K. Ehrhold, S. Christiansen[1,2], and U. Gösele
Max Planck Institute of Microstructure Physics, Halle, Germany,
Institute of Photonic Technology, Jena, Germany
Plasmonics is a new branch of the fascinating field of photonics and develops concepts to quench light beyond the diffraction limit and enhance electromagnetic fields. These enhancements occur in metals as localized surface plasmon polaritons (LSP) a coupling of the surface density oscillations of the electron gas to the incident light. With threedimensional nano-structures of coinage metals ...
J.T. Andrews, R.R. Kumar, and P.K. Sen
Department of Applied Physics, S G S Institute Technology & Science, Indore, Maharashtra, India
We report the results of simulation showing light coupling in waveguides through prism coupling method. Prism coupling method of light coupling in waveguides is a dominant method adopted by photonic device fabricators. It is necessary to understand the effect various parameters on light coupling in such processes. We used industry standard PDE solver COMSOL Multiphysics to study and analyze the ...
S. M. Ali, A. K. Jha, S. Mahapatra, M. Panigrahi
Trident Academy of Technology, Bhubaneswar, Odisha, India
Nearly seven lakh Indians die of cancer, while over 10 lakh are newly diagnosed with some form of the disease every year. Surgical resection is not always feasible in patients with hepatocellular carcinoma. Microwave Coagulation Therapy (MCT) has been used as an alternative to resection and its efficiency has been evaluated in tissue microwave irradiation from a dipole antenna causes water ...
Analysis of a Planar Inverted-F Mobile Handset Antenna with Reduced Radiation Towards the Human Head
Cochin University of Science and Technology, Cochin, Kerala, India
This paper deals with the simulation and analysis of SAR and temperature distribution induced by a Planar Inverted-F Antenna on human head model using COMSOL Multiphysics® software. The goal of this paper is to compare the SAR and temperature distributions of omni-directional PIFA with that of a PIFA with reduced radiation towards human head. The two antennas are designed to operate at 900 MHz ...
H. V. Dixit , A. R. Jadhav , Y. M. Jain , A. N. Cheeran , V. Gupta , P. K. Sharma ,
 Veermata Jijabai Technological Institute, Mumbai, Maharashtra, India
 Vidyavardhini's College of Engineering and Technology, Vasai, Maharashtra, India
 Institute for Plasma Research, Gandhinagar, Gujarat, India
The modelling of a ferrite material is conventionally carried out using the Polder permeability tensor which assumes that the ferrite is saturated by a uniform magnetic field. This assumption is often inaccurate due to the constraints imposed by boundary conditions which renders the magnetic field non-uniform. This work proposes to overcome this by determining the magnetic field through a ...
J.C. Crompton, K.C. Koppenhoefer, and S.Y. Yushanov
AltaSim Technologies, LLC, Columbus, Ohio, USA
This paper presents the solution of a transient electromagnetic problem using COMSOL Multiphysics. The paper also presents a closed-form solution of a transient electromagnetic dipole. The computational solution compares well with a closed-form solution for this problem. This work implements Maxwell’s equations in the RF module and optimizes solver parameter settings to resolve the transient ...
Hyperbolic Heat Transfer Equation for Radiofrequency Heating: Comparison between Analytical and COMSOL Solutions
V. Romero-García, M. Trujillo, M.J. Rivera, J.A. López Molina, and E.J. Berjano
Centro de Tecnologías Físicas Acústica, Universidad Politécnica de Valencia, Valencia, Spain
Dpto. Matemática Aplicada, Instituto Universitario de Matemática Pura y Aplicada, Universidad Politécnica de Valencia, Valencia, Spain
Institute for Research and Innovation on Bioengineering, Universidad Politécnica de Valencia, Valencia, Spain
The Radiofrequency Heating (RFH) is widely employed to heat biological tissue in different surgical procedures. Most models analyze the RFH employing a Parabolic Heat Transfer Equation (PHTE) based on Fourier's theory. The PHTE can be used for problems involving long heating times or low thermal gradients. However, when the problem involves short heating times or extreme thermal gradients it is ...
H.K. Yang, S.C. Tseng
Institute of Mechanical Engineering, National Yunlin University of Science Technology, Taiwan
In order to perform rust surface treatment for stainless wires, we proposed an electrolyzing equipment to do so. It has the following advantages: safer, cheaper and less environmental pollution. To study the performance of the electrolyzing process, numerical simulation for electric fields will be conducted by using COMSOL Multiphysics software. Taguchi methods was also used to obtain better ...
Institute of Physics CAS
Chiral SPPs can be generated by linearly polarized light incident at the end of a nanowire, exciting a coherent superposition of three specific nanowire waveguide modes. Chirality is preserved in the emitted photons, creating a subwavelength ¼ wave plate.
Z. Brito-Brito, J. E. Rayas-Sánchez, J. C. Cervantes-González, C. A. López
The Jesuit University of Guadalajara. Dept. of Electronics, Systems and Informatics, Jalisco, México
Intel Guadalajara Design Center, Jalisco, México
The EM optimization of a coarsely discretized model of a microstrip band-pass filter implemented in COMSOL Multiphysics® was realized using two different model configurations. We presented a systematic methodology to find an appropriate 3D EM model configuration on a direct EM optimization of a low fidelity models. It was confirmed that the direct EM optimization of coarse models in COMSOL could ...