Amphibious Transport of Fluids and Solids by Soft Magnetic Carpets

Ahmet F. Demirörs; Sümeyye Aykut; Sophia Ganzeboom; Yuki A. Meier; Robert Hardeman; Joost de Graaf; Arnold J.T.M. Mathijssen; Erik Poloni; Julia A. Carpenter; Caner Ünlü; Daniel Zenhäusern

doi:10.1002/advs.202102510

Amphibious Transport of Fluids and Solids by Soft Magnetic Carpets

Ahmet F. Demirörs^*, Sümeyye Aykut, Sophia Ganzeboom, Yuki A. Meier, Robert Hardeman, Joost de Graaf, Arnold J.T.M. Mathijssen, Erik Poloni, Julia A. Carpenter, Caner Ünlü, Daniel Zenhäusern

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

One of the major challenges in modern robotics is controlling micromanipulation by active and adaptive materials. In the respiratory system, such actuation enables pathogen clearance by means of motile cilia. While various types of artificial cilia have been engineered recently, they often involve complex manufacturing protocols and focus on transporting liquids only. Here, soft magnetic carpets are created via an easy self-assembly route based on the Rosensweig instability. These carpets can transport not only liquids but also solid objects that are larger and heavier than the artificial cilia, using a crowd-surfing effect.This amphibious transportation is locally and reconfigurably tunable by simple micromagnets or advanced programmable magnetic fields with a high degree of spatial resolution. Two surprising cargo reversal effects are identified and modeled due to collective ciliary motion and nontrivial elastohydrodynamics. While the active carpets are generally applicable to integrated control systems for transport, mixing, and sorting, these effects can also be exploited for microfluidic viscosimetry and elastometry.

Original language	English
Article number	2102510
Journal	Advanced Science
Volume	8
Issue number	21
DOIs	https://doi.org/10.1002/advs.202102510
Publication status	Published - 3 Nov 2021

Bibliographical note

Publisher Copyright:
© 2021 The Authors. Advanced Science published by Wiley-VCH GmbH

Funding

The authors are much thankful to Prof. André R. Studart, ETH Zurich for the support and discussions. The authors also thank the cleanroom facility FIRST at ETH Zurich for instrumental support. This research was supported by the Swiss National Science Foundation through the National Centre of Competence in Research Bio-Inspired Materials (grant number: 51NF40_182881). J.d.G. thanks NWO for funding through Start-Up Grant 740.018.013 and through association with the EU-FET project NANOPHLOW (766972) within Horizon 2020. A.J.T.M.M. acknowledges funding from the United States Department of Agriculture (USDA-NIFA AFRI Grants No. 2020-67017-30776 and 2020-67015-32330). The authors are much thankful to Prof. André R. Studart, ETH Zurich for the support and discussions. The authors also thank the cleanroom facility FIRST at ETH Zurich for instrumental support. This research was supported by the Swiss National Science Foundation through the National Centre of Competence in Research Bio‐Inspired Materials (grant number: 51NF40_182881). J.d.G. thanks NWO for funding through Start‐Up Grant 740.018.013 and through association with the EU‐FET project NANOPHLOW (766972) within Horizon 2020. A.J.T.M.M. acknowledges funding from the United States Department of Agriculture (USDA‐NIFA AFRI Grants No. 2020‐67017‐30776 and 2020‐67015‐32330).

Funders	Funder number
EU-FET
USDA-NIFA AFRI
USDA‐NIFA AFRI	2020‐67017‐30776, 2020‐67015‐32330
U.S. Department of Agriculture
Horizon 2020 Framework Programme	766972
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Eidgenössische Technische Hochschule Zürich
Nederlandse Organisatie voor Wetenschappelijk Onderzoek	740.018.013
Horizon 2020
National Center of Competence in Research Bio-Inspired Materials, University of Fribourg	51NF40_182881

Keywords

artificial cilia
fluid dynamics
magnetic fields
self assembly
soft robots

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/advs.202102510

Cite this

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abstract = "One of the major challenges in modern robotics is controlling micromanipulation by active and adaptive materials. In the respiratory system, such actuation enables pathogen clearance by means of motile cilia. While various types of artificial cilia have been engineered recently, they often involve complex manufacturing protocols and focus on transporting liquids only. Here, soft magnetic carpets are created via an easy self-assembly route based on the Rosensweig instability. These carpets can transport not only liquids but also solid objects that are larger and heavier than the artificial cilia, using a crowd-surfing effect.This amphibious transportation is locally and reconfigurably tunable by simple micromagnets or advanced programmable magnetic fields with a high degree of spatial resolution. Two surprising cargo reversal effects are identified and modeled due to collective ciliary motion and nontrivial elastohydrodynamics. While the active carpets are generally applicable to integrated control systems for transport, mixing, and sorting, these effects can also be exploited for microfluidic viscosimetry and elastometry.",

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AU - Mathijssen, Arnold J.T.M.

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Amphibious Transport of Fluids and Solids by Soft Magnetic Carpets

Abstract

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Keywords

UN SDGs

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