Evidence map›Paper›PMID 38869014›Full record

ArticleACS applied materials & interfaces2024

Hot Fingers: Individually Addressable Graphene-Heater Actuated Liquid Crystal Grippers.

Laura S van Hazendonk, Zafeiris J Khalil, Wilko van Grondelle, Levina E A Wijkhuijs, Ingeborg Schreur-Piet, Michael G Debije, Heiner Friedrich

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in ACS applied materials & interfaces, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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.

Laura S van HazendonkLaboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry Eindhoven University of Technology, P.O. box 513, Eindhoven 5600 MB, The Netherlands.ORCID 0000-0002-3087-7191
Zafeiris J KhalilLaboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry Eindhoven University of Technology, P.O. box 513, Eindhoven 5600 MB, The Netherlands.ORCID 0009-0000-5780-6740
Wilko van GrondelleLaboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry Eindhoven University of Technology, P.O. box 513, Eindhoven 5600 MB, The Netherlands.
Levina E A WijkhuijsLaboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry Eindhoven University of Technology, P.O. box 513, Eindhoven 5600 MB, The Netherlands.
Ingeborg Schreur-PietLaboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry Eindhoven University of Technology, P.O. box 513, Eindhoven 5600 MB, The Netherlands.
Michael G DebijeInstitute for Complex Molecular Systems, Eindhoven University of Technology, P.O. box 513, Eindhoven 5600 MB, The Netherlands.ORCID 0000-0001-8844-1115
Heiner FriedrichLaboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry Eindhoven University of Technology, P.O. box 513, Eindhoven 5600 MB, The Netherlands.ORCID 0000-0003-4582-0064

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Liquid crystal-based actuators are receiving increased attention for their applications in wearables and biomedical or surgical devices, with selective actuation of individual parts/fingers still being in its infancy. This work presents the design and realization of two gripper devices with four individually addressable liquid-crystal network (LCN) actuators thermally driven via printed graphene-based heating elements. The resistive heat causes the all-organic actuator to bend due to anisotropic volume expansions of the splay-aligned sample. A heat transfer model that includes all relevant interfaces is presented and verified via thermal imaging, which provides good estimates of dimensions, power production, and resistance required to reach the desired temperature for actuation while maintaining safe electrical potentials. The LCN films displace up to 11 mm with a bending force of 1.10 mN upon application of 0-15 V potentials. The robustness of the LCN finger is confirmed by repetitive on/off switching for 500 cycles. Actuators are assembled into two prototypes able to grip and lift objects of small weights (70-100 mg) and perform complex actions by individually controlling one of the device's fingers to grip an additional object. Selective actuation of parts in soft robotic devices will enable more complex motions and actions to be performed.

Indexed as

actuatorsdirect ink writinggrapheneliquid crystal networksoft robotics

Identifiers

PMID38869014
PMCPMC11212024

What OpenQuestion holds

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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.