Depolarized scattering of silver nanostructures in dye-less sensing

Pabak Sarkar, Tanya Shtoyko, Rafal Luchowski, Nils Calander, Aby Roth, Anne Marie Brun-Zinkernagel, Zygmunt Gryczynski, Ignacy Gryczynski

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

Scattering from noble metallic nanoparticles with specific structures are strongly depolarized in contrast to dielectric particles. The effect depends on the shape and symmetry of the nanoparticles and can be explained by induced plasmonic multi-resonances along different axes of symmetry. In our experiments we found that the scattering from 'nanorod' structures of silver is more polarized than globular colloidal silver nanostructures. The depolarized scattering can be tuned to the near-infrared region by using proportionate mixture of the colloids and nanorods. We demonstrate this effect in solution as well as in polymer films where nanoparticles were immobilized. This phenomenon of depolarized scattering is promising for designing dye-less sensing devices useful in diagnostics. We show scattering polarization profile from asymmetric nanostructures changes during their aggregation. Modulating the rate of aggregation of these nanostructures by 'receptor - ligand'-like interactions can be successfully utilized for sensitive 'dye-less' diagnostics.

Original languageEnglish
Title of host publicationNanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII
Volume7574
DOIs
StatePublished - 3 May 2010
EventNanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII - San Francisco, CA, United States
Duration: 25 Jan 201028 Jan 2010

Other

OtherNanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII
CountryUnited States
CitySan Francisco, CA
Period25/01/1028/01/10

Fingerprint

Nanostructures
Silver
Nanotubes
Coloring Agents
Dyes
dyes
silver
Scattering
Nanoparticles
Receptor Aggregation
scattering
Metal Nanoparticles
Nanorods
nanoparticles
nanorods
Colloids
Agglomeration
Polymers
Ligands
symmetry

Keywords

  • Nanostructures
  • Polarization
  • Size-aspect ratio

Cite this

Sarkar, P., Shtoyko, T., Luchowski, R., Calander, N., Roth, A., Brun-Zinkernagel, A. M., ... Gryczynski, I. (2010). Depolarized scattering of silver nanostructures in dye-less sensing. In Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII (Vol. 7574). [75740V] https://doi.org/10.1117/12.841392
Sarkar, Pabak ; Shtoyko, Tanya ; Luchowski, Rafal ; Calander, Nils ; Roth, Aby ; Brun-Zinkernagel, Anne Marie ; Gryczynski, Zygmunt ; Gryczynski, Ignacy. / Depolarized scattering of silver nanostructures in dye-less sensing. Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII. Vol. 7574 2010.
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abstract = "Scattering from noble metallic nanoparticles with specific structures are strongly depolarized in contrast to dielectric particles. The effect depends on the shape and symmetry of the nanoparticles and can be explained by induced plasmonic multi-resonances along different axes of symmetry. In our experiments we found that the scattering from 'nanorod' structures of silver is more polarized than globular colloidal silver nanostructures. The depolarized scattering can be tuned to the near-infrared region by using proportionate mixture of the colloids and nanorods. We demonstrate this effect in solution as well as in polymer films where nanoparticles were immobilized. This phenomenon of depolarized scattering is promising for designing dye-less sensing devices useful in diagnostics. We show scattering polarization profile from asymmetric nanostructures changes during their aggregation. Modulating the rate of aggregation of these nanostructures by 'receptor - ligand'-like interactions can be successfully utilized for sensitive 'dye-less' diagnostics.",
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Sarkar, P, Shtoyko, T, Luchowski, R, Calander, N, Roth, A, Brun-Zinkernagel, AM, Gryczynski, Z & Gryczynski, I 2010, Depolarized scattering of silver nanostructures in dye-less sensing. in Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII. vol. 7574, 75740V, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII, San Francisco, CA, United States, 25/01/10. https://doi.org/10.1117/12.841392

Depolarized scattering of silver nanostructures in dye-less sensing. / Sarkar, Pabak; Shtoyko, Tanya; Luchowski, Rafal; Calander, Nils; Roth, Aby; Brun-Zinkernagel, Anne Marie; Gryczynski, Zygmunt; Gryczynski, Ignacy.

Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII. Vol. 7574 2010. 75740V.

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

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AU - Sarkar, Pabak

AU - Shtoyko, Tanya

AU - Luchowski, Rafal

AU - Calander, Nils

AU - Roth, Aby

AU - Brun-Zinkernagel, Anne Marie

AU - Gryczynski, Zygmunt

AU - Gryczynski, Ignacy

PY - 2010/5/3

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N2 - Scattering from noble metallic nanoparticles with specific structures are strongly depolarized in contrast to dielectric particles. The effect depends on the shape and symmetry of the nanoparticles and can be explained by induced plasmonic multi-resonances along different axes of symmetry. In our experiments we found that the scattering from 'nanorod' structures of silver is more polarized than globular colloidal silver nanostructures. The depolarized scattering can be tuned to the near-infrared region by using proportionate mixture of the colloids and nanorods. We demonstrate this effect in solution as well as in polymer films where nanoparticles were immobilized. This phenomenon of depolarized scattering is promising for designing dye-less sensing devices useful in diagnostics. We show scattering polarization profile from asymmetric nanostructures changes during their aggregation. Modulating the rate of aggregation of these nanostructures by 'receptor - ligand'-like interactions can be successfully utilized for sensitive 'dye-less' diagnostics.

AB - Scattering from noble metallic nanoparticles with specific structures are strongly depolarized in contrast to dielectric particles. The effect depends on the shape and symmetry of the nanoparticles and can be explained by induced plasmonic multi-resonances along different axes of symmetry. In our experiments we found that the scattering from 'nanorod' structures of silver is more polarized than globular colloidal silver nanostructures. The depolarized scattering can be tuned to the near-infrared region by using proportionate mixture of the colloids and nanorods. We demonstrate this effect in solution as well as in polymer films where nanoparticles were immobilized. This phenomenon of depolarized scattering is promising for designing dye-less sensing devices useful in diagnostics. We show scattering polarization profile from asymmetric nanostructures changes during their aggregation. Modulating the rate of aggregation of these nanostructures by 'receptor - ligand'-like interactions can be successfully utilized for sensitive 'dye-less' diagnostics.

KW - Nanostructures

KW - Polarization

KW - Size-aspect ratio

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Sarkar P, Shtoyko T, Luchowski R, Calander N, Roth A, Brun-Zinkernagel AM et al. Depolarized scattering of silver nanostructures in dye-less sensing. In Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications VII. Vol. 7574. 2010. 75740V https://doi.org/10.1117/12.841392