The field lines of Poynting vector around a small particle are investigated on the basis of classical Mie theory [G. Mie, (1908)]. A particle can effectively absorb incident energy from its surrounding regions, resulting in a great increasing in its optical absorption cross-section, which could be much greater than its geometrical cross-section. In general, the absorbed energy flows into the particle through some limited portion of its surface instead of the whole surface. For small /spl epsiv/" particle, the excited particle would release energy by dipole radiation but this radiation is confined in a small region near to the particle. Our simulation also reveals the generation of the "optical vortex" around the particle, as that could be used for a new principle of magnetic storage.


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    Title :

    Local field of Poynting vector around a small particle


    Contributors:
    Wang, Z.B. (author) / Luk'yanchuk, B.S. (author) / Hong, M.H. (author) / Lin, Y. (author) / Chong, T.C. (author)


    Publication date :

    2003-01-01


    Size :

    74396 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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