H. Lee, and J.V. Clark
Purdue University, West Lafayette, IN, USA
In this paper we present a method to mitigate the effect of thermally-induced noise in Micro-Electro-Mechanical Systems (MEMS) through a force feedback circuit. Inherent noise-induced vibrations, which would be inconsiderable in macro scale, are considered as a limitation in micro- and nano- scale since it diminishes the high performance of MEMS devices. For instance, depending on the stiffness ...
The 3D Mixed-Dimensional Quench Model of a High Aspect Ratio High Temperature Superconducting Coated Conductor Tape
W.K. Chan[1,2], J. Schwartz, P. Masson, and C. Luongo
FAMU-FSU College of Engineering, Tallahassee, FL, USA
North Carolina State University, Raleigh, NC, USA
Advanced Magnet Lab, Palm Bay, FL, USA
ITER Organization/Magnet Division, Saint Paul-lez-Durance, France
A successful development of an effective quench detection and protection method for a high temperature superconducting (HTS) coil based on a HTS coated conductor tape lays on a thorough understanding of its slowly propagating, three-dimension (3D) quench behavior. Toward this goal, a 3D micrometer scale finite element (FE) thermo-magnetostatic HTS tape model is developed and implemented in ...
V. S. Selvakumar, M. S. Gowtham, M. Saravanan, S. Suganthi, and L. Sujatha
Rajalakshmi Engineering College
Micro-tweezers have been widely investigated because of their extensive applications in micro-fluidics technology, microsurgery and tissue-engineering. It has been reported that thermal actuation provides greater forces and easier control when compared to electrostatic micro actuation. In this paper, we discuss about the effects of Alumina as gripper on the operation of micro tweezers. The ...
A. V. Lakshmi, K. C. Devi
PSG College of Technology, Coimbatore, Tamil Nadu, India
This paper presents the design and simulation of a thermal sensor using COMSOL Multiphysics® software for the detection of low body temperature syndrome which can allow the early detection of cancer. This sensor is made of an alloy consisting of two materials with different coefficients of thermal expansion. The main objective of this work is to investigate the structural change in the sensor ...
B. A. Marmo , M. P. Snaith ,
 Xi Engineering Consultants, Edinburgh, United Kingdom
An electrostatic headphone includes many interrelated design elements that affect the frequency response of the headphone and the users listening experience. Xi Engineering Consultants (XI) partnered with Warwick Audio Technologies (WAT) to investigate the complex behavior of one-side electrostatic speakers. Xi developed a GUI that helped WAT engineers optimize their speaker using virtual tools ...
S. Park, S. Chung, and J. Yeow
University of Waterloo, Systems Design Engineering, Waterloo, Ontario, Canada
A micromirror or a torsional actuator in general has been proven to be one of the most popular actuators fabricated by Micro-Electro-Mechanical System (MEMS) technology in many industrial and biomedical applications such as RF switches, a laser scanning display, an optical switch matrix, and biomedical image systems. In this paper, two stacked micromirrors are presented and analyzed to show ...
S. Rabbani, P.K. Rathore, G. Ghosh, and B.S. Panwar
Indian Institute of Technology Delhi, New Delhi, India
In this paper, a piezoelectric cantilever is investigated using finite element analysis made possible by COMSOL Multiphysics for the generation of electrical energy. A micro power generator was designed to convert mechanical vibrations present in the environment to electrical power. The model was studied for different cantilever dimensions. The load resistor was optimized for obtaining maximum ...
N. Osonwanne, and J.V. Clark
Purdue University, West Lafayette, IN, USA
In this paper we present a method to reduce the comb drive gap in micro electro mechanical systems (MEMS) beyond the minimum fabrication feature size. The benefit of reducing the gap space between comb drive fingers is to increase its sensitivity to changes in capacitance due to displacements. The minimum feature size of standard fabrication foundries is 2 microns. To reduce the gap beyond a ...
H. T. D. Grigg, and B. J. Gallacher
Newcastle upon Tyne
Tyne and Wear, UK
This paper presents ongoing research aimed at development of a MEMS magnetometer capable of nanoTesla sensitivity. Such a device would pave the way for inertial-grade MEMS IMUs. A resonant sensor is proposed, based on a Xylophone Bar sense element, and is analysed both directly and via COMSOL. Mode shapes and frequencies are found as functions of geometric parameters, and the results used ...
K. Karthikeyan , L. Sujatha
Rajalakshmi Engineering College, Chennai, Tamil Nadu, India
This paper presents the design and simulation of micromixer for Lab-On-Chip (LOC) applications. There are two types of micromixers: one is an active micromixer and another one is a passive micromixer. This paper investigates microfluidic flow characterization and mixing rate of two fluids in a micro- channel. Understanding the microfluidic flow at the micro channel is a develop methods of mixing ...