A. Dwivedi , G. Khanna ,
 NIT Hamirpur, Hamirpur, Himachal Pradesh, India
This work describes the design and optimization of three prototypes of microelectromechanical systems (MEMS) capacitive accelerometer-based middle ear microphone. The microphone is intended for middle ear hearing aids as well as future fully implantable cochlear prosthesis. The analysis is done using COMSOL Multiphysics®. The maximum applied acceleration was considered 1g. Human temporal bones ...
Design and Analysis of Micro-Heaters for Temperature Optimization using COMSOL Multiphysics for MEMS Based Gas Sensor
V. S. Selvakumar, L. Sujatha
Rajalakhmi Engineering College, Chennai, Tamil Nadu, India
Micro-Heaters are the key components in sub-miniature micro-sensors, especially in gas sensors. The metal oxide gas sensors utilize the properties of surface adsorption to detect changes in resistance as a function of varying concentration of different gases . To detect the resistive changes, the heater temperature must be in the requisite temperature range over the heater area. Hence the ...
V. S. P. Rajesh ,
 St. Mary's Group of Institutions, Hyderabad, India
3D model of MEMS based SAW gas sensor is designed using Focused Inter Digital Transducers design. Surface displacement & Electrical potential are analyzed at resonance & anti-resonance frequencies. Operating frequency is from 8.7 MHz which acts as start band and 9.2 MHz as stop band. FIDT model helps in energy optimization by focusing the propagating wave more on to the poly-chemical coating. ...
S. Kundu , H. B. Nemade ,
 Indian Institute of Technology Guwahati, Guwahati, Assam, India
The paper presents simulations of uniform thickness and thickness-tapered types of piezoelectric vibration energy harvesters using COMSOL Multiphysics software. The simulated vibration energy harvesters have bimorph cantilever structure with end mass. Tapering the thickness of the piezoelectric layer in bimorph towards the free end is found to improve the stress distribution in the beam and ...
Design and Simulation of High-Throughput Microfluidic Droplet Dispenser for Lab-on-a-Chip Applications - new
C. Jin, X. Xiong, P. Patra, R. Zhu, J. Hu
Department of Biomedical Engineering, University of Bridgeport, Bridgeport, CT, USA
Department of Electrical and Computer Engineering, University of Bridgeport, Bridgeport, CT, USA
Department of Mechanical Engineering, University of Bridgeport, Bridgeport, CT, USA
Digital Microfluidic Biochip (DMFB) has been widely used in Lab-on-a-Chip (LoC) for disease diagnosis and treatment applications. To quickly convert traditional analog fluidic sample into digital droplets for DMFB processing, a high-throughput microfluidic droplet dispenser device is needed. In this paper, a high-throughput analog-to-digital microdroplet dispenser for Lab-on-a-Chip application ...
D. Chauhan, B. D. Pant
Kurukshetra University, Kurukshetra, Haryana, India
CSIR- Central Electronics Engineering Research Institute, Pilani, Rajasthan, India
Load cells are force sensors, which are used in weighing equipment. The objective of this work is to develop MEMS based load cell. In this work two different load cell designs were simulated. First design is based on compressing a meander like polysilicon strain gage for the measurement of high forces up to 10kN. Second design is based on MEMS pressure sensor consisting of membrane, on which ...
M. Kaushik , S. Katti , V. Saradesai , P. Naragund , P. Vidhyashree , A. K. V. Nandi 
 B.V. Bhoomaraddi College of Engineering and Technology, Hubli, India
This article describes the design of MEMS based cantilever structure intended for determination of blood group and it is compared with manual method. Cantilever structure design has a sensing layer and when a blood sample comes in contact with this, results in coagulation. The surface tension in turn occurs due to chemical and biological reactions of antigen and antibodies resulting in ...
N. Bhalla, S. Li, and D. Chung
Chung Yuan Christian University, Taiwan, (R.O.C)
National Tsing Hua University, Taiwan, (R.O.C)
Different configurations of MEMS based accelerometer has been made and analysed using COMSOL Multiphysics. The designs presented in this paper consist of a square shaped proof mass with flexures supporting it. Different position and varied number of supporting flexures attached to the proof mass makes each configuration distinct. The piezoresistors are placed near the proof mass and frame ends ...
V. Longinotti, S. Di Marco, S. Pistilli, F. Costa, M. Giusti, G. Gammariello, I. Gison, G. Latessa[1,2], D. Mascolo, A. Buosciolo
Altran Italia, Roma, Italy
Consorzio DeltaTi Research, Milano, Italy
The main topic of this paper is the development of an innovative tool that can be applied in a wide range of complex problems, to simulate, optimize and improve system design especially when dealing with huge numbers of parameters and constraints. The new methodology is obtained by joining the power of COMSOL Muliphysics® simulation with the modern optimization approach of genetic algorithms. ...
T. Desai , R. Dudhe , S. Ayyalusamy ,
 Manipal University, Dubai, UAE
Piezoelectric energy conversion has received great attention for vibration-to-electric energy conversion over the last five years. A typical piezoelectric energy harvester is a unimorph or a bimorph cantilever located on a vibrating host structure, to generate electrical energy from base excitations. In this paper we have optimized the dimensions of the proof mass and the bimorph piezoelectric ...