Evidence map›Paper›PMID 34753910›Full record

ArticleNature communications2021

Ultrasound-activated ciliary bands for microrobotic systems inspired by starfish.

Cornel Dillinger, Nitesh Nama, Daniel Ahmed

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
16.1field-weighted citation impact, top 1% of its field
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

46 citing papers in PubMed, 142 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Reconfigurable Acoustofluidic Microvortices for Selective Microcargo Delivery.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  6. Acoustic shape-morphing micromachines.Nature communications · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. The Morphological, Behavioral, and Transcriptomic Life Cycle of Anthrobots.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  12. Review
  13. Review
  14. Article
  15. Micro- and Nano-Bots for Infection Control.Advanced materials (Deerfield Beach, Fla.) · 2025
    Review
  16. Ultrasound-activated cilia for biofilm control in indwelling medical devices.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  17. Topological acoustofluidics.Nature materials · 2025
    Article
  18. Emerging Wearable Acoustic Sensing Technologies.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  19. Article
  20. Swarm Autonomy: From Agent Functionalization to Machine Intelligence.Advanced materials (Deerfield Beach, Fla.) · 2025
    Review
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

3 authors at 2 institutions in 2 countries.

Cornel DillingerAcoustic Robotics Systems Lab, Institute of Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0002-1734-5713
Nitesh NamaDepartment of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA.
Daniel AhmedAcoustic Robotics Systems Lab, Institute of Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland. dahmed@ethz.ch.ORCID http://orcid.org/0000-0002-0224-5293
ETH Zurich · CHUniversity of Nebraska–Lincoln · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cilia are short, hair-like appendages ubiquitous in various biological systems, which have evolved to manipulate and gather food in liquids at regimes where viscosity dominates inertia. Inspired by these natural systems, synthetic cilia have been developed and utilized in microfluidics and microrobotics to achieve functionalities such as propulsion, liquid pumping and mixing, and particle manipulation. Here, we demonstrate ultrasound-activated synthetic ciliary bands that mimic the natural arrangements of ciliary bands on the surface of starfish larva. Our system leverages nonlinear acoustics at microscales to drive bulk fluid motion via acoustically actuated small-amplitude oscillations of synthetic cilia. By arranging the planar ciliary bands angled towards (+) or away (-) from each other, we achieve bulk fluid motion akin to a flow source or sink. We further combine these flow characteristics with a physical principle to circumvent the scallop theorem and realize acoustic-based propulsion at microscales. Finally, inspired by the feeding mechanism of a starfish larva, we demonstrate an analogous microparticle trap by arranging + and - ciliary bands adjacent to each other.

Indexed as

CiliaStarfishAnimalsBiomimeticsMicrofluidicsViscosity

Identifiers

PMID34753910
PMCPMC8578555
OpenAlexW3211683863

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.