نتایج جستجو برای: surface plasmon

تعداد نتایج: 640220  

Maryam Fathi Sepahvand Masoud Rezvani,

In this paper, scattering of a plane and monochromatic electromagnetic wave from a nano-wire is simulated using surface integral equations. First, integral equationsgoverning unknown fields on the surface is obtained based on Stratton-Cho surface integral equations. Then, the interaction of the wave with a non-plasmonic as well as a palsmonic nano-wire is considered. It is shown that in scatter...

2013
Siva Charan Devanaboyina Sandra M Lynch Raimund J Ober Sripad Ram Dongyoung Kim Alberto Puig-Canto Shannon Breen Srinath Kasturirangan Susan Fowler Li Peng Helen Zhong Lutz Jermutus Herren Wu Carl Webster E Sally Ward Changshou Gao

2010
Rahber Thariani Paul Yager

Surface plasmon resonance imaging and surface plasmon induced fluorescent are sensitive tools for surface analysis. However, existing instruments in this area have provided limited capability for concurrent detection, and may be large and expensive. We demonstrate a highly cost-effective system capable of concurrent surface plasmon resonance microscopy (SPRM) and surface plasmon resonance-enhan...

رشیدی هویه, مجید, رضایی, نجمه,

Surface plasmon resonance sensors have been widely considered due to their sensitivity, accuracy and response speed. In order to stimulate surface plasmons, a crisman structure is used in which the metal layer (mainly gold or silver) is placed on the surface of the prism. Due to temperature changes, various factors such as optical properties of the metal, the prism and the surrounding environme...

Journal: :international journal of optics and photonics 0
jalil jafari no. 444, prof. yousef sobouti blvd. p. o. box 45195-1159 zanjan iran rahman nouroozi no. 444, prof. yousef sobouti blvd. p. o. box 45195-1159 zanjan iran

for a fiber optical surface plasmon resonance (spr) sensor a short part of its cladding should be removed to coat a thin layer of a metal. usually this is problematic when an optical fiber with small core diameter is used. in this paper, a new method using µliter droplet of the hf acid for short fiber optical taper fabrication is reported. using this method in a multi-mode optical fiber with th...

Journal: :iranian chemical communication 0
professor mohammad ali karimi department of chemistry, payame noor university, p.o. box 19395-4697, tehran, iran malihe alsadat mozaheb department of chemistry, payame noor university, p.o. box 19395-4697, tehran, iran abdolhamid hatefi-mehrjardi department of chemistry, payame noor university, p.o. box 19395-4697, tehran, iran hossein tavallali department of chemistry, payame noor university, p.o. box 19395-4697, tehran, iran abdol mohammad attaran department of chemistry, payame noor university, p.o. box 19395-4697, tehran, iran

in this paper, multivariate calibration methods of partial least squares (pls) and principle component regression (pcr) were investigated in simultaneously determination of hydrazine (hz) and acetylhydrazine (ahz). the aforementioned methods are based on formation of the silver nanoparticles (agnps) from the reaction of hz and ahz with ag+ ions as oxidizing agent in the presence of citrate ions...

Journal: :journal of nanostructures 2013
v. fallahi a. khaledi-nasab

in this paper, the interaction between an oscillating dipole moment and a silver nanoparticle has been studied. our calculations are based on mie scattering theory and discrete dipole approximation(dda) method.at first, the resonance frequency due to excitingthe localized surface plasmons has been obtained using mie scattering theory and then by exciting a dipole moment in theclose proximity of...

Journal: :iranian journal of medical physics 0
mohammad etrati khosroshahi laser and nano-biophotonics lab., biomaterial group, faculty of biomedical engineering, amirkabir university of technology, tehran, iran. laser, optics and photonics research center, tehran, iran.

introduction in this study, we describe the results of controlled synthesis and application of gold coated fe3o4/sio2 nano-shells combined with the optical property of gold for enhancement of selective photothermal interaction with cancerous cells based on the surface plasmon resonance (spr) phenomena. materials and methods magnetite nano-particles (mnps) were prepared by means of co-precipitat...

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