Y.A. Urzhumov[,], N.I. Landy[,], C. Ciraci, D.R. Smith[,]
Department of Electrical and Computer Engineering, Pratt School of Engineering, Duke University, Durham, NC, USA
Center for Metamaterials and Integrated Plasmonics, Pratt School of Engineering, Duke University, Durham, NC, USA
Linear wave propagation through inhomogeneous structures of size R?? (Fig.1) is a computationally challenging problem, in particular when using finite element methods, due to the steep increase of the number of degrees of freedom as a function of R/?. Fortunately, when the geometry of the problem possesses symmetries, one may choose an appropriate basis in which the stiffness matrix of the ...
G.G. Gentili, S. Pietralunga, M. Bolzoni
Politecnico di Milano, Dipartimento di Elettronica e Informazione, Milano, Italy
INFN-CNR, Istituto di Fotonica e Nanotecnologie, Milano, Italy
Grating-assisted optical coupling into long-range modes of strip plasmonic waveguides is analyzed by a 3D numerical simulation with COMSOL Multiphysics. We used the RF Module and its scattering formulation. A comparison with results obtained using the common 2D approximated analysis is shown for the case of 1D grating coupler and input Gaussian beam. Excited diffracted modal field distribution ...
L. Bergamini , O. Muskens , N. Zabala , J. Aizpurua 
 UPV/EHU, Bilbao, Spain; Materials Physics Center and CSIC-UPV/EHU, Donostia-San Sebastian, Spain; Donostia International Physics Center, Donostia-San Sebastian, Spain
 University of Southampton, Southampton, UK
 Materials Physics Center and CSIC-UPV/EHU, Donostia-San Sebastian, Spain; Donostia International Physics Center, Donostia-San Sebastian, Spain
It is well-known that metal nanoparticles (NPs) excited at the plasmon frequency not only exhibit peculiar optical properties (e.g., a peak in the extinction spectrum, an enhanced electromagnetic near-filed) but also heat up . This phenomenon is highly investigated for medical applications, but it can be exploited also for the realization of optical devices. In our study we use COMSOL ...
S. Mishra , S. K. Saxena , P. Yogi , P. R Sagdeo , R. Kumar ,
 Indian Institute of Technology Indore, Indore, Madhya Pradesh, India
In the present work, we have studied the electron transport properties of single silicon nanowire using Semiconductor Module of COMSOLMultiphysics software. We construct a MSM (metal-semiconductor-metal) model where metal is selected as copper and semiconductor is taken as silicon. Silicon is doped with n-type impurity by increasing doping concentration. Further, the Schottky diodes formed at ...
Modeling of a Nonlinear Hybrid Plasmonic Waveguide for Enhanced Surface Plasmon Polaritons Through Optical Parametric Amplification
D. Wang, T. Li, S. Wang, S. Zhu
Nanjing University, Nanjing, Jiangsu, China
Surface Plasmon Polaritions (SPPs), as electromagnetic waves localized at the surface of a metal, enjoy the unique properties to confine energy into sub-wavelength scale, which is beneficial for future photonic integration. However, the severe absorption caused by the metal influences the propagation distance greatly. Actually, SPPs loss can be compensated by optical parametric amplification in ...
R. Penjweini, M. M. Kim, T. C. Zhu
Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA, USA
Introduction: Singlet oxygen (¹O₂) has a critical role in the cell-killing mechanism of photodynamic therapy (PDT). Therefore, in this study, the distance-dependent reacted ¹O₂ is numerically calculated using finite-element method (FEM). Herein, we use a model [Ref. 1] that has been previously developed to incorporate the diffusion equation for the light transport in tissue and the macroscopic ...
Calculating and Observing Opto-Mechanically Induced Surface Acoustic Waves in a Silica Whispering Gallery Microresonator
Photonics Research Center
United States Military Academy
West Point, NY
Here we calculate opto-mechanically induced Surface Acoustic Waves upon a silica microresonator using COMSOL. Using conservation of momentum, we show both analytically and numerically that the photonphonon interaction within the resonator cavity causes a moving train of electrodes - a virtual grating of matter density – that displace material in different directions and magnitudes. This hyper ...
D. Carrier, and J.J. Dubowski
Université de Sherbrooke, Sherbrooke, QC, Canada
In order to provide swift and precise diagnostics, physicians and medical doctors require an adequate amount of information about the patient\'s condition. An integrated SPR (surface plasmon resonance) biosensing platform is currently developed by our research group with the aim of preserving compatibility with microfabrication techniques, open-ended surface and integrated light source. In order ...
A. Coll, V. Di Virgilio, S. Bermejo, and L. Castañer
Universitat Politècnica de Catalunya, Barcelona, Spain
Photonic crystals are widely used in optical applications as waveguides and band filters. Filling the periodic structural material of photonic crystals with other materials is very useful in order to change the optical properties of the devices. In this paper electrostatic COMSOL simulations describing an electrospray deposition of particles in macroporous structures are performed.
Modelling Ultra-short Pulse Laser Ablation of Dielectric Materials Using multiple Rate Equations - new
P. Boerner, K. Wegener
Institute of Machine Tools and Manufacturing, ETH Zurich, Zurich, Switzerland
Ultrafast lasers are widely applied in micromachining, material science and physics. In industry, picosecond lasers are becoming more and more established. For pulse lengths shorter than the electron-phonon coupling time, heat affected zones are negligible. Thermally sensitive materials can be processed using ultrashort pulse laser radiation. Multi-component materials and poorly absorbing ...