Postrecording Pixel-Reconstruction Approach for Correcting the Lateral Drifts in Surface Plasmon Resonance Microscope

Gao, Jia; Wo, Xiang; Wang, Yongjie; Li, Minghe; Zhou, Chunyuan; Wang, Wei

doi:10.1021/acs.analchem.9b02804

Cited by 10 publications

(7 citation statements)

References 44 publications

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“…Plotting the location of the SNPs in a time sequence yields their trajectory during the sublimation process (Figure d). Note that the drift of the optical imaging system has been precorrected using a post-recording pixel reconstruction approach that we previously developed . Moreover, adjacent individuals in the same field of view exhibited rather different trajectories, thus excluding the influence of environmental disturbance such as drift of stage (Figure S6).…”

Section: Resultsmentioning

confidence: 99%

Spontaneous Takeoff of Single Sulfur Nanoparticles during Sublimation Studied by Dark-Field Microscopy

Liu

Fang

et al. 2023

J. Am. Chem. Soc.

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The Leidenfrost effect describes a fascinating phenomenon in which a liquid droplet, when deposited onto a very hot substrate, will levitate on its own vapor layer and undergo frictionless movements. Driven by the significant implications for heat transfer engineering and drag reduction, intensive efforts have been made to understand, manipulate, and utilize the Leidenfrost effect on macrosized objects with a typical size of millimeters. The Leidenfrost effect of nanosized objects, however, remains unexplored. Herein, we report on an unprecedented Leidenfrost effect of single nanosized sulfur particles at room temperature. It was discovered when advanced dark-field optical microscopy was employed to monitor the dynamic sublimation process of single sulfur nanoparticles sitting on a flat substrate. Despite the phenomenological similarity, including the vapor-cushion-induced levitation and the extended lifetime, the Leidenfrost effect at the nanoscale exhibited two extraordinary features that were obviously distinct from its macroscopic counterpart. First, there was a critical size below which single sulfur nanoparticles began to levitate. Second, levitation occurred in the absence of the temperature difference between the nanoparticle and the substrate, which was barely possible for macroscopic objects and underscored the value of bridging the gap connecting the Leidenfrost effect and nanoscience. The sublimation-triggered spontaneous takeoff of single sulfur nanoparticles shed new light on its further applications, such as nanoflight.

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Section: Resultsmentioning

confidence: 99%

Spontaneous Takeoff of Single Sulfur Nanoparticles during Sublimation Studied by Dark-Field Microscopy

Liu

Fang

et al. 2023

J. Am. Chem. Soc.

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“…Two beams of perpendicular incident light with the same wavelength are used for SPR imaging, leading to two perpendicular SPR patterns of the same nanobubble in one image. A cross-correlation method is subsequently adopted to calculate the localization of nanobubble. , Unlike 2D Gaussian fitting, cross-correlation depends on the correlation coefficient (similarity) of the images, which is particularly suitable for irregular patterns . Representative correlation images of the conventional one-beam and dual-beam SPR patterns are displayed in Figure .…”

Section: Resultsmentioning

confidence: 99%

A Bubble-STORM Approach for Super-Resolved Imaging of Nucleation Sites in Hydrogen Evolution Reactions

Wang

Yuan

et al. 2020

ACS Sens.

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Stochastic optical reconstruction microscopy (STORM) is a powerful strategy to achieve super-resolved imaging of biological structures by virtue of the stochastic photoactivation of fluorophores and superlocalization algorithm. Herein, we report a fluorophore-free bubble-STORM approach for super-resolved imaging of nucleation sites in hydrogen evolution reactions (HER). When applying an appropriate pulse potential to the electrode, rapid electro-reduction of protons created a local oversaturation of hydrogen molecules and thus the nucleation of sparsely distributed hydrogen nanobubbles. A surface plasmon resonance microscopy was employed to monitor the process and report the localization of each nanobubble via superlocalization fitting. The withdrawal of electrode potential, or the microconvection, led to the immediate disappearance of nanobubbles and recovered the electrode surface before the next pulse. By repeating the procedures for thousands of cycles, one was able to reconstruct a map of nucleation sites with a spatial resolution beyond the optical diffraction limit. This approach does not require a model fluorogenic reaction or fluorescent labeling to the nanobubbles, thus revealing the intrinsic nucleation sites in the natural states. Our results further indicated the fast growth, coalescence, and detachment behaviors of nanobubbles on a time scale of sub-milliseconds, underscoring the significance of high temporal resolution for studying nanobubble nucleation.

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“…The collision process of AuNPs was monitored in real time with the trackMate plugin in ImageJ commercial software. Since low-frequency noise due to optical background has an influence on the reconstructed images, the background was removed by using a medium-value algorithm, 23 or subtracting the first frame.…”

Section: ■ Introductionmentioning

confidence: 99%

High-Resolution, High-Throughput Plasmonic Imaging of Nanomaterials

Wan

Qian

et al. 2023

Anal. Chem.

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Label-free imaging of nanoscale targets with intrinsic properties is crucial for chemistry, physics, and life science to unveil the underlying mechanisms. Plasmonic imaging techniques are particularly attractive because they allow real-time imaging, providing insights into nanoscale detection and nanocatalysis. Here, we present a high-resolution plasmonic imaging method that is capable of imaging nanomaterials with high morphological fidelity and high throughput. We demonstrate that this approach allows for high-resolution plasmonic imaging of various nanomaterials ranging from nanoparticles and nanowires to two-dimensional nanomaterials and accurate tracking of the interfacial dynamics of nanoparticles. Given the experimental simplicity and capacity for label-free and real-time imaging of nanomaterials with high spatial resolution and high throughput, this approach can serve as a promising platform for characterizing nanomaterials at the single-particle level.

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Postrecording Pixel-Reconstruction Approach for Correcting the Lateral Drifts in Surface Plasmon Resonance Microscope

Cited by 10 publications

References 44 publications

Spontaneous Takeoff of Single Sulfur Nanoparticles during Sublimation Studied by Dark-Field Microscopy

Spontaneous Takeoff of Single Sulfur Nanoparticles during Sublimation Studied by Dark-Field Microscopy

A Bubble-STORM Approach for Super-Resolved Imaging of Nucleation Sites in Hydrogen Evolution Reactions

High-Resolution, High-Throughput Plasmonic Imaging of Nanomaterials

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