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Decombe JB, Valdivia-Valero FJ, Dantelle G, et al. Luminescent nanoparticle trapping with far-field optical fiber-tip tweezers. Nanoscale. 2016;8(9):5334-42doi: 10.1039/c5nr07727c.
Decombe, J. B., Valdivia-Valero, F. J., Dantelle, G., Leménager, G., Gacoin, T., Colas des Francs, G., Huant, S., & Fick, J. (2016). Luminescent nanoparticle trapping with far-field optical fiber-tip tweezers. Nanoscale, 8(9), 5334-42. https://doi.org/10.1039/c5nr07727c
Decombe, Jean-Baptiste, et al. "Luminescent nanoparticle trapping with far-field optical fiber-tip tweezers." Nanoscale vol. 8,9 (2016): 5334-42. doi: https://doi.org/10.1039/c5nr07727c
Decombe JB, Valdivia-Valero FJ, Dantelle G, Leménager G, Gacoin T, Colas des Francs G, Huant S, Fick J. Luminescent nanoparticle trapping with far-field optical fiber-tip tweezers. Nanoscale. 2016 Mar 07;8(9):5334-42. doi: 10.1039/c5nr07727c. PMID: 26883602.
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Nanoscale. 2016 Mar 07;8(9):5334-42. doi: 10.1039/c5nr07727c.

Luminescent nanoparticle trapping with far-field optical fiber-tip tweezers.

Nanoscale

Jean-Baptiste Decombe, Francisco J Valdivia-Valero, Géraldine Dantelle, Godefroy Leménager, Thierry Gacoin, Gérard Colas des Francs, Serge Huant, Jochen Fick

Affiliations

  1. Univ. Grenoble Alpes, Inst NEEL, 38000 Grenoble, France. [email protected] and CNRS, Inst NEEL, 38000 Grenoble, France.
  2. Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS-Université Bourgogne Franche-Comté, 21078 Dijon, France.
  3. Physique de la Matière Condensée, CNRS UMR 7643, Ecole Polytechnique, 91128 Palaiseau, France.

PMID: 26883602 DOI: 10.1039/c5nr07727c

Abstract

We report stable and reproducible trapping of luminescent dielectric YAG:Ce(3+) nanoparticles with sizes down to 60 nm using far-field dual fiber tip optical tweezers. The particles are synthesized by a specific glycothermal route followed by an original protected annealing step, resulting in significantly enhanced photostability. The tweezers properties are analyzed by studying the trapped particles residual Brownian motion using video or reflected signal records. The trapping potential is harmonic in the transverse direction to the fiber axis, but reveals interference fringes in the axial direction. Large trapping stiffness of 35 and 2 pN μm(-1) W(-1) is measured for a fiber tip-to-tip distance of 3 μm and 300 nm and 60 nm particles, respectively. The forces acting on the nanoparticles are discussed within the dipolar approximation (gradient and scattering force contributions) or exact calculations using the Maxwell Stress Tensor formalism. Prospects for trapping even smaller particles are discussed.

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