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3D nanometer images of biological fibers by directed motion of gold nanoparticles.

ABSTRACT: Using near-infrared femtosecond pulses, we move single gold nanoparticles (AuNPs) along biological fibers, such as collagen and actin filaments. While the AuNP is sliding on the fiber, its trajectory is measured in three dimensions (3D) with nanometer resolution providing a high-resolution image of the fiber. Here, we systematically moved a single AuNP along nanometer-size collagen fibers and actin filament inside chinese hamster ovary K1 living cells, mapping their 3D topography with high fidelity.

SUBMITTER: Estrada LC

PROVIDER: S-EPMC3220937 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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3D nanometer images of biological fibers by directed motion of gold nanoparticles.

Estrada Laura C LC Gratton Enrico E

Nano letters 20110930 11

Using near-infrared femtosecond pulses, we move single gold nanoparticles (AuNPs) along biological fibers, such as collagen and actin filaments. While the AuNP is sliding on the fiber, its trajectory is measured in three dimensions (3D) with nanometer resolution providing a high-resolution image of the fiber. Here, we systematically moved a single AuNP along nanometer-size collagen fibers and actin filament inside chinese hamster ovary K1 living cells, mapping their 3D topography with high fidel ...[more]

PMID: 21919444

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