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Applied Physics Letters / Volume 100 / Issue 1 / PHOTONICS AND OPTOELECTRONICS

Appl. Phys. Lett. 100, 011101 (2012); http://dx.doi.org/10.1063/1.3673470 (3 pages)

Super-resolution spatial frequency differentiation of nanoscale particles with a vibrating nanograting

Leonid Alekseyev1, Evgenii Narimanov1, and Jacob Khurgin2

1Electrical and Computer Engineering Department, Purdue University, West Lafayette, Indiana 47907, USA
2Electrical and Computer Engineering Department, Johns Hopkins University, Baltimore, Maryland 21218, USA

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(Received 14 July 2011; accepted 14 November 2011; published online 3 January 2012)

We propose a scheme for detecting and differentiating deeply subwavelength particles based on their spatial features. Our approach combines scattering from an ultrasonically modulated nanopatterned grating with heterodyne techniques to enable far-field detection of high spatial frequency Fourier components. Our system is sensitive to spatial features commensurate in size to the patterning scale of the grating. We solve the scattering problem in Born approximation and illustrate the dependence of the signal amplitude at modulation frequency on grating period, which allows to differentiate between model nanoparticles of size λ/20.

© 2012 American Institute of Physics

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KEYWORDS and PACS

Keywords

diffraction gratings, heterodyne detection, light scattering, nanoparticles, nanopatterning, nanophotonics, object detection, optical modulation, ultrasonic applications

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3673470

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    N. C. J. van der Valk and P. C. M. Planken, Appl. Phys. Lett. 81, 1558 (2002)APPLAB000081000009001558000001.

    M. B. Assouar, O. Elmazria, P. Kirsch, P. Alnot, V. Mortet, and C. Tiusan, J. Appl. Phys. 101, 114507 (2007)JAPIAU000101000011114507000001.


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