Computer modeling reveals modalities to actuate mutable, active matter

Laskar, Abhrajit; Manna, Raj Kumar; Shklyaev, Oleg E.; Balazs, Anna C.

doi:10.1038/s41467-022-30445-x

Cited by 8 publications

(4 citation statements)

References 14 publications

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“…Notably, previous theoretical studies suggest that enzyme pumps are powerful enough to impart motility to macroscale sheets. For example, Laskar et al [12,13] predicted that in the presence of the substrate, hydrogen peroxide, catalase-coated millimeter-scale sheets move and change shape spontaneously. Further simulations [14] revealed that asymmetrically enzyme-coated objects can operate as mobile self-propelling pumps.…”

Section: Introductionmentioning

confidence: 99%

Self‐Propelling Macroscale Sheets Powered by Enzyme Pumps

Song,

Shklyaev,

Sapre

et al. 2023

Angew Chem Int Ed

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Nanoscale enzymes anchored to surfaces act as chemical pumps by converting chemical energy released from enzymatic reactions into spontaneous fluid flow that propels entrained nano‐ and microparticles. Enzymatic pumps are biocompatible, highly selective, and display unique substrate specificity. Utilizing these pumps to trigger self‐propelled motion on the macroscale has, however, constituted a significant challenge and thus prevented their adaptation in macroscopic fluidic devices and soft robotics. Using experiments and simulations, we herein show that enzymatic pumps can drive centimeter‐scale polymer sheets along directed linear paths and rotational trajectories. In these studies, the sheets are confined to the air/water interface. With the addition of appropriate substrate, the asymmetric enzymatic coating on the sheets induces chemically driven, buoyancy flows that controllably propel the sheet's motion on the air/water interface. The directionality and speed of the motion can be tailored by changing the pattern of the enzymatic coating, type of enzyme, and nature and concentration of the substrate. This work highlights the utility of biocompatible enzymes for generating motion in macroscale fluidic devices and robotics and indicates their potential utility for in vivo applications.

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Section: Introductionmentioning

confidence: 99%

Self‐Propelling Macroscale Sheets Powered by Enzyme Pumps

Song,

Shklyaev,

Sapre

et al. 2023

Angew Chem Int Ed

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“…Active colloids are synthetic microparticles that can convert various forms of energy, such as light [ 1 , 2 , 3 , 4 , 5 ], chemical [ 6 , 7 ], magnetic [ 8 , 9 ], electrical [ 10 , 11 ], and acoustic energy [ 12 ] into mechanical motion. Active colloids are found many applications at the microscale, including cargo delivery [ 5 , 13 , 14 ], biosensing [ 15 ], pollution monitoring [ 16 , 17 ], and environmental remediation [ 18 , 19 ], as well as acting as model systems to study the physics of active matter [ 20 , 21 ]. Holding the key to the success of active colloids in both applications and fundamental research is an efficient method to synthesize active colloids of high uniformity in large quantities.…”

Section: Introductionmentioning

confidence: 99%

A Versatile Method for Synthesis of Light-Activated, Magnet-Steerable Organic–Inorganic Hybrid Active Colloids

Geng

Chen

et al. 2023

Molecules

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The immense potential of active colloids in practical applications and fundamental research calls for an efficient method to synthesize active colloids of high uniformity. Herein, a facile method is reported to synthesize uniform organic–inorganic hybrid active colloids based on the wetting effect of polystyrene (PS) with photoresponsive inorganic nanoparticles in a tetrahydrofuran/water mixture. The results show that a range of dimer active colloids can be produced by using different inorganic components, such as AgCl, ZnO, TiO2, and Fe2O3 nanoparticles. Moreover, the strategy provides a simple way to prepare dual-drive active colloids by a rational selection of the starting organic materials, such as magnetic PS particles that result in light and magnet dual-drive active colloids. The motions of these active colloids are quantified, and well-controlled movements are demonstrated.

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“…2019; Jiao & Liu 2021), the manufacture of semiconductors (King 1989) and the design of soft and active matter through catalytic reactions (Laskar et al. 2022; Manna et al. 2022) and dynamical wrinkles (Chopin, Dasgupta & Kudrolli 2017; Kodio, Griffiths & Vella 2017; Box et al.…”

Section: Introductionmentioning

confidence: 99%

“…of blood flow (Pedley, Brook & Seymour 1996) and the blood pressure of tall animals (Pedley et al 1996). Moreover, bending deformations of slender objects in viscous or inertial fluids have been manipulated for applications in soft robotics (Kim, Laschi & Trimmer 2013;Matia & Gat 2015;Rothemund et al 2018), the fabrication of microfluidic soft actuators (Thorsen, Maerkl & Quake 2002;Hosoi & Mahadevan 2004;Holmes et al 2013;Fargette, Neukirch & Antkowiak 2014;Gomez, Moulton & Vella 2017;Christov et al 2018;Boyko et al 2019;Jiao & Liu 2021), the manufacture of semiconductors (King 1989) and the design of soft and active matter through catalytic reactions (Laskar et al 2022;Manna et al 2022) and dynamical wrinkles (Chopin, Dasgupta & Kudrolli 2017;Kodio, Griffiths & Vella 2017;Box et al 2019;Pocivavsek et al 2019;O'Kiely et al 2020;Diamant 2021;Guan et al 2022Guan et al , 2023. Despite recent achievements, novel designs of small-scale devices still call for a deeper understanding of elastohydrodynamic couplings.…”

Section: Introductionmentioning

confidence: 99%

Fluttering-induced flow in a closed chamber

Goncharuk,

Feldman,

Oshri

2023

J. Fluid Mech.

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We study the emergence of fluid flow in a closed chamber that is driven by dynamical deformations of an elastic sheet. The sheet is compressed between the sidewalls of the chamber and partitions it into two separate parts, each of which is initially filled with an inviscid fluid. When fluid exchange is allowed between the two compartments of the chamber, the sheet becomes unstable, and its motion displaces the fluid from rest. We derive an analytical model that accounts for the coupled, two-way, fluid–sheet interaction. We show that the system depends on four dimensionless parameters: the normalized excess length of the sheet compared with the lateral dimension of the chamber, $\varDelta$ ; the normalized vertical dimension of the chamber; the normalized initial volume difference between the two parts of the chamber, $v_{du}(0)$ ; and the structure-to-fluid mass ratio, $\lambda$ . We investigate the dynamics at the early times of the system's evolution and then at moderate times. We obtain the growth rates and the frequency of vibrations around the second and the first buckling modes, respectively. Analytical solutions are derived for these linear stability characteristics within the limit of the small-amplitude approximation. At moderate times, we investigate how the sheet escapes from the second mode. Given the chamber's dimensions, we show that the initial energy of the sheet is mostly converted into hydrodynamic energy of the fluid if $\lambda \ll 1$ and into kinetic energy of the sheet if $\lambda \gg 1$ . In both cases, most of the initial potential energy is released at time $t_{p}\simeq \ln [c \varDelta ^{1/2}/v_{du}(0)]/\sigma$ , where $\sigma$ is the growth rate and $c$ is a constant.

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Computer modeling reveals modalities to actuate mutable, active matter

Cited by 8 publications

References 14 publications

Self‐Propelling Macroscale Sheets Powered by Enzyme Pumps

Self‐Propelling Macroscale Sheets Powered by Enzyme Pumps

A Versatile Method for Synthesis of Light-Activated, Magnet-Steerable Organic–Inorganic Hybrid Active Colloids

Fluttering-induced flow in a closed chamber

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