P. Pattanaik, S. K. Kamilla, D. P. Das, S. K. Pradhan
MEMS Design Center, Institute of Technical Education & Research (ITER), Sikhya ‘O’ Anushandhan University, Bhubaneswar, Odisha, India
Process Engineering and Instrumentation Lab, Institute of Minerals and Materials Technology (IMMT), Bhubaneswar, Odisha, India
Dept of ECE, Hi-Tech Institute of Technology, Khurda, Odisha, India
This paper describes the design of an ultrasonic transducer using different lead free piezo-electric materials and evaluates their performance with different glucose levels in the human blood. COMSOL Multiphysics 4.2a was used for the simulation study using 2D axis symmetric model of piezoelectric transducer which was designed with lead free piezoelectric materials such as Barium Sodium Niobate ...
B.V.Bhoomaraddi College of Engineerring & Technology, Hubli, Karnataka, India
The world is getting digitalized, demands for new and emerging technologies have reached its peak, and customer demands have taken a U-turn. To cope with such unique requirements many systems and system devices are into the market and one of such enhancing technology is MEMS. MEMS are systems of small size, light weight, enhanced performance and reliability finding widest of applications in ...
S. Sunithamani, P. Lakshmi, E. E. Flora
Department of EEE, College of Engineering, Anna University, Chennai, India
Piezoelectric energy harvester converts mechanical vibrations into electrical energy via piezoelectric effect. The geometry of the piezoelectric cantilever beam greatly affects its vibration energy harvesting ability . In this paper a MEMS based energy harvester with a non-traditional geometry is designed. The design of the energy harvester consists of a rectangular cantilever structure with ...
Modelling and Simulation of Single Phase Fluid Flow and Heat Transfer in Packed Beds using COMSOL Multiphysics
S. Sachdev, S. Pareek, B. Mahadevan, A. Deshpande
Department of Chemical Engineering, BITS Pilani Goa Campus, Zuarinagar, Goa, India
Computational fluid dynamics has emerged as an advanced tool for studying detailed behavior of fluid flow and heat transfer characteristics in many chemical engineering applications like packed beds. Packed beds play an important role in various chemical industries. Hence understanding the fluid flow behavior and temperature variation in different sections of packed bed is essential. Geometric ...
VLSI Layout Based Design Optimization of a Piezoresistive MEMS Pressure Sensors using COMSOL Multiphysics
R. Komaragiri, Sarath. S., N. Kattabomman
NIT Calicut, Kozhikode, Kerala
This paper focuses on the diaphragm design and optimization of a piezoresistive Micro Electro Mechanical System (MEMS) pressure sensor by considering Very Large Scale Integration (VLSI) layout schemes. The aim of these studies is to find an optimal diaphragm shape by Finite Element Method (FEM) using COMSOL®, which is most suitable for VLSI layout. Optimal diaphragm shape is a diaphragm shape ...
L. Nayana, P. Manohar, S. Babu
Department of Electrical Engineering, Visvesvaraya Technological University, Bangalore, Karnataka, India
In this paper some discrete parts of a valveless piezoelectric micropump for drug delivery system is designed and simulated. The core components of the micropump are actuator unit that converts the reciprocating movement of a diaphragm actuated by a piezoelectric actuator into a pumping effect and Nozzle/diffuser elements that are used to direct the flow from inlet to outlet. Simulations are ...
S. Sahu, R. P .Bhattachryay, E. R. Kumar
Institute for Plasma Research, Bhat, Gandhinagar, Gujarat, India.
There is limited option for non-intrusive flow measurement of liquid metals at high temperature. Liquid metal flowing in a conduit along with the transverse magnetic field induces emf in the liquid metal. The emf developed; which has linear dependency on flow velocity; can be used for flow velocity estimation. In case of conducting conduit the emf can be measured at the conduit wall. The main ...
N. R. Mahajan, S. B. Patel, Z. A. Khan
Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Hyderabad, Andhra Pradesh, India
Railgun is an electrically-powered gun that accelerates a conductive projectile along magnetic metal rails. Various factors increase the projectile velocity. Each method has its own advantages and disadvantages. While increasing the projectile velocity, one has to keep in mind the longevity of the rail guns for practical use . Railguns are often damaged after few uses due to the extreme working ...
Jawahar Engineering College, Affliated to Anna University, Chennai, Tamil Nadu, India
Microgrippers are typical MEMS devices used to pick, hold and transport micro-objects. Microgrippers are widely used in the field of micro-assembly, micro-surgery and manipulation of micro-particles. Thermal microgrippers are widely used for large displacement, high accuracy and repeatability. In this paper, a hybrid design electrothermal microgripper (Figure 1), based on Poly Methyl ...
Theoretical Calculation and Analysis Modelling for the Effective Thermal Conductivity of Lithium Metatitanate Pebble Bed
M. Panchal, A. Shrivastava, P. Chaudhuri, E. Rajendrakumar
Institute For Plasma Research, Gandhinagar, Gujarat, India
ITER is a joint international research and development project that aims to demonstrate the scientific and technical feasibility of fusion power. A main function of ITER is to test the tritium producing TBM (Test Blanket Module). In IN-LLCB (Lead Lithium Cooled Ceramic Breeder) TBM lithium matatitanate (Li2TiO3) has been selected as tritium breeder material in form of pebbles. The effective ...