J. T. Fong , N. A. Heckert , J. J. Filliben , P. V. Marcal , R. Rainsberger 
 National Institute of Standards and Technology, Gaithersburg, MD, USA
 MPACT Corp., Oak Park, CA, USA
 XYZ Scientific Applications, Inc., Livermore, CA, USA
Uncertainty in COMSOL Multiphysics® software simulations due to (a) model parameter uncertainties and (b) mesh-induced truncation errors, is estimated using a design-of-experiments approach [1, 2, 3], and a nonlinear least squares logistics fit method [4, 5], respectively. Examples to illustrate both approaches are given using the COMSOL RF Module (in an application of a MRI coil design) and ...
Prediction and Optimization of Surface-Enhanced Raman Scattering Geometries using COMSOL Multiphysics
I. Knorr, K. Christou, J. Meinertz, A. Selle, J. Ihlemann, and G. Marowsky
Laser-Laboratorium Göttingen e.V., Germany
Raman spectroscopy is a commonly used tool in biodiagnostics and sensor technology. Surface-enhanced Raman scattering provides high signal enhancements especially at nanostructured metallic surfaces. In this paper the electromagnetic Raman enhancement from different metallic nanostructures - including gold coated gratings, spherical and hemispherical particles - is calculated by using the finite ...
G. Latha, P. Nair
SSN College of Engineering, Chennai, Tamil Nadu, India
In a solid core PCF, structural parameters and the number of rings in the cladding region decide confinement losses, dispersion coefficients as well as bending losses. This paper evaluates some of commercially available solid core photonic crystal fibers. The dispersion coefficients and sensitivity of these fibers are estimated using COMSOL Multiphysics®, and compared with the theoretical values ...
A Design-of-Experiments Approach to FEM Uncertainty Analysis for Optimizing Magnetic Resonance Imaging RF Coil Design - new
J. T. Fong, N. A. Heckert, J. J. Filliben, L. Ma, K. F. Stupic, K. E. Keenan, S. E. Russek
National Institute of Standards & Technology, Gaithersburg, MD, USA
National Institute of Standards & Technology, Boulder, CO, USA
The design of a magnetic resonance imaging (MRI) RF coil using finite element method-based analysis is an essential part of a multi-year research project at the National Institute of Standards and Technology, Gaithersburg, Maryland, where the goal of the project is to develop a “phantom” for calibrating MRI machines that is traceable to standardized values. Traceable MRI calibrations are ...
V. S. Wildner, M. G. Vanti
Regional University of Blumenau - FURB, Blumenau, SC, Brazil
Devices of mobile communication require smallest sizes of antennas. This is one of the applications of fractal antennas which have reduced size or are multiband and can be used for mobile phone, RFID, Wi-Fi, digital TV, among other applications. The Koch fractal geometry allows better space filling, then it is possible to build antennas electrically longer than linear antennas that have the ...
N. Gurler, Y. Ziya Ider
Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey
Designing a Radio Frequency (RF) birdcage coil used in Magnetic Resonance Imaging (MRI) at high frequencies where the wavelength is comparable with the coil dimensions is a challenging task. Before construction of the coil, not only calculating the capacitance value which is necessary for the coil to resonate at the desired frequency but also geometrically modeling the coil in a 3D simulation ...
S. Curet , F. Bellicanta Begnini , O. Rouaud , L. Boillereaux 
 L’UNAM Université, ONIRIS, CNRS, GEPEA, Nantes, France
The use of microwaves for heating purposes of dielectric materials is encountered in many industrial applications (food processing, chemistry, material engineering and medical applications). In most of these thermal applications, the prediction of the temperature evolution within the processed materials is of primary interest in order to optimize the treatment (Chandrasekaran et al., 2013). In ...
S. Kumari, S. Raghavan
National Institute of Technology Tiruchirappalli, Tiruchirappalli, Tamil Nadu, India
Microwave technology has provided with many exciting new therapeutic and diagnostic methods. Frequencies from RF as low as 400 kHz through microwave frequencies as high as 10 GHz are presently used for therapeutic applications in areas such as cardiology, urology, surgery, ophthalmology, cancer therapy and for diagnostic applications in areas such as cancer detection, organ imaging and more. At ...
A.H. Hegab, J.P. Kaerst
HAWK, University of Applied Sciences and Arts, Goettingen, Germany
Rotor blades for wind turbines are made of GFRP material. They have to be designed to withstand wind and weather over their approximately 20 years of lifetime. The ability to monitor the mechanical stress is crucial in order to reduce maintenance costs and to maximize operational availability. This paper presents the combination of SPICE® and COMSOL Multiphysics®, in order to reduce ...
W. Raja, A. Alabastri, S. Tuccio, R. Proietti Zaccaria
Department of Nanostructures, Istituto Italiano di Tecnologia, Genova, Italy
Surface plasmon resonance (SPR) sensors proved themselves as a promising device for many kinds of applications such as optical biosensing, binding constant determinationor nanofilm thickness measurements. Here we simulate using COMSOL Multiphysics® the light-polaritons coupling for the two most commonly used SPR setups: Attenuated total reflection (Kretschmann configuration) and diffraction ...