A general model for the near-field optical intensity induced by a conductive tip under polarized laser irradiation is developed for the laser-assisted SPM. The calculations show that a 3:1 silver SPM tip can induce an optical field enhancement of 525 times on a gold substrate surface. Field enhancement and intensity profiles strongly depend on the tip-sample geometry, laser parameters and the dielectric properties of the tip and sample. The temperature rise was analyzed for the cases with and without tip-surface contact. Thermal expansion of the tip is calculated and compared with the tip-sample distance of an SPM junction to determine whether contact between the tip and sample surface occurred.


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    Titel :

    Nanolithography by enhanced laser irradiation


    Beteiligte:
    Lu, Y.F. (Autor:in)


    Erscheinungsdatum :

    2003-01-01


    Format / Umfang :

    154514 byte



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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