Au Nanoparticle-based Plasmonic Enhancement of Photocurrent in Gallium Nitride Metal-Semiconductor-Metal (MSM) Ultraviolet Photodetectors
Arjun Shetty, K J Vinoy, S B Krupanidhi
Electrical Communication Engineering, Indian Institute of Science, Bangalore, India
Materials Research Centre, Indian Institute of Science, Bangalore, India
III-nitride semiconductors and gallium nitride in particular have recently become increasingly important for optoelectronic applications like LEDs, solar cells and photodetectors due to their attractive properties like wide and direct bandgap, high power handling capability and high breakdown field. Nanoplasmonic enhancement of photodetectors by scattering effects has been well known and is ...
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 that ...
S. Leszczynski, B. Leszczynska, M. Albert, J.W. Bartha, U. Stephan, J. Kuske
Dresden University of Technology, Semiconductor and Microsystems Technology Laboratory, Dresden, Germany
Forschungs- und Applikationslabor Plasmatechnik GmbH, Dresden, Germany
The plasma enhanced chemical vapor deposition process with a linear plasma source and the frequency range up to 140 MHz developed by Dresden University of Technology and FAP GmbH Dresden enables a fabrication of thin film silicon layers at very high deposition rates. However, an increase of the plasma frequency reduces the electromagnetic wavelength. Therefore, the electric field distribution is ...
V. Kivijärvi, M. Erdmanis, I. Tittonen
Aalto University, Department of Micro- and Nanosciences, Espoo, Finland
SOI (Silicon on Insulator) technology utilizes silicon components on SiO2 layer. Propagating electric field distribution in a SOI waveguide is called mode of the waveguide. Photonic gratings are formed by etching grooves on the top of a waveguide. Gratings can operate in two directions. They can guide incident beam into a waveguide or a waveguide mode out of the structure. We study the grating ...
M. Trujillo, E. Berjano
Universidad Politécnica de Valencia, Valencia, Spain
Radiofrequency ablation is a minimally invasive techinique which is used to treat some kinds of cancer. The realism of theoretical models is very important. An influential factor in this realism is mathematical functions that model the temperature-dependence of tissue thermal and electrical conductivities. The aim of this work is to review the mathematical functions employed to model the ...
H. Arab, F. Afshar, C. Akyel
École Polytechnique de Montréal, Montréal, QC, Canada
Department of Electrical and Computer Engineering, McGill University, Montréal, QC, Canada
In this project a two dimensional second order nodal and linear edge elements programming model for homogeneous waveguide is developed and simulated in MATLAB® software Environment. The objective is to reduce or eliminate spurious solutions and to cater for any arbitrarily shaped waveguides using triangular edge elements. The formulation is developed using the E-Field and to make use of the ...
S. M. Musa, and M. N. O. Sadiku
College of Engineering, Prairie View A&M University, Prairie View, TX, USA
This paper presents a numerical analysis for calculating the capacitance of singlestrip and double-strip shielded transmission lines. Modeling and simulation of the capacitance of shielded microstrip lines using COMSOL are illustrated. We determined the capacitance per unit length of each shielded microstrip line.We compared our results with those obtained by other methods and found them to be in ...
D. Fidalgo, J. Monteiro, L. Costa
I3N and Physics Department, University of Aveiro, Aveiro, Portugal
This work presents an alternative method for curing cork stoppers based on microwave radiation, which is energetically more efficient, where it is possible to accelerate the reaction rate and therefore reduce the cure time comparatively with conventional curing methods. The microwave energy is directly introduced in the volume of the dielectric material and as a consequence, the quality of the ...
R. Kumar, P. Singh
Bhabha Atomic Research Center, Trombay, Mumbai, India
High-power couplers working at 350 MHz for particle accelerator cavities are presently under development in the LEHIPA project at BARC. It is important to analyze RF losses on conducting surfaces and resulting thermal profiles. COMSOL Multiphysics® is used to study these coupled RF-thermal effects and estimate cooling requirements for these couplers. The RF loss on the copper conductors and ...
Vaishali Rawat, Sougata Chatterjee, Shantanu Das, S.N.Kale
Defense Institute of Advanced Technology, Pune, India
Giant Metrewave Radio Telescope,Tata Institute of Fundamental Research,Pune, India
Reactor Control Division, B.A.R.C., & Adjunct Faculty, DIAT, Pune, India
Metamaterial [1, 2] is an artificially structured material where it’s electrical (ϵ), magnetic (μ) and its refraction properties (n) are simultaneously negative in narrow frequency band. Currently, metamaterials are being widely used in microwave and radio frequencies as devices [3, 4] like filter, coupler, antenna etc. However, the applicability of metamaterial as High Energy Microwave (HEM) ...