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Issue 113, 2015
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Scaling of optical forces on Au–PEG core–shell nanoparticles

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Abstract

Optical trapping of hybrid core–shell gold–polymer particles is studied. Optical forces are measured for different gold core size and polymer shell thickness, revealing how a polymer shell increases the trapping efficiency with respect to the bare gold nanoparticles. Data are in agreement with calculations of optical trapping based on electromagnetic scattering theory in the T-matrix approach. The scaling behaviour of optical forces with respect to the ratio between polymer layer thickness and the whole particle radius is found and discussed.

Graphical abstract: Scaling of optical forces on Au–PEG core–shell nanoparticles

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Publication details

The article was received on 09 Oct 2015, accepted on 23 Oct 2015 and first published on 26 Oct 2015


Article type: Paper
DOI: 10.1039/C5RA20922F
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2015,5, 93139-93146
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    Scaling of optical forces on Au–PEG core–shell nanoparticles

    D. Spadaro, M. A. Iatì, M. G. Donato, P. G. Gucciardi, R. Saija, A. R. Cherlakola, S. Scaramuzza, V. Amendola and O. M. Maragò, RSC Adv., 2015, 5, 93139
    DOI: 10.1039/C5RA20922F

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