Evidence map›Paper›PMID 33658362›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Anomalous nanoparticle surface diffusion in LCTEM is revealed by deep learning-assisted analysis.

Vida Jamali, Cory Hargus, Assaf Ben-Moshe, Amirali Aghazadeh, Hyun Dong Ha, Kranthi K Mandadapu, A Paul Alivisatos

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Liquid Phase TEM of Diffusing Emulsion Droplets.Small (Weinheim an der Bergstrasse, Germany) · 2026
    Article
  6. Article
  7. Article
  8. Nanopipette dynamic microscopy unveils nano coffee ring.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  9. Article
  10. Article
  11. Near-atomic resolution reconstructions from in situ revitrified cryo samples.Acta crystallographica. Section D, Structural biology · 2023
    Article
  12. Article
  13. Article
  14. Article
  15. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Vida JamaliDepartment of Chemistry, University of California, Berkeley, CA 94720.ORCID 0000-0002-0022-8449
Cory HargusDepartment of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720.ORCID 0000-0002-9087-2472
Assaf Ben-MosheDepartment of Chemistry, University of California, Berkeley, CA 94720.
Amirali AghazadehDepartment of Electrical Engineering and Computer Science, University of California, Berkeley, CA 94720.ORCID 0000-0003-0223-0873
Hyun Dong HaDepartment of Chemistry, University of California, Berkeley, CA 94720.
Kranthi K MandadapuDepartment of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720.
A Paul AlivisatosDepartment of Chemistry, University of California, Berkeley, CA 94720; paul.alivisatos@berkeley.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The motion of nanoparticles near surfaces is of fundamental importance in physics, biology, and chemistry. Liquid cell transmission electron microscopy (LCTEM) is a promising technique for studying motion of nanoparticles with high spatial resolution. Yet, the lack of understanding of how the electron beam of the microscope affects the particle motion has held back advancement in using LCTEM for in situ single nanoparticle and macromolecule tracking at interfaces. Here, we experimentally studied the motion of a model system of gold nanoparticles dispersed in water and moving adjacent to the silicon nitride membrane of a commercial LC in a broad range of electron beam dose rates. We find that the nanoparticles exhibit anomalous diffusive behavior modulated by the electron beam dose rate. We characterized the anomalous diffusion of nanoparticles in LCTEM using a convolutional deep neural-network model and canonical statistical tests. The results demonstrate that the nanoparticle motion is governed by fractional Brownian motion at low dose rates, resembling diffusion in a viscoelastic medium, and continuous-time random walk at high dose rates, resembling diffusion on an energy landscape with pinning sites. Both behaviors can be explained by the presence of silanol molecular species on the surface of the silicon nitride membrane and the ionic species in solution formed by radiolysis of water in presence of the electron beam.

Indexed as

anomalous diffusiondeep neural networkliquid cell electron microscopysingle-particle tracking

Identifiers

PMID33658362
PMCPMC7958372

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.