D. Das, S. Sohail, S. Das, and K. Biswas
Electrical Engineering Department, IIT Kharagpur, India
School of Medical Science and Technology, IIT Kharagpur, India
Electrowetting on Dielectrics (EWOD)systems is widely practiced digital microfluidic technique, used in Lab-on-a-Chip (LoC) system for biomedical application. In EWOD, with applied potential, the droplet minimizes its surface energy by transiting towards the actuated electrode. The problems with EWOD device for biological sample are that it will damage the cells if applied voltage across it ...
MEMS Electrostatic Comb Actuator: A Comparison of Different Structure Designs and Materials using COMSOL 3.5a
S. Kapoor, D. Aggarwal, and A. Gujjar
University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, Haryana, India.
Electronics Science Department, University Institute of Engineering and Technology, Kurukshetra University, Haryana, India.
The micro machining technology that emerged in the late 1980’s can provide micron sized sensors and actuators. Actuators are used for the transformation of non- mechanical input energy into mechanical output energy. There are many types of micro- actuation mechanisms, most commonly used are piezoelectric, magnetic, thermal, SMA, electrochemical, electrostatic actuation. Electrostatic actuation ...
S. Gawade, P. P. Date, and S. B. Sharma
Production Engineering. Dept. SGGS IE&T, Nanded, India
Mechanical Engineering. Dept, IIT, Bombay, India
Electromagnetic forming (EMF) is a typical high speed forming process using the energy density of a pulsed magnetic field to form workpieces made of metals with high electrical conductivity like e.g. aluminium. This forming process can be very advantageous as compared to conventional forming process. EMF process is simulated by a commercial finite element analysis (FEA) solver, COMSOL ...
R. Kancharla, and M. Ramakrishna
Padmasri Dr. B.V.Raju Institute of Technology
Medak Dist, AP, India
The limestone calcination reaction is endothermic and will proceed only if the partial pressure of CO2 in the gas above the solid surface is less than the decomposition pressure of the CaCO3. As the reaction is endothermic, the conventional process for calcination uses coal firing in rotary kiln with limestone feed to get the desired temperatures. Microwave heating of limestone is proposed to ...
S. Babu, and P. Manohar
Department of Electrical and Electronics Engineering, M S Ramaiah Institute of Technology, Bengaluru, Karnataka, India
Department of Medical Electronics, M S Ramaiah Institute of Technology, Bengaluru, Karnataka, India
Valveless micropumps have the advantage of being composed of least number of movable parts and hence can be used for long-term drug delivery applications. Their working principle is based on reciprocal forcing of fluid by an actuator through diffuser/nozzle elements generating a rectified mean flow. Micropumps based on different actuating mechanisms have already been designed and fabricated ...
A. R. Kalaiarasi, and S. H. Thilagar
Electrothermal actuators are capable of providing larger displacements compared to electrostatic actuators. Four designs for ETC actuators with the same material properties and same dimensions are studied.
Modeling and Simulation of Circular and Square Diaphragm Absolute Micro Pressure Sensors using COMSOL
M. Sundaram, A. Simha, S M. Kulkarni, and S. Bhat
Department of ICE, Manipal Institute of Technology, Manipal, India
Department of Mechatronics, National Institute of Technology, Suratkal, India
Department of Mechanical, National Institute of Technology, Suratkal, India
Department of E&C, Manipal Institute of Technology, Manipal, India
The aim of this paper is to model and simulate a Circular and Square diaphragm absolute micro pressure sensors. With the applied pressure, the change in deflection and stress pattern of the diaphragm is analytically determined. The structures are then simulated using COMSOL Multiphysics®. The results obtained from analytical equations are compared with simulated results. The range and ...
FEM Study on the Effect of Metallic Interdigital Transducers on Surface Acoustic Wave(SAW) Velocity in SAW Devices
A. K. Namdeo, and H. B. Nemade
Department of Electronics and Electrical Engineering
Indian Institute of Technology Guwahati
In this paper, we present study on the mass loading effect of the interdigital transducer (IDT) on surface acoustic wave (SAW) velocity in SAW devices, using COMSOL Multiphysics. We have simulated a one port SAW resonator made on YZ lithium niobate substrate and investigated the reduction of SAW velocity caused by the mass loading of aluminum IDT fabricated over the substrate, using finite ...
K. Singh, N. Kothari, and S. Choudhary
Electronics and Communication Engineering Department
Geetanjali Institute of Technical Studies
This paper presents the ill-effects of EM exposure through experiment, simulation and modelling using COMSOL Multiphysics. Biological Effects of microwave radiations on living creatures are studied supported with the practical results.
Determination of Fundamental Frequency of a Thin Rectangular Perforated Plate using COMSOL Multiphysics
S. V. N. B. Prasad, and B. Raghavendra
BITS PILANI K K BIRLA
GOA CAMPUS, India
COMSOL Multiphysics 4.0 is being used to simulate the free vibrations of a plate. The results obtained by simulation in COMSOL are in close proximity to that found by Fast Fourier Transform analyzer and analytical method. As of now the vibration analysis of thin rectangular plates with perforations in rectangular pattern has been carried out. The study of vibration analysis of thin rectangular ...