H. Arab, S. Memiaghe, C. Akyel
Ecole Polytechnique of Montreal, Montreal, QC, Canada
This paper deals with a numerical modelling technique based on finite elements method for computing magnetic field and current density distributions in high temperature Superconducting (HTS) tapes. The model is developed using the T-ῼ formulation for which the degree of freedom (DOF) and the CPU time decreased considerably in AC losses analysis, and it is also observe that T-ῼ formulation give ...
A. Krishnamurthy, G. Chen, B. Ulmen, D. Ahern, G. Miley
University of Illinois at Urbana - Champaign, Urbana, IL, USA
The Helicon-Injected Inertial Plasma Electrostatic Rocket (HIIPER) is a two-stage electric propulsion system comprising of a helicon plasma source and an inertial electrostatic confinement (IEC) device for plasma production and acceleration, respectively. Several diagnostics such as a Faraday cup, spherical Langmuir probe, and gridded energy analyzer have been developed for analyzing various ...
University of South Florida, Tampa, FL, USA
A two-dimensional atrial tissue model has been constructed in COMSOL Multiphysics® software to study the propagation of action potential and electrograms. The model presents the atrial electrograms recorded with a mapping catheter. A 2D atrial tissue model is simulated using the Courtemanche et al. cell model equations. PDE in coefficient form was used in COMSOL Multiphysics® to reproduce the ...
S. Aissani, L. Guendouz
CRM2, Institut Jean Barriol, University of Lorraine, Vandoeuvre-lès-Nancy, France
Mesures et architectures électroniques, University of Lorraine, Vandoeuvre-lès-Nancy, France
Nuclear Quadrupole Resonance (RQN) is a radio frequency (RF) spectroscopic technique that is used to detect quadrupole nuclei such as Nitrogen-14. NQR was found to be a good candidate for detecting narcotics, explosives and medicines . However, due to its low sensitivity the use of NQR is still limited. One way to increase the sensitivity is to improve the RF coil by means of a better RF ...
M. Vijayalakshmi, R. C. Thiagarajan
ATOA Scientific Technologies Pvt. Ltd., Bengaluru, Karnataka, India
Conventional cardiac electrical signal monitoring and measurement techniques such as Electrocardiograph (ECG) are prone to operator error due to multiple lead attachment requirements. These multiple electrode based systems are also not convenient for continuous cardiac health monitoring, though ECG is the best way to measure and diagnose abnormal rhythms of the heart. In this paper, a smart ...
R. A. Gerhardt , Y. Jin ,
 Georgia Institute of Technology, Atlanta, GA, USA
1. Introduction Polycrystalline single phase materials often display electrical properties that are a function of their grain size. Impedance spectroscopy, an alternating current technique is ideal for detecting the presence of more than one current path and has been used for many years[1,2]. However, it is proposed here that it may be possible to use concepts developed for two phase ...
T. S. Jones , C. R. Pérez , J. J. Santiago-Avilés ,
 University of Pennsylvania, Philadelphia, PA, USA
Microwave impedance microscopy (MIM) is a novel mode of atomic force microscopy that can measure topography and local electrical impedance simultaneously and with nanometer spatial resolution . This technique is typically used qualitatively, identifying defects in nanodevices or imaging ferroelectric domain walls, for example. However, the technique also has the potential to be used in a more ...
Anna Thomas, Juny Thomas, Deepika Vijayan, K.Govardhan
VIT University, Sensor System Technology, School of Electronics Engineering, Vellore, Tamil Nadu, India
VIT University, MEMS & Sensor Division, School of Electronics Engineering, Vellore, Tamil Nadu, India
The microscopic size of MEMS devices accounts for strong coupling effects which arise between the different physical fields and forces. Micromirrors are essential parts of microswitches in fiber optic network telecommunication. They are usually 1 to 3 mm in size, fabricated from single crystalline silicon and mostly are electrostatically actuated. The objective is to design the micromirror to ...
ABB AG, Ladenburg, Germany
Single coil actuators are representing one important component of ABB’s medium voltage reclosers. Their performance is strongly influenced by the considered material properties as well as by the electronic control units’ properties that will power the actuator. Therefore, this paper focuses on electromagnetic actuators modeling and simulation in COMSOL Multiphysics®.
Self-Consistent Modeling of Thin Conducting Wires and Their Interaction with the Surrounding Electromagnetic Field
ABB AB, Corporate Research, Västerås, Sweden
It is demonstrated how the RF Module of COMSOL Multiphysics® can be used to approximately model thin conducting wires or cables and how they interact with a surrounding electromagnetic field. Despite being non-stringent the method can reasonably well predict currents induced by an applied electromagnetic field in wires, and networks of wires, as well as fields radiated from current-carrying ...