Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

COMSOL Multiphysics® Software as a Metasurfaces Design Tool for Plasmonic-Based Flat Lenses

B. Adomanis [1], D. B. Burckel [2], M. Marciniak [1],
[1] Air Force Institute of Technology, Wright-Patterson AFB, OH, USA
[2] Sandia National Laboratories, Albuquerque, NM, USA

Introduction: Flat lenses require precise control of a phase gradient across an interface, which is enabled through the application of engineered surfaces, such as Metasurfaces [1]. Periodic arrays of plasmonic antennas have been utilized to generate this desired phase gradient, which dictates the angle of “anomalous” refraction of the cross-polarized field scattered from a normal-incidence ...

Simulation of Vector Mode Grating Coupler Interfaces for Integrated Optics

C. T. Nadovich [1],
[1] Lafayette College, Easton, PA, USA

The use of grating couplers to couple conventionally phased and polarized light near vertically in and out of optical slab or film waveguides [1] represents an attractive method to interface optical fiber to photonic ICs. Previously developed grating coupler designs use transversely uniform grating structures matched to conventional scalar fiber modes. The performance of these geometries can be ...

Optical and Electrical Modeling of Three Dimensional Dye Sensitized Solar Cells

P. Guo[1]
[1]Northwestern University, Evanston, IL, USA

Dye sensitized solar cells (DSSCs) have received tremendous attention as alternative photon harvesting devices. While the sintered TiO2 nanoparticle network attached with dye molecules achieves efficient photon absorption, the electrons have to diffuse through the long TiO2 network to reach the contact, resulting in a high electron density and thus increased recombination. Extensive research ...

Characterization of a 3D Photonic Crystal Structure Using Port and S-Parameter Analysis

M. Dong[1], M. Tomes[1], M. Eichenfield[2], M. Jarrahi[1], T. Carmon[1]
[1]University of Michigan, Ann Arbor, MI, USA
[2]Sandia National Laboratories, Albuquerque, NM, USA

We present a 3D port sweep method in a lossy silicon photonic crystal resonator to demonstrate the capabilities of COMSOL Multiphysics® for frequency domain analysis with input and output ports. This method benefits from the advantages of the S-parameter analysis to characterize the input and output coupling into the resonator. By pumping one end of the cavity with a CW plane wave, we are able ...

Modeling of Laser Processing For Advanced Silicon Solar Cells

G. Poulain[1], D. Blanc[1], A. Kaminski[1], B. Semmache[2], and M. Lemiti[1]
[1]Université de Lyon: Institut des Nanotechnologies de Lyon INL, CNRS, INSA de Lyon, Villeurbanne, France
[2]SEMCO Eng., Montpellier Cedex 5 - France

Silicon solar cells still require cost reduction and improved efficiency to become more competitive. New architectures can provide a significant increase in efficiency, but today most of the approaches need additional processing steps. In this context, laser processing offers a unique way to replace technological steps like photolithography that is not compatible with the requirements of the ...

Near-Field FEM Simulations: A Vital Tool for Studying Silver-Based Plasmonic Systems

R. Asapu [1], S. W. Verbruggen [2], N. Claes [3], S. Bals [3], S. Denys [1], S. Lenaerts [1],
[1] Department of Bioscience Engineering, DuEL Research Group, University of Antwerp, Antwerp, Belgium
[2] Department of Bioscience Engineering, DuEL Research Group, University of Antwerp, Antwerp, Belgium; Center for Surface Chemistry and Catalysis, KU Leuven, Leuven, Belgium
[3] Department of Physics, EMAT Research Group, University of Antwerp, Antwerp, Belgium

Silver nanoparticles are valuable in the field of plasmonics since silver has a higher field enhancement factor compared to other metals that possess plasmonic properties. The plasmonic properties of silver nanoparticles can be finely tuned to the incident light wavelength through their size, shape and dielectric environment, and they have long-term stability. In this work, an ultrathin polymer ...

Simulations of nanophotonic waveguides and devices using COMSOL Multiphysics

Z. Zheng
School of Electronic and Information Engineering, Beihang University, Beijing, China

Design and optimization of the nanophotonic devices are critical in realizing advanced photonic integrations in the future. COMSOL can be used for simulating various types of nanophotonic devices involving different materials and dimensions. This report talks about some recent work of Prof. Zheng’s team, including the simulation of dielectric photonic waveguides, optic fibers and surface plasmon ...

Surface Plasmon Resonance Sensors: Optimization of Diffraction Grating and Prism Couplers

W. Raja[1], A. Alabastri[1], S. Tuccio[1], R. Proietti Zaccaria[1]
[1]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 ...

Commercial Special Fibers for Sensing Applications

G. Latha[1], P. Nair[1]
[1]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 ...

Implementation of the Perfectly Matched Layer to Determine the Quality Factor of Axisymmetric Resonators in COMSOL

M.I. Cheema, and A.G. Kirk
McGill University, Montreal, QC, Canada

Due to the inseparability of the wave equation, numerical methods are needed to develop an accurate electromagnetic model for various axisymmetric resonators such as micro-discs and micro-toroids. Our purpose is the implementation of a perfectly matched layer to determine the quality factor of axisymmetric resonators with high accuracy in COMSOL. We treated the perfectly matched layer as an ...