Author： Kolesnikov Anton
Publisher： Springer Publishing Company
ISSN： 1071-2836
Source： Journal of Russian Laser Research, Vol.31, Iss.6, 2010-11, pp. : 599-607
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Abstract
We consider apertureless near-field optics that provides subwavelength resolution. We study the enhancement of the electromagnetic field near nanospheres and under the tip of a scanning probe microscope using the finite difference time-domain (FDTD) method. We discuss the mechanisms of field enhancement connected with the system geometry (“lightning rod effect”) and resonance excitation of local plasmon eigenmodes for different materials of the tip and various geometrical parameters of the system. We describe the possible applications in nano-optics and nanotechnology. We present the experimental achievements in apertureless near-field nanolithography.
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