Single nanoparticle plasmonics

Ringe, Emilie; Sharma, Bhavya; Henry, Anne Isabelle; Marks, Laurence D.; Duyne, Richard P. Van

doi:10.1039/c3cp44574g

Cited by 177 publications

(193 citation statements)

References 184 publications

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“…[1][2][3] This collective oscillation leads to an enhanced and confined electric field around the particle. [3][4][5] This phenomenon, called surface plasmon resonance (SPR), has been intensively studied both experimentally [6][7][8][9][10] and theoretically. [11][12][13][14][15][16] Applications include high-sensitivity chemical and biological sensing [17][18][19][20][21][22][23][24][25] as well as energy conversion and storage.…”

Section: Introductionmentioning

confidence: 99%

Quantum coherent plasmon in silver nanowires: A real-time TDDFT study

Ding

Guidez

Aikens

et al. 2014

The Journal of Chemical Physics

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A plasmon-like phenomenon, arising from coinciding resonant excitations of different electronic characteristics in 1D silver nanowires, has been proposed based on theoretical linear absorption spectra. Such a molecular plasmon holds the potential for anisotropic nanoplasmonic applications. However, its dynamical nature remains unexplored. In this work, quantum dynamics of longitudinal and transverse excitations in 1D silver nanowires are carried out within the real-time time-dependent density functional theory framework. The anisotropic electron dynamics confirm that the transverse transitions of different electronic characteristics are collective in nature and oscillate in-phase with respect to each other. Analysis of the time evolutions of participating one-electron wave functions suggests that the transverse transitions form a coherent wave packet that gives rise to a strong plasmon resonance at the molecular level. © 2014 AIP Publishing LLC. [http://dx

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Section: Introductionmentioning

confidence: 99%

Quantum coherent plasmon in silver nanowires: A real-time TDDFT study

Ding

Guidez

Aikens

et al. 2014

The Journal of Chemical Physics

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“…Actually seen from the 3D surface charge plot, the two poles in the middle part of the sphere merge into a big pole, thus only three poles charge are present for each sphere. This mode is the second-order standing-wave plasmon mode commonly observed in plasmonic nanorods 20,49 at an energy just above that of the dipole. The plasmon hybridization theory predicts a red shift in wavelength (i.e., decreased resonance energy) for the bonding mode and a small blue shift (i.e., increased resonance energy) for the antibonding mode with respect to the isolated, single particle resonance energy.…”

Section: Resultsmentioning

confidence: 83%

“…[16][17][18] In addition, experimental mapping of surface plasmons with nanoscale resolution is inherently difficult due to the diffraction limit of light. 19,20 Various approaches such as cathodoluminescence (CL) spectroscopy, 21 and near-field optical spectroscopy 22 can be employed to overcome this limit and gain information about the local electric fields with few nanometer resolution, Recently, electron energy loss spectroscopy (EELS) performed in the low-loss regime has emerged as a powerful tool for mapping LSPRs. [23][24][25][26] However the interpretation of plasmonic EELS data can be difficult, even more so when trying to correlate with near-or far-field light scattering as these techniques do not capture the same information, in particular in the presence of dark modes 27,28 or hot spots between coupled nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Near-field mapping of three-dimensional surface charge poles for hybridized plasmon modes

et al. 2015

Self Cite

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We describe a new computational approach to mapping three-dimensional (3D) surface charge poles and thus to determine complicated and hybridized plasmon modes in metallic nanostructures via finite element method (FEM) calculations. 3D surface charge distributions at the near-field resonance energies are calculated directly using Gauss’ law. For a nanosphere dimer, we demonstrate that higher-order hybridized plasmon modes can be addressed clearly. As an improvement to conventional mapping approaches, this new approach provides a better understanding of comprehensive physical image of plasmonic systems necessary for fundamental studies and spectroscopy applications.

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“…Nanoparticles (NP) prepared from dielectric [4], semiconductor [5], metal [6][7][8][9], and magnetic [10,11] materials have recently become important elements of biosensor technology due to their ability to prepare their surfaces with ligands that enable them to recognize specific target molecules, and their ability to interact with electromagnetic fields in useful ways. Magnetic NPs can be used to facilitate particle manipulation while at the same time providing a mass amplification tag for acoustic biosensors [12].…”

Section: Introductionmentioning

confidence: 99%

Detection and Digital Resolution Counting of Nanoparticles with Optical Resonators and Applications in Biosensing

Aguirre

Long

et al. 2018

Chemosensors

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Abstract:The interaction between nanoparticles and the electromagnetic fields associated with optical nanostructures enables sensing with single-nanoparticle limits of detection and digital resolution counting of captured nanoparticles through their intrinsic dielectric permittivity, absorption, and scattering. This paper will review the fundamental sensing methods, device structures, and detection instruments that have demonstrated the capability to observe the binding and interaction of nanoparticles at the single-unit level, where the nanoparticles are comprised of biomaterial (in the case of a virus or liposome), metal (plasmonic and magnetic nanomaterials), or inorganic dielectric material (such as TiO 2 or SiN). We classify sensing approaches based upon their ability to observe single-nanoparticle attachment/detachment events that occur in a specific location, versus approaches that are capable of generating images of nanoparticle attachment on a nanostructured surface. We describe applications that include study of biomolecular interactions, viral load monitoring, and enzyme-free detection of biomolecules in a test sample in the context of in vitro diagnostics.

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Single nanoparticle plasmonics

Cited by 177 publications

References 184 publications

Quantum coherent plasmon in silver nanowires: A real-time TDDFT study

Quantum coherent plasmon in silver nanowires: A real-time TDDFT study

Near-field mapping of three-dimensional surface charge poles for hybridized plasmon modes

Detection and Digital Resolution Counting of Nanoparticles with Optical Resonators and Applications in Biosensing

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