Buch, Zubair and Kumar, Vineet and Mamgain, Hitesh and Chawla, Santa (2013) Silver Nanoprisms Acting as Multipolar Nanoantennas under a Low-Intensity Infrared Optical Field Exciting Fluorescence from Eu3. Journal of Physical Chemistry Letters, 4 (22). pp. 3834-3838. ISSN 1948-7185

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A silver nanoprism (Ag NP) generates a near field due to multipolar surface plasmon resonance (SPR) and lightening rod effects and acts as a multipolar nanoantenna. The ability of Ag NPs to create such an effect even under an infrared (IR) optical field far off of resonance from the SPR frequency is demonstrated through finite difference time domain simulations of exact Ag NPs and hybrids. The conclusive experimental proof of such a near field around Ag NPs under low-intensity (1.5 mW) IR (980 nm) light came when it could excite fluorescence from YVO4/Eu3+ nanoparticles that otherwise do not fluoresce under IR. The results open up new vistas for exclusive plasmonic excitation of fluorescence through metal NP hybrids/ensembles.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s American Chemical Society.
Subjects: Materials Science
Physics > Atomic and Molecular Physics
Nanoscience/ Nanotechnology
Physical Chemistry/Chemical Physics
Depositing User: Users 27 not found.
Date Deposited: 11 Jun 2020 11:05
Last Modified: 11 Jun 2020 11:05
URI: http://npl.csircentral.net/id/eprint/3061

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