Abstract

Optical trapping of silver nanoplatelets obtained with a simple room temperature chemical synthesis technique is reported. Trap spring constants are measured for platelets with different diameters to investigate the size-scaling behaviour. Experimental data are compared with models of optical forces based on the dipole approximation and on electromagnetic scattering within a T-matrix framework. Finally, we discuss applications of these nanoplatelets for surface-enhanced Raman spectroscopy.

© 2015 Optical Society of America

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References

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2014 (6)

C. H. Chou and F. C. Chen, “Plasmonic nanostructures for light trapping in organic photovoltaic devices,” Nanoscale 6(15), 8444–8458 (2014).
[Crossref] [PubMed]

I. Urries, C. Muñoz, L. Gomez, C. Marquina, V. Sebastian, M. Arruebo, and J. Santamaria, “Magneto-plasmonic nanoparticles as theranostic platforms for magnetic resonance imaging, drug delivery and NIR hyperthermia applications,” Nanoscale 6(15), 9230–9240 (2014).
[Crossref] [PubMed]

W. Xiong, R. Mazid, L. W. Yap, X. Li, and W. Cheng, “Plasmonic caged gold nanorods for near-infrared light controlled drug delivery,” Nanoscale 6(23), 14388–14393 (2014).
[Crossref] [PubMed]

S. H. Simpson, “Inhomogeneous and anisotropic particles in optical traps: physical behaviour and applications,” J. Quant. Spectros. Ra. 146, 81–99 (2014).
[Crossref]

M. G. Donato, J. Hernandez, A. Mazzulla, C. Provenzano, R. Saija, R. Sayed, S. Vasi, A. Magazzù, P. Pagliusi, R. Bartolino, P. G. Gucciardi, O. M. Maragò, and G. Cipparrone, “Polarization-dependent optomechanics mediated by chiral microresonators,” Nat. Commun. 5, 3656 (2014).
[Crossref] [PubMed]

C. D’Andrea, B. Fazio, P. G. Gucciardi, M. C. Giordano, C. Martella, D. Chiappe, A. Toma, F. Buatier de Mongeot, F. Tantussi, P. Vasanthakumar, F. Fuso, and M. Allegrini, “SERS enhancement and field confinement in nanosensors based on self-organizad gold nanowires produced by Ion-Beam sputtering,” J. Phys. Chem. C 118(16), 8571–8580 (2014).
[Crossref]

2013 (5)

G. Volpe and G. Volpe, “Simulation of a Brownian particle in an optical trap,” Am. J. Phys. 81(3), 224–230 (2013).
[Crossref]

C. D’Andrea, J. Bochterle, A. Toma, C. Huck, F. Neubrech, E. Messina, B. Fazio, O. M. Maragò, E. Di Fabrizio, M. Lamy de La Chapelle, P. G. Gucciardi, and A. Pucci, “Optical Nanoantennas for Multiband surface-enhanced infrared and Raman spectroscopy,” ACS Nano 7(4), 3522–3531 (2013).
[Crossref] [PubMed]

F. Moreno, P. Albella, and M. Nieto-Vesperinas, “Analysis of the spectral behavior of localized plasmon resonances in the near- and far-field regimes,” Langmuir 29(22), 6715–6721 (2013).
[Crossref] [PubMed]

O. M. Maragò, P. H. Jones, P. G. Gucciardi, G. Volpe, and A. C. Ferrari, “Optical trapping and manipulation of nanostructures,” Nat. Nanotechnol. 8(11), 807–819 (2013).
[Crossref] [PubMed]

Z. Yan, M. Pelton, L. Vigderman, E. R. Zubarev, and N. F. Scherer, “Why single-beam optical tweezers trap gold nanowires in three dimensions,” ACS Nano 7(10), 8794–8800 (2013).
[Crossref] [PubMed]

2012 (2)

Z. Yan, J. E. Jureller, J. Sweet, M. J. Guffey, M. Pelton, and N. F. Scherer, “Three-Dimensional Optical Trapping and Manipulation of Single Silver Nanowires,” Nano Lett. 12(10), 5155–5161 (2012).
[Crossref] [PubMed]

E. Messina, L. D’Urso, E. Fazio, C. Satriano, M. G. Donato, C. D’Andrea, O. M. Maragò, P. G. Gucciardi, G. Compagnini, and F. Neri, “Tuning the structural and optical properties of gold/silver nano-alloys prepared by laser ablation in liquids for optical limiting, ultra-sensitive spectroscopy, and optical trapping,” J. Quant. Spectros. Ra. 113(18), 2490–2498 (2012).
[Crossref]

2011 (6)

E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
[Crossref]

E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
[Crossref] [PubMed]

K. Dholakia and T. Čižmár, “Shaping the future of manipulation,” Nat. Photonics 5(6), 335–342 (2011).
[Crossref]

A. McLeod, A. Weber-Bargioni, Z. Zhang, S. Dhuey, B. Harteneck, J. B. Neaton, S. Cabrini, and P. J. Schuck, “Nonperturbative Visualization of Nanoscale Plasmonic Field Distributions via Photon Localization Microscopy,” Phys. Rev. Lett. 106(3), 037402 (2011).
[Crossref] [PubMed]

T. A. Nieminen, V. L. Loke, A. B. Stilgoe, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “T-matrix method for modelling optical tweezers,” J. Mod. Opt. 58(5-6), 528–544 (2011).
[Crossref]

E. C. Le Ru, S. A. Meyer, C. Artur, P. G. J. Etchegoin, J. Grand, P. Lang, and F. Maurel, “Experimental Demonstration of surface selection rules for SERS on flat metallic surfaces,” Chem. Commun. (Camb.) 47(13), 3903–3905 (2011).
[Crossref] [PubMed]

2010 (5)

O. M. Maragó, F. Bonaccorso, R. Saija, G. Privitera, P. G. Gucciardi, M. A. Iatì, G. Calogero, P. H. Jones, F. Borghese, P. Denti, V. Nicolosi, and A. C. Ferrari, “Brownian Motion of Graphene,” ACS Nano 4(12), 7515–7523 (2010).
[Crossref] [PubMed]

H. A. Atwater and A. Polman, “Plasmonics for improved photovoltaic devices,” Nat. Mater. 9(3), 205–213 (2010).
[Crossref] [PubMed]

X. Huang and M. El-Sayed, “Gold nanoparticles: Optical properties and implementations in cancer diagnosis and photothermal therapy,” J. Advert. Res. 1(1), 13–28 (2010).
[Crossref]

V. Amendola, O. M. Bakr, and F. Stellacci, “A study of the surface plasmon resonance of silver nanoparticles by the discrete dipole approximation method: effect of shape, size, structure and assembly,” Plasmonics 5(1), 85–97 (2010).
[Crossref]

L. Tong, V. D. Miljković, and M. Käll, “Alignment, Rotation, and Spinning of Single Plasmonic Nanoparticles and Nanowires Using Polarization Dependent Optical Forces,” Nano Lett. 10(1), 268–273 (2010).
[Crossref] [PubMed]

2009 (3)

T. A. Nieminen, T. Asavei, V. L. Loke, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Symmetry and the generation and measurement of optical torque,” J. Quant. Spectros. Ra. 110(14-16), 1472–1482 (2009).
[Crossref]

P. H. Jones, F. Palmisano, F. Bonaccorso, P. G. Gucciardi, G. Calogero, A. C. Ferrari, and O. M. Maragó, “Rotation detection in light-driven nanorotors,” ACS Nano 3(10), 3077–3084 (2009).
[Crossref] [PubMed]

R. Saija, P. Denti, F. Borghese, O. M. Maragò, and M. A. Iatì, “Optical trapping calculations for metal nanoparticles. Comparison with experimental data for Au and Ag spheres,” Opt. Express 17(12), 10231–10241 (2009).
[Crossref] [PubMed]

2008 (4)

C. Selhuber-Unkel, I. Zins, O. Schubert, C. Sönnichsen, and L. B. Oddershede, “Quantitative optical trapping of single gold nanorods,” Nano Lett. 8(9), 2998–3003 (2008).
[Crossref] [PubMed]

L. Bosanac, T. Aabo, P. M. Bendix, and L. B. Oddershede, “Efficient optical trapping and visualization of silver nanoparticles,” Nano Lett. 8(5), 1486–1491 (2008).
[Crossref] [PubMed]

P. Albella, F. Moreno, J. M. Saiz, and F. González, “Surface inspection by monitoring spectral shifts of localized plasmon resonances,” Opt. Express 16(17), 12872–12879 (2008).
[PubMed]

J. Z. Zhang and C. Noguez, “Plasmonic optical properties and applications of metal nanostructures,” Plasmonics 3(4), 127–150 (2008).
[Crossref]

2007 (9)

K. C. Toussaint, M. Liu, M. Pelton, J. Pesic, M. J. Guffey, P. Guyot-Sionnest, and N. F. Scherer, “Plasmon resonance-based optical trapping of single and multiple Au nanoparticles,” Opt. Express 15(19), 12017–12029 (2007).
[Crossref] [PubMed]

V. Amendola, S. Polizzi, and M. Meneghetti, “Free silver nanoparticles synthesized by laser ablation in organic solvents and their easy functionalization,” Langmuir 23(12), 6766–6770 (2007).
[Crossref] [PubMed]

G. Compagnini, E. Messina, O. Puglisi, and V. Nicolosi, “Synthesis of Au/Ag colloidal nano-alloys: exploring the optical properties for an accurate analysis,” Appl. Surf. Sci. 254(4), 1007–1011 (2007).
[Crossref]

D. V. Petrov, “Raman spectroscopyof optically trapped particles,” J. Opt. A, Pure Appl. Opt. 9(8), S139–S156 (2007).
[Crossref]

J. G. de la Torre, G. R. Echenique, and A. Ortega, “Improved calculation of rotational diffusion and intrinsic viscosity of bead models for macromolecules and nanoparticles,” J. Phys. Chem. B 111(5), 955–961 (2007).
[Crossref] [PubMed]

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V. Amendola, O. M. Bakr, and F. Stellacci, “A study of the surface plasmon resonance of silver nanoparticles by the discrete dipole approximation method: effect of shape, size, structure and assembly,” Plasmonics 5(1), 85–97 (2010).
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L. Bosanac, T. Aabo, P. M. Bendix, and L. B. Oddershede, “Efficient optical trapping and visualization of silver nanoparticles,” Nano Lett. 8(5), 1486–1491 (2008).
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S. H. Simpson, D. C. Benito, and S. Hanna, “Polarization-induced torque in optical traps,” Phys. Rev. A 76(4), 043408 (2007).
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P. M. Hansen, V. K. Bhatia, N. Harrit, and L. Oddershede, “Expanding the optical trapping range of gold nanoparticles,” Nano Lett. 5(10), 1937–1942 (2005).
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T. A. Nieminen, H. Rubinsztein-Dunlop, N. R. Heckenberg, and A. I. Bishop, “Numerical modelling of optical trapping,” Comput. Phys. Commun. 142(1-3), 468–471 (2001).
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Block, S. M.

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P. H. Jones, F. Palmisano, F. Bonaccorso, P. G. Gucciardi, G. Calogero, A. C. Ferrari, and O. M. Maragó, “Rotation detection in light-driven nanorotors,” ACS Nano 3(10), 3077–3084 (2009).
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E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
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O. M. Maragó, F. Bonaccorso, R. Saija, G. Privitera, P. G. Gucciardi, M. A. Iatì, G. Calogero, P. H. Jones, F. Borghese, P. Denti, V. Nicolosi, and A. C. Ferrari, “Brownian Motion of Graphene,” ACS Nano 4(12), 7515–7523 (2010).
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R. Saija, P. Denti, F. Borghese, O. M. Maragò, and M. A. Iatì, “Optical trapping calculations for metal nanoparticles. Comparison with experimental data for Au and Ag spheres,” Opt. Express 17(12), 10231–10241 (2009).
[Crossref] [PubMed]

F. Borghese, P. Denti, R. Saija, and M. A. Iatì, “Optical trapping of nonspherical particles in the T-matrix formalism,” Opt. Express 15(19), 11984–11998 (2007).
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F. Borghese, P. Denti, R. Saija, and M. A. Iatì, “Radiation torque on nonspherical particles in the transition matrix formalism,” Opt. Express 14(20), 9508–9521 (2006).
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L. Bosanac, T. Aabo, P. M. Bendix, and L. B. Oddershede, “Efficient optical trapping and visualization of silver nanoparticles,” Nano Lett. 8(5), 1486–1491 (2008).
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C. Burda, X. Chen, R. Narayanan, and M. A. El-Sayed, “Chemistry and Properties of Nanocrystals of Different Shapes,” Chem. Rev. 105(4), 1025–1102 (2005).
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E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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O. M. Maragó, F. Bonaccorso, R. Saija, G. Privitera, P. G. Gucciardi, M. A. Iatì, G. Calogero, P. H. Jones, F. Borghese, P. Denti, V. Nicolosi, and A. C. Ferrari, “Brownian Motion of Graphene,” ACS Nano 4(12), 7515–7523 (2010).
[Crossref] [PubMed]

P. H. Jones, F. Palmisano, F. Bonaccorso, P. G. Gucciardi, G. Calogero, A. C. Ferrari, and O. M. Maragó, “Rotation detection in light-driven nanorotors,” ACS Nano 3(10), 3077–3084 (2009).
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Carrasco, B.

B. Carrasco and J. García de la Torre, “Hydrodynamic properties of rigid particles: comparison of different modeling and computational procedures,” Biophys. J. 76(6), 3044–3057 (1999).
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Cavallaro, E.

E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
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Chen, F. C.

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C. H. Chou and F. C. Chen, “Plasmonic nanostructures for light trapping in organic photovoltaic devices,” Nanoscale 6(15), 8444–8458 (2014).
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P. B. Johnson and R. W. Christy, “Optical constants of the noble metals,” Phys. Rev. B 6(12), 4370–4379 (1972).
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M. G. Donato, J. Hernandez, A. Mazzulla, C. Provenzano, R. Saija, R. Sayed, S. Vasi, A. Magazzù, P. Pagliusi, R. Bartolino, P. G. Gucciardi, O. M. Maragò, and G. Cipparrone, “Polarization-dependent optomechanics mediated by chiral microresonators,” Nat. Commun. 5, 3656 (2014).
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K. Dholakia and T. Čižmár, “Shaping the future of manipulation,” Nat. Photonics 5(6), 335–342 (2011).
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E. Messina, L. D’Urso, E. Fazio, C. Satriano, M. G. Donato, C. D’Andrea, O. M. Maragò, P. G. Gucciardi, G. Compagnini, and F. Neri, “Tuning the structural and optical properties of gold/silver nano-alloys prepared by laser ablation in liquids for optical limiting, ultra-sensitive spectroscopy, and optical trapping,” J. Quant. Spectros. Ra. 113(18), 2490–2498 (2012).
[Crossref]

E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
[Crossref]

E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, “The optical properties of metal nanoparticles: the influence of size, shape, and dielectric environment,” J. Phys. Chem. B 107(3), 668–677 (2003).
[Crossref]

Cruz, C. H.

D’Andrea, C.

C. D’Andrea, B. Fazio, P. G. Gucciardi, M. C. Giordano, C. Martella, D. Chiappe, A. Toma, F. Buatier de Mongeot, F. Tantussi, P. Vasanthakumar, F. Fuso, and M. Allegrini, “SERS enhancement and field confinement in nanosensors based on self-organizad gold nanowires produced by Ion-Beam sputtering,” J. Phys. Chem. C 118(16), 8571–8580 (2014).
[Crossref]

C. D’Andrea, J. Bochterle, A. Toma, C. Huck, F. Neubrech, E. Messina, B. Fazio, O. M. Maragò, E. Di Fabrizio, M. Lamy de La Chapelle, P. G. Gucciardi, and A. Pucci, “Optical Nanoantennas for Multiband surface-enhanced infrared and Raman spectroscopy,” ACS Nano 7(4), 3522–3531 (2013).
[Crossref] [PubMed]

E. Messina, L. D’Urso, E. Fazio, C. Satriano, M. G. Donato, C. D’Andrea, O. M. Maragò, P. G. Gucciardi, G. Compagnini, and F. Neri, “Tuning the structural and optical properties of gold/silver nano-alloys prepared by laser ablation in liquids for optical limiting, ultra-sensitive spectroscopy, and optical trapping,” J. Quant. Spectros. Ra. 113(18), 2490–2498 (2012).
[Crossref]

E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
[Crossref]

D’Urso, L.

E. Messina, L. D’Urso, E. Fazio, C. Satriano, M. G. Donato, C. D’Andrea, O. M. Maragò, P. G. Gucciardi, G. Compagnini, and F. Neri, “Tuning the structural and optical properties of gold/silver nano-alloys prepared by laser ablation in liquids for optical limiting, ultra-sensitive spectroscopy, and optical trapping,” J. Quant. Spectros. Ra. 113(18), 2490–2498 (2012).
[Crossref]

de la Torre, J. G.

J. G. de la Torre, G. R. Echenique, and A. Ortega, “Improved calculation of rotational diffusion and intrinsic viscosity of bead models for macromolecules and nanoparticles,” J. Phys. Chem. B 111(5), 955–961 (2007).
[Crossref] [PubMed]

Denti, P.

E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
[Crossref] [PubMed]

E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
[Crossref]

O. M. Maragó, F. Bonaccorso, R. Saija, G. Privitera, P. G. Gucciardi, M. A. Iatì, G. Calogero, P. H. Jones, F. Borghese, P. Denti, V. Nicolosi, and A. C. Ferrari, “Brownian Motion of Graphene,” ACS Nano 4(12), 7515–7523 (2010).
[Crossref] [PubMed]

R. Saija, P. Denti, F. Borghese, O. M. Maragò, and M. A. Iatì, “Optical trapping calculations for metal nanoparticles. Comparison with experimental data for Au and Ag spheres,” Opt. Express 17(12), 10231–10241 (2009).
[Crossref] [PubMed]

F. Borghese, P. Denti, R. Saija, and M. A. Iatì, “Optical trapping of nonspherical particles in the T-matrix formalism,” Opt. Express 15(19), 11984–11998 (2007).
[Crossref] [PubMed]

F. Borghese, P. Denti, R. Saija, and M. A. Iatì, “Radiation torque on nonspherical particles in the transition matrix formalism,” Opt. Express 14(20), 9508–9521 (2006).
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E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
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E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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R. Saija, P. Denti, F. Borghese, O. M. Maragò, and M. A. Iatì, “Optical trapping calculations for metal nanoparticles. Comparison with experimental data for Au and Ag spheres,” Opt. Express 17(12), 10231–10241 (2009).
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I. Urries, C. Muñoz, L. Gomez, C. Marquina, V. Sebastian, M. Arruebo, and J. Santamaria, “Magneto-plasmonic nanoparticles as theranostic platforms for magnetic resonance imaging, drug delivery and NIR hyperthermia applications,” Nanoscale 6(15), 9230–9240 (2014).
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B. J. Wiley, S. H. Im, Z. Y. Li, J. McLellan, A. Siekkinen, and Y. Xia, “Maneuvering the surface plasmon resonance of silver nanostructures through shape-controlled synthesis,” J. Phys. Chem. B 110(32), 15666–15675 (2006).
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A. McLeod, A. Weber-Bargioni, Z. Zhang, S. Dhuey, B. Harteneck, J. B. Neaton, S. Cabrini, and P. J. Schuck, “Nonperturbative Visualization of Nanoscale Plasmonic Field Distributions via Photon Localization Microscopy,” Phys. Rev. Lett. 106(3), 037402 (2011).
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E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
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V. Amendola, S. Polizzi, and M. Meneghetti, “Laser ablation synthesis of gold nanoparticles in organic solvents,” J. Phys. Chem. B 110(14), 7232–7237 (2006).
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C. D’Andrea, J. Bochterle, A. Toma, C. Huck, F. Neubrech, E. Messina, B. Fazio, O. M. Maragò, E. Di Fabrizio, M. Lamy de La Chapelle, P. G. Gucciardi, and A. Pucci, “Optical Nanoantennas for Multiband surface-enhanced infrared and Raman spectroscopy,” ACS Nano 7(4), 3522–3531 (2013).
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E. Messina, L. D’Urso, E. Fazio, C. Satriano, M. G. Donato, C. D’Andrea, O. M. Maragò, P. G. Gucciardi, G. Compagnini, and F. Neri, “Tuning the structural and optical properties of gold/silver nano-alloys prepared by laser ablation in liquids for optical limiting, ultra-sensitive spectroscopy, and optical trapping,” J. Quant. Spectros. Ra. 113(18), 2490–2498 (2012).
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E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
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G. Compagnini, E. Messina, O. Puglisi, and V. Nicolosi, “Synthesis of Au/Ag colloidal nano-alloys: exploring the optical properties for an accurate analysis,” Appl. Surf. Sci. 254(4), 1007–1011 (2007).
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E. C. Le Ru, S. A. Meyer, C. Artur, P. G. J. Etchegoin, J. Grand, P. Lang, and F. Maurel, “Experimental Demonstration of surface selection rules for SERS on flat metallic surfaces,” Chem. Commun. (Camb.) 47(13), 3903–3905 (2011).
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E. Messina, L. D’Urso, E. Fazio, C. Satriano, M. G. Donato, C. D’Andrea, O. M. Maragò, P. G. Gucciardi, G. Compagnini, and F. Neri, “Tuning the structural and optical properties of gold/silver nano-alloys prepared by laser ablation in liquids for optical limiting, ultra-sensitive spectroscopy, and optical trapping,” J. Quant. Spectros. Ra. 113(18), 2490–2498 (2012).
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C. D’Andrea, J. Bochterle, A. Toma, C. Huck, F. Neubrech, E. Messina, B. Fazio, O. M. Maragò, E. Di Fabrizio, M. Lamy de La Chapelle, P. G. Gucciardi, and A. Pucci, “Optical Nanoantennas for Multiband surface-enhanced infrared and Raman spectroscopy,” ACS Nano 7(4), 3522–3531 (2013).
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Nicolosi, V.

O. M. Maragó, F. Bonaccorso, R. Saija, G. Privitera, P. G. Gucciardi, M. A. Iatì, G. Calogero, P. H. Jones, F. Borghese, P. Denti, V. Nicolosi, and A. C. Ferrari, “Brownian Motion of Graphene,” ACS Nano 4(12), 7515–7523 (2010).
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G. Compagnini, E. Messina, O. Puglisi, and V. Nicolosi, “Synthesis of Au/Ag colloidal nano-alloys: exploring the optical properties for an accurate analysis,” Appl. Surf. Sci. 254(4), 1007–1011 (2007).
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T. A. Nieminen, T. Asavei, V. L. Loke, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Symmetry and the generation and measurement of optical torque,” J. Quant. Spectros. Ra. 110(14-16), 1472–1482 (2009).
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T. A. Nieminen, H. Rubinsztein-Dunlop, N. R. Heckenberg, and A. I. Bishop, “Numerical modelling of optical trapping,” Comput. Phys. Commun. 142(1-3), 468–471 (2001).
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F. Moreno, P. Albella, and M. Nieto-Vesperinas, “Analysis of the spectral behavior of localized plasmon resonances in the near- and far-field regimes,” Langmuir 29(22), 6715–6721 (2013).
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C. Selhuber-Unkel, I. Zins, O. Schubert, C. Sönnichsen, and L. B. Oddershede, “Quantitative optical trapping of single gold nanorods,” Nano Lett. 8(9), 2998–3003 (2008).
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M. Pelton, M. Liu, H. Y. Kim, G. Smith, P. Guyot-Sionnest, and N. F. Scherer, “Optical trapping and alignment of single gold nanorods by using plasmon resonances,” Opt. Lett. 31(13), 2075–2077 (2006).
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V. Amendola, S. Polizzi, and M. Meneghetti, “Free silver nanoparticles synthesized by laser ablation in organic solvents and their easy functionalization,” Langmuir 23(12), 6766–6770 (2007).
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V. Amendola, S. Polizzi, and M. Meneghetti, “Laser ablation synthesis of gold nanoparticles in organic solvents,” J. Phys. Chem. B 110(14), 7232–7237 (2006).
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H. A. Atwater and A. Polman, “Plasmonics for improved photovoltaic devices,” Nat. Mater. 9(3), 205–213 (2010).
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M. G. Donato, J. Hernandez, A. Mazzulla, C. Provenzano, R. Saija, R. Sayed, S. Vasi, A. Magazzù, P. Pagliusi, R. Bartolino, P. G. Gucciardi, O. M. Maragò, and G. Cipparrone, “Polarization-dependent optomechanics mediated by chiral microresonators,” Nat. Commun. 5, 3656 (2014).
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C. D’Andrea, J. Bochterle, A. Toma, C. Huck, F. Neubrech, E. Messina, B. Fazio, O. M. Maragò, E. Di Fabrizio, M. Lamy de La Chapelle, P. G. Gucciardi, and A. Pucci, “Optical Nanoantennas for Multiband surface-enhanced infrared and Raman spectroscopy,” ACS Nano 7(4), 3522–3531 (2013).
[Crossref] [PubMed]

Puglisi, O.

G. Compagnini, E. Messina, O. Puglisi, and V. Nicolosi, “Synthesis of Au/Ag colloidal nano-alloys: exploring the optical properties for an accurate analysis,” Appl. Surf. Sci. 254(4), 1007–1011 (2007).
[Crossref]

Rodriguez, E.

Rubinsztein-Dunlop, H.

T. A. Nieminen, V. L. Loke, A. B. Stilgoe, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “T-matrix method for modelling optical tweezers,” J. Mod. Opt. 58(5-6), 528–544 (2011).
[Crossref]

T. A. Nieminen, T. Asavei, V. L. Loke, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “Symmetry and the generation and measurement of optical torque,” J. Quant. Spectros. Ra. 110(14-16), 1472–1482 (2009).
[Crossref]

T. A. Nieminen, H. Rubinsztein-Dunlop, N. R. Heckenberg, and A. I. Bishop, “Numerical modelling of optical trapping,” Comput. Phys. Commun. 142(1-3), 468–471 (2001).
[Crossref]

Saija, R.

M. G. Donato, J. Hernandez, A. Mazzulla, C. Provenzano, R. Saija, R. Sayed, S. Vasi, A. Magazzù, P. Pagliusi, R. Bartolino, P. G. Gucciardi, O. M. Maragò, and G. Cipparrone, “Polarization-dependent optomechanics mediated by chiral microresonators,” Nat. Commun. 5, 3656 (2014).
[Crossref] [PubMed]

E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
[Crossref]

E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
[Crossref] [PubMed]

O. M. Maragó, F. Bonaccorso, R. Saija, G. Privitera, P. G. Gucciardi, M. A. Iatì, G. Calogero, P. H. Jones, F. Borghese, P. Denti, V. Nicolosi, and A. C. Ferrari, “Brownian Motion of Graphene,” ACS Nano 4(12), 7515–7523 (2010).
[Crossref] [PubMed]

R. Saija, P. Denti, F. Borghese, O. M. Maragò, and M. A. Iatì, “Optical trapping calculations for metal nanoparticles. Comparison with experimental data for Au and Ag spheres,” Opt. Express 17(12), 10231–10241 (2009).
[Crossref] [PubMed]

F. Borghese, P. Denti, R. Saija, and M. A. Iatì, “Optical trapping of nonspherical particles in the T-matrix formalism,” Opt. Express 15(19), 11984–11998 (2007).
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F. Borghese, P. Denti, R. Saija, and M. A. Iatì, “Radiation torque on nonspherical particles in the transition matrix formalism,” Opt. Express 14(20), 9508–9521 (2006).
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Saiz, J. M.

Santamaria, J.

I. Urries, C. Muñoz, L. Gomez, C. Marquina, V. Sebastian, M. Arruebo, and J. Santamaria, “Magneto-plasmonic nanoparticles as theranostic platforms for magnetic resonance imaging, drug delivery and NIR hyperthermia applications,” Nanoscale 6(15), 9230–9240 (2014).
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Satriano, C.

E. Messina, L. D’Urso, E. Fazio, C. Satriano, M. G. Donato, C. D’Andrea, O. M. Maragò, P. G. Gucciardi, G. Compagnini, and F. Neri, “Tuning the structural and optical properties of gold/silver nano-alloys prepared by laser ablation in liquids for optical limiting, ultra-sensitive spectroscopy, and optical trapping,” J. Quant. Spectros. Ra. 113(18), 2490–2498 (2012).
[Crossref]

Sayed, R.

M. G. Donato, J. Hernandez, A. Mazzulla, C. Provenzano, R. Saija, R. Sayed, S. Vasi, A. Magazzù, P. Pagliusi, R. Bartolino, P. G. Gucciardi, O. M. Maragò, and G. Cipparrone, “Polarization-dependent optomechanics mediated by chiral microresonators,” Nat. Commun. 5, 3656 (2014).
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Z. Yan, M. Pelton, L. Vigderman, E. R. Zubarev, and N. F. Scherer, “Why single-beam optical tweezers trap gold nanowires in three dimensions,” ACS Nano 7(10), 8794–8800 (2013).
[Crossref] [PubMed]

Z. Yan, J. E. Jureller, J. Sweet, M. J. Guffey, M. Pelton, and N. F. Scherer, “Three-Dimensional Optical Trapping and Manipulation of Single Silver Nanowires,” Nano Lett. 12(10), 5155–5161 (2012).
[Crossref] [PubMed]

K. C. Toussaint, M. Liu, M. Pelton, J. Pesic, M. J. Guffey, P. Guyot-Sionnest, and N. F. Scherer, “Plasmon resonance-based optical trapping of single and multiple Au nanoparticles,” Opt. Express 15(19), 12017–12029 (2007).
[Crossref] [PubMed]

M. Pelton, M. Liu, H. Y. Kim, G. Smith, P. Guyot-Sionnest, and N. F. Scherer, “Optical trapping and alignment of single gold nanorods by using plasmon resonances,” Opt. Lett. 31(13), 2075–2077 (2006).
[Crossref] [PubMed]

Schubert, O.

C. Selhuber-Unkel, I. Zins, O. Schubert, C. Sönnichsen, and L. B. Oddershede, “Quantitative optical trapping of single gold nanorods,” Nano Lett. 8(9), 2998–3003 (2008).
[Crossref] [PubMed]

Schuck, P. J.

A. McLeod, A. Weber-Bargioni, Z. Zhang, S. Dhuey, B. Harteneck, J. B. Neaton, S. Cabrini, and P. J. Schuck, “Nonperturbative Visualization of Nanoscale Plasmonic Field Distributions via Photon Localization Microscopy,” Phys. Rev. Lett. 106(3), 037402 (2011).
[Crossref] [PubMed]

Sebastian, V.

I. Urries, C. Muñoz, L. Gomez, C. Marquina, V. Sebastian, M. Arruebo, and J. Santamaria, “Magneto-plasmonic nanoparticles as theranostic platforms for magnetic resonance imaging, drug delivery and NIR hyperthermia applications,” Nanoscale 6(15), 9230–9240 (2014).
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C. Selhuber-Unkel, I. Zins, O. Schubert, C. Sönnichsen, and L. B. Oddershede, “Quantitative optical trapping of single gold nanorods,” Nano Lett. 8(9), 2998–3003 (2008).
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Siekkinen, A.

B. J. Wiley, S. H. Im, Z. Y. Li, J. McLellan, A. Siekkinen, and Y. Xia, “Maneuvering the surface plasmon resonance of silver nanostructures through shape-controlled synthesis,” J. Phys. Chem. B 110(32), 15666–15675 (2006).
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S. H. Simpson, D. C. Benito, and S. Hanna, “Polarization-induced torque in optical traps,” Phys. Rev. A 76(4), 043408 (2007).
[Crossref]

S. H. Simpson and S. Hanna, “Optical trapping of spheroidal particles in Gaussian beams,” J. Opt. Soc. Am. A 24(2), 430–443 (2007).
[Crossref] [PubMed]

Smith, G.

Sönnichsen, C.

C. Selhuber-Unkel, I. Zins, O. Schubert, C. Sönnichsen, and L. B. Oddershede, “Quantitative optical trapping of single gold nanorods,” Nano Lett. 8(9), 2998–3003 (2008).
[Crossref] [PubMed]

Stellacci, F.

V. Amendola, O. M. Bakr, and F. Stellacci, “A study of the surface plasmon resonance of silver nanoparticles by the discrete dipole approximation method: effect of shape, size, structure and assembly,” Plasmonics 5(1), 85–97 (2010).
[Crossref]

Stilgoe, A. B.

T. A. Nieminen, V. L. Loke, A. B. Stilgoe, N. R. Heckenberg, and H. Rubinsztein-Dunlop, “T-matrix method for modelling optical tweezers,” J. Mod. Opt. 58(5-6), 528–544 (2011).
[Crossref]

Svedberg, F.

F. Svedberg, Z. Li, H. Xu, and M. Käll, “Creating hot nanoparticle pairs for surface-enhanced raman spectroscopy through optical manipulation,” Nano Lett. 6(12), 2639–2641 (2006).
[Crossref] [PubMed]

Svoboda, K.

Sweet, J.

Z. Yan, J. E. Jureller, J. Sweet, M. J. Guffey, M. Pelton, and N. F. Scherer, “Three-Dimensional Optical Trapping and Manipulation of Single Silver Nanowires,” Nano Lett. 12(10), 5155–5161 (2012).
[Crossref] [PubMed]

Tantussi, F.

C. D’Andrea, B. Fazio, P. G. Gucciardi, M. C. Giordano, C. Martella, D. Chiappe, A. Toma, F. Buatier de Mongeot, F. Tantussi, P. Vasanthakumar, F. Fuso, and M. Allegrini, “SERS enhancement and field confinement in nanosensors based on self-organizad gold nanowires produced by Ion-Beam sputtering,” J. Phys. Chem. C 118(16), 8571–8580 (2014).
[Crossref]

Toma, A.

C. D’Andrea, B. Fazio, P. G. Gucciardi, M. C. Giordano, C. Martella, D. Chiappe, A. Toma, F. Buatier de Mongeot, F. Tantussi, P. Vasanthakumar, F. Fuso, and M. Allegrini, “SERS enhancement and field confinement in nanosensors based on self-organizad gold nanowires produced by Ion-Beam sputtering,” J. Phys. Chem. C 118(16), 8571–8580 (2014).
[Crossref]

C. D’Andrea, J. Bochterle, A. Toma, C. Huck, F. Neubrech, E. Messina, B. Fazio, O. M. Maragò, E. Di Fabrizio, M. Lamy de La Chapelle, P. G. Gucciardi, and A. Pucci, “Optical Nanoantennas for Multiband surface-enhanced infrared and Raman spectroscopy,” ACS Nano 7(4), 3522–3531 (2013).
[Crossref] [PubMed]

Tong, L.

L. Tong, V. D. Miljković, and M. Käll, “Alignment, Rotation, and Spinning of Single Plasmonic Nanoparticles and Nanowires Using Polarization Dependent Optical Forces,” Nano Lett. 10(1), 268–273 (2010).
[Crossref] [PubMed]

Toussaint, K. C.

Urries, I.

I. Urries, C. Muñoz, L. Gomez, C. Marquina, V. Sebastian, M. Arruebo, and J. Santamaria, “Magneto-plasmonic nanoparticles as theranostic platforms for magnetic resonance imaging, drug delivery and NIR hyperthermia applications,” Nanoscale 6(15), 9230–9240 (2014).
[Crossref] [PubMed]

Vasanthakumar, P.

C. D’Andrea, B. Fazio, P. G. Gucciardi, M. C. Giordano, C. Martella, D. Chiappe, A. Toma, F. Buatier de Mongeot, F. Tantussi, P. Vasanthakumar, F. Fuso, and M. Allegrini, “SERS enhancement and field confinement in nanosensors based on self-organizad gold nanowires produced by Ion-Beam sputtering,” J. Phys. Chem. C 118(16), 8571–8580 (2014).
[Crossref]

Vasi, S.

M. G. Donato, J. Hernandez, A. Mazzulla, C. Provenzano, R. Saija, R. Sayed, S. Vasi, A. Magazzù, P. Pagliusi, R. Bartolino, P. G. Gucciardi, O. M. Maragò, and G. Cipparrone, “Polarization-dependent optomechanics mediated by chiral microresonators,” Nat. Commun. 5, 3656 (2014).
[Crossref] [PubMed]

Vigderman, L.

Z. Yan, M. Pelton, L. Vigderman, E. R. Zubarev, and N. F. Scherer, “Why single-beam optical tweezers trap gold nanowires in three dimensions,” ACS Nano 7(10), 8794–8800 (2013).
[Crossref] [PubMed]

Volpe, G.

G. Volpe and G. Volpe, “Simulation of a Brownian particle in an optical trap,” Am. J. Phys. 81(3), 224–230 (2013).
[Crossref]

G. Volpe and G. Volpe, “Simulation of a Brownian particle in an optical trap,” Am. J. Phys. 81(3), 224–230 (2013).
[Crossref]

O. M. Maragò, P. H. Jones, P. G. Gucciardi, G. Volpe, and A. C. Ferrari, “Optical trapping and manipulation of nanostructures,” Nat. Nanotechnol. 8(11), 807–819 (2013).
[Crossref] [PubMed]

G. Volpe and D. Petrov, “Torque Detection using Brownian Fluctuations,” Phys. Rev. Lett. 97(21), 210603 (2006).
[Crossref] [PubMed]

Wannemacher, R.

A. Pack, M. Hietschold, and R. Wannemacher, “Failure of local Mie theory: optical spectra of colloidal aggregates,” Opt. Commun. 194(4-6), 277–287 (2001).
[Crossref]

Weber-Bargioni, A.

A. McLeod, A. Weber-Bargioni, Z. Zhang, S. Dhuey, B. Harteneck, J. B. Neaton, S. Cabrini, and P. J. Schuck, “Nonperturbative Visualization of Nanoscale Plasmonic Field Distributions via Photon Localization Microscopy,” Phys. Rev. Lett. 106(3), 037402 (2011).
[Crossref] [PubMed]

Wiley, B. J.

B. J. Wiley, S. H. Im, Z. Y. Li, J. McLellan, A. Siekkinen, and Y. Xia, “Maneuvering the surface plasmon resonance of silver nanostructures through shape-controlled synthesis,” J. Phys. Chem. B 110(32), 15666–15675 (2006).
[Crossref] [PubMed]

Xia, Y.

B. J. Wiley, S. H. Im, Z. Y. Li, J. McLellan, A. Siekkinen, and Y. Xia, “Maneuvering the surface plasmon resonance of silver nanostructures through shape-controlled synthesis,” J. Phys. Chem. B 110(32), 15666–15675 (2006).
[Crossref] [PubMed]

Xiao, G.

G. Xiao and S. Man, “Surface-enhanced Raman scattering of methylene blue adsorbed on cap-shaped silver nanoparticles,” Chem. Phys. Lett. 447(4–6), 305–309 (2007).
[Crossref]

Xiong, W.

W. Xiong, R. Mazid, L. W. Yap, X. Li, and W. Cheng, “Plasmonic caged gold nanorods for near-infrared light controlled drug delivery,” Nanoscale 6(23), 14388–14393 (2014).
[Crossref] [PubMed]

Xu, H.

F. Svedberg, Z. Li, H. Xu, and M. Käll, “Creating hot nanoparticle pairs for surface-enhanced raman spectroscopy through optical manipulation,” Nano Lett. 6(12), 2639–2641 (2006).
[Crossref] [PubMed]

Yan, Z.

Z. Yan, M. Pelton, L. Vigderman, E. R. Zubarev, and N. F. Scherer, “Why single-beam optical tweezers trap gold nanowires in three dimensions,” ACS Nano 7(10), 8794–8800 (2013).
[Crossref] [PubMed]

Z. Yan, J. E. Jureller, J. Sweet, M. J. Guffey, M. Pelton, and N. F. Scherer, “Three-Dimensional Optical Trapping and Manipulation of Single Silver Nanowires,” Nano Lett. 12(10), 5155–5161 (2012).
[Crossref] [PubMed]

Yap, L. W.

W. Xiong, R. Mazid, L. W. Yap, X. Li, and W. Cheng, “Plasmonic caged gold nanorods for near-infrared light controlled drug delivery,” Nanoscale 6(23), 14388–14393 (2014).
[Crossref] [PubMed]

Zhang, J. Z.

J. Z. Zhang and C. Noguez, “Plasmonic optical properties and applications of metal nanostructures,” Plasmonics 3(4), 127–150 (2008).
[Crossref]

Zhang, Z.

A. McLeod, A. Weber-Bargioni, Z. Zhang, S. Dhuey, B. Harteneck, J. B. Neaton, S. Cabrini, and P. J. Schuck, “Nonperturbative Visualization of Nanoscale Plasmonic Field Distributions via Photon Localization Microscopy,” Phys. Rev. Lett. 106(3), 037402 (2011).
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Zhao, L. L.

K. L. Kelly, E. Coronado, L. L. Zhao, and G. C. Schatz, “The optical properties of metal nanoparticles: the influence of size, shape, and dielectric environment,” J. Phys. Chem. B 107(3), 668–677 (2003).
[Crossref]

Zins, I.

C. Selhuber-Unkel, I. Zins, O. Schubert, C. Sönnichsen, and L. B. Oddershede, “Quantitative optical trapping of single gold nanorods,” Nano Lett. 8(9), 2998–3003 (2008).
[Crossref] [PubMed]

Zubarev, E. R.

Z. Yan, M. Pelton, L. Vigderman, E. R. Zubarev, and N. F. Scherer, “Why single-beam optical tweezers trap gold nanowires in three dimensions,” ACS Nano 7(10), 8794–8800 (2013).
[Crossref] [PubMed]

ACS Nano (5)

C. D’Andrea, J. Bochterle, A. Toma, C. Huck, F. Neubrech, E. Messina, B. Fazio, O. M. Maragò, E. Di Fabrizio, M. Lamy de La Chapelle, P. G. Gucciardi, and A. Pucci, “Optical Nanoantennas for Multiband surface-enhanced infrared and Raman spectroscopy,” ACS Nano 7(4), 3522–3531 (2013).
[Crossref] [PubMed]

Z. Yan, M. Pelton, L. Vigderman, E. R. Zubarev, and N. F. Scherer, “Why single-beam optical tweezers trap gold nanowires in three dimensions,” ACS Nano 7(10), 8794–8800 (2013).
[Crossref] [PubMed]

E. Messina, E. Cavallaro, A. Cacciola, M. A. Iatì, P. G. Gucciardi, F. Borghese, P. Denti, R. Saija, G. Compagnini, M. Meneghetti, V. Amendola, and O. M. Maragò, “Plasmon-Enhanced Optical Trapping of Gold Nanoaggregates with Selected Optical Properties,” ACS Nano 5(2), 905–913 (2011).
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O. M. Maragó, F. Bonaccorso, R. Saija, G. Privitera, P. G. Gucciardi, M. A. Iatì, G. Calogero, P. H. Jones, F. Borghese, P. Denti, V. Nicolosi, and A. C. Ferrari, “Brownian Motion of Graphene,” ACS Nano 4(12), 7515–7523 (2010).
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P. H. Jones, F. Palmisano, F. Bonaccorso, P. G. Gucciardi, G. Calogero, A. C. Ferrari, and O. M. Maragó, “Rotation detection in light-driven nanorotors,” ACS Nano 3(10), 3077–3084 (2009).
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G. Compagnini, E. Messina, O. Puglisi, and V. Nicolosi, “Synthesis of Au/Ag colloidal nano-alloys: exploring the optical properties for an accurate analysis,” Appl. Surf. Sci. 254(4), 1007–1011 (2007).
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Chem. Phys. Lett. (1)

G. Xiao and S. Man, “Surface-enhanced Raman scattering of methylene blue adsorbed on cap-shaped silver nanoparticles,” Chem. Phys. Lett. 447(4–6), 305–309 (2007).
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B. J. Wiley, S. H. Im, Z. Y. Li, J. McLellan, A. Siekkinen, and Y. Xia, “Maneuvering the surface plasmon resonance of silver nanostructures through shape-controlled synthesis,” J. Phys. Chem. B 110(32), 15666–15675 (2006).
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J. Phys. Chem. C (2)

E. Messina, E. Cavallaro, A. Cacciola, R. Saija, F. Borghese, P. Denti, B. Fazio, C. D’Andrea, P. G. Gucciardi, M. A. Iatì, M. Meneghetti, G. Compagnini, V. Amendola, and O. M. Maragò, “Manipulation and Raman Spectroscopy with Optically Trapped Metal Nanoparticles Obtained by Pulsed Laser Ablation in Liquids,” J. Phys. Chem. C 115(12), 5115–5122 (2011).
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C. D’Andrea, B. Fazio, P. G. Gucciardi, M. C. Giordano, C. Martella, D. Chiappe, A. Toma, F. Buatier de Mongeot, F. Tantussi, P. Vasanthakumar, F. Fuso, and M. Allegrini, “SERS enhancement and field confinement in nanosensors based on self-organizad gold nanowires produced by Ion-Beam sputtering,” J. Phys. Chem. C 118(16), 8571–8580 (2014).
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J. Quant. Spectros. Ra. (3)

S. H. Simpson, “Inhomogeneous and anisotropic particles in optical traps: physical behaviour and applications,” J. Quant. Spectros. Ra. 146, 81–99 (2014).
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F. Svedberg, Z. Li, H. Xu, and M. Käll, “Creating hot nanoparticle pairs for surface-enhanced raman spectroscopy through optical manipulation,” Nano Lett. 6(12), 2639–2641 (2006).
[Crossref] [PubMed]

Z. Yan, J. E. Jureller, J. Sweet, M. J. Guffey, M. Pelton, and N. F. Scherer, “Three-Dimensional Optical Trapping and Manipulation of Single Silver Nanowires,” Nano Lett. 12(10), 5155–5161 (2012).
[Crossref] [PubMed]

C. Selhuber-Unkel, I. Zins, O. Schubert, C. Sönnichsen, and L. B. Oddershede, “Quantitative optical trapping of single gold nanorods,” Nano Lett. 8(9), 2998–3003 (2008).
[Crossref] [PubMed]

L. Tong, V. D. Miljković, and M. Käll, “Alignment, Rotation, and Spinning of Single Plasmonic Nanoparticles and Nanowires Using Polarization Dependent Optical Forces,” Nano Lett. 10(1), 268–273 (2010).
[Crossref] [PubMed]

Nanoscale (3)

I. Urries, C. Muñoz, L. Gomez, C. Marquina, V. Sebastian, M. Arruebo, and J. Santamaria, “Magneto-plasmonic nanoparticles as theranostic platforms for magnetic resonance imaging, drug delivery and NIR hyperthermia applications,” Nanoscale 6(15), 9230–9240 (2014).
[Crossref] [PubMed]

W. Xiong, R. Mazid, L. W. Yap, X. Li, and W. Cheng, “Plasmonic caged gold nanorods for near-infrared light controlled drug delivery,” Nanoscale 6(23), 14388–14393 (2014).
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Nat. Commun. (1)

M. G. Donato, J. Hernandez, A. Mazzulla, C. Provenzano, R. Saija, R. Sayed, S. Vasi, A. Magazzù, P. Pagliusi, R. Bartolino, P. G. Gucciardi, O. M. Maragò, and G. Cipparrone, “Polarization-dependent optomechanics mediated by chiral microresonators,” Nat. Commun. 5, 3656 (2014).
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Nat. Nanotechnol. (1)

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Opt. Lett. (4)

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S. H. Simpson, D. C. Benito, and S. Hanna, “Polarization-induced torque in optical traps,” Phys. Rev. A 76(4), 043408 (2007).
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A. McLeod, A. Weber-Bargioni, Z. Zhang, S. Dhuey, B. Harteneck, J. B. Neaton, S. Cabrini, and P. J. Schuck, “Nonperturbative Visualization of Nanoscale Plasmonic Field Distributions via Photon Localization Microscopy,” Phys. Rev. Lett. 106(3), 037402 (2011).
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Plasmonics (2)

J. Z. Zhang and C. Noguez, “Plasmonic optical properties and applications of metal nanostructures,” Plasmonics 3(4), 127–150 (2008).
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V. Amendola, O. M. Bakr, and F. Stellacci, “A study of the surface plasmon resonance of silver nanoparticles by the discrete dipole approximation method: effect of shape, size, structure and assembly,” Plasmonics 5(1), 85–97 (2010).
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Figures (4)

Fig. 1
Fig. 1 (a) Image showing the color range of samples studied in this work. (b) Exemplar SEM micrograph of sample 3. The 2D character of the Ag nanoparticles is visible in the inset. (c) Extinction spectra of the different samples in solution. The plasmonic bands centers and their assignations are also indicated: QP – out, out-of-plane quadrupole mode; DP – out, out-of-plane dipole mode; DP – in, in-plane dipole mode. Data are shifted vertically for clarity.
Fig. 2
Fig. 2 (a) Trap force constants as a function of the reduced parameter (λtrapp)/λp related to the distance of the trapping wavelength, λtrap, from the in-plane dipole resonance wavelength, λp. This is evidence of a frequency scaling of the optical trapping force. Solid lines are a fit to the data with a 1/x scaling. (b) Trap force constants as a function of the platelet diameter (data points). Lines are spring constants obtained in the dipole approximation for an oblate spheroid (solid lines) and by T-matrix calculations on flat clusters of spheres (dashed lines). The thick blue lines are a guide to the eye that represent a different power law scaling for volume (thick dashed), D3, or surface (thick solid), D2. (c) Polarization asymmetry (blue) and trap aspect ratio (red) obtained from measured spring constants (circles) and from calculations based on the dipole approximation of an oblate spheroid (solid line) and from T-matrix calculations on flat clusters of spheres (dashed lines).
Fig. 3
Fig. 3 (a) Cluster model of a silver nanoplatelet. The polarization of the incident field is aligned along x, while the propagation axis is along z. (b) Extinction cross section for the cluster in (a) showing the different plasmonic bands dictated by the flat geometry. (c) Calculation of the optical torque along z, showing that the stable orientation is with the cluster aligned in the xz plane (φ = 0). (d-f) Calculated maps of the field intensity in the focal spot for our experimental parameters (λ0 = 830nm, NA = 1.3).
Fig. 4
Fig. 4 Raman spectra of a drop-cast 10−4 M methylene blue (MB) aqueous solution on a gold flat substrate (blue) and on Ag nanoplatelets (red). The assignment of the most representative peaks [64] is also indicated. A SERS enhancement of three order of magnitude is observed.

Tables (1)

Tables Icon

Table 1 Diameter of the nanoplatelets studied in this work. The postion of the in-plane dipolar plasmon resonance band is also indicted.

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

d dt x i ( t )= ω i x i ( t )+ ξ i ( t ) i=x,y,z ,
d dt x( t )= k x γ x( t )+ ξ x ( t ) , d dt y( t )= k y γ || y( t )+ ξ y ( t ) , d dt z( t )= k z γ z( t )+ ξ z ( t ) .
< C ii (τ)>=< x i ( t ) x i ( t+τ )>
C ii ( τ )= C ii ( 0 ) e ω i τ .
k ρ = 2 α d I 0 c ε 0 n m w 0 2 ,
F Rad = r 2 Ω r ^ T M dΩ
Γ Rad = r 3 Ω r ^ T M × r ^ dΩ ,

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