TITLE

Practical limits of absorption enhancement near metal nanoparticles

AUTHOR(S)
Khurgin, J. B.; Sun, G.; Soref, R. A.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/16/2009, Vol. 94 Issue 7, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We consider the enhanced absorption of optical radiation by molecules placed in the vicinity of spherical metal nanoparticles in the realistic situation that includes perturbation of the optical field by the absorbing molecules. We show that there is an optimal nanosphere radius that gives the strongest enhancement for each combination of the number of absorbing molecules, their absorption strength, and their distance from the nanosphere surface and that the enhancement is strong only for relatively weak and diluted absorbers.
ACCESSION #
36797997

 

Related Articles

  • Transformation of Optical Radiation by Two-Layered Nanoparticles with Metallic Shells. Astafyeva, L.; Ledneva, G. // Journal of Applied Spectroscopy;Nov2014, Vol. 81 Issue 5, p862 

    The transformation of optical radiation by nanoparticles consisting of two-layered nanospheres with silica cores and metallic shells of gold, silver, and platinum is modelled theoretically. The characteristics of the external and internal fields are found to differ significantly depending on the...

  • Computational Materials Theory: Optimizing the Use of the Electromagnetic Spectrum. Pederson, M. R.; Mehl, M. J.; Boyer, L. L. // NRL Review;2007, p221 

    The article focuses on optimizing the use of electromagnetic spectrum and computational material theory. It is stated that the ability to forecast how molecules and materials react to incident radiation has been practiced for long. However, scientists are able to computationally predict how...

  • Interaction of organic luminophore with solid-state silicate matrix and optical radiation. Manekina, Yu. A.; Kuznetsova, R. T. // Russian Physics Journal;Feb2008, Vol. 51 Issue 2, p217 

    The article presents a study about the characteristics of laser dye interaction with the solid-state matrix and optical radiation of different intensities. The authors mention that the absorption and flourescence spectra of Rhodamine in the matrix are switched toward longer wavelengths from R19...

  • Broadband zero-backward and near-zero-forward scattering by metallo-dielectric core-shell nanoparticles. Li, Yan; Wan, Mingjie; Wu, Wenyang; Chen, Zhuo; Zhan, Peng; Wang, Zhenlin // Scientific Reports;8/21/2015, p12491 

    Efficient control of optical radiation at subwavelength scales plays important roles for various applications. Dielectric nanoparticles or dielectric shells with a large refractive index of n ~ 3-4, which are only achievable for limited semiconductors, are involved in most designs so far to...

  • Superperiodic conductance in a molecularly wired double-dot system self-assembled in a nanogap electrode. Noguchi, Yutaka; Terui, Toshifumi; Katayama, Takuya; Matsushita, Michio M.; Sugawara, Tadashi // Journal of Applied Physics;Nov2010, Vol. 108 Issue 9, p094313 

    We examined charge transport properties of two gold nanoparticles (GNPs) in a nanogap transistor with a gap width of ∼10 nm. The GNPs connected to each other and to outer electrodes through a small number of dithiolated terthiophene wire molecules as a tunneling barrier. The transport...

  • Band structure and broadband compensation of absorption by amplification in layered optical metamaterials. Rozanov, N.; Fedorov, S.; Savel'ev, R.; Sukhorukov, A.; Kivshar, Yu. // Journal of Experimental & Theoretical Physics;May2012, Vol. 114 Issue 5, p782 

    The frequency dependence of the gain required to compensate for absorption is determined for a layered structure consisting of alternating absorbing and amplifying layers. It is shown that the fulfillment of the same conditions is required for the existence of a band structure consisting of...

  • Simulating the diffraction grating reflectivity using effective medium theory. Goloborodko, A. A.; Goloborodko, N. S.; Oberemok, Ye. A.; Savenkov, S. N. // Semiconductor Physics, Quantum Electronics & Optoelectronics;2013, Vol. 16 Issue 2, p128 

    The features of optical radiation interaction with surface of gratings are investigated. The diffraction grating is proposed to be used in the effective medium model to test nanostructured surfaces. This object allows obtaining simultaneous visualization of different spatial frequencies and...

  • Mathematical model of precision thermal detector for a comparison standard of unit of mean power of laser radiation. Kovalev, A. A.; Moskalyuk, S. A.; Yankevich, E. B. // Measurement Techniques;Oct2009, Vol. 52 Issue 10, p1033 

    It is proposed that a precision thermal receiver constructed as a trap detector and consisting of “elementary” thermal receivers be used to create a comparison standard for the power of optical radiation, The measurement problem is formulated for an individual...

  • Qualitative model of a plasma photoelectric converter. Gorbunov, N. A.; Flamant, G. // Technical Physics;Jan2009, Vol. 54 Issue 1, p68 

    A converter of focused optical radiation into electric current is considered on the basis of the photovoltaic effect in plasmas. The converter model is based on analysis of asymmetric spatial distributions of charge particle number density and ambipolar potential in the photoplasma produced by...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics