Dark field nanoparticle tracking analysis for size characterization of plasmonic and non-plasmonic particles

Wagner, Tobias; Lipinski, Hans‐Gerd; Wiemann, Martin

doi:10.1007/s11051-014-2419-x

Cited by 58 publications

(57 citation statements)

References 25 publications

(33 reference statements)

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“…The bright-field approach provides much higher light throughput for dynamic imaging at the millisecond timescale compared to dark-field microscopy that suffers low light throughput. We have demonstrated that PANORAMA can size single nanoparticle down to 25 nm which exceeds the 100 nm dielectric particle detection limit achieved via dark-field microscopy 3 , dynamically monitor single nanoparticle approaching the plasmonic surface, and count individual nanoparticles in a cluster. PANORAMA would provide new capabilities in label-free imaging and single nanoparticle analysis.…”

Section: Discussionmentioning

confidence: 94%

Plasmonic nano-aperture label-free imaging (PANORAMA)

et al. 2020

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Label-free optical imaging of nanoscale objects faces fundamental challenges. Techniques based on propagating surface plasmon resonance (SPR) and localized surface plasmon resonance (LSPR) have shown promises. However, challenges remain to achieve diffraction-limited resolution and better surface localization in SPR imaging. LSPR imaging with dark-field microscopy on metallic nanostructures suffers from low light throughput and insufficient imaging capacity. Here we show ultra-near-field index modulated PlAsmonic NanO-apeRture lAbel-free iMAging (PANORAMA) which uniquely relies on unscattered light to detect sub-100 nm dielectric nanoparticles. PANORAMA provides diffraction-limited resolution, higher surface sensitivity, and wide-field imaging with dense spatial sampling. Its system is identical to a standard bright-field microscope with a lamp and a camera – no laser or interferometry is needed. In a parallel fashion, PANORAMA can detect, count and size individual dielectric nanoparticles beyond 25 nm, and dynamically monitor their distance to the plasmonic surface at millisecond timescale.

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Section: Discussionmentioning

confidence: 94%

Plasmonic nano-aperture label-free imaging (PANORAMA)

et al. 2020

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“…Even if its use seems to be justified, no real influence is observed, and it can be explained by the localization error of the setup. Referring to the experimental data for 250 nm radius beads, the maximum displacement

observed is 1.14

m, while the theory [ 35 ] gives:

…”

Section: Results and Discussionmentioning

confidence: 99%

Single-Particle Tracking with Scanning Non-Linear Microscopy

et al. 2020

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This study describes the adaptation of non-linear microscopy for single-particle tracking (SPT), a method commonly used in biology with single-photon fluorescence. Imaging moving objects with non-linear microscopy raises difficulties due to the scanning process of the acquisitions. The interest of the study is based on the balance between all the experimental parameters (objective, resolution, frame rate) which need to be optimized to record long trajectories with the best accuracy and frame rate. To evaluate the performance of the setup for SPT, several basic estimation methods are used and adapted to the new detection process. The covariance-based estimator (CVE) seems to be the best way to evaluate the diffusion coefficient from trajectories using the specific factors of motion blur and localization error.

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“…Dark field microscope images also confirm the size increase of NPs. The color change in Figure (from green to yellow) indicates the growth of NPs …”

Section: Resultsmentioning

confidence: 99%

Structuring of Surfaces with Gold Nanoparticles by Using Bessel‐Like Beams

et al. 2017

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Here, the structuring of surfaces with gold nanoparticles by using Bessel-like beam array is demonstrated. The experimental results show that the fabricated microring structures containing gold nanoparticles have a surface plasmon resonance in the spectral range of 520-540 nm, which can be tuned by selecting the laser treatment parameters. Fabricated microring structures exhibit a lower light transmittance comparing with the randomly distributed gold nanoparticles for wavelengths 500-570 nm due to the growth in the size of nanoparticles. In the spectral range of 600-700 nm, the light transmittance through microring structures is higher compared with the randomly distributed gold nanoparticles because of the removal of gold nanoparticles as gold has high reflectivity for wavelengths longer than 600 nm. The demonstrated method enables an easy fabrication of microring structures having tunable plasmonic properties.E. Stankevičius and M. Garliauskas acknowledge to the Lithuanian Research Council for the financial support of the joint Lithuanian-Belarus project in science and technology "Generation of nanoparticles by laserbased methods and formation of structures consisting of nanoparticles by laser" No. S-LB-

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Dark field nanoparticle tracking analysis for size characterization of plasmonic and non-plasmonic particles

Cited by 58 publications

References 25 publications

Plasmonic nano-aperture label-free imaging (PANORAMA)

Plasmonic nano-aperture label-free imaging (PANORAMA)

Single-Particle Tracking with Scanning Non-Linear Microscopy

Structuring of Surfaces with Gold Nanoparticles by Using Bessel‐Like Beams

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