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Scanning. 2004 Sep-Oct;26(5 Suppl 1):I94-7.

Evanescent signal detection and enhanced resolution with random silver nanoparticles.

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1
Department of Physics, National Taiwan Normal University, Taipei, Taiwan. wcliu@phy.ntnu.edu.tw

Abstract

Inspired by the subwavelength resolution capability of the super-resolution near-field structure, a simplified optical structure was proposed to investigate the complicated near-field optical interactions between random silver nanoparticles and evanescent waves from a zeroth-order grating. The simplified structure consisted of a glass thin film embedded with random silver nanoparticles on a zeroth-order glass grating. The near-field and far-field optical properties of this structure were investigated by the finite-difference time-domain (FDTD) numerical simulations and the optical resolution beyond diffraction limit was demonstrated.

PMID:
15540822
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