When frequency of incident light with transverse magnetic (TM) polarization is equal to oscillations of surface plasmon of a plasmonic material the surface plasmon resonant can be occurred. In this paper by using surface integral equations method, the scattering of electric field around of a gold nanowire with elliptical cross section under the incident light with 0, 45 and 90 degree of light illumination angles have been investigated. By calculating the average of magnitude of electric in inside and around of nanowire, the frequency that maximizes field's average, reported as resonant frequency of nanowire.

Keywords: Surface Plasmon Resonance, Nanowire, Light Scattering, Surface Integral Equation Method

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