Control of the Folding Dynamics of Self-Reconfiguring Magnetic Microbots Using Liquid Crystallinity
Abstract
Reconfigurable microdevices are being explored in a range of contexts where their life-like abilities to move and change shape are important. While much work has been done to control the motion of these microdevices by engineering their geometry and composition, little is known about their dynamics in complex fluid environments with non-Newtonian rheology. Here in this paper, it is shown how the actuation dynamics of reconfigurable microdevices made by assembly of patchy magnetic microcubes, which are referred to as “microbots,” can be modulated by their interactions with the anisotropic viscoelastic environment of a liquid crystal (LC). The free energy arising from the elastic strain of LC and formation of topological defects around the microbots influences their folding dynamics, which can be tuned by tailoring both the far-field orientation of the LC and the local ordering of the LC at the microbot surfaces. These findings represent a first step toward establishing a general set of design rules to control the dynamics of microbots using complex anisotropic fluids.
- Authors:
-
[5];
[4]
- North Carolina State Univ., Raleigh, NC (United States); Univ. of Colorado, Boulder, CO (United States)
- Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
- North Carolina State Univ., Raleigh, NC (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- North Carolina State Univ., Raleigh, NC (United States)
- Cornell Univ., Ithaca, NY (United States)
- Publication Date:
- Research Org.:
- Univ. of Wisconsin, Madison, WI (United States); Univ. of Chicago, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1603447
- Grant/Contract Number:
- SC0004025
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Intelligent Systems
- Additional Journal Information:
- Journal Volume: 2; Journal Issue: 2; Journal ID: ISSN 2640-4567
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; active particles; liquid crystals; microbots; micromachines; reconfigurable assemblies
Citation Formats
Shields, C. Wyatt, Kim, Young-Ki, Han, Koohee, Murphy, Andrew C., Scott, Alexander J., Abbott, Nicholas L., and Velev, Orlin D. Control of the Folding Dynamics of Self-Reconfiguring Magnetic Microbots Using Liquid Crystallinity. United States: N. p., 2020.
Web. doi:10.1002/aisy.201900114.
Shields, C. Wyatt, Kim, Young-Ki, Han, Koohee, Murphy, Andrew C., Scott, Alexander J., Abbott, Nicholas L., & Velev, Orlin D. Control of the Folding Dynamics of Self-Reconfiguring Magnetic Microbots Using Liquid Crystallinity. United States. https://doi.org/10.1002/aisy.201900114
Shields, C. Wyatt, Kim, Young-Ki, Han, Koohee, Murphy, Andrew C., Scott, Alexander J., Abbott, Nicholas L., and Velev, Orlin D. Mon .
"Control of the Folding Dynamics of Self-Reconfiguring Magnetic Microbots Using Liquid Crystallinity". United States. https://doi.org/10.1002/aisy.201900114. https://www.osti.gov/servlets/purl/1603447.
@article{osti_1603447,
title = {Control of the Folding Dynamics of Self-Reconfiguring Magnetic Microbots Using Liquid Crystallinity},
author = {Shields, C. Wyatt and Kim, Young-Ki and Han, Koohee and Murphy, Andrew C. and Scott, Alexander J. and Abbott, Nicholas L. and Velev, Orlin D.},
abstractNote = {Reconfigurable microdevices are being explored in a range of contexts where their life-like abilities to move and change shape are important. While much work has been done to control the motion of these microdevices by engineering their geometry and composition, little is known about their dynamics in complex fluid environments with non-Newtonian rheology. Here in this paper, it is shown how the actuation dynamics of reconfigurable microdevices made by assembly of patchy magnetic microcubes, which are referred to as “microbots,” can be modulated by their interactions with the anisotropic viscoelastic environment of a liquid crystal (LC). The free energy arising from the elastic strain of LC and formation of topological defects around the microbots influences their folding dynamics, which can be tuned by tailoring both the far-field orientation of the LC and the local ordering of the LC at the microbot surfaces. These findings represent a first step toward establishing a general set of design rules to control the dynamics of microbots using complex anisotropic fluids.},
doi = {10.1002/aisy.201900114},
journal = {Advanced Intelligent Systems},
number = 2,
volume = 2,
place = {United States},
year = {Mon Jan 20 00:00:00 EST 2020},
month = {Mon Jan 20 00:00:00 EST 2020}
}
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