Field enhancement and gap-dependent resonance in a system of two opposing tip-to-tip Au nanotriangles

Sundaramurthy, Arvind; Crozier, Kenneth B.; Kino, G. S.; Fromm, David P.; Schuck, P. James; Moerner, W. E.

doi:10.1103/physrevb.72.165409

Cited by 259 publications

(209 citation statements)

References 22 publications

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“…3a,c). This behaviour has already been confirmed experimentally for gold nanoantennas that have been fabricated by electron-beam lithography 17 . Tilted sidewalls in the nanotriangles (Fig.…”

supporting

confidence: 54%

Nanomechanical control of an optical antenna

et al. 2008

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supporting

confidence: 54%

Nanomechanical control of an optical antenna

et al. 2008

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“…These properties emerge as a result of the collective oscillation of conduction electrons (plasmons) upon light excitation. [1][2][3][4] The plasmon resonance frequency can be tuned by varying the nanoparticle's size, shape, composition and dielectric surroundings [1][2][3][4][5][6][7][8][9][10][11][12] and a broad range of biological and chemical applications stems from these spectral tuning capabilities. [13][14][15][16][17][18] The dependence of the localized surface plasmon resonance (LSPR) on the refractive index has for example been used in LSPR sensing to monitor molecular binding events.…”

Section: Introductionmentioning

confidence: 99%

Bright and dark plasmon resonances of nanoplasmonic antennas evanescently coupled with a silicon nitride waveguide

et al. 2015

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In this work we investigate numerically and experimentally the resonance wavelength tuning of different nanoplasmonic antennas excited through the evanescent field of a single mode silicon nitride waveguide and study their interaction with this excitation field. Experimental interaction efficiencies up to 19% are reported and it is shown that the waveguide geometry can be tuned in order to optimize this interaction. Apart from the excitation of bright plasmon modes, an efficient coupling between the evanescent field and a dark plasmonic resonance is experimentally demonstrated and theoretically explained as a result of the propagation induced phase delay.

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“…[19][20][21] The nanoantenna ͑also known as an optical antenna͒ system consisting of single or coupled nanoparticles, either isolated or arrayed, is well studied. [5][6][7][8][9][10][11][12][13][14][15][22][23][24][25][26][27][28][29] The system of two closely spaced nanoparticles is of particular interest as the LSPR of individual particles couple, resulting in greater electric field enhancement [24][25][26] and a systematic red shift compared to a single particle. [22][23][24]28 Field enhancements afforded by LSPRs result in enhanced emission of dyes and QDs in the vicinity of the nanoparticles.…”

mentioning

confidence: 99%

“…[5][6][7][8][9][10][11][12][13][14][15][22][23][24][25][26][27][28][29] The system of two closely spaced nanoparticles is of particular interest as the LSPR of individual particles couple, resulting in greater electric field enhancement [24][25][26] and a systematic red shift compared to a single particle. [22][23][24]28 Field enhancements afforded by LSPRs result in enhanced emission of dyes and QDs in the vicinity of the nanoparticles. [5][6][7][8][9][10][11][12][13][14][15] Briefly, the source of the enhancement is twofold: feedback between the emitter and the resonant nanoparticles increases the emitter's radiative decay rate so the photon emission rate increases and the nanoantenna system acts as a transducer for light from the near field to the far field.…”

mentioning

confidence: 99%