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.
K. Dusarlapudi, B. K. Nashine, D. Bai, and C. S. Babu
KL University, Vaddeswaram, Guntur, Andhra Pradesh, India
E.D&S.S, IGCAR Kalpakkam, India
VIT, Vellore, India
Thermocouples have been used for measurement of temperature ever since the discovery of Seebeck effect. Though the voltage output of a thermocouple is a function of the temperature difference between hot and cold junctions, the response time and the magnitude of voltage depends on the geometry and material of the thermocouple also. This report deals with the study of the mineral-insulted ...
P. K. Podder, D. Mallick, D. P. Samajdar, and A. Bhattacharyya
Institute of Radio Physics and Electronics
University of Calcutta
West Bengal, India
In this paper, we have addressed the issues related to the design and simulation of MEMS based silicon micro-needles for insertion of fluid into the dermis layer and into the subcutaneous fat layer. In addition, a poly-silicon micro-pump based on the principle of electrostatic actuation has been designed and simulated which can be integrated with the proposed micro-needles to control the fluid ...
A. Chakraborty, A. Kundu, S. Chatterjee, and B. Gupta
West Bengal, India
This paper presents a novel design of single-bit RF MEMS phase shifter. The basic novelty introduced for phase shifter design in this case, is by scaling down of the lateral dimensions of the conventional RF MEMS shunt switch by 10 times. The Mechanical and Electromechanical analysis of the designed miniature RF MEMS fixed-fixed beam is performed using COMSOL Multiphysics v.3.5a as an FEM ...
D. Maji, C. P. Ravikumar, and S. Das
School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal, India
Texas Instruments (India) Pvt. Ltd., Bangalore, India
Arterial disease, especially Coronary Artery Disease (CAD) is one of the leading causes of premature morbidity and mortality. During the flow, blood interacts with vessel wall mechanically and chemically which modulates the plaque formation in blood vessel leading to coronary artery diseases. Here we propose to simulate a MEMS based flexible flow sensor based on anemometer principle designed to ...
G. Swetha, G. Pavankumar, and A. Manglik
National Geophysical Research Institute
Andhra Pradesh, India
Mathematical modeling tools are extensively used in Geosciences to delineate the earth structure at various spatial scales as well as to simulate coupled earth processes involving multiphysics concepts. COMSOL, a Multiphysics finite element method based numerical modeling package, can be used to analyze complex systems like earth where various physical parameters are involved and interlinked. ...
R. Singh, and I. Jose
BITS Pilani Goa Campus
Diffuse Optical Tomography (DOT) uses Near Infra-red (NIR) light to monitor physiological changes in internal organs. NIR light being less energetic in nature can be used for continuous monitoring of tumor infected biological tissue, neonatal brain and many such applications where high energy radiation can cause severe damage. The forward problem of DOT, which involves obtaining of the ...
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 ...
Evaluation of Tensile Modulus of Carbon Nanotube Bundle Based Composite with Interface Using Finite Element Method
M. S. Islam, F. O. Riktan, S. C. Chowdhury, M. M. R. Chowdhury, and S. Ahmed
Bangladesh University of Engineering & Technology (BUET)
Carbon Nanotubes (CNTs) have remarkable mechanical, thermal and electrical properties. The properties of CNTs depend on atomic arrangement (how the sheets of graphite are rolled), the diameter and length of the tubes and morphology of nanostructure. In this paper effective elastic properties of CNT based polymer composites are evaluated using a square Representative Volume Element (RVE) in ...
Heat Generation from Dielectric Loss, Internal Heat Generation and Vibration in COMSOL4.2 Multiphysics
T. R. Jeba, B. Vins, and V. Ramamoorthy
This paper presents a FEA approach to estimate temperature rise and thermal stress experienced in PZT/Solid structure due to internal heat generation and dynamic excitation. The power dissipative density consumed by structural damping of the mass structure, internal heat generation due to applied voltage and dielectric loss of the PZT material is first determined. The dissipative power is then ...