Optical limitation induced by gold clusters: Mechanism and efficiency

François, Lionel; Mostafavi, Mehran; Belloni, J.; Delaire, Jacques A.

doi:10.1039/b106690k

Cited by 100 publications

(99 citation statements)

References 13 publications

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“…The nonlinear scattering happens widely in various nanomaterials, such as carbon nanotubes [31,33,34,39] and Au nanoclusters. [40] In our experiment, strong light scattering was observed when the dispersions passed through the focus of incident beam. We collect a fraction of scattered light using a convex lens at $308 horizontally to the direct incident beam.…”

Section: à2mentioning

confidence: 92%

Broadband Nonlinear Optical Response of Graphene Dispersions

et al. 2009

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A series of unoxidized and defect‐free graphene dispersions with large populations of single and multilayer graphenes is prepared by employing high‐yield exfoliation of graphene in the liquid phase. The graphene dispersions exhibit broadband optical limiting at 532 and 1064 nm. Nonlinear scattering, originated from the thermally induced solvent bubbles and microplasmas, is responsible for this nonlinear behavior.

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Section: à2mentioning

confidence: 92%

Broadband Nonlinear Optical Response of Graphene Dispersions

et al. 2009

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“…[30] Arguably biological applications of photoinduced heating take place in biological environments, [31] which involves the presence of salts, proteins, etc. While the processes of photoinduced heating have been investigated in detail concerning absorption, [32][33][34] relaxation of the excited electron gas, [35] and dissipation to basic continua such as water or ice, [10,[36][37][38] the influence of the composition of the surrounding medium has not been fully elucidated to date because of the complexity of interactions between inorganic elements (e.g., Au NPs) and biological systems. [17] The understanding of nanostructure-biosystem interactions is especially important since the potential and current use of Au NP heaters implies thermal and physical contact of NPs with biological media such as tissue, blood, etc.…”

Section: Introductionmentioning

confidence: 99%

Photostimulated Au Nanoheaters in Polymer and Biological Media: Characterization of Mechanical Destruction and Boiling

Hühn

Govorov

Rivera-Gil

et al. 2011

Adv Funct Materials

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MaterialsPoly ( Agglomerated gold nanoparticle clusters embedded in polyelectrolyte films are optically excited, which results in local ablation of material from the polyelectrolyte films and in some cases leads to the formation of a gas bubble. Evidence is given that this process is mediated by superheating of the medium around the excited gold nanoparticle clusters. This process is highly dependent on the medium used. Besides the boiling point, salt and proteins in the medium also affect the formation of gas bubbles. These data demonstrate that the type of medium must be considered when describing lightmediated heating of gold nanoparticle clusters, which are fixed in a matrix surrounded by medium.

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“…Experimental studies of the bubble generation around plasmonic NPs include several reports, some of them being done with interesting methods 2,13,14,16,23,41-44. However, these studies have two limitations: the bubbles were not detected directly or the individual NPs were not studied and these limit the accuracy of the data and the conclusions.…”

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confidence: 99%

Plasmonic Nanobubbles as Transient Vapor Nanobubbles Generated around Plasmonic Nanoparticles

et al. 2010

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We have used short laser pulses to generate transient vapor nanobubbles around plasmonic nanoparticles. The photothermal, mechanical and optical properties of such bubbles were found to be different from those of plasmonic nanoparticle and vapor bubbles as well. This phenomena was considered as a new complex nanosystem -plasmonic nanobubble (PNB). Mechanical and optical scattering properties of PNB depended upon the nanoparticle surface and heat capacity, clusterization state, and the optical pulse length. The generation of the PNB required much higher laser pulse fluence thresholds than the explosive boiling level, and was characterized by the relatively high lower threshold of the minimal size (lifetime) of PNB. Optical scattering by PNB and its diameter (measured as the lifetime) has been varied with the fluence of laser pulse and this has demonstrated the tunable nature of PNB.Keywords vapor nanobubble; photothermal; scattering; pulsed laser; gold nanoparticle; plasmon resonance; vapor bubble Plasmonic nanoparticles (NP) are known for their outstanding photothermal [1][2][3][4][5][6] and optical scattering 1,[7][8][9][10][11][12] properties. These properties result from the interaction of NPs with optical radiation and the surrounding environment, and are characterized through their absorption and scattering cross-sections, respectively, which are well studied as a function of the parameters of NP, environment and optical radiation. [13][14][15][16][17][18][19] Since such interaction usually occurs in some medium (environment) the secondary thermal and hydrodynamic phenomena in such medium may significantly influence the properties of NPs as optical probes and heat sources. Short optical pulses and high-energy excitation of plasmonic NPs create transient and non-stationary thermal fields with vapor-liquid interfaces that significantly influence heat transfer from NP to its environment and create a strong gradient of the refractive index. In addition, vapor layers around NP cause blue shifts and attenuation of the extinction spectrum. 20 The multi-factor and non-stationary nature of the radiation-NP-vapor-liquid system complicates its experimental study and theoretical modeling. Available thermal models 6,17,[21][22][23][24] are applicable mainly for continuous excitation and stationary heat transfer at low temperatures or for very short laser pulses (femto-second range), for a limited number of shapes of NP, and for temperatures that assume constant plasmonic cross-sections and are *Rice University, Physics and Astronomy -MS 61, 6100 Main Street, Houston, TX 77005, dmitri.lapotko@rice.edu . NIH Public AccessAuthor Manuscript ACS Nano. Author manuscript; available in PMC 2011 April 27. NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript below the boiling threshold for the environment. Measuring a high transient temperature around individual NPs in a two-phase medium can be quite difficult if not impossible. Experimental methods 8,[21][22][23][24][25] for monitoring the transien...

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Optical limitation induced by gold clusters: Mechanism and efficiency

Cited by 100 publications

References 13 publications

Broadband Nonlinear Optical Response of Graphene Dispersions

Broadband Nonlinear Optical Response of Graphene Dispersions

Photostimulated Au Nanoheaters in Polymer and Biological Media: Characterization of Mechanical Destruction and Boiling

Plasmonic Nanobubbles as Transient Vapor Nanobubbles Generated around Plasmonic Nanoparticles

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