P. D. Hanasi, B. G. Sheeparamatti, B. B. Kirankumar
Basaveshwar Engineering College, Bagalkot, Karnataka, India
Micro cantilevers are the basic MEMS structures, which can be used both as sensors and actuators. The . The objective of this work is to study concept of pull-in voltage and how to reduce the same. Voltage is applied to upper cantilever beam and lower contact electrode is made as ground. By increasing common area between cantilever beam and contact electrode, and also by reducing thickness of ...
Viscous damping of a periodic perforated MEMS microstructure when the Reynolds’ equation cannot be applied: Numerical simulations
D. Homentcovschi, and R.N. Miles
Department of Mechanical Engineering, SUNY Binghamton, NY
This paper develops a computational model for determining the total damping coefficient for a unit cell of a MEMS microscale device containing a repetitive pattern of holes. The basic cell of the microstructure is approximated by an axi-symmetric domain and the velocity and pressure fields are determined from solutions of the Navier-Stokes equations using the finite element software package ...
A. Weddemann, J. Jadidian, S. Khushrushahi, Y. Kim, and M. Zahn
Research Laboratory of Electronics
Massachusetts Institute of Technology
The modeling of ferromagnetic materials is a challenging task of high industrial and academic impact. Thin film and granular systems form the basis of novel spintronic devices such as modern hard drives with a high data area storage density. In order to push the current limits even further and to design more efficient devices, a strong understanding of the governing dynamics is required. We ...
D. Kappe, A. Hütten
Bielefeld University, Bielefeld, Germany
Designing and constructing a lab-on-a-chip device poses a variety of questions. Transport of all required substances, detection of the analyte and its deposition on a sensor have to be incorporated. Different strategies have been developed to achieve good coverages of the sensor, like employing electric or magnetic gradients. On the basis of a ramp like structure, the binding of the analyte to a ...
Siram Sai Krishna, Nuti Venkata Subrahmanya Ayyappa Sai, Dr.K.Srinivasa Rao
Lakireddy Bali Reddy College of Engineering, Mylavaram, Andhra Pradesh, India
Professor & HOD, Dept. of Electronics and Instrumentation Engineering, Lakireddy Bali Reddy College of Engineering, Mylavaram, Andhra Pradesh, India
The Micro electro mechanical systems (MEMS) technology provides us a platform to interface between mechanical and electrical components. In this paper, we have designed MEMS accelerometer based on piezoelectric property, and simulated using COMSOL Multiphysics®. The design, which has PZT kept in the annular diaphragm, provides good sensitivity. When this accelerometer is subjected to stress ...
N. Qudus, T. Mahbub, S. A. Ali, and M. Shajahan
 Bangladesh University of Engineering and Technology, Dhaka Bangladesh
A finite element model is employed to describe the electric potential distribution and electroosmotic flow field inside a wavy cylindrical channel. The model uses coupled Laplace and Poisson-Boltzmann to evaluate the electric potential distribution inside the channel. It also contains continuity and Navier–Stokes equations for the solution of fluid flow. A particle trajectory model was ...
O. Myers , M. Anjanappa , and C. Freidhoff 
 Mississippi State University, Mississippi State, MS, USA
 University of Maryland Baltimore County, Baltimore, MD, USA
 Northrop Grumman Corporation, Electronics Systems Sector, Baltimore, MD, USA
This paper presents a methodology towards designing, analyzing and optimizing piezoelectric interdigitated microactuators using COMSOL Multiphysics. The models used in this study were based on a circularly interdigitated design that takes advantage of primarily the d33 electromechanical piezoelectric constant coefficient. Because of the symmetric nature of the devices, 2D axisymmetric models ...
N.N. Sharma, and A. Tekawade
Mechanical Engineering Group, Birla Institute of Technology & Science, Pilani, Rajasthan, India
A simple design for a microfluidic flow system for use in mixing or reacting assays with limited sample availability has been proposed and analyzed using COMSOL\'s multiphysics simulation package. The design is based on differential electroosmotic flow concept which has facilitated a number of interesting flow phenomena in micro-domains. For an average potential drop of about 86 kV/m in the ...
S. Suganthi, M. Anandraj, and L. Sujatha
Department of Electronics & Communication Engineering, Rajalakshmi Engineering College, Chennai, India
Department of Physics, Rajalakshmi Engineering College, Chennai, India
Porous Silicon (PS) can easily be formed by electrochemical etching of silicon in HF based electrolytes at room temperature. Since, PS is compatible with silicon IC technology; it finds lot of applications in the fabrication of MEMS devices. In the current study, we discuss the design of a condenser microphone using a Silicon/ Porous Silicon composite membrane as a movable plate. The performance ...
S. Druart, D. Flandre, and L.A. Francis
Université catholique de Louvain - ICTEAM, Louvain-la-Neuve, Belgium
In this paper, a methodology to simulate the electric behavior of spiral inductances is presented and discussed. All the methodology is built with the COMSOL software used with the Matlab scripting interface and then allows performing fully parameterized simulations. The program architecture is explained and is used to simulate two applications. The first calculates the voltage induced by an ...