Synthetic electrically driven colloids: A platform for understanding collective behavior in soft matter

Boymelgreen, Alicia; Schiffbauer, Jarrod; Khusid, Boris; Yossifon, Gilad

doi:10.1016/j.cocis.2022.101603

Cited by 15 publications

(8 citation statements)

References 147 publications

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“…In field-driven colloidal systems, the dispersed particles can be activated and controlled by external fields, where the activated particles move, interact, assemble, and reconfigure [ 10 , 11 , 12 ]. In particular, the use of magnetic and electric fields has shown promise to remotely and precisely control a large number of colloidal particles in a programmable way by modulating field parameters such as field direction, amplitude, and frequency [ 13 , 14 , 15 ]. Recent studies have demonstrated the feasibility of field-driven active colloidal systems to mimic the collective patterns observed in living systems [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Electric and Magnetic Field-Driven Dynamic Structuring for Smart Functional Devices

Han

2023

Micromachines

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The field of soft matter is rapidly growing and pushing the limits of conventional materials science and engineering. Soft matter refers to materials that are easily deformed by thermal fluctuations and external forces, allowing for better adaptation and interaction with the environment. This has opened up opportunities for applications such as stretchable electronics, soft robotics, and microfluidics. In particular, soft matter plays a crucial role in microfluidics, where viscous forces at the microscale pose a challenge to controlling dynamic material behavior and operating functional devices. Field-driven active colloidal systems are a promising model system for building smart functional devices, where dispersed colloidal particles can be activated and controlled by external fields such as magnetic and electric fields. This review focuses on building smart functional devices from field-driven collective patterns, specifically the dynamic structuring of hierarchically ordered structures. These structures self-organize from colloidal building blocks and exhibit reconfigurable collective patterns that can implement smart functions such as shape shifting and self-healing. The review clarifies the basic mechanisms of field-driven particle dynamic behaviors and how particle–particle interactions determine the collective patterns of dynamic structures. Finally, the review concludes by highlighting representative application areas and future directions.

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Section: Introductionmentioning

confidence: 99%

Electric and Magnetic Field-Driven Dynamic Structuring for Smart Functional Devices

Han

2023

Micromachines

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“…Quite naturally, both of these issues have individually generated significant recent interest. Studies on various systems, such as bacterial suspensions or self-propelled particles, have revealed that active fluctuations can induce non-trivial transport phenomena inside cells [34,35], enhance mixing [36] and diffusion [37,38], and even drive the emergence of collective behavior [39]. Studies have also shown that active fluctuations can drive the self-assembly of colloidal systems [40], lead to fluctuation induced phase transitions [41], and enhance the efficiency of microscopic heat engines [42].…”

Section: Introductionmentioning

confidence: 99%

Enhanced directionality of active processes in a viscoelastic bath

Das,

Paul,

Manikandan

et al. 2023

New J. Phys.

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Active fluctuations are known to play a significant role in the intracellular transport of passive objects. However, the effect of viscoelasticity of the environment in shaping such processes is relatively less understood. Here, with a minimal experiment using a driven colloid in a viscoelastic bath, we show that viscoelasticity significantly increases the mean injected power to the passive object (~ 50% compared to a viscous medium), for the same strength of the external driving. Additionally, we observe a notable reduction in negative work fluctuations across a wide range of driving amplitudes. These findings collectively suggest an enhanced directionality in driven processes within a viscoelastic bath, which we attribute to the emergence of interactions between the colloid and the viscoelastic medium.

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“…Electric fields are commonly used to manipulate colloidal particles [1][2][3][4][5][6] and droplets. 7,8 Electric fields drive electrohydrodynamic flows that assemble colloidal crystals on electrodes 9 and have also become a popular means to energize and create self-propelled particles [10][11][12][13][14] due to field-induced charge electrophoresis [15][16][17] or torque due to the Quincke effect, which drives colloids to roll on a surface. [18][19][20][21][22][23] Electric fields enable active control of droplets in microfluidics.…”

Section: Introductionmentioning

confidence: 99%

Electrostatic force on a spherical particle confined between two planar surfaces

Wang,

Miksis,

Vlahovska

2023

Soft Matter

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Synthetic electrically driven colloids: A platform for understanding collective behavior in soft matter

Cited by 15 publications

References 147 publications

Electric and Magnetic Field-Driven Dynamic Structuring for Smart Functional Devices

Electric and Magnetic Field-Driven Dynamic Structuring for Smart Functional Devices

Enhanced directionality of active processes in a viscoelastic bath

Electrostatic force on a spherical particle confined between two planar surfaces

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