Optical trapping and manipulation of plasmonic nanoparticles: fundamentals, applications, and perspectives

Urban, Alexander S.; Carretero‐Palacios, Sol; Lutich, Andrey A.; Lohmüller, Theobald; Feldmann, Jochen; Jäckel, Frank

doi:10.1039/c3nr06617g

Cited by 133 publications

(112 citation statements)

References 143 publications

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“…20,21 Similar to optical forces, the importance of the temperature field created by plasmonic heating has been realized to be an effective means for driving colloids and macromolecules. 22 As a secondary topic, we describe the current status of plasmonic-manipulation-based bottom-up fabrication.…”

Section: Introductionmentioning

confidence: 99%

Insight into plasmonic hot-electron transfer and plasmon molecular drive: new dimensions in energy conversion and nanofabrication

2017

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Localized surface plasmon resonance (LSPR) of plasmonic nanoparticles and nanostructures has attracted wide attention because the nanoparticles exhibit a strong near-field enhancement through interaction with visible light, enabling subwavelength optics and sensing at the single-molecule level. The extremely fast LSPR decays have raised doubts that such nanoparticles have use in photochemistry and energy storage. Recent studies have demonstrated the capability of such plasmonic systems in producing LSPR-induced hot electrons that are useful in energy conversion and storage when combined with electron-accepting semiconductors. Due to the femtosecond timescale, hot-electron transfer is under intense investigation to promote ongoing applications in photovoltaics and photocatalysis. Concurrently, hot-electron decay results in photothermal responses or plasmonic heating. Importantly, this heating has received renewed interest in photothermal manipulation, despite the developments in optical manipulation using optical forces to move and position nanoparticles and molecules guided by plasmonic nanostructures. To realize plasmonic heating-based manipulation, photothermally generated flows, such as thermophoresis, the Marangoni effect and thermal convection, are exploited. Plasmon-enhanced optical tweezers together with plasmon-induced heating show potential as an ultimate bottom-up method for fabricating nanomaterials. We review recent progress in two fascinating areas: solar energy conversion through interfacial electron transfer in gold-semiconductor composite materials and plasmon-induced nanofabrication.

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Section: Introductionmentioning

confidence: 99%

Insight into plasmonic hot-electron transfer and plasmon molecular drive: new dimensions in energy conversion and nanofabrication

2017

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“…2b presents the qualitative dependences of temperature T on r inside the two neighboring cells for analytical quasistationary (solid lines) distribution accordingly Eq. (22), and numerical non-stationary (dashed lines) distribution for some time instant t P > t > 10 -5 s and for the case of T 1 >T ∞ (heating of medium by heat exchange with irradiated NP ensemble, conditions (11 c) and increasing of medium temperature T 1 ). Temperature is uniform over NP volumes (see (23)) and non-stationary distributions of T(r) around NPs are close to quasi-stationary distributions, because t P > τ 1T .…”

Section: Heating Of Medium By Heat Exchange With Irradiated Np Ensmentioning

confidence: 99%

“…INTRODUCTION In recent years the absorption of radiation energy by NPs, light-to-heat conversion, heat dissipation and exchange with a surrounding material (medium), and following thermal and accompanied phenomena have become increasingly important topics in nanotechnology . Many reasons exist for this interest, including the applications of the light-to-heat conversion in nanoenergy [1][2][3][4][5][6][7][8][9][10][11][12], in photothermal laser nanomedicine [13][14][15][16] and catalysis [17,18], in laser processing of NPs (laser induced transformation of NP size, shape and structure) [19][20][21][22][23][24], etc. These advances in nanotechnology are based on the efficiency of light-to-heat conversion, thermal effects and the processes induced by the laser-NP interaction [1][2][3][4][5][6][7][8][9][10][11][12].…”

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confidence: 99%

Analytical Modeling of the Light-to-Heat Conversion by Nanoparticle Ensemble under Radiation Action

Pustovalov¹

2015

AMSA

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Abstract-The investigations and the use of nanoparticles (NPs), as photothermal agents in light-to-heat conversion processes in nanoenergy and nanotechnology are fast growing areas of research and applications. Analytical investigation of the light-to-heat conversion by nanoparticle ensemble under radiation action was conducted. The investigation of the influence of NPs parameters (their radii, absorption efficiency factor, density and heat capacity of NP material, concentration), the characteristics of radiation (wavelength, pulse duration, radiation beam radius), the surrounding material (its density, heat capacity, and heat conduction coefficient, characteristic length of radiation extinction) on the efficiency of the light-to-heat conversion is carried out. The possibility of thermal confinement (saving NP and material thermal energy practically without heat exchange with surrounding) has been established for single NP and irradiated volume of medium with NPs for determined time intervals. These results can be used for the description of the light-to-heat conversion processes in experimental investigations in nanoenergy and nanotechnology.

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“…Despite its widespread applications in physical, 1,2 materials, 3 and life [4][5][6] sciences, effective trapping of particles in the nanometre scale has been demonstrated only with limited success. 7,8 In comparison with metallic nanoparticles comprising gold 9,10 or silver 11,12 the polarizability of dielectric nanoparticles of a comparable dimension is much smaller. As a result, optical manipulation of dielectric nanoparticles remains challenging.…”

Section: Introductionmentioning

confidence: 99%

Enhanced optical confinement of dielectric nanoparticles by two-photon resonance transition

et al. 2017

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Despite a tremendous success in the optical manipulation of microscopic particles, it remains a challenge to manipulate nanoparticles especially as the polarizability of the particles is small. With a picosecond-pulsed near-infrared laser, we demonstrated recently that the confinement of dye-doped polystyrene nanobeads is significantly enhanced relative to bare nanobeads of the same dimension. We attributed the enhancement to an additional term of the refractive index, which results from two-photon resonance between the dopant and the optical field. The optical confinement is profoundly enhanced as the half-wavelength of the laser falls either on the red side, or slightly away from the blue side, of the absorption band of the dopant. In contrast, the ability to confine the nanobeads is significantly diminished as the half-wavelength of the laser locates either at the peak, or on the blue side, of the absorption band. We suggest that the dispersively shaped polarizability of the dopant near the resonance is responsible to the distinctive spectral dependence of the optical confinement of nanobeads. This work advances our understanding of the underlying mechanism of the enhanced optical confinement of doped nanoparticles with a nearinfrared pulsed laser, and might facilitate future research that benefits from effective sorting of selected nanoparticles beyond the limitations of previous approaches. IntroductionOptical trapping of microscopic objects with a focused continuous wave (cw) laser beam is a mainstream tool to manipulate microscopic particles in solutions. Despite its widespread applications in physical, 1,2 materials, 3 and life 4-6 sciences, effective trapping of particles in the nanometre scale has been demonstrated only with limited success. 7,8In comparison with metallic nanoparticles comprising gold 9,10 or silver 11,12 the polarizability of dielectric nanoparticles of a comparable dimension is much smaller. As a result, optical manipulation of dielectric nanoparticles remains challenging. 13Towards this end, numerous strategies have been attempted aiming either to decrease the pushing (scattering, absorption and temporal) force, or to increase the trapping (gradient) force.14-19 For instance, a near-infrared (NIR) pulsed laser was employed as a trapping laser to minimize the scattering and absorption forces; 14 the temporal force was further decreased with a laser of a long pulse-width.15 On the other hand, the trapping force can be increased by maximizing the gradient of the optical eld; this is achieved mainly by (i) using a high numerical-aperture (NA) objective lens, (ii) creating a large optical eld in the near eld, 14 or (iii) utilizing the intense optical eld associated with a ultrashort pulsed laser. 16Distinct from these approaches, it is possible to boost the gradient force by increasing the real part of the polarizability through optical resonance. This idea has been demonstrated on trapping doped dielectric nanoparticles, whose effective polarizability is increased as a result of opt...

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Optical trapping and manipulation of plasmonic nanoparticles: fundamentals, applications, and perspectives

Cited by 133 publications

References 143 publications

Insight into plasmonic hot-electron transfer and plasmon molecular drive: new dimensions in energy conversion and nanofabrication

Insight into plasmonic hot-electron transfer and plasmon molecular drive: new dimensions in energy conversion and nanofabrication

Analytical Modeling of the Light-to-Heat Conversion by Nanoparticle Ensemble under Radiation Action

Enhanced optical confinement of dielectric nanoparticles by two-photon resonance transition

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