- und Analysenmesstechnik e.V., Heiligenstadt, Germany
 Department of Electronics, Tallinn University of Technology, Tallinn, Estonia
Electrowetting occurs with the electrical control of the surface wetting properties through the application of an electric potential. A simulation of electrowetting driven droplet dynamics is performed using the COMSOL Multiphysics level-set method for a sessile droplet and for a droplet in a microchannel. The response of the drop to a step voltage is studied. The contact angle at one edge of ...
S. Gorelick, M. Leivo, U. Kantojärvi
VTT Technical Research Centre of Finland, Espoo, Finland
Excessive air damping can be detrimental to the performance of oscillating MEMS components. Complex systems, such as structures in pre-etched cavities or angular comb-drive scanning mirrors, typically require simulations to reliably evaluate the air damping. The simulated and experimental performance of the following systems was evaluated and compared: two types of out-of-plane cantilevers, in ...
Time Dependent Simulations of Thermoelectric Thin Films and Nanowires for Direct Determination of their Efficiency with COMSOL Multiphysics®
M. Muñoz Rojo, J. Jose Romero, D. Ramos, D. Borca-Tasciuc, T. Borca-Tasciuc, M. Martín Gonzalez
Instituto de Microelectrónica de Madrid, Madrid, Spain
Rensselaer Polytechnique Institute, Troy, New York, USA
Thermoelectric materials are one of the most promising materials for future and nowadays energy harvesting devices, as they can convert heat into electricity and vice-versa. The efficiency of thermoelectric materials is related with the figure of merit, ZT. Our work deals with the determination of the parameters that affect the measurement of the ZT with the Harman technique and the best ...
Parametric Study of Polyimide - Lead Zirconate Titanate Thin Film Cantilevers for Transducer Applications
A. Arevalo, I.G. Foulds
King Abdullah University of Science and Technology, Thuwal, Kingdom of Saudi Arabia
The simulation of the piezoelectric actuation of the micro-cantilever is presented. Lead Zirconate Titanate (PZT) was chosen for the device fabrication design, due to its thin film processing flexibility. Four layers compose the cantilever structures presented in this work: PZT (piezoelectric material), Platinum (electrodes) and Zirconium Oxide as the buffer layer for the PZT film and polyimide ...
Rachita Shettar, Dr. B G. Sheparamatti
Basaveshwar Engineering College, Bagalkot, Karanataka, India
In this paper modeling and simulation results of a thermal bimorph is capable of producing increased displacement for increasing temperatures are presented. Thermal bimorphs are popular actuation technology in MEMS (Micro-Electro-Mechanical Systems). Bimorph actuators consist of two materials with different coefficients of thermal expansion. The main objective of this work is to investigate the ...
S. Rouabah, A. Chaabi
Electronics Department, Constantine University, Constantine, Algeria
In this work, we have taken a model which is simulated using COMSOL Multiphysics®. It was used as a tool to design, characterize and to simulate an example which is nanofibers based piezoelectric energy generators. The results are compared with other available sources but using with another materials. After applying a pressure on the top of surface of nanogenerator, the output parameters ...
S. Dixit, R. C. Jain
Jaypee Institute of Information Technology, Noida, Uttar Pradesh, India
Surface Acoustic Waves (SAW) is the acoustic wave that propagates along the surface of the substrate with amplitude decaying exponentially away from the surface. A basic SAW device consists of two IDT’s on a piezoelectric substrate such as quartz. Surface Acoustic Wave can be generated by application of a voltage to an IDT deposited on the surface of a piezoelectric substrate. The ...