Acoustic and Optical Modes of Single Dumbbells of Gold Nanoparticles

Tchebotareva, Anna L.; Dijk, Meindert A. van; Ruijgrok, Paul V.; Fokkema, Vincent; Hesselberth, Marcel H. S.; Lippitz, Markus; Orrit, Michel

doi:10.1002/cphc.200800289

Cited by 51 publications

(89 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, the generation of hypersonic waves in a variety of materials, geometries and devices, has grown to applications in different areas such as high-frequency electronics [1][2][3], biomedical science [4,5], ultrasensitive mass detection [6,7] and photoacoustic imaging [8,9]. Whereas the generation of coherent vibrations in metal nanoparticles [10][11][12][13], or in small groups of them [14,15] has been subject of active research during the last decade, their applications as local and tunable nanoresonators are still in their beginnings [8].…”

mentioning

confidence: 99%

Tailored Hypersound Generation in Single Plasmonic Nanoantennas

et al. 2016

View full text Add to dashboard Cite

Ultra-short laser pulses impinging on a plasmonic nanostructure trigger a highly dynamic scenario in the interplay of electronic relaxation with lattice vibrations, which can be experimentally probed via the generation of coherent phonons. In this letter we present studies of hypersound generation in the range of a few to tens of GHz on single gold plasmonic nanoantennas, which have additionally been subjected to pre-designed mechanical constraints via silica bridges. Using these hybrid gold/silica nanoantennas, we demonstrate experimentally and via numerical simulations how mechanical constraints allow control over their vibrational mode spectrum. Degenerate pump-probe techniques with double

show abstract

mentioning

confidence: 99%

Tailored Hypersound Generation in Single Plasmonic Nanoantennas

et al. 2016

View full text Add to dashboard Cite

show abstract

“…It is clear that the shape of this curve Figure 5 (online color at: www.lpr-journal.org) Power spectral density after Fourier transformation of the vibrational traces of (top) a spherical particle and (bottom) a slightly elongated particle, with nominal diameter of 80 nm. Insets: SEM images of the same particles, bar length is 300 nm (from [75]). would be altered by averaging over an ensemble of particles with a distribution of plasmon frequencies, and that only single-particle measurements can provide its true shape.…”

Section: Nanospheres (Gold)mentioning

confidence: 99%

“…These ellipsoidal particles often display a complex spectrum of vibrational modes, which is related to the exact shape of the particle. In order to understand how other modes than the breathing can be excited, one should correlate the physical (elastic and optical) properties of each nanoparticle with its geometry (size and shape) [75][76][77][78]. The size of the particle primarily affects the frequency of the resonance.…”

Section: Nanospheres (Gold)mentioning

confidence: 99%

Probing the acoustic vibrations of single metal nanoparticles by ultrashort laser pulses

Tchebotareva¹,

Ruijgrok

Zijlstra

et al. 2010

Laser & Photonics Reviews

View full text Add to dashboard Cite

The strong interaction of metal nanoparticles with light makes it possible to detect individual particles by farfield optical methods. In this article, the interaction of a metal nanoparticle with a short laser pulse is discussed, with the emphasis on the coherent excitation of mechanical (acoustic) modes and the optical detection of these vibrations. The literature on acoustic vibrations of single metal nanoparticles of different shapes (spheres, dumbbells, rods, cubes, wires, prisms) is reviewed, and the modes that have been excited and detected in these particles are discussed. Finally, the insights and potential applications enabled by these studies are summarized.Single gold nanorod and its acoustic vibrations detected by pump-probe spectroscopy. Top: vibration trace of the nanorod (inset: Electron Microscopy image of a 30 90 nm gold nanorod). Bottom: vibrational response as a function of the probe wavelength.

show abstract

“…A single frequency component is presented when there is a single nanoparticle. There are no low frequency components (2-7 GHz), which would be expected if a few particles were in contact (considered as dumbbells) [34]. Figure 5b, On the other hand, if several particles are present in the same point spread function, the signals show various frequency components, due to the different sizes of the nanoparticles.…”

Section: Particle Resolutionmentioning

confidence: 91%

Size Characterisation Method and Detection Enhancement of Plasmonic Nanoparticles in a Pump–Probe System

et al. 2017

View full text Add to dashboard Cite

Abstract:The optical resonance of metal nanoparticles can be used to enhance the generation and detection of their main vibrational mode. In this work, we show that this method allows the accurate characterisation of the particle's size because the vibrational frequency of plasmonic nanoparticles only depends on their mechanical properties. Moreover, by a careful selection of the particle size and/or probe laser wavelength, the detected signal can be increased by a large factor (∼9 for the particles used in this work) under the same illumination conditions. Finally, we show experimentally that particles of different sizes inside the point spread function can be observed due to the differences in their vibrational states, which could provide a feasible route to super-resolution.

show abstract

Acoustic and Optical Modes of Single Dumbbells of Gold Nanoparticles

Cited by 51 publications

References 25 publications

Tailored Hypersound Generation in Single Plasmonic Nanoantennas

Tailored Hypersound Generation in Single Plasmonic Nanoantennas

Probing the acoustic vibrations of single metal nanoparticles by ultrashort laser pulses

Size Characterisation Method and Detection Enhancement of Plasmonic Nanoparticles in a Pump–Probe System

Contact Info

Product

Resources

About